Remove MATCHMAKING.md

* market form with question, description and end date
* markets cost 1k sats
* a goroutine polls pending invoices from the db and checks LND for their status
* markets are listed on front page (after paid)
* market page contains buttons to bet yes or no
* users have names now

TODO:
* show correct market percentage
* show how percentage changed over time in chart
* validate end date
* implement betting / order form

.gitignore

@@ -7,3 +7,9 @@ delphi.market
 # required for hot reload
 public/hotreload
 *.log
+
+# templ
+*_templ.go
+
+# tailwindcss
+public/css/tailwind.css

MATCHMAKING.md

@@ -1,57 +0,0 @@
-# Prediction Market Matchmaking
-
-Idea:
-Build order book with matchmaking => anyone can provide liquidity at the prices they desire.
-
-A market maker could still run by creating orders which others can fill to "kickstart the market".
-
-
-**Example order flow:**
-
-`YES BUY 5 @ 80 <-> NO BUY 5 @ 20`
-
-YES: 5/80 | p=400/500=0.8<br/>
-NO: 5/20 | p=100/500=0.2<br/>
-total: 500 sats
-
-`YES SELL 1 @ 80 <-> NO SELL 1 @ 20`
-
-YES: 4/80 | p=320/400=0.8<br/>
-NO: 4/20 | p= 80/400=0.2<br/>
-total: 400 sats
-
-`YES SELL 1 @ 90 <-> NO SELL 1 @ 10`
-
-YES: 2/80 + 1/70 | p=230/300=0.7667<br/>
-NO: 2/20 + 1/30 | p= 70/300=0.2334<br/>
-total: 300 sats
-
-`YES BUY 10 @ 90 <-> NO BUY 10 @ 10`
-
-YES: 2/80 + 1/70 + 10/90 | p=1130/1300=0.8692<br/>
-NO: 2/20 + 1/30 + 10/10 | p= 170/1300=0.1307<br/>
-total: 1300
-
-at any time, amount of YES shares in circulation must be equal to amount of NO shares in circulation.
-
-For every YES share bought at a price X, there must either be
-* a NO share bought at (100-X) or
-* a YES share sold at X.
-
-This makes sure that when one sides win, the other side has deposited enough sats to pay them.
-
-Order book will look like this:
-
-| YES BUY-IN     | SELLs           | NO BUY-IN     |                |
-| -------------- |---------------- |---------------|----------------|
-| YES BUY 5 @ 80 | YES SELL 5 @ 80 |               | (filled order)
-| YES BUY 5 @ 10 |                 | NO BUY 5 @ 90 | (filled order)
-| YES BUY 1 @ 60 |                 |               | (open order)
-|                | NO SELL 1 @ 20  |               |
-
-Market stats:
-
-* amount of shares in circulation (amount of YES shares = amount of NO shares)
-* Prediction for YES and NO (%)
-* Expiry: 100 or 0 sats
-

Makefile

@@ -1,14 +1,21 @@
 .PHONY: build run test
 
-SOURCE := $(shell find db env lib lnd pages public server -type f) main.go
+SOURCE := $(shell find db env lib lnd public server -type f) main.go
 
 build: delphi.market
 
 delphi.market: $(SOURCE)
+	tailwindcss -i public/css/_tw-input.css -o public/css/tailwind.css
+	templ generate -path server/router/pages
 	go build -o delphi.market .
 
 run:
+	tailwindcss -i public/css/_tw-input.css -o public/css/tailwind.css
+	templ generate -path server/router/pages
 	go run .
 
+dev:
+	bash hotreload.sh
+
 test:
 	go test -v -count=1 ./server/router/handler/...

db/db.go

@@ -13,7 +13,7 @@ type DB struct {
 }
 
 var (
-	initSqlPath = "./db/init.sql"
+	schemaPath = "./db/schema.sql"
 )
 
 func New(dbUrl string) (*DB, error) {
@@ -42,7 +42,7 @@ func (db *DB) Reset(dbName string) error {
 	if err = db.Clear(dbName); err != nil {
 		return err
 	}
-	if f, err = ioutil.ReadFile(initSqlPath); err != nil {
+	if f, err = ioutil.ReadFile(schemaPath); err != nil {
 		return err
 	}
 	if _, err = db.Exec(string(f)); err != nil {
@@ -53,7 +53,7 @@ func (db *DB) Reset(dbName string) error {
 
 func (db *DB) Clear(dbName string) error {
 	var (
-		tables = []string{"lnauth", "users", "sessions", "markets", "shares", "invoices", "order_side", "orders", "matches"}
+		tables = []string{"lnauth", "users", "sessions", "invoices", "markets", "shares", "invoices", "order_side", "orders", "withdrawals"}
 		sql    []string
 		err    error
 	)

db/init.sql

@@ -1,67 +1 @@
-CREATE TABLE lnauth(
+CREATE DATABASE "delphi_test";
-    k1 VARCHAR(64) NOT NULL PRIMARY KEY,
-    lnurl TEXT NOT NULL,
-    created TIMESTAMP WITH TIME ZONE NOT NULL DEFAULT CURRENT_TIMESTAMP,
-    session_id VARCHAR(48) NOT NULL DEFAULT encode(gen_random_uuid()::text::bytea, 'base64')
-);
-CREATE TABLE users(
-    pubkey TEXT PRIMARY KEY,
-    last_seen TIMESTAMP WITH TIME ZONE NOT NULL DEFAULT CURRENT_TIMESTAMP,
-    msats BIGINT NOT NULL DEFAULT 0
-);
-CREATE TABLE sessions(
-    pubkey TEXT NOT NULL REFERENCES users(pubkey),
-    session_id VARCHAR(48)
-);
-CREATE TABLE invoices(
-    id UUID PRIMARY KEY DEFAULT uuid_generate_v4(),
-    pubkey TEXT NOT NULL REFERENCES users(pubkey),
-    msats BIGINT NOT NULL,
-    msats_received BIGINT,
-    preimage TEXT NOT NULL UNIQUE,
-    hash TEXT NOT NULL UNIQUE,
-    bolt11 TEXT NOT NULL,
-    created_at TIMESTAMP WITH TIME ZONE NOT NULL,
-    expires_at TIMESTAMP WITH TIME ZONE NOT NULL,
-    confirmed_at TIMESTAMP WITH TIME ZONE,
-    held_since TIMESTAMP WITH TIME ZONE,
-    description TEXT
-);
-CREATE TABLE markets(
-    id SERIAL PRIMARY KEY,
-    description TEXT NOT NULL,
-    end_date TIMESTAMP WITH TIME ZONE NOT NULL,
-    settled_at TIMESTAMP WITH TIME ZONE,
-    pubkey TEXT NOT NULL REFERENCES users(pubkey),
-    invoice_id UUID NOT NULL UNIQUE REFERENCES invoices(id)
-);
-CREATE EXTENSION "uuid-ossp";
-CREATE TABLE shares(
-    id UUID PRIMARY KEY DEFAULT uuid_generate_v4(),
-    market_id INTEGER NOT NULL REFERENCES markets(id),
-    win BOOLEAN,
-    description TEXT NOT NULL
-);
-CREATE TYPE order_side AS ENUM ('BUY', 'SELL');
-CREATE TABLE orders(
-    id UUID PRIMARY KEY DEFAULT uuid_generate_v4(),
-    created_at TIMESTAMP WITH TIME ZONE NOT NULL DEFAULT CURRENT_TIMESTAMP,
-    deleted_at TIMESTAMP WITH TIME ZONE,
-    share_id UUID NOT NULL REFERENCES shares(id),
-    pubkey TEXT NOT NULL REFERENCES users(pubkey),
-    side ORDER_SIDE NOT NULL,
-    quantity BIGINT NOT NULL,
-    price BIGINT NOT NULL,
-    invoice_id UUID REFERENCES invoices(id),
-    order_id UUID REFERENCES orders(id)
-);
-ALTER TABLE orders ADD CONSTRAINT order_price CHECK(price > 0 AND price < 100);
-ALTER TABLE orders ADD CONSTRAINT order_quantity CHECK(quantity > 0);
-CREATE TABLE withdrawals(
-    id UUID PRIMARY KEY DEFAULT uuid_generate_v4(),
-    created_at TIMESTAMP WITH TIME ZONE NOT NULL DEFAULT CURRENT_TIMESTAMP,
-    deleted_at TIMESTAMP WITH TIME ZONE,
-    pubkey TEXT NOT NULL REFERENCES users(pubkey),
-    bolt11 TEXT NOT NULL UNIQUE,
-    paid_at TIMESTAMP WITH TIME ZONE
-);

db/invoice.go

@@ -1,106 +0,0 @@
-package db
-
-import (
-	"context"
-	"database/sql"
-	"time"
-)
-
-func (db *DB) CreateInvoice(tx *sql.Tx, ctx context.Context, invoice *Invoice) error {
-	if err := tx.QueryRowContext(ctx, ""+
-		"INSERT INTO invoices(pubkey, msats, preimage, hash, bolt11, created_at, expires_at, description) "+
-		"VALUES($1, $2, $3, $4, $5, $6, $7, $8) "+
-		"RETURNING id",
-		invoice.Pubkey, invoice.Msats, invoice.Preimage, invoice.Hash, invoice.PaymentRequest, invoice.CreatedAt, invoice.ExpiresAt, invoice.Description).Scan(&invoice.Id); err != nil {
-		return err
-	}
-	return nil
-}
-
-type FetchInvoiceWhere struct {
-	Id   string
-	Hash string
-}
-
-func (db *DB) FetchInvoice(where *FetchInvoiceWhere, invoice *Invoice) error {
-	var (
-		query = "SELECT id, pubkey, msats, preimage, hash, bolt11, created_at, expires_at, confirmed_at, held_since, COALESCE(description, '') FROM invoices "
-		args  []any
-	)
-	if where.Id != "" {
-		query += "WHERE id = $1"
-		args = append(args, where.Id)
-	} else if where.Hash != "" {
-		query += "WHERE hash = $1"
-		args = append(args, where.Hash)
-	}
-	if err := db.QueryRow(query, args...).Scan(
-		&invoice.Id, &invoice.Pubkey, &invoice.Msats, &invoice.Preimage, &invoice.Hash,
-		&invoice.PaymentRequest, &invoice.CreatedAt, &invoice.ExpiresAt, &invoice.ConfirmedAt, &invoice.HeldSince, &invoice.Description); err != nil {
-		return err
-	}
-	return nil
-}
-
-type FetchInvoicesWhere struct {
-	Unconfirmed bool
-}
-
-func (db *DB) FetchInvoices(where *FetchInvoicesWhere, invoices *[]Invoice) error {
-	var (
-		rows    *sql.Rows
-		invoice Invoice
-		err     error
-	)
-	var (
-		query = "SELECT id, pubkey, msats, preimage, hash, bolt11, created_at, expires_at, confirmed_at, held_since, COALESCE(description, '') FROM invoices "
-	)
-	if where.Unconfirmed {
-		query += "WHERE confirmed_at IS NULL"
-	}
-	if rows, err = db.Query(query); err != nil {
-		return err
-	}
-	defer rows.Close()
-	for rows.Next() {
-		rows.Scan(
-			&invoice.Id, &invoice.Pubkey, &invoice.Msats, &invoice.Preimage, &invoice.Hash,
-			&invoice.PaymentRequest, &invoice.CreatedAt, &invoice.ExpiresAt, &invoice.ConfirmedAt, &invoice.HeldSince, &invoice.Description)
-		*invoices = append(*invoices, invoice)
-	}
-	return nil
-}
-
-func (db *DB) FetchUserInvoices(pubkey string, invoices *[]Invoice) error {
-	var (
-		rows    *sql.Rows
-		invoice Invoice
-		err     error
-	)
-	var (
-		query = "" +
-			"SELECT id, pubkey, msats, preimage, hash, bolt11, created_at, expires_at, confirmed_at, held_since, COALESCE(description, ''), " +
-			"CASE WHEN confirmed_at IS NOT NULL THEN 'PAID' WHEN expires_at < CURRENT_TIMESTAMP THEN 'EXPIRED' ELSE 'PENDING' END AS status " +
-			"FROM invoices " +
-			"WHERE pubkey = $1 " +
-			"ORDER BY created_at DESC"
-	)
-	if rows, err = db.Query(query, pubkey); err != nil {
-		return err
-	}
-	defer rows.Close()
-	for rows.Next() {
-		rows.Scan(
-			&invoice.Id, &invoice.Pubkey, &invoice.Msats, &invoice.Preimage, &invoice.Hash,
-			&invoice.PaymentRequest, &invoice.CreatedAt, &invoice.ExpiresAt, &invoice.ConfirmedAt, &invoice.HeldSince, &invoice.Description, &invoice.Status)
-		*invoices = append(*invoices, invoice)
-	}
-	return nil
-}
-
-func (db *DB) ConfirmInvoice(tx *sql.Tx, c context.Context, hash string, confirmedAt time.Time, msatsReceived int) error {
-	if _, err := tx.ExecContext(c, "UPDATE invoices SET confirmed_at = $2, msats_received = $3 WHERE hash = $1", hash, confirmedAt, msatsReceived); err != nil {
-		return err
-	}
-	return nil
-}

db/lnauth.go

@@ -1,18 +0,0 @@
-package db
-
-func (db *DB) CreateLNAuth(lnAuth *LNAuth) error {
-	err := db.QueryRow(
-		"INSERT INTO lnauth(k1, lnurl) VALUES($1, $2) RETURNING session_id",
-		lnAuth.K1, lnAuth.LNURL).Scan(&lnAuth.SessionId)
-	return err
-}
-
-func (db *DB) FetchSessionId(k1 string, sessionId *string) error {
-	err := db.QueryRow("SELECT session_id FROM lnauth WHERE k1 = $1", k1).Scan(sessionId)
-	return err
-}
-
-func (db *DB) DeleteLNAuth(lnAuth *LNAuth) error {
-	_, err := db.Exec("DELETE FROM lnauth WHERE k1 = $1", lnAuth.K1)
-	return err
-}

db/market.go

@@ -1,353 +0,0 @@
-package db
-
-import (
-	"context"
-	"database/sql"
-	"log"
-	"time"
-)
-
-type FetchOrdersWhere struct {
-	MarketId  int
-	Pubkey    string
-	Confirmed bool
-}
-
-func (db *DB) CreateMarket(tx *sql.Tx, ctx context.Context, market *Market) error {
-	if err := tx.QueryRowContext(ctx, ""+
-		"INSERT INTO markets(description, end_date, pubkey, invoice_id) "+
-		"VALUES($1, $2, $3, $4) "+
-		"RETURNING id", market.Description, market.EndDate, market.Pubkey, market.InvoiceId).Scan(&market.Id); err != nil {
-		return err
-	}
-	// For now, we only support binary markets.
-	if _, err := tx.Exec("INSERT INTO shares(market_id, description) VALUES ($1, 'YES'), ($1, 'NO')", market.Id); err != nil {
-		return err
-	}
-	return nil
-}
-
-func (db *DB) FetchMarket(marketId int, market *Market) error {
-	if err := db.QueryRow("SELECT id, description, end_date, pubkey, settled_at FROM markets WHERE id = $1", marketId).Scan(&market.Id, &market.Description, &market.EndDate, &market.Pubkey, &market.SettledAt); err != nil {
-		return err
-	}
-	return nil
-}
-
-func (db *DB) FetchActiveMarkets(markets *[]Market) error {
-	var (
-		rows   *sql.Rows
-		market Market
-		err    error
-	)
-	if rows, err = db.Query("" +
-		"SELECT m.id, m.description, m.end_date FROM markets m " +
-		"JOIN invoices i ON i.id = m.invoice_id WHERE i.confirmed_at IS NOT NULL"); err != nil {
-		return err
-	}
-	defer rows.Close()
-	for rows.Next() {
-		rows.Scan(&market.Id, &market.Description, &market.EndDate)
-		*markets = append(*markets, market)
-	}
-	return nil
-}
-
-func (db *DB) FetchShares(marketId int, shares *[]Share) error {
-	rows, err := db.Query("SELECT id, market_id, description, win FROM shares WHERE market_id = $1 ORDER BY description DESC", marketId)
-	if err != nil {
-		return err
-	}
-	defer rows.Close()
-	for rows.Next() {
-		var share Share
-		rows.Scan(&share.Id, &share.MarketId, &share.Description, &share.Win)
-		*shares = append(*shares, share)
-	}
-	return nil
-}
-
-func (db *DB) FetchShare(tx *sql.Tx, ctx context.Context, shareId string, share *Share) error {
-	return tx.QueryRowContext(ctx, "SELECT id, market_id, description FROM shares WHERE id = $1", shareId).Scan(&share.Id, &share.MarketId, &share.Description)
-}
-
-func (db *DB) FetchOrders(where *FetchOrdersWhere, orders *[]Order) error {
-	query := "" +
-		"SELECT o.id, share_id, o.pubkey, o.side, o.quantity, o.price, o.invoice_id, o.created_at, o.deleted_at, s.description, s.market_id, i.confirmed_at " +
-		"FROM orders o " +
-		"JOIN invoices i ON o.invoice_id = i.id " +
-		"JOIN shares s ON o.share_id = s.id " +
-		"WHERE o.deleted_at IS NULL "
-	var args []any
-	if where.MarketId > 0 {
-		query += "AND share_id = ANY(SELECT id FROM shares WHERE market_id = $1) "
-		args = append(args, where.MarketId)
-	} else if where.Pubkey != "" {
-		query += "AND o.pubkey = $1 "
-		args = append(args, where.Pubkey)
-	}
-	if where.Confirmed {
-		query += "AND o.order_id IS NOT NULL "
-	}
-	query += "AND (i.confirmed_at IS NOT NULL OR i.expires_at > CURRENT_TIMESTAMP) "
-	query += "ORDER BY price DESC"
-	rows, err := db.Query(query, args...)
-	if err != nil {
-		return err
-	}
-	defer rows.Close()
-	for rows.Next() {
-		var order Order
-		rows.Scan(&order.Id, &order.ShareId, &order.Pubkey, &order.Side, &order.Quantity, &order.Price, &order.InvoiceId, &order.CreatedAt, &order.DeletedAt, &order.Share.Description, &order.Share.MarketId, &order.Invoice.ConfirmedAt)
-		*orders = append(*orders, order)
-	}
-	return nil
-}
-
-func (db *DB) CreateOrder(tx *sql.Tx, ctx context.Context, order *Order) error {
-	if _, err := tx.ExecContext(ctx, ""+
-		"INSERT INTO orders(share_id, pubkey, side, quantity, price, invoice_id) "+
-		"VALUES ($1, $2, $3, $4, $5, CASE WHEN $6 = '' THEN NULL ELSE $6::UUID END)",
-		order.ShareId, order.Pubkey, order.Side, order.Quantity, order.Price, order.InvoiceId.String); err != nil {
-		return err
-	}
-	return nil
-}
-
-func (db *DB) FetchOrder(tx *sql.Tx, ctx context.Context, orderId string, order *Order) error {
-	query := "" +
-		"SELECT o.id, o.share_id, o.pubkey, o.side, o.quantity, o.price, o.created_at, o.deleted_at, o.order_id, s.description, s.market_id, i.confirmed_at, o.invoice_id, COALESCE(i.msats_received, 0) " +
-		"FROM orders o " +
-		"LEFT JOIN invoices i ON o.invoice_id = i.id " +
-		"JOIN shares s ON o.share_id = s.id " +
-		"WHERE o.id = $1"
-	return tx.QueryRowContext(ctx, query, orderId).Scan(&order.Id, &order.ShareId, &order.Pubkey, &order.Side, &order.Quantity, &order.Price, &order.CreatedAt, &order.DeletedAt, &order.OrderId, &order.Share.Description, &order.MarketId, &order.Invoice.ConfirmedAt, &order.InvoiceId, &order.Invoice.MsatsReceived)
-}
-
-func (db *DB) FetchUserOrders(pubkey string, orders *[]Order) error {
-	query := "" +
-		"SELECT o.id, share_id, o.pubkey, o.side, o.quantity, o.price, o.created_at, o.deleted_at, s.description, s.market_id, i.confirmed_at, " +
-		"CASE WHEN o.order_id IS NOT NULL THEN 'EXECUTED' WHEN o.deleted_at IS NOT NULL THEN 'CANCELED' ELSE 'PENDING' END AS status, o.order_id, o.invoice_id " +
-		"FROM orders o " +
-		"LEFT JOIN invoices i ON o.invoice_id = i.id " +
-		"JOIN shares s ON o.share_id = s.id " +
-		"WHERE o.pubkey = $1 AND ( (o.side = 'BUY' AND i.confirmed_at IS NOT NULL) OR o.side = 'SELL' ) " +
-		"ORDER BY o.created_at DESC"
-	rows, err := db.Query(query, pubkey)
-	if err != nil {
-		return err
-	}
-	defer rows.Close()
-	for rows.Next() {
-		var order Order
-		rows.Scan(&order.Id, &order.ShareId, &order.Pubkey, &order.Side, &order.Quantity, &order.Price, &order.CreatedAt, &order.DeletedAt, &order.ShareDescription, &order.Share.MarketId, &order.Invoice.ConfirmedAt, &order.Status, &order.OrderId, &order.InvoiceId)
-		*orders = append(*orders, order)
-	}
-	return nil
-}
-
-func (db *DB) FetchMarketOrders(marketId int64, orders *[]Order) error {
-	query := "" +
-		"SELECT o.id, share_id, o.pubkey, o.side, o.quantity, o.price, o.created_at, s.description, s.market_id, " +
-		"CASE WHEN o.order_id IS NOT NULL THEN 'EXECUTED' ELSE 'PENDING' END AS status, o.order_id, o.invoice_id " +
-		"FROM orders o " +
-		"JOIN shares s ON o.share_id = s.id " +
-		"LEFT JOIN invoices i ON o.invoice_id = i.id " +
-		"WHERE s.market_id = $1 AND o.deleted_at IS NULL AND ( (o.side = 'BUY' AND i.confirmed_at IS NOT NULL) OR o.side = 'SELL' ) " +
-		"ORDER BY o.created_at DESC"
-	rows, err := db.Query(query, marketId)
-	if err != nil {
-		return err
-	}
-	defer rows.Close()
-	for rows.Next() {
-		var order Order
-		rows.Scan(&order.Id, &order.ShareId, &order.Pubkey, &order.Side, &order.Quantity, &order.Price, &order.CreatedAt, &order.ShareDescription, &order.Share.MarketId, &order.Status, &order.OrderId, &order.InvoiceId)
-		*orders = append(*orders, order)
-	}
-	return nil
-}
-
-func (db *DB) RunMatchmaking(orderId string) {
-	var (
-		ctx    context.Context
-		cancel context.CancelFunc
-		tx     *sql.Tx
-		o1     Order
-		o2     Order
-		err    error
-	)
-	ctx, cancel = context.WithTimeout(context.TODO(), 10*time.Second)
-	defer cancel()
-	if tx, err = db.BeginTx(ctx, nil); err != nil {
-		log.Println(err)
-		return
-	}
-	// TODO: assert that order was confirmed
-	if err = db.FetchOrder(tx, ctx, orderId, &o1); err != nil {
-		log.Println(err)
-		tx.Rollback()
-		return
-	}
-	if err = db.FindOrderMatches(tx, ctx, &o1, &o2); err != nil {
-		log.Println(err)
-		tx.Rollback()
-		return
-	}
-	if o2.OrderId.Valid {
-		log.Printf("assertion failed: order %s matched order %s but order_id already set to %s\n", o1.Id, o2.Id, o2.OrderId.String)
-		tx.Rollback()
-		return
-	}
-	if o1.Id == o2.Id {
-		log.Printf("assertion failed: order %s matched itself", o1.Id)
-		tx.Rollback()
-		return
-	}
-	if err = db.MatchOrders(tx, ctx, &o1, &o2); err != nil {
-		log.Println(err)
-		tx.Rollback()
-		return
-	}
-
-	tx.Commit()
-}
-
-func (db *DB) FindOrderMatches(tx *sql.Tx, ctx context.Context, o1 *Order, o2 *Order) error {
-	query := "" +
-		"SELECT o.id, o.order_id, o.side, o.quantity, o.price, o.pubkey FROM orders o " +
-		"JOIN shares s ON s.id = o.share_id " +
-		"LEFT JOIN invoices i ON i.id = o.invoice_id " +
-		// only match orders which are not soft deleted
-		"WHERE o.deleted_at IS NULL " +
-		// only match orders which are not already settled
-		"AND o.order_id IS NULL " +
-		// only match orders from other users
-		"AND o.pubkey <> $1 " +
-		// orders must always be for same market and have same quantity
-		"AND o.quantity = $2 AND s.market_id = $3 " +
-		// BUY orders must have been confirmed by paying the invoice
-		"AND CASE WHEN o.side = 'BUY' THEN i.confirmed_at IS NOT NULL ELSE 1=1 END " +
-		"AND (" +
-		// -- BUY orders match if they are for different shares and the sum of their prices equal 100
-		// -- example: BUY 5 YES @ 60 <> BUY 5 NO @ 40
-		"  ( $5 = 'BUY' AND o.side = 'BUY' AND o.price = (100-$6) AND o.share_id <> $4 ) " +
-		// -- BUY orders match SELL orders if they are for the same share and have same price
-		// -- example: BUY 5 YES @ 60 <> SELL 5 YES @ 60
-		"  OR ( $5 = 'BUY' AND o.side = 'SELL' AND o.price = $6 AND o.share_id = $4 ) " +
-		// -- SELL orders match BUY orders if they are for the same share and have same price
-		// -- example: SELL 5 YES @ 60 <> BUY 5 YES @ 60
-		"  OR ( $5 = 'SELL' AND o.side = 'BUY' AND o.price = $6 AND o.share_id = $4 ) " +
-		") " +
-		// match oldest order first
-		"ORDER BY o.created_at ASC LIMIT 1"
-	return tx.QueryRowContext(ctx, query, o1.Pubkey, o1.Quantity, o1.Share.MarketId, o1.ShareId, o1.Side, o1.Price).Scan(&o2.Id, &o2.OrderId, &o2.Side, &o2.Quantity, &o2.Price, &o2.Pubkey)
-}
-
-func (db *DB) MatchOrders(tx *sql.Tx, ctx context.Context, o1 *Order, o2 *Order) error {
-	var err error
-	if _, err = tx.ExecContext(ctx, "UPDATE orders SET order_id = $1 WHERE id = $2", o1.Id, o2.Id); err != nil {
-		tx.Rollback()
-		return err
-	}
-	if _, err = tx.ExecContext(ctx, "UPDATE orders SET order_id = $1 WHERE id = $2", o2.Id, o1.Id); err != nil {
-		tx.Rollback()
-		return err
-	}
-	if o1.Side == "SELL" {
-		if _, err = tx.ExecContext(ctx, "UPDATE users SET msats = msats + $1 WHERE pubkey = $2", (o1.Price*o1.Quantity)*1000, o1.Pubkey); err != nil {
-			tx.Rollback()
-			return err
-		}
-	}
-	if o2.Side == "SELL" {
-		if _, err = tx.ExecContext(ctx, "UPDATE users SET msats = msats + $1 WHERE pubkey = $2", (o2.Price*o2.Quantity)*1000, o2.Pubkey); err != nil {
-			tx.Rollback()
-			return err
-		}
-	}
-	log.Printf("Matched orders: %s <> %s\n", o1.Id, o2.Id)
-	return nil
-}
-
-// [
-//
-//	{ "x": <timestamp>, "y": { <share_description>: <score>, ... } },
-//
-// ]
-type MarketStat struct {
-	X time.Time      `json:"x"`
-	Y map[string]int `json:"y"`
-}
-type MarketStats = []MarketStat
-
-func (db *DB) FetchMarketStats(marketId int64, stats *MarketStats) error {
-	query := "" +
-		"SELECT " +
-		"s.description, " +
-		"GREATEST(i.confirmed_at, i2.confirmed_at) AS confirmed_at, " +
-		"SUM(o.price * o.quantity) OVER (PARTITION BY o.share_id ORDER BY o.created_at ROWS BETWEEN UNBOUNDED PRECEDING AND CURRENT ROW) AS score " +
-		"FROM orders o " +
-		"JOIN orders o2 ON o2.id = o.order_id " +
-		"JOIN shares s ON s.id = o.share_id " +
-		"JOIN invoices i ON i.id = o.invoice_id " +
-		"JOIN invoices i2 ON i2.id = o2.invoice_id " +
-		"WHERE s.market_id = $1 AND i.confirmed_at IS NOT NULL AND o.order_id IS NOT NULL ORDER BY i.confirmed_at ASC"
-	rows, err := db.Query(query, marketId)
-	if err != nil {
-		return err
-	}
-
-	defer rows.Close()
-	for rows.Next() {
-		var stat MarketStat
-		var (
-			timestamp   time.Time
-			description string
-			score       int
-		)
-		rows.Scan(&description, &timestamp, &score)
-		stat.X = timestamp
-		stat.Y = map[string]int{
-			description: score,
-		}
-		*stats = append(*stats, stat)
-	}
-	return nil
-}
-
-func (db *DB) FetchUserBalance(tx *sql.Tx, ctx context.Context, marketId int, pubkey string, balance *map[string]any) error {
-	query := "" +
-		"SELECT s.description, " +
-		"SUM(CASE WHEN o.side = 'BUY' THEN o.quantity ELSE -o.quantity END) " +
-		"FROM orders o " +
-		"LEFT JOIN invoices i ON i.id = o.invoice_id " +
-		"JOIN shares s ON s.id = o.share_id " +
-		"WHERE o.pubkey = $1 AND s.market_id = $2 " +
-		// ignore canceled orders
-		"AND o.deleted_at IS NULL " +
-		"AND ( " +
-		// shares from BUY orders are received if they were paid (necessary precondition for matchmaking) and found a matching order
-		"  (o.side = 'BUY' AND i.confirmed_at IS NOT NULL AND o.order_id IS NOT NULL) " +
-		// shares from SELL orders are deducted immediately to prevent double-spends
-		"  OR o.side = 'SELL' " +
-		") " +
-		"GROUP BY o.pubkey, s.description"
-	rows, err := tx.QueryContext(ctx, query, pubkey, marketId)
-	if err != nil {
-		return err
-	}
-
-	defer rows.Close()
-	for rows.Next() {
-		var (
-			sdesc string
-			val   int
-		)
-		if err = rows.Scan(&sdesc, &val); err != nil {
-			return err
-		}
-		(*balance)[sdesc] = val
-	}
-	return nil
-}

db/schema.sql

@@ -0,0 +1,80 @@
+CREATE TABLE users(
+    id SERIAL PRIMARY KEY,
+    name TEXT UNIQUE NOT NULL DEFAULT LEFT(md5(random()::text), 8),
+    created_at TIMESTAMP WITH TIME ZONE NOT NULL DEFAULT CURRENT_TIMESTAMP,
+    ln_pubkey TEXT UNIQUE,
+    nostr_pubkey TEXT UNIQUE,
+    msats BIGINT NOT NULL DEFAULT 0
+);
+
+CREATE TABLE sessions(
+    id VARCHAR(48) PRIMARY KEY,
+    user_id INTEGER NOT NULL REFERENCES users(id),
+    created_at TIMESTAMP WITH TIME ZONE NOT NULL DEFAULT CURRENT_TIMESTAMP
+);
+
+CREATE TABLE lnauth(
+    k1 VARCHAR(64) PRIMARY KEY,
+    created_at TIMESTAMP WITH TIME ZONE NOT NULL DEFAULT CURRENT_TIMESTAMP,
+    lnurl TEXT NOT NULL,
+    session_id VARCHAR(48) NOT NULL DEFAULT encode(gen_random_uuid()::text::bytea, 'base64')
+);
+
+CREATE TABLE invoices(
+    id SERIAL PRIMARY KEY,
+    user_id INTEGER NOT NULL REFERENCES users(id),
+    msats BIGINT NOT NULL,
+    msats_received BIGINT,
+    hash TEXT NOT NULL UNIQUE,
+    bolt11 TEXT NOT NULL,
+    created_at TIMESTAMP WITH TIME ZONE NOT NULL DEFAULT CURRENT_TIMESTAMP,
+    expires_at TIMESTAMP WITH TIME ZONE NOT NULL,
+    confirmed_at TIMESTAMP WITH TIME ZONE,
+    held_since TIMESTAMP WITH TIME ZONE,
+    description TEXT
+);
+
+CREATE TABLE markets(
+    id SERIAL PRIMARY KEY,
+    created_at TIMESTAMP WITH TIME ZONE NOT NULL DEFAULT CURRENT_TIMESTAMP,
+    question TEXT NOT NULL,
+    description TEXT,
+    end_date TIMESTAMP WITH TIME ZONE NOT NULL,
+    settled_at TIMESTAMP WITH TIME ZONE,
+    user_id INTEGER NOT NULL REFERENCES users(id),
+    invoice_id INTEGER NOT NULL UNIQUE REFERENCES invoices(id)
+);
+
+CREATE TABLE shares(
+    id SERIAL PRIMARY KEY,
+    market_id INTEGER NOT NULL REFERENCES markets(id),
+    description TEXT NOT NULL,
+    win BOOLEAN
+);
+
+CREATE TYPE order_side AS ENUM ('BUY', 'SELL');
+
+CREATE TABLE orders(
+    id SERIAL PRIMARY KEY,
+    created_at TIMESTAMP WITH TIME ZONE NOT NULL DEFAULT CURRENT_TIMESTAMP,
+    deleted_at TIMESTAMP WITH TIME ZONE,
+    share_id INTEGER NOT NULL REFERENCES shares(id),
+    user_id INTEGER NOT NULL REFERENCES users(id),
+    side ORDER_SIDE NOT NULL,
+    quantity BIGINT NOT NULL,
+    price BIGINT NOT NULL,
+    invoice_id INTEGER REFERENCES invoices(id),
+    order_id INTEGER REFERENCES orders(id)
+);
+
+ALTER TABLE orders ADD CONSTRAINT order_price CHECK(price > 0 AND price < 100);
+ALTER TABLE orders ADD CONSTRAINT order_quantity CHECK(quantity > 0);
+
+CREATE TABLE withdrawals(
+    id SERIAL PRIMARY KEY,
+    created_at TIMESTAMP WITH TIME ZONE NOT NULL DEFAULT CURRENT_TIMESTAMP,
+    canceled_at TIMESTAMP WITH TIME ZONE,
+    user_id INTEGER NOT NULL REFERENCES users(id),
+    bolt11 TEXT NOT NULL UNIQUE,
+    paid_at TIMESTAMP WITH TIME ZONE
+);

db/session.go

@@ -1,17 +0,0 @@
-package db
-
-func (db *DB) CreateSession(s *Session) error {
-	_, err := db.Exec("INSERT INTO sessions(pubkey, session_id) VALUES($1, $2)", s.Pubkey, s.SessionId)
-	return err
-}
-
-func (db *DB) FetchSession(s *Session) error {
-	query := "SELECT u.pubkey, u.msats FROM sessions s LEFT JOIN users u ON u.pubkey = s.pubkey WHERE session_id = $1"
-	err := db.QueryRow(query, s.SessionId).Scan(&s.Pubkey, &s.Msats)
-	return err
-}
-
-func (db *DB) DeleteSession(s *Session) error {
-	_, err := db.Exec("DELETE FROM sessions where session_id = $1", s.SessionId)
-	return err
-}

db/types.go

@@ -1,80 +0,0 @@
-package db
-
-import (
-	"time"
-
-	"gopkg.in/guregu/null.v4"
-)
-
-type (
-	Serial = int
-	UUID   = string
-	LNAuth struct {
-		K1        string
-		LNURL     string
-		CreatedAt time.Time
-		SessionId string
-	}
-	User struct {
-		Pubkey   string
-		Msats    int64
-		LastSeen time.Time
-	}
-	Session struct {
-		Pubkey    string
-		Msats     int64
-		SessionId string
-	}
-	Market struct {
-		Id          Serial    `json:"id"`
-		Description string    `json:"description"`
-		EndDate     time.Time `json:"endDate"`
-		SettledAt   null.Time `json:"settledAt"`
-		Pubkey      string    `json:"pubkey"`
-		InvoiceId   UUID
-	}
-	Share struct {
-		Id          UUID `json:"sid"`
-		MarketId    int
-		Description string
-		Win         bool
-	}
-	Invoice struct {
-		Id             UUID
-		Pubkey         string
-		Msats          int64
-		MsatsReceived  int64
-		Preimage       string
-		Hash           string
-		PaymentRequest string
-		CreatedAt      time.Time
-		ExpiresAt      time.Time
-		ConfirmedAt    null.Time
-		HeldSince      null.Time
-		Description    string
-		Status         string
-	}
-	Order struct {
-		Id               UUID
-		CreatedAt        time.Time
-		DeletedAt        null.Time
-		ShareId          string `json:"sid"`
-		ShareDescription string
-		Share
-		Pubkey    string
-		Side      string `json:"side"`
-		Quantity  int64  `json:"quantity"`
-		Price     int64  `json:"price"`
-		InvoiceId null.String
-		Invoice
-		OrderId null.String
-	}
-	Withdrawal struct {
-		Id        UUID
-		CreatedAt time.Time
-		DeletedAt null.Time
-		Pubkey    string
-		Bolt11    string `json:"bolt11"`
-		PaidAt    null.Time
-	}
-)

db/user.go

@@ -1,17 +0,0 @@
-package db
-
-func (db *DB) CreateUser(u *User) error {
-	_, err := db.Exec(
-		"INSERT INTO users(pubkey) VALUES ($1) ON CONFLICT(pubkey) DO UPDATE SET last_seen = CURRENT_TIMESTAMP",
-		u.Pubkey)
-	return err
-}
-
-func (db *DB) FetchUser(pubkey string, u *User) error {
-	return db.QueryRow("SELECT pubkey, last_seen FROM users WHERE pubkey = $1", pubkey).Scan(&u.Pubkey, &u.LastSeen)
-}
-
-func (db *DB) UpdateUser(u *User) error {
-	_, err := db.Exec("UPDATE users SET last_seen = $1 WHERE pubkey = $2", u.LastSeen, u.Pubkey)
-	return err
-}

db/withdrawal.go

@@ -1,13 +0,0 @@
-package db
-
-import (
-	"context"
-	"database/sql"
-)
-
-func (db *DB) CreateWithdrawal(tx *sql.Tx, c context.Context, w *Withdrawal) error {
-	if _, err := tx.ExecContext(c, "INSERT INTO withdrawals(pubkey, bolt11) VALUES ($1, $2)", w.Pubkey, w.Bolt11); err != nil {
-		return err
-	}
-	return nil
-}

docker-compose.yml

@@ -12,7 +12,8 @@ services:
       - 127.0.0.1:5432:5432
     volumes:
       - delphi:/var/lib/postgresql/data
-      - ./init.sql:/docker-entrypoint-initdb.d/init.sql
+      - ./db/init.sql:/docker-entrypoint-initdb.d/init.sql
+      - ./db/schema.sql:/docker-entrypoint-initdb.d/schema.sql
       - ./postgresql.conf:/var/lib/postgresql/data/postgresql.conf # for some reason this can't be mounted on first run
 
 volumes:

fonts/chunky.flf

@@ -0,0 +1,512 @@
+flf2a$ 5 4 20 15 1
+Square by Chris Gill, 30-JUN-94 -- based on .sig of Jeb Hagan.
+$@
+$@
+$@
+$@
+$@@
+ __ @
+|  |@
+|__|@
+|__|@
+    @@
+ ____ @
+| |  |@
+ |_|_|@
+      @
+      @@
+   _____   @
+ _|  |  |_ @
+|_       _|@
+|_       _|@
+  |__|__|  @@
+ __,-,__ @
+|  ' '__|@
+|__     |@
+|_______|@
+   |_|   @@
+ __ ___ @
+|__|   |@
+|    __|@
+|___|__|@
+        @@
+ __,-,__ @
+|  ' '__|@
+|     __|@
+|_______|@
+   |_|   @@
+ __ @
+|  |@
+ |_|@
+    @
+    @@
+  ___ @
+,'  _|@
+|  |  @
+|  |_ @
+`.___|@@
+ ___  @
+|_  `.@
+  |  |@
+ _|  |@
+|___,'@@
+ __ _ __ @
+|  | |  |@
+ >     < @
+|__|_|__|@
+         @@
+   __   @
+ _|  |_ @
+|_    _|@
+  |__|  @
+        @@
+    @
+    @
+ __ @
+|  |@
+ |_|@@
+        @
+ ______ @
+|______|@
+        @
+        @@
+    @
+    @
+ __ @
+|__|@
+    @@
+    ___@
+   /  /@
+ ,' ,' @
+/__/   @
+       @@
+ ______ @
+|      |@
+|  --  |@
+|______|@
+        @@
+ ____   @
+|_   |  @
+ _|  |_ @
+|______|@
+        @@
+ ______ @
+|__    |@
+|    __|@
+|______|@
+        @@
+ ______ @
+|__    |@
+|__    |@
+|______|@
+        @@
+ _____  @
+|  |  | @
+|__    |@
+   |__| @
+        @@
+ ______ @
+|    __|@
+|__    |@
+|______|@
+        @@
+ ______ @
+|    __|@
+|  __  |@
+|______|@
+        @@
+ ______ @
+|      |@
+|_     |@
+  |____|@
+        @@
+ ______ @
+|  __  |@
+|  __  |@
+|______|@
+        @@
+ ______ @
+|  __  |@
+|__    |@
+|______|@
+        @@
+ __ @
+|__|@
+ __ @
+|__|@
+    @@
+ __ @
+|__|@
+ __ @
+|  |@
+ |_|@@
+   __ @
+ ,' _|@
+/  /  @
+\  \_ @
+ `.__|@@
+        @
+ ______ @
+|______|@
+|______|@
+        @@
+ __   @
+|_ `. @
+  \  \@
+ _/  /@
+|__,' @@
+   _____ @
+  |__   |@
+  ',  ,-'@
+   |--|  @
+   '--'  @@
+ _________ @
+|   ___   |@
+|  |  _   |@
+|  |______|@
+|_________|@@
+ _______ @
+|   _   |@
+|       |@
+|___|___|@
+         @@
+ ______ @
+|   __ \@
+|   __ <@
+|______/@
+        @@
+ ______ @
+|      |@
+|   ---|@
+|______|@
+        @@
+ _____  @
+|     \ @
+|  --  |@
+|_____/ @
+        @@
+ _______ @
+|    ___|@
+|    ___|@
+|_______|@
+         @@
+ _______ @
+|    ___|@
+|    ___|@
+|___|    @
+         @@
+ _______ @
+|     __|@
+|    |  |@
+|_______|@
+         @@
+ _______ @
+|   |   |@
+|       |@
+|___|___|@
+         @@
+ _______ @
+|_     _|@
+ _|   |_ @
+|_______|@
+         @@
+   _____ @
+ _|     |@
+|       |@
+|_______|@
+         @@
+ __  __ @
+|  |/  |@
+|     < @
+|__|\__|@
+        @@
+ _____   @
+|     |_ @
+|       |@
+|_______|@
+         @@
+ _______ @
+|   |   |@
+|       |@
+|__|_|__|@
+         @@
+ _______ @
+|    |  |@
+|       |@
+|__|____|@
+         @@
+ _______ @
+|       |@
+|   -   |@
+|_______|@
+         @@
+ ______ @
+|   __ \@
+|    __/@
+|___|   @
+        @@
+ _______ @
+|       |@
+|   -  _|@
+|_______|@
+         @@
+ ______ @
+|   __ \@
+|      <@
+|___|__|@
+        @@
+ _______ @
+|     __|@
+|__     |@
+|_______|@
+         @@
+ _______ @
+|_     _|@
+  |   |  @
+  |___|  @
+         @@
+ _______ @
+|   |   |@
+|   |   |@
+|_______|@
+         @@
+ ___ ___ @
+|   |   |@
+|   |   |@
+ \_____/ @
+         @@
+ ________ @
+|  |  |  |@
+|  |  |  |@
+|________|@
+          @@
+ ___ ___ @
+|   |   |@
+|-     -|@
+|___|___|@
+         @@
+ ___ ___ @
+|   |   |@
+ \     / @
+  |___|  @
+         @@
+ _______ @
+|__     |@
+|     __|@
+|_______|@
+         @@
+ ____ @
+|   _|@
+|  |  @
+|  |_ @
+|____|@@
+___    @
+\  \   @
+ `. `. @
+   \__\@
+       @@
+ ____ @
+|_   |@
+  |  |@
+ _|  |@
+|____|@@
+ ____ @
+|    |@
+|_/\_|@
+      @
+      @@
+        @
+        @
+        @
+ ______ @
+|______|@@
+ __ @
+|  |@
+|_| @
+    @
+    @@
+       @
+.---.-.@
+|  _  |@
+|___._|@
+       @@
+ __    @
+|  |--.@
+|  _  |@
+|_____|@
+       @@
+      @
+.----.@
+|  __|@
+|____|@
+      @@
+    __ @
+.--|  |@
+|  _  |@
+|_____|@
+       @@
+       @
+.-----.@
+|  -__|@
+|_____|@
+       @@
+  ___ @
+.'  _|@
+|   _|@
+|__|  @
+      @@
+       @
+.-----.@
+|  _  |@
+|___  |@
+|_____|@@
+ __    @
+|  |--.@
+|     |@
+|__|__|@
+       @@
+ __ @
+|__|@
+|  |@
+|__|@
+    @@
+  __ @
+ |__|@
+ |  |@
+ |  |@
+|___|@@
+ __    @
+|  |--.@
+|    < @
+|__|__|@
+       @@
+ __ @
+|  |@
+|  |@
+|__|@
+    @@
+          @
+.--------.@
+|        |@
+|__|__|__|@
+          @@
+       @
+.-----.@
+|     |@
+|__|__|@
+       @@
+       @
+.-----.@
+|  _  |@
+|_____|@
+       @@
+       @
+.-----.@
+|  _  |@
+|   __|@
+|__|   @@
+       @
+.-----.@
+|  _  |@
+|__   |@
+   |__|@@
+      @
+.----.@
+|   _|@
+|__|  @
+      @@
+       @
+.-----.@
+|__ --|@
+|_____|@
+       @@
+ __   @
+|  |_ @
+|   _|@
+|____|@
+      @@
+       @
+.--.--.@
+|  |  |@
+|_____|@
+       @@
+       @
+.--.--.@
+|  |  |@
+ \___/ @
+       @@
+          @
+.--.--.--.@
+|  |  |  |@
+|________|@
+          @@
+       @
+.--.--.@
+|_   _|@
+|__.__|@
+       @@
+       @
+.--.--.@
+|  |  |@
+|___  |@
+|_____|@@
+       @
+.-----.@
+|-- __|@
+|_____|@
+       @@
+  ___ @
+ |  _|@
+/  /  @
+\  \_ @
+ |___|@@
+ __ @
+|  |@
+|  |@
+|  |@
+|__|@@
+ ___  @
+|_  | @
+  \  \@
+ _/  /@
+|___| @@
+  ___ @
+ | ' |@
+|_,_| @
+      @
+      @@
+.--.--.@
+|-----|@
+|  -  |@
+|__|__|@
+       @@
+.--.--.@
+|-----|@
+|  _  |@
+|_____|@
+       @@
+.--.--.@
+|--|--|@
+|  |  |@
+|_____|@
+       @@
+.--.--.@
+|---.-|@
+|  _  |@
+|___._|@
+       @@
+.--.--.@
+|-----|@
+|  _  |@
+|_____|@
+       @@
+.--.--.@
+|--|--|@
+|  |  |@
+|_____|@
+       @@
+ _______ @
+|    __ \@
+|    __ <@
+|  |____/@
+|__|     @@

fonts/drpepper.flf

@@ -0,0 +1,569 @@
+flf2a$ 5 4 20 0 16
+Font  : Dr. Pepper (after a name in one sig done in this style).
+Author: Eero Tamminen, t150315@cc.tut.fi.
+
+Characters '#' and '&' are lousy and I'm not very satisfied
+with the '$' or 't'... Suggestions?
+
+Explanation of first line:
+flf2 - "magic number" for file identifiction
+a    - should always be `a', for now
+$    - the "hardblank" -- prints s a blank, but can't be smushed
+5    - height of a character
+4    - height of a character, not including descenders
+20    - max line length (excluding comment lines) +  fudge factor
+0    - default smushmode for this font
+16   - number of comment lines
+
+$@
+$@
+$@
+$@
+$@@
+ _ @
+| |@
+|_/@
+<_>@
+   @@
+ _ _@
+|/|/@
+    @
+    @
+    @@
+       @
+$_|_|_$@
+$_|_|_$@
+  | |  @
+       @@
+    @
+ ||_@
+<_-<@
+/__/@
+ || @@
+   __@
+<>/ /@
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fonts/graffiti.flf

@@ -0,0 +1,617 @@
+flf2a$ 6 5 32 15 4
+Font name is graffiti.flf
+This figlet font designed by Leigh Purdie (purdie@zeus.usq.edu.au)
+'fig-fonted' by Leigh Purdie and Tim Maggio (tim@claremont.com)
+Date: 5 Mar 1994
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fonts/rectangles.flf

@@ -0,0 +1,614 @@
+flf2a$ 6 5 15 1 1
+rectangles.flf by David Villegas <mnementh@netcom.com> 12/94
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+|___|@
+     @@
+     @
+ ___ @
+|_  |@
+  | |@
+  |_|@
+     @@
+     @
+ ___ @
+| . |@
+| . |@
+|___|@
+     @@
+     @
+ ___ @
+| . |@
+|_  |@
+|___|@
+     @@
+   @
+ _ @
+|_|@
+ _ @
+|_|@
+   @@
+   @
+ _ @
+|_|@
+ _ @
+| |@
+|_|@@
+   __@
+  / /@
+ / / @
+< <  @
+ \ \ @
+  \_\@@
+ $$$$$ @
+ $$$$$ @
+ _____ @
+|_____|@
+|_____|@
+ $$$$$ @@
+__   @
+\ \  @
+ \ \ @
+  > >@
+ / / @
+/_/  @@
+ _____ @
+|___  |@
+  |  _|@
+  |_|  @
+  |_|  @
+       @@
+       @
+ _____ @
+|  __ |@
+| |___|@
+|_____|@
+       @@
+       @
+ _____ @
+|  _  |@
+|     |@
+|__|__|@
+       @@
+       @
+ _____ @
+| __  |@
+| __ -|@
+|_____|@
+       @@
+       @
+ _____ @
+|     |@
+|   --|@
+|_____|@
+       @@
+       @
+ ____  @
+|    \ @
+|  |  |@
+|____/ @
+       @@
+       @
+ _____ @
+|   __|@
+|   __|@
+|_____|@
+       @@
+       @
+ _____ @
+|   __|@
+|   __|@
+|__|   @
+       @@
+       @
+ _____ @
+|   __|@
+|  |  |@
+|_____|@
+       @@
+       @
+ _____ @
+|  |  |@
+|     |@
+|__|__|@
+       @@
+       @
+ _____ @
+|     |@
+|-   -|@
+|_____|@
+       @@
+       @
+    __ @
+ __|  |@
+|  |  |@
+|_____|@
+       @@
+       @
+ _____ @
+|  |  |@
+|    -|@
+|__|__|@
+       @@
+       @
+ __    @
+|  |   @
+|  |__ @
+|_____|@
+       @@
+       @
+ _____ @
+|     |@
+| | | |@
+|_|_|_|@
+       @@
+       @
+ _____ @
+|   | |@
+| | | |@
+|_|___|@
+       @@
+       @
+ _____ @
+|     |@
+|  |  |@
+|_____|@
+       @@
+       @
+ _____ @
+|  _  |@
+|   __|@
+|__|   @
+       @@
+       @
+ _____ @
+|     |@
+|  |  |@
+|__  _|@
+   |__|@@
+       @
+ _____ @
+| __  |@
+|    -|@
+|__|__|@
+       @@
+       @
+ _____ @
+|   __|@
+|__   |@
+|_____|@
+       @@
+       @
+ _____ @
+|_   _|@
+  | |  @
+  |_|  @
+       @@
+       @
+ _____ @
+|  |  |@
+|  |  |@
+|_____|@
+       @@
+       @
+ _____ @
+|  |  |@
+|  |  |@
+ \___/ @
+       @@
+       @
+ _ _ _ @
+| | | |@
+| | | |@
+|_____|@
+       @@
+       @
+ __ __ @
+|  |  |@
+|-   -|@
+|__|__|@
+       @@
+       @
+ __ __ @
+|  |  |@
+|_   _|@
+  |_|  @
+       @@
+       @
+ _____ @
+|__   |@
+|   __|@
+|_____|@
+       @@
+ ___ @
+|  _|@
+| |  @
+| |  @
+| |_ @
+|___|@@
+     @
+ _   @
+| \  @
+ \ \ @
+  \_|@
+     @@
+ ___ @
+|_  |@
+  | |@
+  | |@
+ _| |@
+|___|@@
+ _____ @
+|  _  |@
+|_| |_|@
+ $$$$$ @
+ $$$$$ @
+ $$$$$ @@
+ $$$$$ @
+ $$$$$ @
+ $$$$$ @
+ $$$$$ @
+ _____ @
+|_____|@@
+ ___ @
+|_  |@
+  |_|@
+ $$$ @
+ $$$ @
+ $$$ @@
+     @
+     @
+ ___ @
+| .'|@
+|__,|@
+     @@
+     @
+ _   @
+| |_ @
+| . |@
+|___|@
+     @@
+     @
+     @
+ ___ @
+|  _|@
+|___|@
+     @@
+     @
+   _ @
+ _| |@
+| . |@
+|___|@
+     @@
+     @
+     @
+ ___ @
+| -_|@
+|___|@
+     @@
+     @
+ ___ @
+|  _|@
+|  _|@
+|_|  @
+     @@
+     @
+     @
+ ___ @
+| . |@
+|_  |@
+|___|@@
+     @
+ _   @
+| |_ @
+|   |@
+|_|_|@
+     @@
+   @
+ _ @
+|_|@
+| |@
+|_|@
+   @@
+     @
+   _ @
+  |_|@
+  | |@
+ _| |@
+|___|@@
+     @
+ _   @
+| |_ @
+| '_|@
+|_,_|@
+     @@
+   @
+ _ @
+| |@
+| |@
+|_|@
+   @@
+       @
+       @
+ _____ @
+|     |@
+|_|_|_|@
+       @@
+     @
+     @
+ ___ @
+|   |@
+|_|_|@
+     @@
+     @
+     @
+ ___ @
+| . |@
+|___|@
+     @@
+     @
+     @
+ ___ @
+| . |@
+|  _|@
+|_|  @@
+     @
+     @
+ ___ @
+| . |@
+|_  |@
+  |_|@@
+     @
+     @
+ ___ @
+|  _|@
+|_|  @
+     @@
+     @
+     @
+ ___ @
+|_ -|@
+|___|@
+     @@
+     @
+ _   @
+| |_ @
+|  _|@
+|_|  @
+     @@
+     @
+     @
+ _ _ @
+| | |@
+|___|@
+     @@
+     @
+     @
+ _ _ @
+| | |@
+ \_/ @
+     @@
+       @
+       @
+ _ _ _ @
+| | | |@
+|_____|@
+       @@
+     @
+     @
+ _ _ @
+|_'_|@
+|_,_|@
+     @@
+     @
+     @
+ _ _ @
+| | |@
+|_  |@
+|___|@@
+     @
+     @
+ ___ @
+|- _|@
+|___|@
+     @@
+   ___ @
+  |  _|@
+ _| |  @
+|_  |  @
+  | |_ @
+  |___|@@
+ _ @
+| |@
+| |@
+| |@
+| |@
+|_|@@
+ ___   @
+|_  |  @
+  | |_ @
+  |  _|@
+ _| |  @
+|___|  @@
+ _____ @
+|   | |@
+|_|___|@
+ $$$$$ @
+ $$$$$ @
+ $$$$$ @@
+ __ __ @
+|__|__|@
+|  _  |@
+|     |@
+|__|__|@
+       @@
+ __ __ @
+|__|__|@
+|     |@
+|  |  |@
+|_____|@
+       @@
+ __ __ @
+|__|__|@
+|  |  |@
+|  |  |@
+|_____|@
+       @@
+ _ _ @
+|_|_|@
+ ___ @
+| .'|@
+|__,|@
+     @@
+ _ _ @
+|_|_|@
+ ___ @
+| . |@
+|___|@
+     @@
+ _ _ @
+|_|_|@
+ _ _ @
+| | |@
+|___|@
+     @@
+       @
+ _____ @
+| __  |@
+| __ -|@
+|  ___|@
+|_|    @@

go.mod

@@ -1,35 +1,38 @@
 module git.ekzyis.com/ekzyis/delphi.market
 
-go 1.20
+go 1.21
+
+toolchain go1.22.4
 
 replace git.schwanenlied.me/yawning/bsaes.git v0.0.0-20180720073208-c0276d75487e => gitlab.com/yawning/bsaes.git v0.0.0-20180720073208-c0276d75487e
 
 require (
+	github.com/a-h/templ v0.2.747
 	github.com/btcsuite/btcd/btcec/v2 v2.3.2
+	github.com/btcsuite/btcd/btcutil v1.1.3
 	github.com/btcsuite/btcutil v1.0.2
+	github.com/decred/dcrd/dcrec/secp256k1/v4 v4.2.0
 	github.com/joho/godotenv v1.5.1
 	github.com/labstack/echo/v4 v4.11.1
 	github.com/lib/pq v1.10.9
 	github.com/lightninglabs/lndclient v0.16.0-11
 	github.com/lightningnetwork/lnd v0.16.0-beta
+	github.com/lukesampson/figlet v0.0.0-20190211215653-8a3ef4a6ac42
 	github.com/namsral/flag v1.7.4-pre
 	github.com/skip2/go-qrcode v0.0.0-20200617195104-da1b6568686e
-	github.com/stretchr/testify v1.8.1
+	github.com/stretchr/testify v1.8.4
-	golang.org/x/exp v0.0.0-20230905200255-921286631fa9
 	gopkg.in/guregu/null.v4 v4.0.0
 )
 
 require (
 	github.com/aead/chacha20 v0.0.0-20180709150244-8b13a72661da // indirect
 	github.com/aead/siphash v1.0.1 // indirect
-	github.com/andybalholm/brotli v1.0.3 // indirect
+	github.com/andybalholm/brotli v1.1.0 // indirect
 	github.com/beorn7/perks v1.0.1 // indirect
 	github.com/btcsuite/btcd v0.23.5-0.20230125025938-be056b0a0b2f // indirect
-	github.com/btcsuite/btcd/btcutil v1.1.3 // indirect
 	github.com/btcsuite/btcd/btcutil/psbt v1.1.5 // indirect
 	github.com/btcsuite/btcd/chaincfg/chainhash v1.0.2 // indirect
 	github.com/btcsuite/btclog v0.0.0-20170628155309-84c8d2346e9f // indirect
-	github.com/btcsuite/btcutil/psbt v1.0.2 // indirect
 	github.com/btcsuite/btcwallet v0.16.7 // indirect
 	github.com/btcsuite/btcwallet/wallet/txauthor v1.3.2 // indirect
 	github.com/btcsuite/btcwallet/wallet/txrules v1.2.0 // indirect
@@ -39,24 +42,16 @@ require (
 	github.com/btcsuite/go-socks v0.0.0-20170105172521-4720035b7bfd // indirect
 	github.com/btcsuite/websocket v0.0.0-20150119174127-31079b680792 // indirect
 	github.com/btcsuite/winsvc v1.0.0 // indirect
-	github.com/cenkalti/backoff/v4 v4.1.1 // indirect
+	github.com/cenkalti/backoff/v4 v4.3.0 // indirect
 	github.com/cespare/xxhash/v2 v2.1.1 // indirect
-	github.com/coreos/bbolt v1.3.3 // indirect
-	github.com/coreos/etcd v3.3.22+incompatible // indirect
 	github.com/coreos/go-semver v0.3.0 // indirect
-	github.com/coreos/go-systemd v0.0.0-20191104093116-d3cd4ed1dbcf // indirect
 	github.com/coreos/go-systemd/v22 v22.3.2 // indirect
-	github.com/coreos/pkg v0.0.0-20180928190104-399ea9e2e55f // indirect
 	github.com/davecgh/go-spew v1.1.1 // indirect
 	github.com/decred/dcrd/crypto/blake256 v1.0.1 // indirect
-	github.com/decred/dcrd/dcrec/secp256k1/v4 v4.2.0 // indirect
 	github.com/decred/dcrd/lru v1.0.0 // indirect
-	github.com/dgrijalva/jwt-go v3.2.0+incompatible // indirect
 	github.com/dsnet/compress v0.0.1 // indirect
-	github.com/dustin/go-humanize v1.0.0 // indirect
+	github.com/dustin/go-humanize v1.0.1 // indirect
-	github.com/dvyukov/go-fuzz v0.0.0-20210602112143-b1f3d6f4ef4e // indirect
 	github.com/fergusstrange/embedded-postgres v1.10.0 // indirect
-	github.com/form3tech-oss/jwt-go v3.2.3+incompatible // indirect
 	github.com/go-errors/errors v1.0.1 // indirect
 	github.com/gogo/protobuf v1.3.2 // indirect
 	github.com/golang-jwt/jwt v3.2.2+incompatible // indirect
@@ -87,7 +82,6 @@ require (
 	github.com/kkdai/bstream v1.0.0 // indirect
 	github.com/klauspost/compress v1.13.6 // indirect
 	github.com/klauspost/pgzip v1.2.5 // indirect
-	github.com/konsorten/go-windows-terminal-sequences v1.0.3 // indirect
 	github.com/labstack/gommon v0.4.0 // indirect
 	github.com/lightninglabs/gozmq v0.0.0-20191113021534-d20a764486bf // indirect
 	github.com/lightninglabs/neutrino v0.15.0 // indirect
@@ -102,7 +96,7 @@ require (
 	github.com/lightningnetwork/lnd/tor v1.1.0 // indirect
 	github.com/ltcsuite/ltcd v0.0.0-20190101042124-f37f8bf35796 // indirect
 	github.com/mattn/go-colorable v0.1.13 // indirect
-	github.com/mattn/go-isatty v0.0.19 // indirect
+	github.com/mattn/go-isatty v0.0.20 // indirect
 	github.com/matttproud/golang_protobuf_extensions v1.0.1 // indirect
 	github.com/mholt/archiver/v3 v3.5.0 // indirect
 	github.com/miekg/dns v1.1.43 // indirect
@@ -126,6 +120,7 @@ require (
 	github.com/ulikunitz/xz v0.5.10 // indirect
 	github.com/valyala/bytebufferpool v1.0.0 // indirect
 	github.com/valyala/fasttemplate v1.2.2 // indirect
+	github.com/xdg-go/stringprep v1.0.4 // indirect
 	github.com/xi2/xz v0.0.0-20171230120015-48954b6210f8 // indirect
 	github.com/xiang90/probing v0.0.0-20190116061207-43a291ad63a2 // indirect
 	go.etcd.io/bbolt v1.3.6 // indirect
@@ -136,27 +131,22 @@ require (
 	go.etcd.io/etcd/pkg/v3 v3.5.7 // indirect
 	go.etcd.io/etcd/raft/v3 v3.5.7 // indirect
 	go.etcd.io/etcd/server/v3 v3.5.7 // indirect
-	go.opentelemetry.io/contrib v0.20.0 // indirect
 	go.opentelemetry.io/contrib/instrumentation/google.golang.org/grpc/otelgrpc v0.25.0 // indirect
 	go.opentelemetry.io/otel v1.0.1 // indirect
-	go.opentelemetry.io/otel/exporters/otlp v0.20.0 // indirect
 	go.opentelemetry.io/otel/exporters/otlp/otlptrace v1.0.1 // indirect
 	go.opentelemetry.io/otel/exporters/otlp/otlptrace/otlptracegrpc v1.0.1 // indirect
-	go.opentelemetry.io/otel/metric v0.20.0 // indirect
 	go.opentelemetry.io/otel/sdk v1.0.1 // indirect
-	go.opentelemetry.io/otel/sdk/export/metric v0.20.0 // indirect
-	go.opentelemetry.io/otel/sdk/metric v0.20.0 // indirect
 	go.opentelemetry.io/otel/trace v1.0.1 // indirect
 	go.opentelemetry.io/proto/otlp v0.9.0 // indirect
-	go.uber.org/atomic v1.7.0 // indirect
+	go.uber.org/multierr v1.11.0 // indirect
-	go.uber.org/multierr v1.6.0 // indirect
+	go.uber.org/zap v1.27.0 // indirect
-	go.uber.org/zap v1.17.0 // indirect
+	golang.org/x/crypto v0.22.0 // indirect
-	golang.org/x/crypto v0.13.0 // indirect
+	golang.org/x/exp v0.0.0-20230905200255-921286631fa9 // indirect
-	golang.org/x/mod v0.12.0 // indirect
+	golang.org/x/mod v0.17.0 // indirect
-	golang.org/x/net v0.15.0 // indirect
+	golang.org/x/net v0.24.0 // indirect
-	golang.org/x/sys v0.12.0 // indirect
+	golang.org/x/sys v0.21.0 // indirect
-	golang.org/x/term v0.12.0 // indirect
+	golang.org/x/term v0.19.0 // indirect
-	golang.org/x/text v0.13.0 // indirect
+	golang.org/x/text v0.14.0 // indirect
 	golang.org/x/time v0.3.0 // indirect
 	golang.org/x/tools v0.13.0 // indirect
 	google.golang.org/genproto v0.0.0-20210617175327-b9e0b3197ced // indirect

hotreload.sh

@@ -4,12 +4,16 @@ PID=$(pidof delphi.market)
 
 set -e
 
+echo ":: remote port forwarding for dev1.delphi.market ::"
+ssh -fnNR 4322:localhost:4321 dev1.delphi.market
+echo
+
 function restart_server() {
   set +e
   [[ -z "$PID" ]] || kill -15 $PID
   ENV=development make build -B
   set -e
-  ./delphi.market >> server.log 2>&1 &
+  ./delphi.market 2>&1 &
   PID=$(pidof delphi.market)
 }
 
@@ -25,8 +29,7 @@ function cleanup() {
 trap cleanup EXIT
 
 restart
-tail -f server.log &
 
-while inotifywait -r -e modify db/ env/ lib/ lnd/ pages/ public/ server/; do
+while inotifywait -r -e modify db/ env/ lib/ lnd/ public/ server/; do
   restart
 done

lib/figlet.go

@@ -0,0 +1,37 @@
+package lib
+
+import (
+	"log"
+	"os"
+	"strings"
+
+	"github.com/lukesampson/figlet/figletlib"
+	"golang.org/x/exp/rand"
+)
+
+func Figlet(fontName string, text string) string {
+	var (
+		fontsDir = "fonts"
+		// download figlet fonts from http://www.figlet.org/
+		font *figletlib.Font
+		err  error
+	)
+
+	if fontName == "random" {
+		if files, err := os.ReadDir(fontsDir); err != nil {
+			log.Printf("error reading directory %s: %v\n", fontsDir, err)
+			return ""
+		} else {
+			fontName = files[rand.Intn(len(files))].Name()
+		}
+	}
+
+	if font, err = figletlib.GetFontByName(fontsDir, fontName); err != nil {
+		log.Printf("could not find font %s: %v\n", fontName, err)
+		return ""
+	}
+
+	b := new(strings.Builder)
+	figletlib.FPrintMsg(b, text, font, 80, font.Settings(), "left")
+	return b.String()
+}

lib/qr.go

@@ -1,16 +0,0 @@
-package lib
-
-import (
-	"encoding/base64"
-
-	"github.com/skip2/go-qrcode"
-)
-
-func ToQR(s string) (string, error) {
-	png, err := qrcode.Encode(s, qrcode.Medium, 256)
-	if err != nil {
-		return "", err
-	}
-	qr := base64.StdEncoding.EncodeToString([]byte(png))
-	return qr, nil
-}

lnd/invoice.go

@@ -1,163 +0,0 @@
-package lnd
-
-import (
-	"context"
-	"database/sql"
-	"log"
-	"time"
-
-	"git.ekzyis.com/ekzyis/delphi.market/db"
-	"github.com/lightninglabs/lndclient"
-	"github.com/lightningnetwork/lnd/lnrpc/invoicesrpc"
-	"github.com/lightningnetwork/lnd/lntypes"
-	"github.com/lightningnetwork/lnd/lnwire"
-)
-
-func (lnd *LNDClient) CreateInvoice(tx *sql.Tx, ctx context.Context, d *db.DB, pubkey string, msats int64, description string) (*db.Invoice, error) {
-	var (
-		expiry         time.Duration = time.Hour
-		preimage       lntypes.Preimage
-		hash           lntypes.Hash
-		paymentRequest string
-		lnInvoice      *lndclient.Invoice
-		dbInvoice      *db.Invoice
-		err            error
-	)
-	if preimage, err = generateNewPreimage(); err != nil {
-		return nil, err
-	}
-	hash = preimage.Hash()
-	if paymentRequest, err = lnd.Invoices.AddHoldInvoice(ctx, &invoicesrpc.AddInvoiceData{
-		Hash:   &hash,
-		Value:  lnwire.MilliSatoshi(msats),
-		Expiry: int64(expiry / time.Millisecond),
-	}); err != nil {
-		return nil, err
-	}
-	if lnInvoice, err = lnd.Client.LookupInvoice(ctx, hash); err != nil {
-		return nil, err
-	}
-	dbInvoice = &db.Invoice{
-		Pubkey:         pubkey,
-		Msats:          msats,
-		Preimage:       preimage.String(),
-		PaymentRequest: paymentRequest,
-		Hash:           hash.String(),
-		CreatedAt:      lnInvoice.CreationDate,
-		ExpiresAt:      lnInvoice.CreationDate.Add(expiry),
-		Description:    description,
-	}
-	if err := d.CreateInvoice(tx, ctx, dbInvoice); err != nil {
-		return nil, err
-	}
-	return dbInvoice, nil
-}
-
-func (lnd *LNDClient) CheckInvoice(d *db.DB, hash lntypes.Hash) {
-	var (
-		pollInterval = 5 * time.Second
-		invoice      db.Invoice
-		lnInvoice    *lndclient.Invoice
-		preimage     lntypes.Preimage
-		err          error
-	)
-
-	if err = d.FetchInvoice(&db.FetchInvoiceWhere{Hash: hash.String()}, &invoice); err != nil {
-		log.Println(err)
-		return
-	}
-
-	for {
-		ctx, cancel := context.WithTimeout(context.TODO(), 5*time.Second)
-		var tx *sql.Tx
-		if tx, err = d.BeginTx(ctx, nil); err != nil {
-			cancel()
-			continue
-		}
-
-		handleLoopError := func(err error) {
-			log.Println(err)
-			tx.Rollback()
-			cancel()
-			time.Sleep(pollInterval)
-		}
-
-		log.Printf("lookup invoice: hash=%s", hash)
-		if lnInvoice, err = lnd.Client.LookupInvoice(ctx, hash); err != nil {
-			handleLoopError(err)
-			continue
-		}
-		if time.Now().After(invoice.ExpiresAt) {
-			// cancel invoices after expiration if no matching order found yet
-			if err = lnd.Invoices.CancelInvoice(ctx, hash); err != nil {
-				handleLoopError(err)
-				continue
-			}
-			log.Printf("invoice expired: hash=%s", hash)
-			tx.Commit()
-			break
-		}
-		if lnInvoice.AmountPaid == lnInvoice.Amount {
-			if preimage, err = lntypes.MakePreimageFromStr(invoice.Preimage); err != nil {
-				handleLoopError(err)
-				continue
-			}
-			// TODO settle invoice after matching order was found
-			if err = lnd.Invoices.SettleInvoice(ctx, preimage); err != nil {
-				handleLoopError(err)
-				continue
-			}
-			if err = d.ConfirmInvoice(tx, ctx, hash.String(), time.Now(), int(lnInvoice.AmountPaid)); err != nil {
-				handleLoopError(err)
-				continue
-			}
-			log.Printf("invoice confirmed: hash=%s", hash)
-
-			// Run matchmaking if an order was paid
-			var orderId string
-			var deleted bool
-			if err = d.QueryRowContext(ctx,
-				"SELECT o.id, o.deleted_at IS NOT NULL FROM orders o WHERE invoice_id = (SELECT i.id FROM invoices i WHERE hash = $1)",
-				hash.String(),
-			).Scan(&orderId, &deleted); err != nil && err != sql.ErrNoRows {
-				handleLoopError(err)
-				continue
-			}
-			if deleted {
-				// order was canceled before it was paid. refund sats immediately.
-				// this can happen if the market was settled between creating the order and paying the corresponding invoice.
-				if _, err := tx.ExecContext(ctx, "UPDATE users SET msats = msats + $1", int64(lnInvoice.AmountPaid)); err != nil {
-					tx.Rollback()
-					break
-				}
-				log.Printf("order %s canceled. refunded sats to user.", orderId)
-				break
-			}
-			if orderId != "" {
-				go d.RunMatchmaking(orderId)
-			}
-			tx.Commit()
-
-			break
-		}
-		time.Sleep(pollInterval)
-	}
-}
-
-func (lnd *LNDClient) CheckInvoices(d *db.DB) error {
-	var (
-		invoices []db.Invoice
-		err      error
-		hash     lntypes.Hash
-	)
-	if err = d.FetchInvoices(&db.FetchInvoicesWhere{Unconfirmed: true}, &invoices); err != nil {
-		return err
-	}
-	for _, invoice := range invoices {
-		if hash, err = lntypes.MakeHashFromStr(invoice.Hash); err != nil {
-			return err
-		}
-		go lnd.CheckInvoice(d, hash)
-	}
-	return nil
-}

lnd/lnd.go

@@ -1,9 +1,15 @@
 package lnd
 
 import (
+	"context"
+	"database/sql"
 	"log"
+	"time"
 
+	"git.ekzyis.com/ekzyis/delphi.market/db"
 	"github.com/lightninglabs/lndclient"
+	"github.com/lightningnetwork/lnd/invoices"
+	"github.com/lightningnetwork/lnd/lntypes"
 )
 
 type LNDClient struct {
@@ -25,3 +31,67 @@ func New(config *LNDConfig) (*LNDClient, error) {
 	log.Printf("Connected to %s running LND v%s", config.LndAddress, lnd.Version.Version)
 	return lnd, nil
 }
+
+func (lnd *LNDClient) CheckInvoices(db *db.DB) {
+	var (
+		pending bool
+		rows    *sql.Rows
+		hash    lntypes.Hash
+		inv     *lndclient.Invoice
+		err     error
+	)
+	for {
+		// fetch all pending invoices
+		if rows, err = db.Query("" +
+			"SELECT hash, expires_at " +
+			"FROM invoices " +
+			"WHERE confirmed_at IS NULL AND expires_at > CURRENT_TIMESTAMP"); err != nil {
+			log.Printf("error checking invoices: %v", err)
+		}
+
+		pending = false
+
+		for rows.Next() {
+			pending = true
+
+			var (
+				h         string
+				expiresAt time.Time
+			)
+			rows.Scan(&h, &expiresAt)
+
+			if hash, err = lntypes.MakeHashFromStr(h); err != nil {
+				log.Printf("error parsing hash: %v", err)
+				continue
+			}
+
+			if inv, err = lnd.Client.LookupInvoice(context.TODO(), hash); err != nil {
+				log.Printf("error looking up invoice: %v", err)
+				continue
+			}
+
+			if !inv.State.IsFinal() {
+				log.Printf("invoice pending: %s %s", h, time.Until(expiresAt))
+				continue
+			}
+
+			if inv.State == invoices.ContractSettled {
+				if _, err = db.Exec(
+					"UPDATE invoices SET msats_received = $1, confirmed_at = $2 WHERE hash = $3",
+					inv.AmountPaid, inv.SettleDate, h); err != nil {
+					log.Printf("error updating invoice %s: %v", h, err)
+				}
+				log.Printf("invoice confirmed: %s", h)
+			} else if inv.State == invoices.ContractCanceled {
+				log.Printf("invoice expired: %s", h)
+			}
+		}
+
+		// poll faster if there are pending invoices
+		if pending {
+			time.Sleep(1 * time.Second)
+		} else {
+			time.Sleep(5 * time.Second)
+		}
+	}
+}

lnd/types.go

@@ -1 +0,0 @@
-package lnd

lnd/withdrawal.go

@@ -10,21 +10,31 @@ import (
 )
 
 func (lnd *LNDClient) PayInvoice(tx *sql.Tx, bolt11 string) error {
-	maxFeeSats := btcutil.Amount(10)
 	ctx, cancel := context.WithTimeout(context.TODO(), 10*time.Second)
 	defer cancel()
+
 	log.Printf("attempting to pay bolt11 %s ...\n", bolt11)
+
+	maxFeeSats := btcutil.Amount(10)
 	payChan := lnd.Client.PayInvoice(ctx, bolt11, maxFeeSats, nil)
+
 	res := <-payChan
+
 	if res.Err != nil {
 		log.Printf("error paying bolt11: %s -- %s\n", bolt11, res.Err)
 		tx.Rollback()
 		return res.Err
 	}
+
 	log.Printf("successfully paid bolt11: %s\n", bolt11)
-	if _, err := tx.ExecContext(ctx, "UPDATE withdrawals SET paid_at = CURRENT_TIMESTAMP WHERE bolt11 = $1", bolt11); err != nil {
+
+	if _, err := tx.ExecContext(ctx,
+		"UPDATE withdrawals SET paid_at = CURRENT_TIMESTAMP WHERE bolt11 = $1",
+		bolt11,
+	); err != nil {
 		tx.Rollback()
 		return err
 	}
+
 	return res.Err
 }

main.go

@@ -1,6 +1,7 @@
 package main
 
 import (
+	"encoding/hex"
 	"fmt"
 	"log"
 	"net/http"
@@ -20,26 +21,31 @@ var (
 
 func init() {
 	var (
-		dbUrl          string
+		dbUrl       string
-		lndAddress     string
+		lndAddress  string
-		lndCert        string
+		lndCert     string
-		lndMacaroonDir string
+		tlsData     []byte
-		lndNetwork     string
+		lndMacaroon string
-		db_            *db.DB
+		lndNetwork  string
-		lnd_           *lnd.LNDClient
+		db_         *db.DB
-		ctx            router.ServerContext
+		lnd_        *lnd.LNDClient
-		err            error
+		ctx         router.Context
+		err         error
 	)
+
 	if err = env.Load(); err != nil {
 		log.Fatalf("error loading env vars: %v", err)
 	}
+
 	flag.StringVar(&dbUrl, "DATABASE_URL", "delphi.market", "Public URL of website")
 	flag.StringVar(&lndAddress, "LND_ADDRESS", "localhost:10001", "LND gRPC server address")
-	flag.StringVar(&lndCert, "LND_CERT", "", "Path to LND TLS certificate")
+	flag.StringVar(&lndCert, "LND_CERT", "", "LND TLS certificate in hex")
-	flag.StringVar(&lndMacaroonDir, "LND_MACAROON_DIR", "", "LND macaroon directory")
+	flag.StringVar(&lndMacaroon, "LND_MACAROON", "", "LND macaroon in hex")
 	flag.StringVar(&lndNetwork, "LND_NETWORK", "regtest", "LND network")
 	env.Parse()
+
 	figlet()
+
 	log.Printf("Commit:      %s", env.CommitShortSha)
 	log.Printf("Public URL:  %s", env.PublicURL)
 	log.Printf("Environment: %s", env.Env)
@@ -48,19 +54,25 @@ func init() {
 		log.Fatalf("error connecting to database: %v", err)
 	}
 
+	if tlsData, err = hex.DecodeString(lndCert); err != nil {
+		log.Printf("[warn] error decoding LND TLS certificate: %v\n", err)
+	}
+
 	if lnd_, err = lnd.New(&lnd.LNDConfig{
-		LndAddress:  lndAddress,
+		LndAddress:        lndAddress,
-		TLSPath:     lndCert,
+		CustomMacaroonHex: lndMacaroon,
-		MacaroonDir: lndMacaroonDir,
+		TLSData:           string(tlsData),
-		Network:     lndclient.Network(lndNetwork),
+		Network:           lndclient.Network(lndNetwork),
+		Insecure:          false,
 	}); err != nil {
 		log.Printf("[warn] error connecting to LND: %v\n", err)
 		lnd_ = nil
 	} else {
-		lnd_.CheckInvoices(db_)
+		go lnd_.CheckInvoices(db_)
 	}
 
-	ctx = server.ServerContext{
+	ctx = server.Context{
+		Environment:    env.Env,
 		PublicURL:      env.PublicURL,
 		CommitShortSha: env.CommitShortSha,
 		CommitLongSha:  env.CommitLongSha,

pages/index.html

@@ -1,54 +0,0 @@
-<!DOCTYPE html>
-<html>
-
-<head>
-  <title>delphi.market</title>
-  <link rel="icon" type="image/x-icon" href="/favicon.ico" />
-  <link rel="apple-touch-icon" sizes="180x180" href="/apple-touch-icon.png" />
-  <link rel="icon" type="image/png" sizes="32x32" href="/favicon-32x32.png" />
-  <link rel="icon" type="image/png" sizes="16x16" href="/favicon-16x16.png" />
-  <link rel="manifest" href="/site.webmanifest" />
-  <link rel="stylesheet" href="/index.css" />
-  <meta name="viewport" content="width=device-width, initial-scale=1" />
-  <meta name="theme-color" content="#091833" />
-  {{ if eq .ENV "development" }}
-  <script defer src="/hotreload.js"></script>
-  {{ end }}
-</head>
-
-<body>
-  <header class="flex flex-row text-center justify-center pt-1">
-    <nav>
-      <a href="/">home</a>
-      {{ if .session }}
-      <a href='/user'>user</a>
-      {{ else }} <a href="/login">login</a> {{ end }}
-    </nav>
-  </header>
-  <div class="container flex flex-column text-center">
-    <code>
-        <strong>
-          <pre>
-     _      _       _     _ 
-  __| | ___| |_ __ | |__ (_)
- / _` |/ _ \ | '_ \| '_ \| |
-| (_| |  __/ | |_) | | | | |
- \__,_|\___|_| .__/|_| |_|_|
-             |_|            </pre>
-        </strong>
-      </code>
-    <div class="font-mono mb-1">A prediction market using the lightning network [WIP]</div>
-    <div class="font-mono mb-1">ACTIVE MARKETS</div>
-    {{ range .markets }}
-    <a href="/market/{{.Id}}">{{.Description}}</a>
-    {{ end }}
-  </div>
-  <footer class="flex justify-center">
-    <div>
-      <hr />
-      <code><a href="https://github.com/ekzyis/delphi.market/commit/{{.COMMIT_LONG_SHA}}">{{.VERSION}}</a></code>
-    </div>
-  </footer>
-</body>
-
-</html>

pages/invoice.html

@@ -1,113 +0,0 @@
-<!DOCTYPE html>
-<html>
-
-<head>
-    <title>delphi.market</title>
-    <link rel="icon" type="image/x-icon" href="/favicon.ico" />
-    <link rel="apple-touch-icon" sizes="180x180" href="/apple-touch-icon.png" />
-    <link rel="icon" type="image/png" sizes="32x32" href="/favicon-32x32.png" />
-    <link rel="icon" type="image/png" sizes="16x16" href="/favicon-16x16.png" />
-    <link rel="manifest" href="/site.webmanifest" />
-    <link rel="stylesheet" href="/index.css" />
-    <link rel="stylesheet" href="/market.css" />
-    <meta name="viewport" content="width=device-width, initial-scale=1" />
-    <meta name="theme-color" content="#091833" />
-    {{ if eq .ENV "development" }}
-    <script defer src="/hotreload.js"></script>
-    {{ end }}
-</head>
-
-<body>
-    <header class="flex flex-row text-center justify-center pt-1">
-        <nav>
-            <a href="/">home</a>
-            {{ if .session }}
-            <a href='/user'>user</a>
-            {{ else }} <a href="/login">login</a> {{ end }}
-        </nav>
-    </header>
-    <div class="container flex flex-column text-center justify-center">
-        <code>
-        <strong>
-            <pre>
- _  _    ___ ____  
-| || |  / _ \___ \ 
-| || |_| | | |__) |
-|__   _| |_| / __/ 
-   |_|  \___/_____|</pre>
-        </strong>
-        </code>
-        <div class="font-mono mb-1">
-            <div class="mb-1">Payment Required</div>
-            <div id="status" hidden>
-                <div id="status-label"></div>
-                <div id="countdown" hidden>Redirecting in 3 ...</div>
-            </div>
-        </div>
-        <div id="qr">
-            <a href="lightning:{{.lnurl}}">
-                <img class="m-auto mb-1" src="data:image/png;base64,{{.qr}}" width="50%" />
-            </a>
-            <div class="font-mono word-wrap mb-1">{{.lnurl}}</div>
-            <details class="font-mono mb-1 align-left">
-                <summary>details</summary>
-                <div>id: {{.invoice.Id}}</div>
-                <div>amount: {{div .invoice.Msats 1000}} sats</div>
-                <div>created: {{.invoice.CreatedAt}}</div>
-                <div>expiry : {{.invoice.ExpiresAt}}</div>
-                <div class="word-wrap">hash: {{.invoice.Hash}}</div>
-            </details>
-        </div>
-    </div>
-</body>
-<script>
-    const statusElement = document.querySelector("#status")
-    const label = document.querySelector("#status-label")
-    const status = "{{.status}}"
-    const redirectUrl = "{{.redirectURL}}"
-    function poll() {
-        const invoiceId = "{{.invoice.Id}}"
-        const countdown = document.querySelector("#countdown")
-        const redirect = () => {
-            clearInterval(interval)
-            countdown.removeAttribute("hidden")
-            let timer = 2
-            const redirect = setInterval(() => {
-                countdown.textContent = `Redirecting in ${timer--} ...`
-                if (timer === -1) {
-                    window.location.href = redirectUrl;
-                }
-            }, 1000)
-        }
-        const interval = setInterval(async () => {
-            const body = await fetch(`/api/invoice/${invoiceId}`)
-                .then((r) => r.json())
-                .catch(console.error)
-            if (body.ConfirmedAt) {
-                statusElement.removeAttribute("hidden")
-                statusElement.classList.add("yes")
-                label.textContent = "Paid"
-                if (redirectUrl) redirect()
-            } else if (new Date(body.ExpiresAt) <= new Date()) {
-                statusElement.removeAttribute("hidden")
-                statusElement.classList.add("no")
-                label.textContent = "Expired"
-                if (redirectUrl) redirect()
-            }
-        }, 1000)
-    }
-    if (status) {
-        console.log(status)
-        statusElement.removeAttribute("hidden")
-        label.textContent = status
-        if (status === "Paid") {
-            statusElement.classList.add("yes")
-        }
-        else if (status === "Expired") {
-            statusElement.classList.add("no")
-        }
-    }
-    else poll()
-</script>
-
-</html>

pages/login.html

@@ -1,77 +0,0 @@
-<!DOCTYPE html>
-<html>
-
-<head>
-  <title>delphi.market</title>
-  <link rel="icon" type="image/x-icon" href="/favicon.ico" />
-  <link rel="apple-touch-icon" sizes="180x180" href="/apple-touch-icon.png" />
-  <link rel="icon" type="image/png" sizes="32x32" href="/favicon-32x32.png" />
-  <link rel="icon" type="image/png" sizes="16x16" href="/favicon-16x16.png" />
-  <link rel="manifest" href="/site.webmanifest" />
-  <link rel="stylesheet" href="/index.css" />
-  <meta name="viewport" content="width=device-width, initial-scale=1" />
-  <meta name="theme-color" content="#091833" />
-  {{ if eq .ENV "development" }}
-  <script defer src="/hotreload.js"></script>
-  {{ end }}
-</head>
-
-<body>
-  <header class="flex flex-row text-center justify-center pt-1">
-    <nav>
-      <a href="/">home</a>
-      {{ if .session }}
-      <a href='/user'>user</a>
-      {{ else }} <a href="/login">login</a> {{ end }}
-    </nav>
-  </header>
-  <div class="container flex flex-column text-center justify-center">
-    <code>
-        <strong>
-          <pre>
- _             _       
-| | ___   __ _(_)_ __  
-| |/ _ \ / _` | | '_ \ 
-| | (_) | (_| | | | | |
-|_|\___/ \__, |_|_| |_|
-         |___/         </pre>
-        </strong>
-      </code>
-    <div id="qr">
-      <div class="mb-1">Login with Lightning</div>
-      <a href="lightning:{{.lnurl}}"><img class="m-auto mb-1" src="data:image/png;base64,{{.qr}}" width="100%" /></a>
-      <div class="font-mono word-wrap">{{.lnurl}}</div>
-    </div>
-    <div id="lnauth-success" hidden>
-      <div>Login successful</div>
-      <div>You are <span id="lnauth-pubkey" class="font-mono"></span></div>
-      <div id="lnauth-countdown">Redirecting in 3 ...</div>
-    </div>
-  </div>
-</body>
-<script>
-  const qr = document.querySelector("#qr")
-  const success = document.querySelector("#lnauth-success")
-  const pubkey = document.querySelector("#lnauth-pubkey")
-  const countdown = document.querySelector("#lnauth-countdown")
-  const interval = setInterval(async () => {
-    const body = await fetch(`/api/session`)
-      .then((r) => r.json())
-      .catch(console.error)
-    if (body.pubkey) {
-      qr.setAttribute("hidden", true)
-      pubkey.textContent = body.pubkey.slice(0, 10)
-      success.removeAttribute("hidden")
-      clearInterval(interval)
-      let timer = 2
-      const redirect = setInterval(() => {
-        countdown.textContent = `Redirecting in ${timer--} ...`
-        if (timer === -1) {
-          window.location.href = "https://{{.PUBLIC_URL}}/";
-        }
-      }, 1000)
-    }
-  }, 1000)
-</script>
-
-</html>

pages/market.html

@@ -1,82 +0,0 @@
-<!DOCTYPE html>
-<html>
-
-<head>
-    <title>delphi.market</title>
-    <link rel="icon" type="image/x-icon" href="/favicon.ico" />
-    <link rel="apple-touch-icon" sizes="180x180" href="/apple-touch-icon.png" />
-    <link rel="icon" type="image/png" sizes="32x32" href="/favicon-32x32.png" />
-    <link rel="icon" type="image/png" sizes="16x16" href="/favicon-16x16.png" />
-    <link rel="manifest" href="/site.webmanifest" />
-    <link rel="stylesheet" href="/index.css" />
-    <link rel="stylesheet" href="/market.css" />
-    <meta name="viewport" content="width=device-width, initial-scale=1" />
-    <meta name="theme-color" content="#091833" />
-    {{ if eq .ENV "development" }}
-    <script defer src="/hotreload.js"></script>
-    {{ end }}
-</head>
-
-<body>
-    <header class="flex flex-row text-center justify-center pt-1">
-        <nav>
-            <a href="/">home</a>
-            {{ if .session }}
-            <a href='/user'>user</a>
-            {{ else }} <a href="/login">login</a> {{ end }}
-        </nav>
-    </header>
-    <div class="container flex flex-column text-center">
-        <code>
-        <strong>
-          <pre>
-                      _        _   
- _ __ ___   __ _ _ __| | _____| |_ 
-| '_ ` _ \ / _` | '__| |/ / _ \ __|
-| | | | | | (_| | |  |   <  __/ |_ 
-|_| |_| |_|\__,_|_|  |_|\_\___|\__|</pre>
-        </strong>
-      </code>
-        <div class="font-mono mb-1">{{.Description}}</div>
-        <div class="align-left">
-            <span class="font-mono mb-1"><strong>Order Book</strong></span>
-            <table class="w-100p mb-1">
-                <tr>
-                    <th class="align-left"></th>
-                    <th class="align-right"></th>
-                </tr>
-                {{ range .Orders }}
-                <tr class='{{ if eq .Side "BUY" }}yes{{ else }}no{{ end }}'>
-                    <td class="align-center">{{ .Side }}</td>
-                    <td class="align-center">{{ .Share.Description }}</td>
-                    <td class="align-right">{{.Quantity}} @ {{.Price}} ⚡</td>
-                </tr>
-                {{ end }}
-            </table>
-        </div>
-        <hr />
-        <div class="align-left">
-            <span class="font-mono mb-1"><strong>Order Form</strong></span>
-            <form id="form" class="order-form" action="/market/{{$.Id}}/order" method="post">
-                <button id="buy" type="button" class="order-button yes w-100p selected">BUY</button>
-                <button id="sell" type="button" class="order-button no w-100p">SELL</button>
-                <input id="market-id" hidden name="market_id" value="{{$.Id}}" />
-                <input id="side" hidden name="side" value="BUY" />
-                <label>share</label>
-                <select name="share_id">
-                    <option value="{{.YesShare.Id}}">YES</option>
-                    <option value="{{.NoShare.Id}}">NO</option>
-                </select>
-                <label>quantity</label>
-                <input id="quantity" type="number" name="quantity" placeholder="quantity" />
-                <label>price [sats ⚡]</label>
-                <input id="price" type="number" name="price" placeholder="price" />
-                <label id="submit-label"></label>
-                <button type="submit">SUBMIT</button>
-            </form>
-        </div>
-    </div>
-</body>
-<script src="/order.js"></script>
-
-</html>

pages/user.html

@@ -1,106 +0,0 @@
-<!DOCTYPE html>
-<html>
-
-<head>
-    <title>delphi.market</title>
-    <link rel="icon" type="image/x-icon" href="/favicon.ico" />
-    <link rel="apple-touch-icon" sizes="180x180" href="/apple-touch-icon.png" />
-    <link rel="icon" type="image/png" sizes="32x32" href="/favicon-32x32.png" />
-    <link rel="icon" type="image/png" sizes="16x16" href="/favicon-16x16.png" />
-    <link rel="manifest" href="/site.webmanifest" />
-    <link rel="stylesheet" href="/index.css" />
-    <link rel="stylesheet" href="/market.css" />
-    <meta name="viewport" content="width=device-width, initial-scale=1" />
-    <meta name="theme-color" content="#091833" />
-    {{ if eq .ENV "development" }}
-    <script defer src="/hotreload.js"></script>
-    {{ end }}
-</head>
-
-<body>
-    <header class="flex flex-row text-center justify-center pt-1">
-        <nav>
-            <a href="/">home</a>
-            {{ if .session }}
-            <a href='/user'>user</a>
-            {{ else }} <a href="/login">login</a> {{ end }}
-        </nav>
-    </header>
-    <div class="container flex flex-column text-center">
-        <code>
-        <strong>
-          <pre>
- _   _ ___  ___ _ __ 
-| | | / __|/ _ \ '__|
-| |_| \__ \  __/ |   
- \__,_|___/\___|_|   </pre>
-        </strong>
-      </code>
-        <div class="font-mono mb-1 align-left word-wrap">
-            <div class="mb-1">
-                You are: {{substr .session.Pubkey 0 8}}
-            </div>
-            <div>
-                <form class="align-left" action="/logout" method="post">
-                    <button type="submit">logout</button>
-                </form>
-            </div>
-        </div>
-        <div class="align-left mb-1">
-            <span class="font-mono mb-1"><strong>Open Orders</strong></span>
-            <table class="w-100p mb-1">
-                <tr>
-                    <th class="align-center">Market</th>
-                    <th class="align-center"></th>
-                    <th class="align-center"></th>
-                    <th class="align-right"></th>
-                </tr>
-                {{ range .Orders }}
-                {{ if .Invoice.ConfirmedAt.Valid }}
-                <tr class='{{ if eq .Side "BUY" }}yes{{ else }}no{{ end }}'>
-                    <td class="align-center">
-                        <a href="/market/{{.Share.MarketId}}">{{.Share.MarketId}}</a>
-                    </td>
-                    <td class="align-center">{{.Side}}</td>
-                    <td class="align-center">{{.Share.Description}}</td>
-                    <td class="align-right">{{.Quantity}} @ {{.Price}} ⚡</td>
-                </tr>
-                {{ end }}
-                {{ end }}
-            </table>
-        </div>
-        <div class="align-left mb-1">
-            <span class="font-mono mb-1"><strong>Unpaid Orders</strong></span>
-            <table class="w-100p mb-1">
-                <tr>
-                    <th class="align-center">Market</th>
-                    <th class="align-center"></th>
-                    <th class="align-center"></th>
-                    <th class="align-right"></th>
-                    <th class="align-center">Invoice</th>
-                </tr>
-                {{ range .Orders }}
-                {{ if not .Invoice.ConfirmedAt.Valid }}
-                <tr class='{{ if eq .Side "BUY" }}yes{{ else }}no{{ end }}'>
-                    <td class="align-center">
-                        <a href="/market/{{.Share.MarketId}}">{{.Share.MarketId}}</a>
-                    </td>
-                    <td class="align-center">{{.Side}}</td>
-                    <td class="align-center">{{.Share.Description}}</td>
-                    <td class="align-right">{{.Quantity}} @ {{.Price}} ⚡</td>
-                    <td class="align-center"><a href="/invoice/{{.InvoiceId}}">invoice</a></td>
-                </tr>
-                {{ end }}
-                {{ end }}
-            </table>
-        </div>
-    </div>
-    <footer class="flex justify-center">
-        <div>
-            <hr />
-            <code><a href="https://github.com/ekzyis/delphi.market/commit/{{.COMMIT_LONG_SHA}}">{{.VERSION}}</a></code>
-        </div>
-    </footer>
-</body>
-
-</html>

public/400.html

@@ -1,37 +0,0 @@
-<!DOCTYPE html>
-<html>
-
-<head>
-  <title>delphi.market</title>
-  <link rel="icon" type="image/x-icon" href="/favicon.ico" />
-  <link rel="apple-touch-icon" sizes="180x180" href="/apple-touch-icon.png" />
-  <link rel="icon" type="image/png" sizes="32x32" href="/favicon-32x32.png" />
-  <link rel="icon" type="image/png" sizes="16x16" href="/favicon-16x16.png" />
-  <link rel="manifest" href="/site.webmanifest" />
-  <link rel="stylesheet" href="/index.css" />
-  <meta name="viewport" content="width=device-width, initial-scale=1" />
-  <meta name="theme-color" content="#091833" />
-</head>
-
-<body>
-  <header class="flex flex-row text-center justify-center pt-1">
-    <nav>
-      <a href="/">home</a>
-    </nav>
-  </header>
-  <div class="container flex flex-column text-center">
-    <code>
-        <strong>
-          <pre>
- _  _    ___   ___  
-| || |  / _ \ / _ \ 
-| || |_| | | | | | |
-|__   _| |_| | |_| |
-   |_|  \___/ \___/ </pre>
-        </strong>
-      </code>
-    <div class="font-mono mb-1">Bad Request</div>
-  </div>
-</body>
-
-</html>

public/404.html

@@ -1,37 +0,0 @@
-<!DOCTYPE html>
-<html>
-
-<head>
-  <title>delphi.market</title>
-  <link rel="icon" type="image/x-icon" href="/favicon.ico" />
-  <link rel="apple-touch-icon" sizes="180x180" href="/apple-touch-icon.png" />
-  <link rel="icon" type="image/png" sizes="32x32" href="/favicon-32x32.png" />
-  <link rel="icon" type="image/png" sizes="16x16" href="/favicon-16x16.png" />
-  <link rel="manifest" href="/site.webmanifest" />
-  <link rel="stylesheet" href="/index.css" />
-  <meta name="viewport" content="width=device-width, initial-scale=1" />
-  <meta name="theme-color" content="#091833" />
-</head>
-
-<body>
-  <header class="flex flex-row text-center justify-center pt-1">
-    <nav>
-      <a href="/">home</a>
-    </nav>
-  </header>
-  <div class="container flex flex-column text-center">
-    <code>
-        <strong>
-          <pre>
- _  _    ___  _  _   
-| || |  / _ \| || |  
-| || |_| | | | || |_ 
-|__   _| |_| |__   _|
-   |_|  \___/   |_|  </pre>
-        </strong>
-      </code>
-    <div class="font-mono mb-1">Not Found</div>
-  </div>
-</body>
-
-</html>

public/405.html

@@ -1,37 +0,0 @@
-<!DOCTYPE html>
-<html>
-
-<head>
-  <title>delphi.market</title>
-  <link rel="icon" type="image/x-icon" href="/favicon.ico" />
-  <link rel="apple-touch-icon" sizes="180x180" href="/apple-touch-icon.png" />
-  <link rel="icon" type="image/png" sizes="32x32" href="/favicon-32x32.png" />
-  <link rel="icon" type="image/png" sizes="16x16" href="/favicon-16x16.png" />
-  <link rel="manifest" href="/site.webmanifest" />
-  <link rel="stylesheet" href="/index.css" />
-  <meta name="viewport" content="width=device-width, initial-scale=1" />
-  <meta name="theme-color" content="#091833" />
-</head>
-
-<body>
-  <header class="flex flex-row text-center justify-center pt-1">
-    <nav>
-      <a href="/">home</a>
-    </nav>
-  </header>
-  <div class="container flex flex-column text-center">
-    <code>
-        <strong>
-          <pre>
- _  _    ___  ____  
-| || |  / _ \| ___| 
-| || |_| | | |___ \ 
-|__   _| |_| |___) |
-   |_|  \___/|____/ </pre>
-        </strong>
-      </code>
-    <div class="font-mono mb-1">Method Not Allowed</div>
-  </div>
-</body>
-
-</html>

public/500.html

@@ -1,37 +0,0 @@
-<!DOCTYPE html>
-<html>
-
-<head>
-  <title>delphi.market</title>
-  <link rel="icon" type="image/x-icon" href="/favicon.ico" />
-  <link rel="apple-touch-icon" sizes="180x180" href="/apple-touch-icon.png" />
-  <link rel="icon" type="image/png" sizes="32x32" href="/favicon-32x32.png" />
-  <link rel="icon" type="image/png" sizes="16x16" href="/favicon-16x16.png" />
-  <link rel="manifest" href="/site.webmanifest" />
-  <link rel="stylesheet" href="/index.css" />
-  <meta name="viewport" content="width=device-width, initial-scale=1" />
-  <meta name="theme-color" content="#091833" />
-</head>
-
-<body>
-  <header class="flex flex-row text-center justify-center pt-1">
-    <nav>
-      <a href="/">home</a>
-    </nav>
-  </header>
-  <div class="container flex flex-column text-center">
-    <code>
-        <strong>
-          <pre>
- ____   ___   ___  
-| ___| / _ \ / _ \ 
-|___ \| | | | | | |
- ___) | |_| | |_| |
-|____/ \___/ \___/ </pre>
-        </strong>
-      </code>
-    <div class="font-mono mb-1">Internal Server Error</div>
-  </div>
-</body>
-
-</html>

public/css/_tw-input.css

@@ -0,0 +1,168 @@
+@tailwind base;
+@tailwind components;
+@tailwind utilities;
+
+:root {
+  --background: #191d21;
+  --color: #d3d3d3;
+  --muted: #6c757d;
+  --lightning: #fada5e;
+  --nostr: #8d45dd;
+  --black: #000;
+  --white: #fff;
+  --bg-success: #149e613d;
+  --fg-success:  #35df8d;
+  --bg-error: #f5395e3d;
+  --fg-error: #ff7386;
+}
+
+@layer base {
+  body {
+    background-color: var(--background);
+    color: var(--color);
+    transition: background-color 150ms ease-in;
+  }
+
+  #content {
+    min-height: 85svh;
+  }
+
+  @media (min-width: 768px) {
+    #content {
+      min-height: 90svh;
+    }
+  }
+
+  footer {
+    color: var(--muted);
+  }
+
+  hr {
+    border-color: var(--muted);
+    border-style: dashed;
+    @apply pb-1;
+  }
+
+  a:not(.no-link),
+  button[hx-get],
+  button[hx-post],
+  button[type="submit"],
+  .button {
+    transition: background-color 150ms ease-in, color 150ms ease-in;
+  }
+
+  a:not(.no-link):hover,
+  button[hx-get]:hover,
+  button[hx-post]:hover,
+  button[type="submit"]:hover,
+  .button:hover {
+    background-color: var(--color);
+    color: var(--background);
+  }
+
+  a:not(.no-link),
+  button[hx-get] {
+    text-decoration: underline;
+  }
+
+  button[hx-post],
+  button[type="submit"],
+  .button {
+    border-width: 1px;
+  }
+
+  nav a,
+  button[hx-get],
+  button[hx-post],
+  button[type="submit"] {
+    padding: 0 0.25em;
+  }
+
+  h1 {
+    font-size: 24px
+  }
+
+  iframe {
+    width: 300px;
+    aspect-ratio: 560/315;
+  }
+
+  .text-muted {
+    color: var(--muted);
+  }
+
+  .text-reset {
+    color: var(--color);
+  }
+
+  .hitbox {
+    padding: 15px;
+    margin: -15px;
+  }
+
+  .neon {
+    border: none;
+    padding: 0.5em 3em;
+    transition: background-color 150ms ease-in, color 150ms ease-in;
+  }
+
+  .neon.success {
+    background-color: var(--bg-success);
+    color: var(--fg-success);
+  }
+
+  .neon.success:hover {
+    background-color: var(--fg-success);
+    color: var(--white);
+  }
+
+  .neon.error {
+    background-color: var(--bg-error);
+    color: var(--fg-error);
+  }
+
+  .neon.error:hover {
+    background-color: var(--fg-error);
+    color: var(--white);
+  }
+
+  .figlet {
+    display: flex;
+    align-items: center;
+    justify-content: center;
+    height: 144px;
+    @apply my-3
+  }
+
+  .login, .signup {
+    text-decoration: none !important;
+    transition: none !important;
+    padding: 0.25em 1em !important;
+    width: fit-content;
+    margin: 0 auto;
+    border-radius: 5px;
+    font-weight: bold;
+  }
+
+  .lightning {
+    background-color: var(--lightning) !important;
+    color: var(--black) !important;
+  }
+
+  .lightning:hover {
+    filter: brightness(125%) drop-shadow(0 0 0.33rem var(--lightning));
+  }
+
+  .nostr {
+    background-color: var(--nostr) !important;
+    color: var(--white) !important;
+  }
+
+  .nostr:hover {
+    filter: brightness(125%) drop-shadow(0 0 0.33rem var(--nostr));
+  }
+
+  #modal {
+    backdrop-filter: blur(10px);
+  }
+}

public/index.css

@@ -1,173 +0,0 @@
-body {
-  background-color: #091833;
-  color: #ffffff;
-  caret-color: transparent;
-  font-family: Arial, Helvetica, sans-serif;
-  margin: 0;
-  display: flex;
-  flex-direction: column;
-  justify-content: center;
-}
-
-nav {
-  display: flex;
-}
-a {
-  color: #8787a4;
-  text-decoration: underline;
-}
-a:hover {
-  background: #8787A4;
-  color: #ffffff;
-}
-a.selected {
-  background: #8787A4;
-  color: #ffffff;
-}
-nav > a {
-  margin: 0 3px;
-}
-nav > form > button {
-  color: #8787a4;
-  text-decoration: underline;
-  border: none;
-  outline: none;
-  background: none;
-  cursor: pointer;
-  padding: 0;
-  text-decoration: underline;
-  font-family: inherit;
-  font-size: inherit;
-  margin: 0 3px;
-}
-nav > form > button:hover {
-  background: #8787A4;
-  color: #ffffff;
-}
-
-@media (min-width: 768px) {
-  #qr > a > img {
-    width: 50%;
-  }
-}
-@media (min-width: 1024px) {
-  #qr > a > img {
-    width: 30%;
-  }
-}
-#qr > a:hover {
-  background: none;
-}
-
-hr {
-  border: none;
-  height: 1px;
-  background: repeating-linear-gradient(90deg,#fff,#fff 6px,transparent 1px,transparent 8px);
-}
-
-ul {
-  text-align: left;
-}
-
-.container {
-  -webkit-box-sizing: border-box;
-  -moz-box-sizing:    border-box;
-  -ms-box-sizing:     border-box;
-  -o-box-sizing:      border-box;
-  box-sizing:         border-box;
-  margin: 1em auto;
-  padding: 0 1em;
-  min-width: 40vw;
-  max-width: 100vw;
-}
-
-@media (min-width: 640px) {
-  .container {
-    max-width: 100vw;
-  }
-}
-
-@media (min-width: 768px) {
-  .container {
-    max-width: 80vw;
-  }
-}
-
-@media (min-width: 1024px) {
-  .container {
-    max-width: 60vw;
-  }
-}
-
-.flex {
-  display: flex;
-}
-.flex-column {
-  flex-direction: column;
-}
-
-.text-center {
-  text-align: center;
-}
-.text-left {
-  text-align: left;
-}
-
-.font-bold {
-  font: bold;
-}
-.font-mono {
-  font-family: "Lucida Console", "Courier New", monospace;
-}
-
-.justify-center {
-  justify-content: center;
-}
-
-.items-center {
-  align-items: center;
-}
-
-.h-100vh {
-  height: 100vh;
-}
-
-.w-100p {
-  width: 100%;
-}
-
-.m-auto {
-  margin: auto;
-}
-.mb-1 {
-  margin-bottom: 1em;
-}
-.mb-s {
-  margin-bottom: 0.2em;
-}
-.mr-s {
-  margin-right: 0.2em;
-}
-.pt-1 {
-  padding-top: 1em;
-}
-.mx-1 {
-  margin: 0 .2em;
-}
-
-.word-wrap {
-  word-wrap: break-word;
-}
-
-.align-left {
-  text-align: left;
-}
-.align-center {
-  text-align: center;
-}
-.align-right {
-  text-align: right;
-}
-.scroll-x {
-  overflow-x: scroll;
-}

public/market.css

@@ -1,47 +0,0 @@
-.order-button {
-    border: none;
-    margin: auto;
-    border-radius: 4px;
-    font-size: 20px;
-}
-
-.order-form {
-    display: grid;
-    grid-template-columns: 1fr 1fr;
-    grid-template-rows: 1fr 1fr;
-}
-
-.sx-1 {
-    margin: 0 1rem;
-    padding: 0 1rem;
-}
-
-.yes {
-    background-color: rgba(20,158,97,.24);
-    color: #35df8d;
-}
-button.yes:hover {
-    background-color: #35df8d;
-    color: white;
-}
-button.yes.selected {
-    background-color: #35df8d;
-    color: white;
-}
-
-.no {
-    background-color: rgba(245,57,94,.24);
-    color: #ff7386;
-}
-button.no:hover {
-    background-color: #ff7386;
-    color: white;
-}
-button.no.selected {
-    background-color: #ff7386;
-    color: white;
-}
-
-th {
-    font-size: small;
-}

public/order.js

@@ -1,16 +0,0 @@
-const marketId = document.querySelector("#market-id").value
-
-const buyBtn = document.querySelector("#buy")
-const sellBtn = document.querySelector("#sell")
-const sideInput = document.querySelector("#side")
-
-buyBtn.onclick = function (e) {
-    buyBtn.classList.add("selected")
-    sellBtn.classList.remove("selected")
-    sideInput.setAttribute("value", "BUY")
-}
-sellBtn.onclick = function(e) {
-    buyBtn.classList.remove("selected")
-    sellBtn.classList.add("selected")
-    sideInput.setAttribute("value", 'SELL')
-}

server/auth/lnauth.go

@@ -8,58 +8,74 @@ import (
 
 	"github.com/btcsuite/btcd/btcec/v2"
 	"github.com/btcsuite/btcutil/bech32"
+	"github.com/decred/dcrd/dcrec/secp256k1/v4"
 
 	"git.ekzyis.com/ekzyis/delphi.market/env"
 )
 
-type LNAuth struct {
+type LnAuth struct {
 	K1    string
 	LNURL string
 }
 
-type LNAuthResponse struct {
+type LnAuthCallback struct {
-	K1  string `query:"k1"`
+	K1     string `query:"k1"`
-	Sig string `query:"sig"`
+	Sig    string `query:"sig"`
-	Key string `query:"key"`
+	Key    string `query:"key"`
+	Action string `query:"action"`
 }
 
-func NewLNAuth() (*LNAuth, error) {
+func NewLnAuth(action string) (*LnAuth, error) {
-	k1 := make([]byte, 32)
+	var (
-	_, err := rand.Read(k1)
+		k1        = make([]byte, 32)
-	if err != nil {
+		k1hex     string
+		url       []byte
+		bech32Url []byte
+		lnurl     string
+		err       error
+	)
+
+	if _, err := rand.Read(k1); err != nil {
 		return nil, fmt.Errorf("rand.Read error: %w", err)
 	}
-	k1hex := hex.EncodeToString(k1)
+
-	url := []byte(fmt.Sprintf("https://%s/api/login/callback?tag=login&k1=%s&action=login", env.PublicURL, k1hex))
+	k1hex = hex.EncodeToString(k1)
-	conv, err := bech32.ConvertBits(url, 8, 5, true)
+	url = []byte(fmt.Sprintf("https://%s/api/lnauth/callback?tag=login&k1=%s&action=%s", env.PublicURL, k1hex, action))
-	if err != nil {
+
+	if bech32Url, err = bech32.ConvertBits(url, 8, 5, true); err != nil {
 		return nil, fmt.Errorf("bech32.ConvertBits error: %w", err)
 	}
-	lnurl, err := bech32.Encode("lnurl", conv)
+
-	if err != nil {
+	if lnurl, err = bech32.Encode("lnurl", bech32Url); err != nil {
 		return nil, fmt.Errorf("bech32.Encode error: %w", err)
 	}
-	return &LNAuth{k1hex, lnurl}, nil
+
+	return &LnAuth{k1hex, lnurl}, nil
 }
 
-func VerifyLNAuth(r *LNAuthResponse) (bool, error) {
+func VerifyLNAuth(r *LnAuthCallback) (bool, error) {
-	var k1Bytes, sigBytes, keyBytes []byte
+	var (
-	k1Bytes, err := hex.DecodeString(r.K1)
+		k1Bytes, sigBytes, keyBytes []byte
-	if err != nil {
+		key                         *secp256k1.PublicKey
+		err                         error
+	)
+
+	if k1Bytes, err = hex.DecodeString(r.K1); err != nil {
 		return false, fmt.Errorf("k1 decode error: %w", err)
 	}
-	sigBytes, err = hex.DecodeString(r.Sig)
+
-	if err != nil {
+	if sigBytes, err = hex.DecodeString(r.Sig); err != nil {
 		return false, fmt.Errorf("sig decode error: %w", err)
 	}
-	keyBytes, err = hex.DecodeString(r.Key)
+
-	if err != nil {
+	if keyBytes, err = hex.DecodeString(r.Key); err != nil {
 		return false, fmt.Errorf("key decode error: %w", err)
 	}
-	key, err := btcec.ParsePubKey(keyBytes)
+
-	if err != nil {
+	if key, err = btcec.ParsePubKey(keyBytes); err != nil {
 		return false, fmt.Errorf("key parse error: %w", err)
 	}
+
 	ecdsaKey := ecdsa.PublicKey{Curve: btcec.S256(), X: key.X(), Y: key.Y()}
 	return ecdsa.VerifyASN1(&ecdsaKey, k1Bytes, sigBytes), nil
 }

server/error.go

@@ -1,20 +1,49 @@
 package server
 
 import (
+	"bytes"
 	"net/http"
 	"strings"
 
+	"git.ekzyis.com/ekzyis/delphi.market/server/router/context"
+	"git.ekzyis.com/ekzyis/delphi.market/server/router/pages"
+	"github.com/a-h/templ"
 	"github.com/labstack/echo/v4"
 )
 
-func httpErrorHandler(err error, c echo.Context) {
+func httpErrorHandler(sc context.Context) echo.HTTPErrorHandler {
-	c.Logger().Error(err)
+	return func(err error, c echo.Context) {
-	code := http.StatusInternalServerError
+		var (
-	if httpError, ok := err.(*echo.HTTPError); ok {
+			code = http.StatusInternalServerError
-		code = httpError.Code
+			page = pages.Error
+			buf  *bytes.Buffer
+		)
+
+		c.Logger().Error(err)
+
+		if httpError, ok := err.(*echo.HTTPError); ok {
+			code = httpError.Code
+		}
+
+		if strings.Contains(err.Error(), "violates check constraint") ||
+			strings.Contains(err.Error(), "violates unique constraint") {
+			code = 400
+		}
+
+		buf = templ.GetBuffer()
+		defer templ.ReleaseBuffer(buf)
+
+		if err = page(code).Render(context.RenderContext(sc, c), buf); err != nil {
+			c.Logger().Error(err)
+			code = http.StatusInternalServerError
+		}
+
+		// make sure that HTMX selects and targets correct element
+		c.Response().Header().Add("HX-Retarget", "#content")
+		c.Response().Header().Add("HX-Reselect", "#content")
+
+		if err = c.HTML(code, buf.String()); err != nil {
+			c.Logger().Error(err)
+		}
 	}
-	if strings.Contains(err.Error(), "violates check constraint") || strings.Contains(err.Error(), "violates unique constraint") {
-		code = 400
-	}
-	c.JSON(code, map[string]any{"status": code})
 }

server/router/context/context.go

@@ -1,12 +1,15 @@
 package context
 
 import (
+	"context"
+
 	"git.ekzyis.com/ekzyis/delphi.market/db"
 	"git.ekzyis.com/ekzyis/delphi.market/lnd"
 	"github.com/labstack/echo/v4"
 )
 
-type ServerContext struct {
+type Context struct {
+	context.Context
 	Environment    string
 	PublicURL      string
 	CommitShortSha string
@@ -16,19 +19,20 @@ type ServerContext struct {
 	Lnd            *lnd.LNDClient
 }
 
-func (sc *ServerContext) Render(c echo.Context, code int, name string, data map[string]any) error {
+type RenderContextKey string
-	envVars := map[string]any{
-		"PUBLIC_URL":       sc.PublicURL,
-		"COMMIT_SHORT_SHA": sc.CommitShortSha,
-		"COMMIT_LONG_SHA":  sc.CommitLongSha,
-		"VERSION":          sc.Version,
-	}
-	merge(&data, &envVars)
-	return c.Render(code, name, data)
-}
 
-func merge[T comparable](target *map[T]any, src *map[T]any) {
+var (
-	for k, v := range *src {
+	EnvContextKey     RenderContextKey = "env"
-		(*target)[k] = v
+	SessionContextKey RenderContextKey = "session"
-	}
+	CommitContextKey  RenderContextKey = "commit"
+	ReqPathContextKey RenderContextKey = "reqPath"
+)
+
+func RenderContext(sc Context, c echo.Context) context.Context {
+	ctx := c.Request().Context()
+	ctx = context.WithValue(ctx, EnvContextKey, sc.Environment)
+	ctx = context.WithValue(ctx, SessionContextKey, c.Get("session"))
+	ctx = context.WithValue(ctx, CommitContextKey, sc.CommitShortSha)
+	ctx = context.WithValue(ctx, ReqPathContextKey, c.Request().URL.Path)
+	return ctx
 }

server/router/handler/about.go

@@ -0,0 +1,13 @@
+package handler
+
+import (
+	"git.ekzyis.com/ekzyis/delphi.market/server/router/context"
+	"git.ekzyis.com/ekzyis/delphi.market/server/router/pages"
+	"github.com/labstack/echo/v4"
+)
+
+func HandleAbout(sc context.Context) echo.HandlerFunc {
+	return func(c echo.Context) error {
+		return pages.About().Render(context.RenderContext(sc, c), c.Response().Writer)
+	}
+}

server/router/handler/auth.go

@@ -0,0 +1,225 @@
+package handler
+
+import (
+	"database/sql"
+	"net/http"
+	"time"
+
+	"git.ekzyis.com/ekzyis/delphi.market/server/auth"
+	"git.ekzyis.com/ekzyis/delphi.market/server/router/context"
+	"git.ekzyis.com/ekzyis/delphi.market/server/router/pages"
+	"github.com/labstack/echo/v4"
+	"github.com/lib/pq"
+)
+
+func HandleAuth(sc context.Context, action string) echo.HandlerFunc {
+	return func(c echo.Context) error {
+
+		if c.Param("method") == "lightning" {
+			return LnAuth(sc, c, action)
+		}
+
+		if c.Param("method") == "nostr" {
+			return NostrAuth(sc, c, action)
+		}
+
+		// on session guard redirects to /login,
+		// we need to make sure that HTMX selects and targets correct element
+		c.Response().Header().Add("HX-Retarget", "#content")
+		c.Response().Header().Add("HX-Reselect", "#content")
+
+		return pages.Auth(mapAction(action)).Render(context.RenderContext(sc, c), c.Response().Writer)
+	}
+}
+
+func LnAuth(sc context.Context, c echo.Context, action string) error {
+	var (
+		db        = sc.Db
+		ctx       = c.Request().Context()
+		lnAuth    *auth.LnAuth
+		sessionId string
+		// sessions expire in 30 days. TODO: refresh sessions
+		expires = time.Now().Add(60 * 60 * 24 * 30 * time.Second)
+		err     error
+	)
+
+	if lnAuth, err = auth.NewLnAuth(action); err != nil {
+		return err
+	}
+
+	if err = db.QueryRowContext(
+		ctx,
+		"INSERT INTO lnauth(k1, lnurl) VALUES($1, $2) RETURNING session_id",
+		lnAuth.K1, lnAuth.LNURL).Scan(&sessionId); err != nil {
+		return err
+	}
+
+	c.SetCookie(&http.Cookie{
+		Name:     "session",
+		HttpOnly: true,
+		Path:     "/",
+		Value:    sessionId,
+		Secure:   true,
+		Expires:  expires,
+	})
+
+	return pages.LnAuth(lnAuth.LNURL, mapAction(action)).Render(context.RenderContext(sc, c), c.Response().Writer)
+}
+
+func HandleLnAuthCallback(sc context.Context) echo.HandlerFunc {
+	return func(c echo.Context) error {
+		var (
+			db        = sc.Db
+			tx        *sql.Tx
+			ctx       = c.Request().Context()
+			query     auth.LnAuthCallback
+			sessionId string
+			userId    int
+			ok        bool
+			err       error
+			pqErr     *pq.Error
+		)
+
+		bail := func(code int, reason string) error {
+			if tx != nil {
+				// manual rollback is only required for tests afaik
+				tx.Rollback()
+			}
+			return c.JSON(code, map[string]string{"status": "ERROR", "reason": reason})
+		}
+
+		if err = c.Bind(&query); err != nil {
+			return bail(http.StatusInternalServerError, err.Error())
+		} else if query.K1 == "" || query.Sig == "" || query.Key == "" || query.Action == "" {
+			return bail(http.StatusBadRequest, "bad query")
+		}
+
+		if tx, err = db.BeginTx(ctx, &sql.TxOptions{Isolation: sql.LevelReadCommitted}); err != nil {
+			return bail(http.StatusInternalServerError, err.Error())
+		}
+
+		err = tx.QueryRow("SELECT session_id FROM lnauth WHERE k1 = $1 LIMIT 1", query.K1).Scan(&sessionId)
+		if err == sql.ErrNoRows {
+			return bail(http.StatusNotFound, "session not found")
+		} else if err != nil {
+			return bail(http.StatusInternalServerError, err.Error())
+		}
+
+		ok, err = auth.VerifyLNAuth(&query)
+		if err != nil {
+			return bail(http.StatusInternalServerError, err.Error())
+		} else if !ok {
+			return bail(http.StatusBadRequest, "bad signature")
+		}
+
+		if query.Action == "register" {
+			err = tx.QueryRow(""+
+				"INSERT INTO users(ln_pubkey) VALUES ($1) "+
+				"ON CONFLICT(ln_pubkey) DO UPDATE SET ln_pubkey = $1 "+
+				"RETURNING id", query.Key).Scan(&userId)
+			if err != nil {
+				pqErr, ok = err.(*pq.Error)
+				if ok && pqErr.Code == "23505" {
+					return bail(http.StatusBadRequest, "user already exists")
+				}
+				return bail(http.StatusInternalServerError, err.Error())
+			}
+		} else if query.Action == "login" {
+			err = tx.QueryRow("SELECT id FROM users WHERE ln_pubkey = $1", query.Key).Scan(&userId)
+			if err == sql.ErrNoRows {
+				return bail(http.StatusNotFound, "user not found")
+			} else if err != nil {
+				return bail(http.StatusInternalServerError, err.Error())
+			}
+		} else {
+			return bail(http.StatusBadRequest, "bad action")
+		}
+
+		if _, err = tx.Exec("INSERT INTO sessions(id, user_id) VALUES($1, $2)", sessionId, userId); err != nil {
+			return bail(http.StatusInternalServerError, err.Error())
+		}
+
+		if _, err = tx.Exec("DELETE FROM lnauth WHERE k1 = $1", query.K1); err != nil {
+			return bail(http.StatusInternalServerError, err.Error())
+		}
+
+		if err = tx.Commit(); err != nil {
+			return bail(http.StatusInternalServerError, err.Error())
+		}
+
+		return c.JSON(http.StatusOK, map[string]string{"status": "OK"})
+	}
+}
+
+func NostrAuth(sc context.Context, c echo.Context, action string) error {
+	return echo.NewHTTPError(http.StatusNotImplemented)
+}
+
+func HandleSessionCheck(sc context.Context) echo.HandlerFunc {
+	return func(c echo.Context) error {
+		var (
+			db     = sc.Db
+			ctx    = c.Request().Context()
+			cookie *http.Cookie
+			userId int
+			err    error
+		)
+
+		if cookie, err = c.Cookie("session"); err != nil {
+			return c.JSON(http.StatusUnauthorized, "no session cookie")
+		}
+
+		if err = db.QueryRowContext(ctx,
+			"SELECT user_id FROM sessions WHERE id = $1", cookie.Value).
+			Scan(&userId); err != nil {
+			return c.JSON(http.StatusNotFound, "session not found")
+		}
+
+		// HTMX can't follow 302 redirects with a Location header
+		// it requires a HX-Location header and 200 response instead
+		// see https://github.com/bigskysoftware/htmx/issues/2052
+		c.Response().Header().Set("HX-Location", "/")
+		return c.JSON(http.StatusOK, nil)
+	}
+}
+
+func mapAction(action string) string {
+	// LNURL spec uses "register" but we want to show "signup" to the user
+	// see https://github.com/lnurl/luds/blob/luds/04.md
+	switch action {
+	case "register":
+		return "signup"
+	default:
+		return action
+	}
+}
+
+func HandleLogout(sc context.Context) echo.HandlerFunc {
+	return func(c echo.Context) error {
+		var (
+			db        = sc.Db
+			ctx       = c.Request().Context()
+			cookie    *http.Cookie
+			sessionId string
+			err       error
+		)
+
+		if cookie, err = c.Cookie("session"); err != nil {
+			// cookie not found
+			return c.JSON(http.StatusNotFound, "session not found")
+		}
+
+		sessionId = cookie.Value
+		if _, err = db.ExecContext(ctx,
+			"DELETE FROM sessions WHERE id = $1", sessionId); err != nil {
+			return err
+		}
+
+		// tell browser that cookie is expired and thus can be deleted
+		c.SetCookie(&http.Cookie{Name: "session", HttpOnly: true, Path: "/", Value: sessionId, Secure: true, Expires: time.Now()})
+
+		return c.Redirect(http.StatusSeeOther, "/")
+		// c.Response().Header().Set("HX-Location", "/")
+		// return c.JSON(http.StatusOK, nil)
+	}
+}

server/router/handler/index.go

@@ -1,41 +1,46 @@
 package handler
 
 import (
-	"net/http"
+	"database/sql"
 
-	"git.ekzyis.com/ekzyis/delphi.market/db"
 	"git.ekzyis.com/ekzyis/delphi.market/server/router/context"
+	"git.ekzyis.com/ekzyis/delphi.market/server/router/pages"
+	"git.ekzyis.com/ekzyis/delphi.market/types"
 	"github.com/labstack/echo/v4"
 )
 
-func HandleIndex(sc context.ServerContext) echo.HandlerFunc {
+func HandleIndex(sc context.Context) echo.HandlerFunc {
 	return func(c echo.Context) error {
 		var (
-			markets []db.Market
+			db      = sc.Db
+			ctx     = c.Request().Context()
+			rows    *sql.Rows
 			err     error
-			data    map[string]any
+			markets []types.Market
 		)
-		if err = sc.Db.FetchActiveMarkets(&markets); err != nil {
+
+		if rows, err = db.QueryContext(ctx, ""+
+			"SELECT m.id, m.question, m.description, m.created_at, m.end_date, "+
+			"u.id, u.name, u.created_at, u.ln_pubkey, u.nostr_pubkey, u.msats "+
+			"FROM markets m "+
+			"JOIN users u ON m.user_id = u.id "+
+			"JOIN invoices i ON m.invoice_id = i.id "+
+			"WHERE i.confirmed_at IS NOT NULL"); err != nil {
 			return err
 		}
-		data = map[string]any{
+
-			"session": c.Get("session"),
+		for rows.Next() {
-			"markets": markets,
+			var m types.Market
+			var u types.User
+			if err = rows.Scan(
+				&m.Id, &m.Question, &m.Description, &m.CreatedAt, &m.EndDate,
+				&u.Id, &u.Name, &u.CreatedAt, &u.LnPubkey, &u.NostrPubkey, &u.Msats); err != nil {
+				return err
+			}
+			m.User = u
+			markets = append(markets, m)
 		}
 
-		return sc.Render(c, http.StatusOK, "index.html", data)
+		return pages.Index(markets).Render(context.RenderContext(sc, c), c.Response().Writer)
-	}
-}
-
-func HandleMarkets(sc context.ServerContext) echo.HandlerFunc {
-	return func(c echo.Context) error {
-		var (
-			markets []db.Market
-			err     error
-		)
-		if err = sc.Db.FetchActiveMarkets(&markets); err != nil {
-			return err
-		}
-		return c.JSON(http.StatusOK, markets)
 	}
 }

server/router/handler/invoice.go

@@ -2,109 +2,68 @@ package handler
 
 import (
 	"database/sql"
+	"fmt"
 	"net/http"
+	"regexp"
 	"time"
 
-	"git.ekzyis.com/ekzyis/delphi.market/db"
-	"git.ekzyis.com/ekzyis/delphi.market/lib"
 	"git.ekzyis.com/ekzyis/delphi.market/server/router/context"
+	"git.ekzyis.com/ekzyis/delphi.market/server/router/pages/components"
+	"git.ekzyis.com/ekzyis/delphi.market/types"
+	"github.com/a-h/templ"
 	"github.com/labstack/echo/v4"
-	"github.com/lightningnetwork/lnd/lntypes"
 )
 
-func HandleInvoiceStatus(sc context.ServerContext) echo.HandlerFunc {
+func HandleInvoice(sc context.Context) echo.HandlerFunc {
 	return func(c echo.Context) error {
 		var (
-			invoiceId string
+			db          = sc.Db
-			invoice   db.Invoice
+			ctx         = c.Request().Context()
-			u         db.User
+			hash        = c.Param("hash")
-			qr        string
+			u           = c.Get("session").(types.User)
-			err       error
+			inv         = types.Invoice{}
+			expiresIn   int
+			paid        bool
+			redirectUrl templ.SafeURL
+			qr          templ.Component
+			err         error
 		)
-		invoiceId = c.Param("id")
+
-		if err = sc.Db.FetchInvoice(&db.FetchInvoiceWhere{Id: invoiceId}, &invoice); err == sql.ErrNoRows {
+		if err = db.QueryRowContext(ctx, ""+
+			"SELECT user_id, msats, COALESCE(msats_received, 0), expires_at, confirmed_at, bolt11, COALESCE(description, '') "+
+			"FROM invoices "+
+			"WHERE hash = $1", hash).
+			Scan(&inv.UserId, &inv.Msats, &inv.MsatsReceived, &inv.ExpiresAt, &inv.ConfirmedAt, &inv.Bolt11, &inv.Description); err != nil {
+			if err == sql.ErrNoRows {
+				return echo.NewHTTPError(http.StatusNotFound)
+			}
+			c.Logger().Error(err)
+			return echo.NewHTTPError(http.StatusInternalServerError)
+		}
+
+		if u.Id != inv.UserId {
 			return echo.NewHTTPError(http.StatusNotFound)
-		} else if err != nil {
-			return err
 		}
-		if u = c.Get("session").(db.User); invoice.Pubkey != u.Pubkey {
+
-			return echo.NewHTTPError(http.StatusUnauthorized)
+		expiresIn = int(time.Until(inv.ExpiresAt).Seconds())
-		}
+		paid = inv.MsatsReceived >= inv.Msats
-		if qr, err = lib.ToQR(invoice.PaymentRequest); err != nil {
+		redirectUrl = toRedirectUrl(inv.Description)
-			return err
+
-		}
+		qr = components.Invoice(hash, inv.Bolt11, int(inv.Msats), expiresIn, paid, redirectUrl)
-		invoice.Preimage = ""
+
-		data := map[string]any{
+		return components.Modal(qr).Render(context.RenderContext(sc, c), c.Response().Writer)
-			"Id":             invoice.Id,
-			"Msats":          invoice.Msats,
-			"MsatsReceived":  invoice.MsatsReceived,
-			"Hash":           invoice.Hash,
-			"PaymentRequest": invoice.PaymentRequest,
-			"CreatedAt":      invoice.CreatedAt,
-			"ExpiresAt":      invoice.ExpiresAt,
-			"ConfirmedAt":    invoice.ConfirmedAt,
-			"HeldSince":      invoice.HeldSince,
-			"Description":    invoice.Description,
-			"Qr":             qr,
-		}
-		return c.JSON(http.StatusOK, data)
 	}
 }
 
-func HandleInvoice(sc context.ServerContext) echo.HandlerFunc {
+var (
-	return func(c echo.Context) error {
+	marketRegexp = regexp.MustCompile("^create market (?P<id>[0-9]+)$")
-		var (
+)
-			invoiceId string
-			invoice   db.Invoice
-			u         db.User
-			hash      lntypes.Hash
-			qr        string
-			status    string
-			err       error
-		)
-		invoiceId = c.Param("id")
-		if err = sc.Db.FetchInvoice(&db.FetchInvoiceWhere{Id: invoiceId}, &invoice); err == sql.ErrNoRows {
-			return echo.NewHTTPError(http.StatusNotFound)
-		} else if err != nil {
-			return err
-		}
-		if u = c.Get("session").(db.User); invoice.Pubkey != u.Pubkey {
-			return echo.NewHTTPError(http.StatusUnauthorized)
-		}
-		if hash, err = lntypes.MakeHashFromStr(invoice.Hash); err != nil {
-			return err
-		}
-		go sc.Lnd.CheckInvoice(sc.Db, hash)
-		if qr, err = lib.ToQR(invoice.PaymentRequest); err != nil {
-			return err
-		}
-		if invoice.ConfirmedAt.Valid {
-			status = "Paid"
-		} else if time.Now().After(invoice.ExpiresAt) {
-			status = "Expired"
-		}
-		data := map[string]any{
-			"session": c.Get("session"),
-			"invoice": invoice,
-			"status":  status,
-			"lnurl":   invoice.PaymentRequest,
-			"qr":      qr,
-		}
-		return sc.Render(c, http.StatusOK, "invoice.html", data)
-	}
-}
 
-func HandleInvoices(sc context.ServerContext) echo.HandlerFunc {
+func toRedirectUrl(description string) templ.SafeURL {
-	return func(c echo.Context) error {
+	var m []string
-		var (
+	if m = marketRegexp.FindStringSubmatch(description); m != nil {
-			u        db.User
+		marketId := m[marketRegexp.SubexpIndex("id")]
-			invoices []db.Invoice
+		return templ.SafeURL(fmt.Sprintf("/market/%s", marketId))
-			err      error
-		)
-		u = c.Get("session").(db.User)
-		if err = sc.Db.FetchUserInvoices(u.Pubkey, &invoices); err != nil {
-			return err
-		}
-		return c.JSON(http.StatusOK, invoices)
 	}
+	return "/"
 }

server/router/handler/lnauth_test.go

@@ -0,0 +1,304 @@
+package handler_test
+
+import (
+	"encoding/hex"
+	"fmt"
+	"net/http"
+	"net/http/httptest"
+	"testing"
+
+	"git.ekzyis.com/ekzyis/delphi.market/server/auth"
+	"git.ekzyis.com/ekzyis/delphi.market/server/router/context"
+	"git.ekzyis.com/ekzyis/delphi.market/server/router/handler"
+	"git.ekzyis.com/ekzyis/delphi.market/test"
+	"github.com/decred/dcrd/dcrec/secp256k1/v4"
+	"github.com/labstack/echo/v4"
+	"github.com/stretchr/testify/assert"
+)
+
+func init() {
+	test.Init(&db)
+}
+
+func TestLnAuthSignup(t *testing.T) {
+	var (
+		assert      = assert.New(t)
+		sc          = context.Context{Db: db}
+		e           *echo.Echo
+		c           echo.Context
+		req         *http.Request
+		rec         *httptest.ResponseRecorder
+		cookies     []*http.Cookie
+		sessionId   string
+		dbSessionId string
+		err         error
+	)
+
+	e, req, rec = test.HTTPMocks("GET", "/signup/lightning", nil)
+	c = e.NewContext(req, rec)
+	c.SetParamNames("method")
+	c.SetParamValues("lightning")
+
+	handler.HandleAuth(sc, "register")(c)
+	assert.Equal(http.StatusOK, rec.Code, "wrong status code")
+
+	// Set-Cookie header present
+	cookies = rec.Result().Cookies()
+	assert.Equal(1, len(cookies), "wrong number of Set-Cookie headers")
+	assert.Equal("session", cookies[0].Name, "wrong cookie name")
+
+	// new challenge inserted which matches cookie value
+	sessionId = cookies[0].Value
+	err = db.QueryRow("SELECT session_id FROM lnauth WHERE session_id = $1", sessionId).Scan(&dbSessionId)
+	assert.NoError(err)
+	assert.Equal(sessionId, dbSessionId, "wrong session id")
+}
+
+func TestLnAuthSignupCallbackUserNotExists(t *testing.T) {
+	var (
+		assert    = assert.New(t)
+		e         *echo.Echo
+		c         echo.Context
+		sc        context.Context
+		req       *http.Request
+		rec       *httptest.ResponseRecorder
+		lnAuth    *auth.LnAuth
+		sk        *secp256k1.PrivateKey
+		pk        *secp256k1.PublicKey
+		sig       string
+		key       string
+		sessionId string
+		userId    int
+		count     int
+		err       error
+	)
+
+	lnAuth, err = auth.NewLnAuth("register")
+	assert.NoErrorf(err, "error creating challenge")
+
+	err = db.QueryRow(
+		"INSERT INTO lnauth(k1, lnurl) VALUES($1, $2) RETURNING session_id",
+		lnAuth.K1, lnAuth.LNURL).Scan(&sessionId)
+	assert.NoError(err, "error creating challenge")
+
+	sk, pk, err = test.GenerateKeyPair()
+	assert.NoError(err, "error generating keypair")
+
+	sig, err = test.Sign(sk, lnAuth.K1)
+	assert.NoError(err, "error signing k1")
+
+	key = hex.EncodeToString(pk.SerializeCompressed())
+
+	sc = context.Context{Db: db}
+	e, req, rec = test.HTTPMocks(
+		"GET",
+		fmt.Sprintf("/api/lnauth?tag=login&k1=%s&key=%s&sig=%s&action=%s", lnAuth.K1, key, sig, "register"),
+		nil)
+	c = e.NewContext(req, rec)
+
+	handler.HandleLnAuthCallback(sc)(c)
+	assert.Equal(http.StatusOK, rec.Code, "wrong status code")
+
+	// user created
+	err = db.QueryRow("SELECT id FROM users WHERE ln_pubkey = $1", key).Scan(&userId)
+	assert.NoError(err, "error fetching user")
+
+	// session created
+	err = db.QueryRow("SELECT COUNT(1) FROM sessions WHERE id = $1 AND user_id = $2", sessionId, userId).Scan(&count)
+	assert.NoError(err, "error fetching session")
+	assert.Equal(1, count, "invalid session count")
+
+	// challenge deleted
+	err = db.QueryRow("SELECT COUNT(1) FROM lnauth WHERE k1 = $1", lnAuth.K1).Scan(&count)
+	assert.NoError(err, "error fetching challenge")
+	assert.Equal(count, 0, "challenge not deleted")
+}
+
+func TestLnAuthSignupCallbackUserExists(t *testing.T) {
+	var (
+		assert    = assert.New(t)
+		e         *echo.Echo
+		c         echo.Context
+		sc        context.Context
+		req       *http.Request
+		rec       *httptest.ResponseRecorder
+		lnAuth    *auth.LnAuth
+		sk        *secp256k1.PrivateKey
+		pk        *secp256k1.PublicKey
+		sig       string
+		key       string
+		sessionId string
+		err       error
+	)
+
+	lnAuth, err = auth.NewLnAuth("register")
+	assert.NoErrorf(err, "error creating challenge")
+
+	err = db.QueryRow(
+		"INSERT INTO lnauth(k1, lnurl) VALUES($1, $2) RETURNING session_id",
+		lnAuth.K1, lnAuth.LNURL).Scan(&sessionId)
+	assert.NoError(err, "error creating challenge")
+
+	sk, pk, err = test.GenerateKeyPair()
+	assert.NoError(err, "error generating keypair")
+
+	sig, err = test.Sign(sk, lnAuth.K1)
+	assert.NoError(err, "error signing k1")
+
+	key = hex.EncodeToString(pk.SerializeCompressed())
+
+	// create user before signup
+	_, err = db.Exec("INSERT INTO users(ln_pubkey) VALUES($1) RETURNING id", key)
+	assert.NoError(err, "error creating user")
+
+	sc = context.Context{Db: db}
+	e, req, rec = test.HTTPMocks(
+		"GET",
+		fmt.Sprintf("/api/lnauth?tag=login&k1=%s&key=%s&sig=%s&action=%s", lnAuth.K1, key, sig, "register"),
+		nil)
+	c = e.NewContext(req, rec)
+
+	// does not throw an error for UX reasons
+	handler.HandleLnAuthCallback(sc)(c)
+	assert.Equal(http.StatusOK, rec.Code, "wrong status code")
+}
+
+func TestLnAuthLogin(t *testing.T) {
+	var (
+		assert      = assert.New(t)
+		sc          = context.Context{Db: db}
+		e           *echo.Echo
+		c           echo.Context
+		req         *http.Request
+		rec         *httptest.ResponseRecorder
+		cookies     []*http.Cookie
+		sessionId   string
+		dbSessionId string
+		err         error
+	)
+
+	e, req, rec = test.HTTPMocks("GET", "/login/lightning", nil)
+	c = e.NewContext(req, rec)
+	c.SetParamNames("method")
+	c.SetParamValues("lightning")
+
+	err = handler.HandleAuth(sc, "login")(c)
+	assert.NoError(err, "handler returned error")
+
+	// Set-Cookie header present
+	cookies = rec.Result().Cookies()
+	assert.Equal(len(cookies), 1, "wrong number of Set-Cookie headers")
+	assert.Equal("session", cookies[0].Name, "wrong cookie name")
+
+	// new challenge inserted which matches cookie value
+	sessionId = cookies[0].Value
+	err = db.QueryRow("SELECT session_id FROM lnauth WHERE session_id = $1", sessionId).Scan(&dbSessionId)
+	assert.NoError(err)
+	assert.Equal(sessionId, dbSessionId, "wrong session id")
+}
+
+func TestLnAuthLoginCallbackUserNotExists(t *testing.T) {
+	var (
+		assert    = assert.New(t)
+		e         *echo.Echo
+		c         echo.Context
+		sc        context.Context
+		req       *http.Request
+		rec       *httptest.ResponseRecorder
+		lnAuth    *auth.LnAuth
+		sk        *secp256k1.PrivateKey
+		pk        *secp256k1.PublicKey
+		sig       string
+		key       string
+		sessionId string
+		err       error
+	)
+
+	lnAuth, err = auth.NewLnAuth("login")
+	assert.NoErrorf(err, "error creating challenge")
+
+	err = db.QueryRow(
+		"INSERT INTO lnauth(k1, lnurl) VALUES($1, $2) RETURNING session_id",
+		lnAuth.K1, lnAuth.LNURL).Scan(&sessionId)
+	assert.NoError(err, "error creating challenge")
+
+	sk, pk, err = test.GenerateKeyPair()
+	assert.NoError(err, "error generating keypair")
+
+	sig, err = test.Sign(sk, lnAuth.K1)
+	assert.NoError(err, "error signing k1")
+
+	key = hex.EncodeToString(pk.SerializeCompressed())
+
+	sc = context.Context{Db: db}
+	e, req, rec = test.HTTPMocks(
+		"GET",
+		fmt.Sprintf("/api/lnauth?tag=login&k1=%s&key=%s&sig=%s&action=%s", lnAuth.K1, key, sig, "login"),
+		nil)
+	c = e.NewContext(req, rec)
+
+	// must throw error because user does not exist
+	handler.HandleLnAuthCallback(sc)(c)
+	assert.Equal(http.StatusNotFound, rec.Code, "wrong status code")
+	assert.Contains(rec.Body.String(), "\"reason\":\"user not found\"", "user check failed")
+}
+
+func TestLnAuthLoginCallbackUserExists(t *testing.T) {
+	var (
+		assert    = assert.New(t)
+		e         *echo.Echo
+		c         echo.Context
+		sc        context.Context
+		req       *http.Request
+		rec       *httptest.ResponseRecorder
+		lnAuth    *auth.LnAuth
+		sk        *secp256k1.PrivateKey
+		pk        *secp256k1.PublicKey
+		sig       string
+		key       string
+		sessionId string
+		userId    int
+		count     int
+		err       error
+	)
+
+	lnAuth, err = auth.NewLnAuth("login")
+	assert.NoErrorf(err, "error creating challenge")
+
+	err = db.QueryRow(
+		"INSERT INTO lnauth(k1, lnurl) VALUES($1, $2) RETURNING session_id",
+		lnAuth.K1, lnAuth.LNURL).Scan(&sessionId)
+	assert.NoError(err, "error creating challenge")
+
+	sk, pk, err = test.GenerateKeyPair()
+	assert.NoError(err, "error generating keypair")
+
+	sig, err = test.Sign(sk, lnAuth.K1)
+	assert.NoError(err, "error signing k1")
+
+	key = hex.EncodeToString(pk.SerializeCompressed())
+
+	// create user such that login does not fail
+	err = db.QueryRow("INSERT INTO users(ln_pubkey) VALUES($1) RETURNING id", key).Scan(&userId)
+	assert.NoError(err, "error creating user")
+
+	sc = context.Context{Db: db}
+	e, req, rec = test.HTTPMocks(
+		"GET",
+		fmt.Sprintf("/api/lnauth?tag=login&k1=%s&key=%s&sig=%s&action=%s", lnAuth.K1, key, sig, "login"),
+		nil)
+	c = e.NewContext(req, rec)
+
+	handler.HandleLnAuthCallback(sc)(c)
+	assert.Equal(http.StatusOK, rec.Code, "wrong status code")
+
+	// session created
+	err = db.QueryRow("SELECT COUNT(1) FROM sessions WHERE id = $1 AND user_id = $2", sessionId, userId).Scan(&count)
+	assert.NoError(err, "error fetching session")
+	assert.Equal(1, count, "invalid session count")
+
+	// challenge deleted
+	err = db.QueryRow("SELECT COUNT(1) FROM lnauth WHERE k1 = $1", lnAuth.K1).Scan(&count)
+	assert.NoError(err, "error fetching challenge")
+	assert.Equal(count, 0, "challenge not deleted")
+}

server/router/handler/login.go

@@ -1,75 +0,0 @@
-package handler
-
-import (
-	"database/sql"
-	"net/http"
-	"time"
-
-	"git.ekzyis.com/ekzyis/delphi.market/db"
-	"git.ekzyis.com/ekzyis/delphi.market/lib"
-	"git.ekzyis.com/ekzyis/delphi.market/server/auth"
-	"git.ekzyis.com/ekzyis/delphi.market/server/router/context"
-	"github.com/labstack/echo/v4"
-)
-
-func HandleLogin(sc context.ServerContext) echo.HandlerFunc {
-	return func(c echo.Context) error {
-		var (
-			lnAuth   *auth.LNAuth
-			dbLnAuth db.LNAuth
-			err      error
-			expires  time.Time = time.Now().Add(60 * 60 * 24 * 365 * time.Second)
-			qr       string
-			data     map[string]any
-		)
-		if lnAuth, err = auth.NewLNAuth(); err != nil {
-			return err
-		}
-		dbLnAuth = db.LNAuth{K1: lnAuth.K1, LNURL: lnAuth.LNURL}
-		if err = sc.Db.CreateLNAuth(&dbLnAuth); err != nil {
-			return err
-		}
-		c.SetCookie(&http.Cookie{Name: "session", HttpOnly: true, Path: "/", Value: dbLnAuth.SessionId, Secure: true, Expires: expires})
-		if qr, err = lib.ToQR(lnAuth.LNURL); err != nil {
-			return err
-		}
-		data = map[string]any{
-			"lnurl": lnAuth.LNURL,
-			"qr":    qr,
-		}
-		return c.JSON(http.StatusOK, data)
-	}
-}
-
-func HandleLoginCallback(sc context.ServerContext) echo.HandlerFunc {
-	return func(c echo.Context) error {
-		var (
-			query     auth.LNAuthResponse
-			sessionId string
-			err       error
-		)
-		if err := c.Bind(&query); err != nil {
-			return echo.NewHTTPError(http.StatusBadRequest)
-		}
-		if err = sc.Db.FetchSessionId(query.K1, &sessionId); err == sql.ErrNoRows {
-			return echo.NewHTTPError(http.StatusNotFound, map[string]string{"reason": "session not found"})
-		} else if err != nil {
-			return err
-		}
-		if ok, err := auth.VerifyLNAuth(&query); err != nil {
-			return err
-		} else if !ok {
-			return echo.NewHTTPError(http.StatusBadRequest, map[string]string{"reason": "bad signature"})
-		}
-		if err = sc.Db.CreateUser(&db.User{Pubkey: query.Key}); err != nil {
-			return err
-		}
-		if err = sc.Db.CreateSession(&db.Session{Pubkey: query.Key, SessionId: sessionId}); err != nil {
-			return err
-		}
-		if err = sc.Db.DeleteLNAuth(&db.LNAuth{K1: query.K1}); err != nil {
-			return err
-		}
-		return c.JSON(http.StatusOK, map[string]string{"status": "OK"})
-	}
-}

server/router/handler/login_test.go

@@ -1,123 +0,0 @@
-package handler_test
-
-import (
-	"database/sql"
-	"encoding/hex"
-	"fmt"
-	"net/http"
-	"net/http/httptest"
-	"testing"
-
-	db_ "git.ekzyis.com/ekzyis/delphi.market/db"
-	"git.ekzyis.com/ekzyis/delphi.market/server/auth"
-	"git.ekzyis.com/ekzyis/delphi.market/server/router/context"
-	"git.ekzyis.com/ekzyis/delphi.market/server/router/handler"
-	"git.ekzyis.com/ekzyis/delphi.market/test"
-	"github.com/decred/dcrd/dcrec/secp256k1/v4"
-	"github.com/labstack/echo/v4"
-	"github.com/stretchr/testify/assert"
-)
-
-func init() {
-	test.Init(&db)
-}
-
-func TestLogin(t *testing.T) {
-	var (
-		assert      = assert.New(t)
-		e           *echo.Echo
-		c           echo.Context
-		sc          context.ServerContext
-		req         *http.Request
-		rec         *httptest.ResponseRecorder
-		cookies     []*http.Cookie
-		sessionId   string
-		dbSessionId string
-		err         error
-	)
-	sc = context.ServerContext{Db: db}
-	e, req, rec = test.HTTPMocks("GET", "/login", nil)
-	c = e.NewContext(req, rec)
-
-	err = handler.HandleLogin(sc)(c)
-	assert.NoErrorf(err, "handler returned error")
-
-	// Set-Cookie header present
-	cookies = rec.Result().Cookies()
-	assert.Equalf(len(cookies), 1, "wrong number of Set-Cookie headers")
-	assert.Equalf(cookies[0].Name, "session", "wrong cookie name")
-
-	// new challenge inserted
-	sessionId = cookies[0].Value
-	err = db.QueryRow("SELECT session_id FROM lnauth WHERE session_id = $1", sessionId).Scan(&dbSessionId)
-	if !assert.NoError(err) {
-		return
-	}
-
-	// inserted challenge matches cookie value
-	assert.Equalf(sessionId, dbSessionId, "wrong session id")
-}
-
-func TestLoginCallback(t *testing.T) {
-	var (
-		assert   = assert.New(t)
-		e        *echo.Echo
-		c        echo.Context
-		sc       context.ServerContext
-		req      *http.Request
-		rec      *httptest.ResponseRecorder
-		sk       *secp256k1.PrivateKey
-		pk       *secp256k1.PublicKey
-		lnAuth   *auth.LNAuth
-		dbLnAuth *db_.LNAuth
-		u        *db_.User
-		s        *db_.Session
-		key      string
-		sig      string
-		err      error
-	)
-	lnAuth, err = auth.NewLNAuth()
-	if !assert.NoErrorf(err, "error creating challenge") {
-		return
-	}
-	dbLnAuth = &db_.LNAuth{K1: lnAuth.K1, LNURL: lnAuth.LNURL}
-	err = db.CreateLNAuth(dbLnAuth)
-	if !assert.NoErrorf(err, "error inserting challenge") {
-		return
-	}
-
-	sk, pk, err = test.GenerateKeyPair()
-	if !assert.NoErrorf(err, "error generating keypair") {
-		return
-	}
-	sig, err = test.Sign(sk, lnAuth.K1)
-	if !assert.NoErrorf(err, "error signing k1") {
-		return
-	}
-	key = hex.EncodeToString(pk.SerializeCompressed())
-
-	sc = context.ServerContext{Db: db}
-	e, req, rec = test.HTTPMocks("GET", fmt.Sprintf("/api/login?k1=%s&key=%s&sig=%s", lnAuth.K1, key, sig), nil)
-	c = e.NewContext(req, rec)
-
-	err = handler.HandleLoginCallback(sc)(c)
-	assert.NoErrorf(err, "handler returned error")
-
-	// user created
-	u = new(db_.User)
-	err = db.FetchUser(key, u)
-	if assert.NoErrorf(err, "error fetching user") {
-		assert.Equalf(u.Pubkey, key, "pubkeys do not match")
-	}
-
-	// session created
-	s = &db_.Session{SessionId: dbLnAuth.SessionId}
-	err = db.FetchSession(s)
-	if assert.NoErrorf(err, "error fetching session") {
-		assert.Equalf(s.Pubkey, u.Pubkey, "session pubkey does not match user pubkey")
-	}
-
-	// challenge deleted
-	err = db.FetchSessionId(u.Pubkey, &dbLnAuth.SessionId)
-	assert.ErrorIs(err, sql.ErrNoRows, "challenge not deleted")
-}

server/router/handler/logout.go

@@ -1,31 +0,0 @@
-package handler
-
-import (
-	"net/http"
-	"time"
-
-	"git.ekzyis.com/ekzyis/delphi.market/db"
-	"git.ekzyis.com/ekzyis/delphi.market/server/router/context"
-	"github.com/labstack/echo/v4"
-)
-
-func HandleLogout(sc context.ServerContext) echo.HandlerFunc {
-	return func(c echo.Context) error {
-		var (
-			cookie    *http.Cookie
-			sessionId string
-			err       error
-		)
-		if cookie, err = c.Cookie("session"); err != nil {
-			// cookie not found
-			return c.JSON(http.StatusNotFound, map[string]string{"reason": "session not found"})
-		}
-		sessionId = cookie.Value
-		if err = sc.Db.DeleteSession(&db.Session{SessionId: sessionId}); err != nil {
-			return err
-		}
-		// tell browser that cookie is expired and thus can be deleted
-		c.SetCookie(&http.Cookie{Name: "session", HttpOnly: true, Path: "/", Value: sessionId, Secure: true, Expires: time.Now()})
-		return c.JSON(http.StatusSeeOther, map[string]string{"status": "OK"})
-	}
-}

server/router/handler/logout_test.go

@@ -1,20 +1,9 @@
 package handler_test
 
 import (
-	"database/sql"
-	"encoding/hex"
-	"fmt"
-	"net/http"
-	"net/http/httptest"
 	"testing"
 
-	db_ "git.ekzyis.com/ekzyis/delphi.market/db"
-	"git.ekzyis.com/ekzyis/delphi.market/server/router/context"
-	"git.ekzyis.com/ekzyis/delphi.market/server/router/handler"
 	"git.ekzyis.com/ekzyis/delphi.market/test"
-	"github.com/decred/dcrd/dcrec/secp256k1/v4"
-	"github.com/labstack/echo/v4"
-	"github.com/stretchr/testify/assert"
 )
 
 func init() {
@@ -22,51 +11,5 @@ func init() {
 }
 
 func TestLogout(t *testing.T) {
-	var (
+	t.Skip()
-		assert = assert.New(t)
-		e      *echo.Echo
-		c      echo.Context
-		sc     context.ServerContext
-		req    *http.Request
-		rec    *httptest.ResponseRecorder
-		pk     *secp256k1.PublicKey
-		s      *db_.Session
-		key    string
-		err    error
-	)
-	sc = context.ServerContext{Db: db}
-	e, req, rec = test.HTTPMocks("POST", "/logout", nil)
-
-	_, pk, err = test.GenerateKeyPair()
-	if !assert.NoErrorf(err, "error generating keypair") {
-		return
-	}
-	key = hex.EncodeToString(pk.SerializeCompressed())
-	err = sc.Db.CreateUser(&db_.User{Pubkey: key})
-	if !assert.NoErrorf(err, "error creating user") {
-		return
-	}
-	s = &db_.Session{Pubkey: key}
-	err = sc.Db.QueryRow("SELECT encode(gen_random_uuid()::text::bytea, 'base64')").Scan(&s.SessionId)
-	if !assert.NoErrorf(err, "error creating session id") {
-		return
-	}
-
-	// create session
-	err = sc.Db.CreateSession(s)
-	if !assert.NoErrorf(err, "error creating session") {
-		return
-	}
-
-	// session authentication via cookie
-	req.Header.Add("cookie", fmt.Sprintf("session=%s", s.SessionId))
-
-	c = e.NewContext(req, rec)
-	err = handler.HandleLogout(sc)(c)
-	assert.NoErrorf(err, "handler returned error")
-
-	// session must have been deleted
-	err = sc.Db.FetchSession(s)
-	assert.ErrorIsf(err, sql.ErrNoRows, "session not deleted")
-
 }

server/router/handler/market.go

@@ -1,475 +1,117 @@
 package handler
 
 import (
-	context_ "context"
 	"database/sql"
 	"fmt"
 	"net/http"
-	"strconv"
-	"strings"
 	"time"
 
-	"git.ekzyis.com/ekzyis/delphi.market/db"
-	"git.ekzyis.com/ekzyis/delphi.market/lib"
 	"git.ekzyis.com/ekzyis/delphi.market/server/router/context"
+	"git.ekzyis.com/ekzyis/delphi.market/server/router/pages"
+	"git.ekzyis.com/ekzyis/delphi.market/server/router/pages/components"
+	"git.ekzyis.com/ekzyis/delphi.market/types"
+	"github.com/a-h/templ"
 	"github.com/labstack/echo/v4"
+	"github.com/lightningnetwork/lnd/lnrpc/invoicesrpc"
 	"github.com/lightningnetwork/lnd/lntypes"
+	"github.com/lightningnetwork/lnd/lnwire"
 )
 
-func HandleMarket(sc context.ServerContext) echo.HandlerFunc {
+func HandleCreate(sc context.Context) echo.HandlerFunc {
-	return func(c echo.Context) error {
-		var (
-			marketId int64
-			market   db.Market
-			shares   []db.Share
-			orders   []db.Order
-			err      error
-			data     map[string]any
-			u        db.User
-			tx       *sql.Tx
-		)
-		if marketId, err = strconv.ParseInt(c.Param("id"), 10, 64); err != nil {
-			return echo.NewHTTPError(http.StatusBadRequest, "Bad Request")
-		}
-		if err = sc.Db.FetchMarket(int(marketId), &market); err == sql.ErrNoRows {
-			return echo.NewHTTPError(http.StatusNotFound, "Not Found")
-		} else if err != nil {
-			return err
-		}
-		if err = sc.Db.FetchShares(market.Id, &shares); err != nil {
-			return err
-		}
-		if err = sc.Db.FetchOrders(&db.FetchOrdersWhere{MarketId: market.Id, Confirmed: true}, &orders); err != nil {
-			return err
-		}
-		data = map[string]any{
-			"Id":          market.Id,
-			"Pubkey":      market.Pubkey,
-			"Description": market.Description,
-			"SettledAt":   market.SettledAt,
-			"Shares":      shares,
-		}
-		if session := c.Get("session"); session != nil {
-			u = session.(db.User)
-			ctx, cancel := context_.WithTimeout(context_.TODO(), 10*time.Second)
-			defer cancel()
-			if tx, err = sc.Db.BeginTx(ctx, nil); err != nil {
-				return err
-			}
-			defer tx.Commit()
-			uBalance := make(map[string]any)
-			if err = sc.Db.FetchUserBalance(tx, ctx, int(marketId), u.Pubkey, &uBalance); err != nil {
-				tx.Rollback()
-				return err
-			}
-			lib.Merge(&data, &map[string]any{"user": uBalance})
-		}
-		return c.JSON(http.StatusOK, data)
-	}
-}
-
-func HandleCreateMarket(sc context.ServerContext) echo.HandlerFunc {
 	return func(c echo.Context) error {
 		var (
+			db             = sc.Db
+			lnd            = sc.Lnd
 			tx             *sql.Tx
-			u              db.User
+			ctx            = c.Request().Context()
-			m              db.Market
+			u              = c.Get("session").(types.User)
-			invoice        *db.Invoice
+			question       = c.FormValue("question")
-			msats          int64
+			description    = c.FormValue("description")
-			invDescription string
+			endDate        = c.FormValue("end_date")
-			data           map[string]any
-			qr             string
 			hash           lntypes.Hash
+			paymentRequest string
+			cost           = lnwire.MilliSatoshi(1000e3)
+			expiry         = int64(600)
+			expiresAt      = time.Now().Add(time.Second * time.Duration(expiry))
+			invoiceId      int
+			marketId       int
+			invDescription string
+			qr             templ.Component
 			err            error
 		)
-		if err := c.Bind(&m); err != nil {
+		// TODO: validation
-			return echo.NewHTTPError(http.StatusBadRequest)
-		}
 
-		// transaction start
+		if tx, err = db.BeginTx(ctx, &sql.TxOptions{Isolation: sql.LevelReadCommitted}); err != nil {
-		ctx, cancel := context_.WithTimeout(c.Request().Context(), 5*time.Second)
-		defer cancel()
-		if tx, err = sc.Db.BeginTx(ctx, nil); err != nil {
-			return err
-		}
-		defer tx.Commit()
-
-		u = c.Get("session").(db.User)
-		m.Pubkey = u.Pubkey
-		msats = 1000
-		// TODO: add [market:<id>] for redirect after payment
-		invDescription = fmt.Sprintf("create market \"%s\"", m.Description)
-		if invoice, err = sc.Lnd.CreateInvoice(tx, ctx, sc.Db, u.Pubkey, msats, invDescription); err != nil {
-			tx.Rollback()
-			return err
-		}
-		if qr, err = lib.ToQR(invoice.PaymentRequest); err != nil {
-			tx.Rollback()
-			return err
-		}
-		if hash, err = lntypes.MakeHashFromStr(invoice.Hash); err != nil {
-			tx.Rollback()
-			return err
-		}
-		m.InvoiceId = invoice.Id
-		if err := sc.Db.CreateMarket(tx, ctx, &m); err != nil {
-			tx.Rollback()
 			return err
 		}
 
-		// need to commit before starting to poll invoice status
+		if hash, paymentRequest, err = lnd.Client.AddInvoice(ctx,
-		tx.Commit()
+			&invoicesrpc.AddInvoiceData{
-		go sc.Lnd.CheckInvoice(sc.Db, hash)
+				Value:  cost,
-
+				Expiry: expiry,
-		data = map[string]any{
+			}); err != nil {
-			"id":     invoice.Id,
+			return err
-			"bolt11": invoice.PaymentRequest,
-			"amount": msats,
-			"qr":     qr,
 		}
-		return c.JSON(http.StatusPaymentRequired, data)
+
+		if err = tx.QueryRowContext(ctx, ""+
+			"INSERT INTO invoices (user_id, msats, hash, bolt11, expires_at) "+
+			"VALUES ($1, $2, $3, $4, $5) "+
+			"RETURNING id",
+			u.Id, cost, hash.String(), paymentRequest, expiresAt).Scan(&invoiceId); err != nil {
+			return err
+		}
+
+		if err = tx.QueryRowContext(ctx, ""+
+			"INSERT INTO markets (question, description, end_date, user_id, invoice_id) "+
+			"VALUES ($1, $2, $3, $4, $5) "+
+			"RETURNING id",
+			question, description, endDate, u.Id, invoiceId).Scan(&marketId); err != nil {
+			return err
+		}
+
+		invDescription = fmt.Sprintf("create market %d", marketId)
+		if _, err = tx.ExecContext(ctx, ""+
+			"UPDATE invoices SET description = $1 WHERE id = $2",
+			invDescription, invoiceId); err != nil {
+			return err
+		}
+
+		if err = tx.Commit(); err != nil {
+			return err
+		}
+
+		qr = components.Invoice(hash.String(), paymentRequest, int(cost), int(expiry), false, toRedirectUrl(invDescription))
+
+		return components.Modal(qr).Render(context.RenderContext(sc, c), c.Response().Writer)
 	}
 }
 
-func HandleMarketOrders(sc context.ServerContext) echo.HandlerFunc {
+func HandleMarket(sc context.Context) echo.HandlerFunc {
 	return func(c echo.Context) error {
 		var (
-			marketId int64
+			db  = sc.Db
-			orders   []db.Order
+			ctx = c.Request().Context()
-			err      error
+			id  = c.Param("id")
-		)
+			m   = types.Market{}
-		if marketId, err = strconv.ParseInt(c.Param("id"), 10, 64); err != nil {
+			u   = types.User{}
-			return echo.NewHTTPError(http.StatusBadRequest, "Bad Request")
+			err error
-		}
-		if err = sc.Db.FetchMarketOrders(marketId, &orders); err != nil {
-			return err
-		}
-		return c.JSON(http.StatusOK, orders)
-	}
-}
-
-func HandleOrder(sc context.ServerContext) echo.HandlerFunc {
-	return func(c echo.Context) error {
-		var (
-			tx          *sql.Tx
-			u           db.User
-			o           db.Order
-			s           db.Share
-			m           db.Market
-			invoice     *db.Invoice
-			msats       int64
-			description string
-			data        map[string]any
-			qr          string
-			hash        lntypes.Hash
-			err         error
-		)
-		if err := c.Bind(&o); err != nil {
-			return echo.NewHTTPError(http.StatusBadRequest)
-		}
-		u = c.Get("session").(db.User)
-		o.Pubkey = u.Pubkey
-		msats = o.Quantity * o.Price * 1000
-
-		// transaction start
-		ctx, cancel := context_.WithTimeout(c.Request().Context(), 5*time.Second)
-		defer cancel()
-		if tx, err = sc.Db.BeginTx(ctx, nil); err != nil {
-			return err
-		}
-		defer tx.Commit()
-
-		if err = sc.Db.FetchShare(tx, ctx, o.ShareId, &s); err != nil {
-			tx.Rollback()
-			return err
-		}
-
-		if err = sc.Db.FetchMarket(s.MarketId, &m); err == sql.ErrNoRows {
-			return c.JSON(http.StatusNotFound, nil)
-		} else if err != nil {
-			return err
-		}
-
-		if m.SettledAt.Valid {
-			return c.JSON(http.StatusBadRequest, map[string]string{"reason": "market already settled"})
-		}
-
-		description = fmt.Sprintf("%s %d %s shares @ %d sats [market:%d]", strings.ToUpper(o.Side), o.Quantity, s.Description, o.Price, s.MarketId)
-
-		if o.Side == "BUY" {
-			// BUY orders require payment
-			if invoice, err = sc.Lnd.CreateInvoice(tx, ctx, sc.Db, o.Pubkey, msats, description); err != nil {
-				tx.Rollback()
-				return err
-			}
-			// Create QR code to pay HODL invoice
-			if qr, err = lib.ToQR(invoice.PaymentRequest); err != nil {
-				tx.Rollback()
-				return err
-			}
-			if hash, err = lntypes.MakeHashFromStr(invoice.Hash); err != nil {
-				tx.Rollback()
-				return err
-			}
-
-			// Create (unconfirmed) order
-			o.InvoiceId.String = invoice.Id
-			if err := sc.Db.CreateOrder(tx, ctx, &o); err != nil {
-				tx.Rollback()
-				return err
-			}
-			// need to commit before starting to poll invoice status
-			tx.Commit()
-			go sc.Lnd.CheckInvoice(sc.Db, hash)
-
-			data = map[string]any{
-				"id":     invoice.Id,
-				"bolt11": invoice.PaymentRequest,
-				"amount": msats,
-				"qr":     qr,
-			}
-			return c.JSON(http.StatusPaymentRequired, data)
-		}
-
-		// sell order: check user balance
-		balance := make(map[string]any)
-		if err = sc.Db.FetchUserBalance(tx, ctx, s.MarketId, o.Pubkey, &balance); err != nil {
-			return err
-		}
-		if balance[s.Description].(int) < int(o.Quantity) {
-			tx.Rollback()
-			return c.JSON(http.StatusBadRequest, nil)
-		}
-		// SELL orders don't require payment by user
-		if err := sc.Db.CreateOrder(tx, ctx, &o); err != nil {
-			tx.Rollback()
-			return err
-		}
-		tx.Commit()
-		return c.JSON(http.StatusCreated, nil)
-	}
-}
-
-func HandleDeleteOrder(sc context.ServerContext) echo.HandlerFunc {
-	return func(c echo.Context) error {
-		var (
-			orderId string
-			tx      *sql.Tx
-			u       db.User
-			o       db.Order
-			msats   int64
-			err     error
 		)
 
-		if orderId = c.Param("id"); orderId == "" {
+		if err = db.QueryRowContext(ctx, ""+
-			return echo.NewHTTPError(http.StatusBadRequest)
+			"SELECT m.id, m.question, m.description, m.created_at, m.end_date, "+
-		}
+			"u.id, u.name, u.created_at, u.ln_pubkey, u.nostr_pubkey, msats "+
-		u = c.Get("session").(db.User)
+			"FROM markets m JOIN users u ON m.user_id = u.id "+
-
+			"WHERE m.id = $1", id).Scan(
-		// transaction start
+			&m.Id, &m.Question, &m.Description, &m.CreatedAt, &m.EndDate,
-		ctx, cancel := context_.WithTimeout(c.Request().Context(), 5*time.Second)
+			&u.Id, &u.Name, &u.CreatedAt, &u.LnPubkey, &u.NostrPubkey, &u.Msats); err != nil {
-		defer cancel()
+			if err == sql.ErrNoRows {
-		if tx, err = sc.Db.BeginTx(ctx, nil); err != nil {
+				return echo.NewHTTPError(http.StatusNotFound)
-			return err
-		}
-		defer tx.Commit()
-
-		if err = sc.Db.FetchOrder(tx, ctx, orderId, &o); err != nil {
-			tx.Rollback()
-			return err
-		}
-
-		if u.Pubkey != o.Pubkey {
-			// order does not belong to user
-			tx.Rollback()
-			return echo.NewHTTPError(http.StatusForbidden)
-		}
-
-		if o.OrderId.Valid {
-			// order already settled
-			tx.Rollback()
-			return echo.NewHTTPError(http.StatusBadRequest)
-		}
-
-		if o.DeletedAt.Valid {
-			// order already deleted
-			tx.Rollback()
-			return echo.NewHTTPError(http.StatusBadRequest)
-		}
-
-		if o.Invoice.ConfirmedAt.Valid {
-			// order already paid: we need to move paid sats to user balance before deleting the order
-			// TODO update order and session on client
-			msats = o.Invoice.MsatsReceived
-			if res, err := tx.ExecContext(ctx, "UPDATE users SET msats = msats + $1 WHERE pubkey = $2", msats, u.Pubkey); err != nil {
-				tx.Rollback()
-				return err
-			} else {
-				// make sure exactly one row was affected
-				if rowsAffected, err := res.RowsAffected(); err != nil {
-					tx.Rollback()
-					return err
-				} else if rowsAffected != 1 {
-					tx.Rollback()
-					return echo.NewHTTPError(http.StatusInternalServerError)
-				}
 			}
-		}
-
-		if _, err = tx.ExecContext(ctx, "UPDATE orders SET deleted_at = CURRENT_TIMESTAMP WHERE id = $1", o.Id); err != nil {
-			tx.Rollback()
 			return err
 		}
 
-		tx.Commit()
+		m.User = u
 
-		return c.JSON(http.StatusOK, nil)
+		return pages.Market(m).Render(context.RenderContext(sc, c), c.Response().Writer)
-	}
-}
-
-func HandleOrders(sc context.ServerContext) echo.HandlerFunc {
-	return func(c echo.Context) error {
-		var (
-			u      db.User
-			orders []db.Order
-			err    error
-		)
-		u = c.Get("session").(db.User)
-		if err = sc.Db.FetchUserOrders(u.Pubkey, &orders); err != nil {
-			return err
-		}
-		return c.JSON(http.StatusOK, orders)
-	}
-}
-
-func HandleMarketStats(sc context.ServerContext) echo.HandlerFunc {
-	return func(c echo.Context) error {
-		var (
-			marketId int64
-			stats    db.MarketStats
-			err      error
-		)
-		if marketId, err = strconv.ParseInt(c.Param("id"), 10, 64); err != nil {
-			return echo.NewHTTPError(http.StatusBadRequest, "Bad Request")
-		}
-		if err = sc.Db.FetchMarketStats(marketId, &stats); err != nil {
-			return err
-		}
-		return c.JSON(http.StatusOK, stats)
-	}
-}
-
-func HandleMarketSettlement(sc context.ServerContext) echo.HandlerFunc {
-	return func(c echo.Context) error {
-		var (
-			marketId int64
-			market   db.Market
-			s        db.Share
-			tx       *sql.Tx
-			u        db.User
-			query    string
-			err      error
-		)
-		if marketId, err = strconv.ParseInt(c.Param("id"), 10, 64); err != nil {
-			return c.JSON(http.StatusBadRequest, nil)
-		}
-
-		if err = c.Bind(&s); err != nil || s.Id == "" {
-			return c.JSON(http.StatusBadRequest, nil)
-		}
-
-		if err = sc.Db.FetchMarket(int(marketId), &market); err == sql.ErrNoRows {
-			return c.JSON(http.StatusNotFound, map[string]string{"reason": "market not found"})
-		} else if err != nil {
-			return err
-		}
-
-		u = c.Get("session").(db.User)
-
-		// only market owner can settle market
-		if market.Pubkey != u.Pubkey {
-			return c.JSON(http.StatusForbidden, map[string]string{"reason": "not your market"})
-		}
-
-		// market already settled?
-		if market.SettledAt.Valid {
-			return c.JSON(http.StatusBadRequest, map[string]string{"reason": "market already settled"})
-		}
-
-		// transaction start
-		ctx, cancel := context_.WithTimeout(c.Request().Context(), 10*time.Second)
-		defer cancel()
-		if tx, err = sc.Db.BeginTx(ctx, nil); err != nil {
-			return err
-		}
-		defer tx.Commit()
-
-		// refund users for pending BUY orders
-		query = "" +
-			"UPDATE users u SET msats = msats + pending_orders.msats_received FROM ( " +
-			"	SELECT o.pubkey, i.msats_received " +
-			"   FROM orders o " +
-			"	LEFT JOIN invoices i ON i.id = o.invoice_id " +
-			"	JOIN shares s ON s.id = o.share_id " +
-			"	WHERE s.market_id = $1 " +
-			// an order is pending if it wasn't canceled and wasn't matched yet
-			// (the o.side = 'BUY' shouldn't be necessary since i.msats_received will be NULL for SELL orders anyway
-			//  but added here for clarification anyway)
-			"	AND o.side = 'BUY' AND o.deleted_at IS NULL AND o.order_id IS NULL " +
-			") AS pending_orders WHERE pending_orders.pubkey = u.pubkey"
-		if _, err = tx.ExecContext(ctx, query, marketId); err != nil {
-			tx.Rollback()
-			return err
-		}
-
-		// now cancel pending orders
-		query = "" +
-			"UPDATE orders o SET deleted_at = CURRENT_TIMESTAMP WHERE id IN ( " +
-			// basically same subquery as above
-			"  SELECT o.id FROM orders o " +
-			"  JOIN shares s ON s.id = o.share_id " +
-			// again, orders are pending if they weren't canceled and weren't matched yet
-			"  WHERE s.market_id = $1 AND o.deleted_at IS NULL and o.order_id IS NULL " +
-			")"
-		if _, err = tx.ExecContext(ctx, query, marketId); err != nil {
-			tx.Rollback()
-			return err
-		}
-
-		// payout
-		query = "" +
-			// * 100 since winning shares expire at 100 sats per share
-			// * 1000 to convert sats to msats
-			"UPDATE users u SET msats = msats + (user_shares.quantity * 100 * 1000) " +
-			"FROM ( " +
-			"    SELECT o.pubkey, o.share_id, " +
-			"    SUM(CASE WHEN o.side = 'BUY' THEN o.quantity ELSE -o.quantity END) AS quantity " +
-			"    FROM orders o " +
-			"    LEFT JOIN invoices i ON i.id = o.invoice_id " +
-			"    JOIN shares s ON s.id = o.share_id " +
-			// only consider uncanceled orders for winning shares
-			"    WHERE s.market_id = $1 AND o.deleted_at IS NULL AND s.id = $2 " +
-			// BUY orders must be paid and be matched. SELL orders must simply not be canceled to be considered.
-			"    AND ( (o.side = 'BUY' AND i.confirmed_at IS NOT NULL AND o.order_id IS NOT NULL) OR o.side = 'SELL' ) " +
-			"    GROUP BY o.pubkey, o.share_id " +
-			") AS user_shares WHERE user_shares.pubkey = u.pubkey"
-		if _, err = tx.ExecContext(ctx, query, marketId, s.Id); err != nil {
-			tx.Rollback()
-			return err
-		}
-
-		if _, err = tx.ExecContext(ctx, "UPDATE markets SET settled_at = CURRENT_TIMESTAMP WHERE id = $1", marketId); err != nil {
-			tx.Rollback()
-			return err
-		}
-
-		if _, err = tx.ExecContext(ctx, "UPDATE shares SET win = (id = $1) WHERE market_id = $2", s.Id, marketId); err != nil {
-			tx.Rollback()
-			return err
-		}
-
-		tx.Commit()
-
-		return c.JSON(http.StatusOK, nil)
 	}
 }

server/router/handler/session.go

@@ -1,30 +0,0 @@
-package handler
-
-import (
-	"database/sql"
-	"net/http"
-
-	"git.ekzyis.com/ekzyis/delphi.market/db"
-	"git.ekzyis.com/ekzyis/delphi.market/server/router/context"
-	"github.com/labstack/echo/v4"
-)
-
-func HandleCheckSession(sc context.ServerContext) echo.HandlerFunc {
-	return func(c echo.Context) error {
-		var (
-			cookie *http.Cookie
-			s      db.Session
-			err    error
-		)
-		if cookie, err = c.Cookie("session"); err != nil {
-			return c.JSON(http.StatusBadRequest, map[string]string{"reason": "cookie required"})
-		}
-		s = db.Session{SessionId: cookie.Value}
-		if err = sc.Db.FetchSession(&s); err == sql.ErrNoRows {
-			return c.JSON(http.StatusBadRequest, map[string]string{"reason": "session not found"})
-		} else if err != nil {
-			return c.JSON(http.StatusInternalServerError, nil)
-		}
-		return c.JSON(http.StatusOK, map[string]any{"pubkey": s.Pubkey, "msats": s.Msats})
-	}
-}

server/router/handler/user.go

@@ -1,30 +1,15 @@
 package handler
 
 import (
-	"net/http"
-
-	"git.ekzyis.com/ekzyis/delphi.market/db"
 	"git.ekzyis.com/ekzyis/delphi.market/server/router/context"
+	"git.ekzyis.com/ekzyis/delphi.market/server/router/pages"
+	"git.ekzyis.com/ekzyis/delphi.market/types"
 	"github.com/labstack/echo/v4"
 )
 
-func HandleUser(sc context.ServerContext) echo.HandlerFunc {
+func HandleUser(sc context.Context) echo.HandlerFunc {
 	return func(c echo.Context) error {
-		var (
+		u := c.Get("session").(types.User)
-			u      db.User
+		return pages.User(&u).Render(context.RenderContext(sc, c), c.Response().Writer)
-			orders []db.Order
-			err    error
-			data   map[string]any
-		)
-		u = c.Get("session").(db.User)
-		if err = sc.Db.FetchOrders(&db.FetchOrdersWhere{Pubkey: u.Pubkey}, &orders); err != nil {
-			return err
-		}
-		data = map[string]any{
-			"session": c.Get("session"),
-			"user":    u,
-			"Orders":  orders,
-		}
-		return sc.Render(c, http.StatusOK, "user.html", data)
 	}
 }

server/router/handler/withdrawal.go

@@ -1,79 +0,0 @@
-package handler
-
-import (
-	context_ "context"
-	"database/sql"
-	"net/http"
-	"strings"
-	"time"
-
-	"git.ekzyis.com/ekzyis/delphi.market/db"
-	"git.ekzyis.com/ekzyis/delphi.market/server/router/context"
-	"github.com/labstack/echo/v4"
-	"github.com/lightningnetwork/lnd/zpay32"
-)
-
-func HandleWithdrawal(sc context.ServerContext) echo.HandlerFunc {
-	return func(c echo.Context) error {
-		var (
-			w   db.Withdrawal
-			u   db.User
-			inv *zpay32.Invoice
-			tx  *sql.Tx
-			err error
-		)
-		if err := c.Bind(&w); err != nil {
-			code := http.StatusBadRequest
-			return c.JSON(code, map[string]any{"status": code, "reason": "bolt11 required"})
-		}
-
-		if inv, err = zpay32.Decode(w.Bolt11, sc.Lnd.ChainParams); err != nil {
-			code := http.StatusBadRequest
-			return c.JSON(code, map[string]any{"status": code, "reason": "zpay32 decode error"})
-		}
-
-		// transaction start
-		ctx, cancel := context_.WithTimeout(c.Request().Context(), 5*time.Second)
-		defer cancel()
-		if tx, err = sc.Db.BeginTx(ctx, nil); err != nil {
-			return err
-		}
-		defer tx.Commit()
-
-		u = c.Get("session").(db.User)
-		w.Pubkey = u.Pubkey
-
-		// TODO deduct network fee from user balance
-		if u.Msats < int64(*inv.MilliSat) {
-			tx.Rollback()
-			code := http.StatusBadRequest
-			return c.JSON(code, map[string]any{"status": code, "reason": "insufficient balance"})
-		}
-
-		// create withdrawal
-		if err = sc.Db.CreateWithdrawal(tx, ctx, &w); err != nil {
-			tx.Rollback()
-			if strings.Contains(err.Error(), "violates unique constraint") {
-				code := http.StatusBadRequest
-				return c.JSON(code, map[string]any{"status": code, "reason": "bolt11 already submitted"})
-			}
-			return err
-		}
-
-		// pay invoice via LND
-		if err = sc.Lnd.PayInvoice(tx, w.Bolt11); err != nil {
-			tx.Rollback()
-			return err
-		}
-
-		// deduct balance from user
-		if _, err = tx.ExecContext(ctx, "UPDATE users SET msats = msats - $1 WHERE pubkey = $2", int64(*inv.MilliSat), u.Pubkey); err != nil {
-			tx.Rollback()
-			return err
-		}
-
-		tx.Commit()
-
-		return c.JSON(http.StatusOK, nil)
-	}
-}

server/router/middleware/lnd.go

@@ -7,7 +7,7 @@ import (
 	"github.com/labstack/echo/v4"
 )
 
-func LNDGuard(sc context.ServerContext) echo.MiddlewareFunc {
+func LNDGuard(sc context.Context) echo.MiddlewareFunc {
 	return func(next echo.HandlerFunc) echo.HandlerFunc {
 		return func(c echo.Context) error {
 			if sc.Lnd != nil {

server/router/middleware/session.go

@@ -3,34 +3,36 @@ package middleware
 import (
 	"database/sql"
 	"net/http"
-	"time"
 
-	"git.ekzyis.com/ekzyis/delphi.market/db"
 	"git.ekzyis.com/ekzyis/delphi.market/server/router/context"
+	"git.ekzyis.com/ekzyis/delphi.market/types"
 	"github.com/labstack/echo/v4"
 )
 
-func Session(sc context.ServerContext) echo.MiddlewareFunc {
+func Session(sc context.Context) echo.MiddlewareFunc {
 	return func(next echo.HandlerFunc) echo.HandlerFunc {
 		return func(c echo.Context) error {
 			var (
+				db     = sc.Db
+				ctx    = c.Request().Context()
 				cookie *http.Cookie
 				err    error
-				s      *db.Session
+				u      = types.User{}
-				u      *db.User
 			)
 			if cookie, err = c.Cookie("session"); err != nil {
 				// cookie not found
 				return next(c)
 			}
-			s = &db.Session{SessionId: cookie.Value}
+			if err = db.QueryRowContext(
-			if err = sc.Db.FetchSession(s); err == nil {
+				ctx,
+				""+
+					"SELECT u.id, u.name, u.created_at, COALESCE(u.ln_pubkey, ''), COALESCE(u.nostr_pubkey, ''), u.msats "+
+					"FROM sessions s LEFT JOIN users u ON u.id = s.user_id "+
+					"WHERE s.id = $1",
+				cookie.Value).
+				Scan(&u.Id, &u.Name, &u.CreatedAt, &u.LnPubkey, &u.NostrPubkey, &u.Msats); err == nil {
 				// session found
-				u = &db.User{Pubkey: s.Pubkey, Msats: s.Msats, LastSeen: time.Now()}
+				c.Set("session", u)
-				if err = sc.Db.UpdateUser(u); err != nil {
-					return err
-				}
-				c.Set("session", *u)
 			} else if err != sql.ErrNoRows {
 				return err
 			}
@@ -39,12 +41,13 @@ func Session(sc context.ServerContext) echo.MiddlewareFunc {
 	}
 }
 
-func SessionGuard(sc context.ServerContext) echo.MiddlewareFunc {
+func SessionGuard(sc context.Context) echo.MiddlewareFunc {
 	return func(next echo.HandlerFunc) echo.HandlerFunc {
 		return func(c echo.Context) error {
 			session := c.Get("session")
 			if session == nil {
-				return c.Redirect(http.StatusTemporaryRedirect, "/login")
+				// this seems to work for non-interactive and htmx requests
+				return c.Redirect(http.StatusSeeOther, "/login")
 			}
 			return next(c)
 		}

server/router/pages/about.templ

@@ -0,0 +1,75 @@
+package pages
+
+import "git.ekzyis.com/ekzyis/delphi.market/server/router/pages/components"
+
+templ About() {
+	<html>
+		@components.Head()
+		<body class="container">
+			@components.Nav()
+			<div id="content" class="flex flex-col">
+				@components.Figlet("random", "about")
+				<div class="flex flex-col mb-3">
+					<h1>📈 Prediction market?</h1>
+					<p>Here is an animated corgi that explains everything you need to know about prediction markets in 7 minutes:</p>
+					<iframe
+						class="my-3 mx-auto"
+						src="https://www.youtube.com/embed/DB5TfX7eaVY?si=FFG9wEun1VRl5p6w"
+						title="YouTube video player"
+						frameborder="0"
+						allow="accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share"
+						referrerpolicy="strict-origin-when-cross-origin"
+						allowfullscreen
+					></iframe>
+					<h1>👨‍💻 FOSS?</h1>
+					<p class="mb-3">
+						Yes! The code is available on
+						<a href="https://github.com/ekzyis/delphi.market/" target="_blank" rel="noopener noreferrer">Github</a>
+						or
+						<a href="https://git.ekzy.is/ekzyis/delphi.market/" target="_blank" rel="noopener noreferrer">Gitea</a>
+						under the MIT License.
+					</p>
+					<h1>💬 Contact?</h1>
+					<p class="mb-3">
+						If you have feedback, questions, bugs, ideas or anything else, feel free to reach out to me:
+						<br/>
+					</p>
+					<div class="text-center">
+						<a
+							href="https://stacker.news/ek"
+							target="_blank"
+							rel="noopener noreferrer"
+						>
+							stacker news
+						</a> |
+						<a
+							href="https://simplex.chat/contact#/?v=1-2&smp=smp%3A%2F%2F6iIcWT_dF2zN_w5xzZEY7HI2Prbh3ldP07YTyDexPjE%3D%40smp10.simplex.im%2FxNnPk9DkTbQJ6NckWom9mi5vheo_VPLm%23%2F%3Fv%3D1-2%26dh%3DMCowBQYDK2VuAyEAnFUiU0M8jS1JY34LxUoPr7mdJlFZwf3pFkjRrhprdQs%253D%26srv%3Drb2pbttocvnbrngnwziclp2f4ckjq65kebafws6g4hy22cdaiv5dwjqd.onion"
+							target="_blank"
+							rel="noopener noreferrer"
+						>
+							simplex
+						</a> |
+						<a
+							href="https://t.me/ekzyis"
+							target="_blank"
+							rel="noopener noreferrer"
+						>telegram</a> |
+						<a
+							href="https://signal.me/#eu/Qa/0P3M1keYAUju1LMktobIwHvEKTEMaQfGjjkL5U5ajYpsa6uFKvp165NDCTOXK"
+							target="_blank"
+							rel="noopener noreferrer"
+						>
+							signal
+						</a> |
+						<a
+							href="https://njump.me/npub16x07c4qz05yhqe2gy2q2u9ax359d2lc0tsh6wn3y70dmk8nv2j2s96s89d"
+							target="_blank"
+							rel="noopener noreferrer"
+						>nostr</a>
+					</div>
+				</div>
+			</div>
+			@components.Footer()
+		</body>
+	</html>
+}

server/router/pages/auth.templ

@@ -0,0 +1,69 @@
+package pages
+
+import (
+	"fmt"
+	"git.ekzyis.com/ekzyis/delphi.market/server/router/pages/components"
+)
+
+templ Auth(action string) {
+	<html>
+		@components.Head()
+		<body class="container">
+			@components.Nav()
+			<div id="content" class="flex flex-col text-center">
+				@components.Figlet("random", action)
+				<div
+					class="flex flex-col mb-3 text-center"
+					hx-target="#content"
+					hx-swap="outerHTML"
+					hx-select="#content"
+					hx-push-url="true"
+				>
+					<button
+						class="flex signup lightning my-3 items-center"
+						hx-get={ string(templ.SafeURL(fmt.Sprintf("/%s/lightning", action))) }
+					>
+						<svg
+							width="24"
+							height="24"
+							viewBox="0 0 24 24"
+							fill="var(--black)"
+							xmlns="http://www.w3.org/2000/svg"
+						>
+							<path d="M19 10.1907L8.48754 21L12.6726 12.7423H5L14.6157 3L11.5267 10.2835L19 10.1907Z"></path>
+						</svg>
+						{ action } with lightning
+					</button>
+					<button
+						class="flex signup nostr my-3 items-center"
+						hx-get={ string(templ.SafeURL(fmt.Sprintf("/%s/nostr", action))) }
+					>
+						<svg
+							class="me-1"
+							width="16"
+							height="16"
+							viewBox="0 0 875 875"
+							fill="var(--white)"
+							xmlns="http://www.w3.org/2000/svg"
+						>
+							<path
+								class="cls-1"
+								d="m684.72,485.57c.22,12.59-11.93,51.47-38.67,81.3-26.74,29.83-56.02,20.85-58.42,20.16s-3.09-4.46-7.89-3.77-9.6,6.17-18.86,7.2-17.49,1.71-26.06-1.37c-4.46.69-5.14.71-7.2,2.24s-17.83,10.79-21.6,11.47c0,7.2-1.37,44.57,0,55.89s3.77,25.71,7.54,36c3.77,10.29,2.74,10.63,7.54,9.94s13.37.34,15.77,4.11c2.4,3.77,1.37,6.51,5.49,8.23s60.69,17.14,99.43,19.2c26.74.69,42.86,2.74,52.12,19.54,1.37,7.89,7.54,13.03,11.31,14.06s8.23,2.06,12,5.83,1.03,8.23,5.49,11.66c4.46,3.43,14.74,8.57,25.37,13.71,10.63,5.14,15.09,13.37,15.77,16.11s1.71,10.97,1.71,10.97c0,0-8.91,0-10.97-2.06s-2.74-5.83-2.74-5.83c0,0-6.17,1.03-7.54,3.43s.69,2.74-7.89.69-11.66-3.77-18.17-8.57c-6.51-4.8-16.46-17.14-25.03-16.8,4.11,8.23,5.83,8.23,10.63,10.97s8.23,5.83,8.23,5.83l-7.2,4.46s-4.46,2.06-14.74-.69-11.66-4.46-12.69-10.63,0-9.26-2.74-14.4-4.11-15.77-22.29-21.26c-18.17-5.49-66.52-21.26-100.12-24.69s-22.63-2.74-28.11-1.37-15.77,4.46-26.4-1.37c-10.63-5.83-16.8-13.71-17.49-20.23s-1.71-10.97,0-19.2,3.43-19.89,1.71-26.74-14.06-55.89-19.89-64.12c-13.03,1.03-50.74-.69-50.74-.69,0,0-2.4-.69-17.49,5.83s-36.48,13.76-46.77,19.93-14.4,9.7-16.12,13.13c.12,3-1.23,7.72-2.79,9.06s-12.48,2.42-12.48,2.42c0,0-5.85,5.86-8.25,9.97-6.86,9.6-55.2,125.14-66.52,149.83-13.54,32.57-9.77,27.43-37.71,27.43s-8.06.3-8.06.3c0,0-12.34,5.88-16.8,5.88s-18.86-2.4-26.4,0-16.46,9.26-23.31,10.29-4.95-1.34-8.38-3.74c-4-.21-14.27-.12-14.27-.12,0,0,1.74-6.51,7.91-10.88,8.23-5.83,25.37-16.11,34.63-21.26s17.49-7.89,23.31-9.26,18.51-6.17,30.51-9.94,19.54-8.23,29.83-31.54c10.29-23.31,50.4-111.43,51.43-116.23.63-2.96,3.73-6.48,4.8-15.09.66-5.35-2.49-13.04,1.71-22.63,10.97-25.03,21.6-20.23,26.4-20.23s17.14.34,26.4-1.37,15.43-2.74,24.69-7.89,11.31-8.91,11.31-8.91l-19.89-3.43s-18.51.69-25.03-4.46-15.43-15.77-15.43-15.77l-7.54-7.2,1.03,8.57s-5.14-8.91-6.51-10.29-8.57-6.51-11.31-11.31-7.54-25.03-7.54-25.03l-6.17,13.03-1.71-18.86-5.14,7.2-2.74-16.11-4.8,8.23-3.43-14.4-5.83,4.46-2.4-10.29-5.83-3.43s-14.06-9.26-16.46-9.6-4.46,3.43-4.46,3.43l1.37,12-12.2-6.27-7-11.9s2.36,4.01-9.62,7.53c-20.55,0-21.89-2.28-24.93-3.94-1.31-6.56-5.57-10.11-5.57-10.11h-20.57l-.34-6.86-7.89,3.09.69-10.29h-14.06l1.03-11.31h-8.91s3.09-9.26,25.71-22.97,25.03-16.46,46.29-17.14c21.26-.69,32.91,2.74,46.29,8.23s38.74,13.71,43.89,17.49c11.31-9.94,28.46-19.89,34.29-19.89,1.03-2.4,6.19-12.33,17.96-17.6,35.31-15.81,108.13-34,131.53-35.54,31.2-2.06,7.89-1.37,39.09,2.06,31.2,3.43,54.17,7.54,69.6,12.69,12.58,4.19,25.03,9.6,34.29,2.06,4.33-1.81,11.81-1.34,17.83-5.14,30.69-25.09,34.72-32.35,43.63-41.95s20.14-24.91,22.54-45.14,4.46-58.29-10.63-88.12-28.8-45.26-34.63-69.26c-5.83-24-8.23-61.03-6.17-73.03,2.06-12,5.14-22.29,6.86-30.51s9.94-14.74,19.89-16.46c9.94-1.71,17.83,1.37,22.29,4.8,4.46,3.43,11.65,6.28,13.37,10.29.34,1.71-1.37,6.51,8.23,8.23,9.6,1.71,16.05,4.16,16.05,4.16,0,0,15.64,4.29,3.11,7.73-12.69,2.06-20.52-.71-24.29,1.69s-7.21,10.08-9.61,11.1-7.2.34-12,4.11-9.6,6.86-12.69,14.4-5.49,15.77-3.43,26.74,8.57,31.54,14.4,43.2c5.83,11.66,20.23,40.8,24.34,47.66s15.77,29.49,16.8,53.83,1.03,44.23,0,54.86-10.84,51.65-35.53,85.94c-8.16,14.14-23.21,31.9-24.67,35.03-1.45,3.13-3.02,4.88-1.61,7.65,4.62,9.05,12.87,22.13,14.71,29.22,2.29,6.64,6.99,16.13,7.22,28.72Z"
+							></path>
+						</svg>{ action } with nostr
+					</button>
+				</div>
+				<div class="flex flex-col mb-3 text-center">
+					if action == "signup" {
+						<small>
+							<a class="text-muted" href="/login">not your first time?</a>
+						</small>
+					} else {
+						<small><a class="text-muted" href="/signup">first time?</a></small>
+					}
+				</div>
+			</div>
+			@components.Footer()
+		</body>
+	</html>
+}

server/router/pages/components/figlet.templ

@@ -0,0 +1,13 @@
+package components
+
+import "git.ekzyis.com/ekzyis/delphi.market/lib"
+
+templ Figlet(font string, text string) {
+	<code class="figlet">
+		<strong>
+			<pre>
+				{ lib.Figlet(font, text) }
+			</pre>
+		</strong>
+	</code>
+}

server/router/pages/components/footer.templ

@@ -0,0 +1,21 @@
+package components
+
+import c "git.ekzyis.com/ekzyis/delphi.market/server/router/context"
+
+templ Footer() {
+	<footer class="flex justify-center my-3">
+		<div>
+			<hr/>
+			<small>
+				<code>
+					running
+					<a
+						href={ templ.SafeURL("https://github.com/ekzyis/delphi.market/commit/" + ctx.Value(c.CommitContextKey).(string)) }
+						target="_blank"
+						rel="noopener noreferrer"
+					>{ ctx.Value(c.CommitContextKey).(string) }</a>
+				</code>
+			</small>
+		</div>
+	</footer>
+}

server/router/pages/components/head.templ

@@ -0,0 +1,31 @@
+package components
+
+import c "git.ekzyis.com/ekzyis/delphi.market/server/router/context"
+
+templ Head() {
+	<head>
+		<title>delphi.market</title>
+		<link rel="icon" type="image/x-icon" href="/favicon.ico"/>
+		<link rel="apple-touch-icon" sizes="180x180" href="/apple-touch-icon.png"/>
+		<link rel="icon" type="image/png" sizes="32x32" href="/favicon-32x32.png"/>
+		<link rel="icon" type="image/png" sizes="16x16" href="/favicon-16x16.png"/>
+		<link rel="manifest" href="/site.webmanifest"/>
+		<link rel="stylesheet" href="/css/tailwind.css"/>
+		<meta name="viewport" content="width=device-width, initial-scale=1"/>
+		<meta name="theme-color" content="#191d21"/>
+		<meta
+			name="htmx-config"
+			content='{
+				"responseHandling": [
+						{ "code": "204", "swap": false },
+						{ "code": "[23]..", "swap": true },
+						{ "code": "[45]..", "swap": true, "error": true }
+				]
+			}'
+		/>
+		<script src="/js/htmx.js" integrity="sha384-Xh+GLLi0SMFPwtHQjT72aPG19QvKB8grnyRbYBNIdHWc2NkCrz65jlU7YrzO6qRp" crossorigin="anonymous"></script>
+		if ctx.Value(c.EnvContextKey) == "development" {
+			<script defer src="/js/hotreload.js"></script>
+		}
+	</head>
+}

server/router/pages/components/invoice.templ

@@ -0,0 +1,84 @@
+package components
+
+import (
+    "fmt"
+)
+
+templ Invoice(hash string, bolt11 string, msats int, expiresIn int, paid bool, redirectUrl templ.SafeURL) {
+    <div class="p-5 border border-muted bg-background text-center font-mono">
+        <div id="close" class="flex justify-end"><button class="w-fit text-muted hitbox hover:text-reset">X</button></div>
+        <div>Payment Required</div>
+        <div class="my-1">@Qr(bolt11, "lightning:"+bolt11)</div>
+        <div class="my-1">{ format(msats) }</div>
+        @InvoiceStatus(hash, expiresIn, paid, redirectUrl)
+        <div class="none" id="bolt11-data" bolt11-data={ templ.JSONString(bolt11) } hx-preserve></div>
+        <script type="text/javascript" id="bolt11-js" hx-preserve>
+            var $ = selector => document.querySelector(selector)
+            $("#close").addEventListener("click", function () {
+                // abort in-flight polls and prevent new polls
+                htmx.trigger("#poll", "htmx:abort")
+                $("#poll").addEventListener("htmx:beforeRequest", e => e.preventDefault())
+            })
+        </script>
+    </div>
+}
+
+templ InvoiceStatus(hash string, expiresIn int, paid bool, redirectUrl templ.SafeURL) {
+    if paid {
+        <div class="font-mono neon success my-1">PAID</div>
+        <div
+            id="poll"
+            hx-get={ string(redirectUrl) }
+            hx-trigger="load delay:3s"
+            hx-target="#content"
+            hx-swap="outerHTML"
+            hx-select="#content"
+            hx-push-url="true"
+            hx-select-oob="#modal" />
+    }
+    else if expiresIn <= 0 {
+        <div class="font-mono neon error my-1">EXPIRED</div>
+    } else {
+        <!-- invoice is pending -->
+        <div class="font-mono my-1" id="countdown" countdown-data={ templ.JSONString(expiresIn) } hx-preserve></div>
+        <script type="text/javascript" id="countdown-js" hx-preserve>
+            var $ = selector => document.querySelector(selector)
+            var expiresIn = JSON.parse($("#countdown").getAttribute("countdown-data"))
+
+            function pad(num, places) {
+                return String(num).padStart(places, "0")
+            }
+
+            function _countdown() {
+                var minutes = Math.floor(expiresIn / 60)
+                var seconds = expiresIn % 60
+                var text = `${pad(minutes, 2)}:${pad(seconds, 2)}`
+                try {
+                    $("#countdown").innerText = text
+                    expiresIn--
+                } catch {
+                    // countdown element disappeared
+                    clearInterval(interval)
+                }
+            }
+
+            _countdown()
+            var interval = setInterval(_countdown, 1000)
+        </script>
+        <div
+            id="poll"
+            hx-get={ string(templ.SafeURL("/invoice/" + hash)) }
+            hx-trigger="load delay:1s"
+            hx-target="#modal"
+            hx-swap="outerHTML"
+            hx-select="#modal" />
+    }
+}
+
+func format(msats int) string {
+    sats := msats / 1000
+    if sats == 1 {
+        return fmt.Sprintf("%d sat", sats)
+    }
+    return fmt.Sprintf("%d sats", sats)
+}

server/router/pages/components/modal.templ

@@ -0,0 +1,28 @@
+package components
+
+templ Modal(component templ.Component) {
+	if component != nil {
+		<div
+			id="modal"
+			class="fixed left-0 top-0 w-screen h-screen"
+		>
+			<div
+				class="fixed left-1/2 top-1/2 -translate-x-1/2 -translate-y-1/2"
+			>
+				<div class="flex justify-center p-3 w-screen">
+					@component
+				</div>
+				<script type="text/javascript">
+					var $ = selector => document.querySelector(selector)
+					$("#close").addEventListener("click", function () {
+						$("#modal").removeAttribute("class")
+						$("#modal").setAttribute("class", "hidden")
+						$("#modal").innerHTML = ""
+					})
+				</script>
+			</div>
+		</div>
+	} else {
+		<div id="modal" class="hidden"></div>
+	}
+}

server/router/pages/components/nav.templ

@@ -0,0 +1,28 @@
+package components
+
+import c "git.ekzyis.com/ekzyis/delphi.market/server/router/context"
+
+templ Nav() {
+	<header class="mt-3">
+		<nav
+			id="nav"
+			class="flex flex-row"
+			hx-target="#content"
+			hx-swap="outerHTML"
+			hx-select="#content"
+			hx-push-url="true"
+		>
+			<div>
+				<button hx-get="/">home</button>
+			</div>
+			<div class="ms-auto">
+				<button hx-get="/about">about</button>
+				if ctx.Value(c.SessionContextKey) != nil {
+					<button hx-get="/user">user</button>
+				} else {
+					<button hx-get="/signup">signup</button>
+				}
+			</div>
+		</nav>
+	</header>
+}

server/router/pages/components/qr.templ

@@ -0,0 +1,45 @@
+package components
+
+import (
+	"encoding/base64"
+	"github.com/skip2/go-qrcode"
+)
+
+templ Qr(value string, href string) {
+	if href != "" {
+		<a
+			class="mx-auto no-link"
+			href={ templ.SafeURL(href) }
+		>
+			<img src={ "data:image/jpeg;base64," + qrEncode(value) }/>
+		</a>
+		<small class="flex my-1 mx-auto">
+			<span class="block w-[188px] overflow-hidden">{ value }</span>
+			<button id="copy" class="ms-1 button w-[64px]" hx-preserve>copy</button>
+		</small>
+		@CopyButton(value)
+	} else {
+		<img src={ "data:image/jpeg;base64," + qrEncode(value) }/>
+	}
+}
+
+templ CopyButton(value string) {
+	<div class="none" id="copy-data" copy-data={ templ.JSONString(value) } hx-preserve></div>
+	<script type="text/javascript" id="copy-js" hx-preserve>
+		var $ = selector => document.querySelector(selector)
+		var value = JSON.parse($("#copy-data").getAttribute("copy-data"))
+		$("#copy").onclick = function () {
+			window.navigator.clipboard.writeText(value)
+			$("#copy").textContent = "copied"
+			setTimeout(() => $("#copy").textContent = "copy", 1000)
+		}
+	</script>
+}
+
+func qrEncode(value string) string {
+	png, err := qrcode.Encode(value, qrcode.Medium, 256)
+	if err != nil {
+		return ""
+	}
+	return base64.StdEncoding.EncodeToString([]byte(png))
+}

server/router/pages/error.templ

@@ -0,0 +1,21 @@
+package pages
+
+import (
+	"git.ekzyis.com/ekzyis/delphi.market/server/router/pages/components"
+	"net/http"
+	"strconv"
+)
+
+templ Error(code int) {
+	<html>
+		@components.Head()
+		<body class="container">
+			@components.Nav()
+			<div id="content" class="flex flex-col text-center">
+				@components.Figlet("random", strconv.Itoa(code))
+				<div class="font-mono mb-3">{ http.StatusText(code) }</div>
+			</div>
+			@components.Footer()
+		</body>
+	</html>
+}

server/router/pages/index.templ

@@ -0,0 +1,95 @@
+package pages
+
+import (
+	c "git.ekzyis.com/ekzyis/delphi.market/server/router/context"
+	"git.ekzyis.com/ekzyis/delphi.market/server/router/pages/components"
+	"git.ekzyis.com/ekzyis/delphi.market/types"
+	"fmt"
+	"github.com/dustin/go-humanize"
+)
+
+templ Index(markets []types.Market) {
+	<html>
+		@components.Head()
+		<body class="container">
+			@components.Nav()
+			<div id="content" class="flex flex-col text-center">
+				@components.Figlet("random", "delphi")
+				<div class="font-mono my-3"><small>A prediction market using the lightning network</small></div>
+				<div
+					id="grid-container"
+					class="border border-muted text-start"
+					hx-target="#grid-container"
+					hx-swap="outerHTML"
+					hx-select="#grid-container"
+					hx-push-url="true"
+				>
+					<div class="border border-muted">
+						<button hx-get="/" class={ tabStyle(ctx.Value(c.ReqPathContextKey).(string), "/") }>markets</button>
+						<button hx-get="/create" class={ tabStyle(ctx.Value(c.ReqPathContextKey).(string), "/create") }>create</button>
+					</div>
+					if ctx.Value(c.ReqPathContextKey).(string) == "/" {
+						<div class="grid grid-cols-[auto_fit-content(10%)_fit-content(10%)]">
+						for _, m := range markets {
+							<span class="ps-3 border-b border-muted pb-3 mt-3">
+							<a href={ templ.SafeURL(fmt.Sprintf("/market/%d", m.Id)) }>{ m.Question }</a>
+							<div class="text-small text-muted">{m.User.Name} / {humanize.Time(m.CreatedAt)} / {humanize.Time(m.EndDate)}</div>
+							</span>
+							<span class="px-3 border-b border-muted pb-3 mt-3 flex"><div class="self-center">51%</div></span>
+							<span class="pe-3 border-b border-muted pb-3 mt-3 flex"><div class="self-center">0</div></span>
+						}
+						</div>
+					} else {
+						<form
+							hx-post="/create"
+							hx-target="#modal"
+							hx-swap="outerHTML"
+							hx-select="#modal"
+							class="flex flex-col mx-3"
+						>
+							<label class="my-1" for="question">question</label>
+							<input
+								id="question"
+								name="question"
+								type="text"
+								class="my-1 p-1 text-black"
+								autocomplete="off"
+								required
+							/>
+							<div class="mt-3 mb-1">
+								<label for="description">description</label>
+								<span class="px-1 text-small text-muted">optional</span>
+							</div>
+							<textarea
+								id="description"
+								name="description"
+								type="text"
+								class="my-1 p-1 text-black"
+							></textarea>
+							<label class="mt-3" for="end_date">end date</label>
+							<input
+								id="end_date"
+								name="end_date"
+								type="date"
+								class="my-1 p-1 text-black"
+								autocomplete="off"
+								required
+							/>
+							<button type="submit" class="mt-3">submit</button>
+						</form>
+					}
+				</div>
+			</div>
+			@components.Modal(nil)
+			@components.Footer()
+		</body>
+	</html>
+}
+
+func tabStyle(path string, tab string) string {
+	class := "!no-underline"
+	if path == tab {
+		class += " font-bold border-b-none"
+	}
+	return class
+}

server/router/pages/lnAuth.templ

@@ -0,0 +1,27 @@
+package pages
+
+import "git.ekzyis.com/ekzyis/delphi.market/server/router/pages/components"
+
+templ LnAuth(lnurl string, action string) {
+	<html>
+		@components.Head()
+		<body class="container">
+			@components.Nav()
+			<div id="content" class="flex flex-col text-center">
+				@components.Figlet("random", action)
+				<small><code>with lightning</code></small>
+				<div
+					class="flex flex-col my-3 text-center"
+					hx-target="#content"
+					hx-swap="outerHTML"
+					hx-select="#content"
+					hx-push-url="true"
+				>
+					@components.Qr(lnurl, "lightning:"+lnurl)
+				</div>
+				<div hx-get="/session" hx-trigger="every 1s" hx-swap="none"></div>
+			</div>
+			@components.Footer()
+		</body>
+	</html>
+}

server/router/pages/login.templ

@@ -0,0 +1,55 @@
+package pages
+
+import "git.ekzyis.com/ekzyis/delphi.market/server/router/pages/components"
+
+templ Login() {
+	<html>
+		@components.Head()
+		<body class="container">
+			@components.Nav()
+			<div id="content" class="flex flex-col text-center">
+				@components.Figlet("random", "login")
+				<div
+					class="flex flex-col mb-3 text-center"
+					hx-target="#content"
+					hx-swap="outerHTML"
+					hx-select="#content"
+					hx-push-url="true"
+				>
+					<button class="flex login lightning my-3 items-center">
+						<svg
+							width="24"
+							height="24"
+							viewBox="0 0 24 24"
+							fill="var(--black)"
+							xmlns="http://www.w3.org/2000/svg"
+						>
+							<path d="M19 10.1907L8.48754 21L12.6726 12.7423H5L14.6157 3L11.5267 10.2835L19 10.1907Z"></path>
+						</svg>
+						login with lightning
+					</button>
+					<button class="flex login nostr my-3 items-center">
+						<svg
+							class="me-1"
+							width="16"
+							height="16"
+							viewBox="0 0 875 875"
+							fill="var(--white)"
+							xmlns="http://www.w3.org/2000/svg"
+						>
+							<path
+								class="cls-1"
+								d="m684.72,485.57c.22,12.59-11.93,51.47-38.67,81.3-26.74,29.83-56.02,20.85-58.42,20.16s-3.09-4.46-7.89-3.77-9.6,6.17-18.86,7.2-17.49,1.71-26.06-1.37c-4.46.69-5.14.71-7.2,2.24s-17.83,10.79-21.6,11.47c0,7.2-1.37,44.57,0,55.89s3.77,25.71,7.54,36c3.77,10.29,2.74,10.63,7.54,9.94s13.37.34,15.77,4.11c2.4,3.77,1.37,6.51,5.49,8.23s60.69,17.14,99.43,19.2c26.74.69,42.86,2.74,52.12,19.54,1.37,7.89,7.54,13.03,11.31,14.06s8.23,2.06,12,5.83,1.03,8.23,5.49,11.66c4.46,3.43,14.74,8.57,25.37,13.71,10.63,5.14,15.09,13.37,15.77,16.11s1.71,10.97,1.71,10.97c0,0-8.91,0-10.97-2.06s-2.74-5.83-2.74-5.83c0,0-6.17,1.03-7.54,3.43s.69,2.74-7.89.69-11.66-3.77-18.17-8.57c-6.51-4.8-16.46-17.14-25.03-16.8,4.11,8.23,5.83,8.23,10.63,10.97s8.23,5.83,8.23,5.83l-7.2,4.46s-4.46,2.06-14.74-.69-11.66-4.46-12.69-10.63,0-9.26-2.74-14.4-4.11-15.77-22.29-21.26c-18.17-5.49-66.52-21.26-100.12-24.69s-22.63-2.74-28.11-1.37-15.77,4.46-26.4-1.37c-10.63-5.83-16.8-13.71-17.49-20.23s-1.71-10.97,0-19.2,3.43-19.89,1.71-26.74-14.06-55.89-19.89-64.12c-13.03,1.03-50.74-.69-50.74-.69,0,0-2.4-.69-17.49,5.83s-36.48,13.76-46.77,19.93-14.4,9.7-16.12,13.13c.12,3-1.23,7.72-2.79,9.06s-12.48,2.42-12.48,2.42c0,0-5.85,5.86-8.25,9.97-6.86,9.6-55.2,125.14-66.52,149.83-13.54,32.57-9.77,27.43-37.71,27.43s-8.06.3-8.06.3c0,0-12.34,5.88-16.8,5.88s-18.86-2.4-26.4,0-16.46,9.26-23.31,10.29-4.95-1.34-8.38-3.74c-4-.21-14.27-.12-14.27-.12,0,0,1.74-6.51,7.91-10.88,8.23-5.83,25.37-16.11,34.63-21.26s17.49-7.89,23.31-9.26,18.51-6.17,30.51-9.94,19.54-8.23,29.83-31.54c10.29-23.31,50.4-111.43,51.43-116.23.63-2.96,3.73-6.48,4.8-15.09.66-5.35-2.49-13.04,1.71-22.63,10.97-25.03,21.6-20.23,26.4-20.23s17.14.34,26.4-1.37,15.43-2.74,24.69-7.89,11.31-8.91,11.31-8.91l-19.89-3.43s-18.51.69-25.03-4.46-15.43-15.77-15.43-15.77l-7.54-7.2,1.03,8.57s-5.14-8.91-6.51-10.29-8.57-6.51-11.31-11.31-7.54-25.03-7.54-25.03l-6.17,13.03-1.71-18.86-5.14,7.2-2.74-16.11-4.8,8.23-3.43-14.4-5.83,4.46-2.4-10.29-5.83-3.43s-14.06-9.26-16.46-9.6-4.46,3.43-4.46,3.43l1.37,12-12.2-6.27-7-11.9s2.36,4.01-9.62,7.53c-20.55,0-21.89-2.28-24.93-3.94-1.31-6.56-5.57-10.11-5.57-10.11h-20.57l-.34-6.86-7.89,3.09.69-10.29h-14.06l1.03-11.31h-8.91s3.09-9.26,25.71-22.97,25.03-16.46,46.29-17.14c21.26-.69,32.91,2.74,46.29,8.23s38.74,13.71,43.89,17.49c11.31-9.94,28.46-19.89,34.29-19.89,1.03-2.4,6.19-12.33,17.96-17.6,35.31-15.81,108.13-34,131.53-35.54,31.2-2.06,7.89-1.37,39.09,2.06,31.2,3.43,54.17,7.54,69.6,12.69,12.58,4.19,25.03,9.6,34.29,2.06,4.33-1.81,11.81-1.34,17.83-5.14,30.69-25.09,34.72-32.35,43.63-41.95s20.14-24.91,22.54-45.14,4.46-58.29-10.63-88.12-28.8-45.26-34.63-69.26c-5.83-24-8.23-61.03-6.17-73.03,2.06-12,5.14-22.29,6.86-30.51s9.94-14.74,19.89-16.46c9.94-1.71,17.83,1.37,22.29,4.8,4.46,3.43,11.65,6.28,13.37,10.29.34,1.71-1.37,6.51,8.23,8.23,9.6,1.71,16.05,4.16,16.05,4.16,0,0,15.64,4.29,3.11,7.73-12.69,2.06-20.52-.71-24.29,1.69s-7.21,10.08-9.61,11.1-7.2.34-12,4.11-9.6,6.86-12.69,14.4-5.49,15.77-3.43,26.74,8.57,31.54,14.4,43.2c5.83,11.66,20.23,40.8,24.34,47.66s15.77,29.49,16.8,53.83,1.03,44.23,0,54.86-10.84,51.65-35.53,85.94c-8.16,14.14-23.21,31.9-24.67,35.03-1.45,3.13-3.02,4.88-1.61,7.65,4.62,9.05,12.87,22.13,14.71,29.22,2.29,6.64,6.99,16.13,7.22,28.72Z"
+							></path>
+						</svg>
+						login with nostr
+					</button>
+				</div>
+				<div class="flex flex-col mb-3 text-center">
+					<small><a class="text-muted" href="/signup">first time?</a></small>
+				</div>
+			</div>
+			@components.Footer()
+		</body>
+	</html>
+}

server/router/pages/market.templ

@@ -0,0 +1,36 @@
+package pages
+
+import (
+    "git.ekzyis.com/ekzyis/delphi.market/server/router/pages/components"
+	"git.ekzyis.com/ekzyis/delphi.market/types"
+	"github.com/dustin/go-humanize"
+)
+
+// TODO: Add countdown? Use or at least show somewhere precise timestamps?
+
+templ Market(m types.Market) {
+    <html>
+		@components.Head()
+		<body class="container">
+			@components.Nav()
+			<div id="content" class="flex flex-col">
+				<small>
+					@components.Figlet("random", "market")
+				</small>
+				<div class="text-center font-bold my-1">{ m.Question }</div>
+				<div class="text-center text-muted my-1">{humanize.Time(m.EndDate)}</div>
+				<div class="text-center text-muted my-1"></div>
+				<blockquote cite="ekzyis" class="p-4 mb-4 border-s-4 border-muted">
+					{ m.Description }
+					<div class="text-muted text-right pt-4">― {m.User.Name}, { humanize.Time(m.CreatedAt) }</div>
+				</blockquote>
+				<div class="flex justify-center my-1">
+					<button class="neon success mx-1">BET YES</button>
+					<button class="neon error mx-1">BET NO</button>
+				</div>
+            </div>
+			@components.Modal(nil)
+			@components.Footer()
+		</body>
+	</html>
+}

server/router/pages/user.templ

@@ -0,0 +1,39 @@
+package pages
+
+import (
+	"git.ekzyis.com/ekzyis/delphi.market/server/router/pages/components"
+	"git.ekzyis.com/ekzyis/delphi.market/types"
+	"strconv"
+	"time"
+)
+
+templ User(user *types.User) {
+	<html>
+		@components.Head()
+		<body class="container">
+			@components.Nav()
+			<div id="content" class="flex flex-col">
+				@components.Figlet("random", "user")
+				<div
+					class="grid grid-cols-2 gap-4 my-3 mx-auto"
+					hx-target="#content"
+					hx-swap="outerHTML"
+					hx-select="#content"
+					hx-push-url="true"
+					hx-select-oob="#nav"
+				>
+					<div class="font-bold">id</div>
+					<div>{ strconv.Itoa(user.Id) }</div>
+					<div class="font-bold">name</div>
+					<div>{ user.Name }</div>
+					<div class="font-bold">joined</div>
+					<div>{ user.CreatedAt.Format(time.DateOnly) }</div>
+					<div class="font-bold">sats</div>
+					<div>{ strconv.Itoa(int(user.Msats) / 1000) }</div>
+					<button hx-post="/logout" class="col-span-2">logout</button>
+				</div>
+			</div>
+			@components.Footer()
+		</body>
+	</html>
+}

server/router/router.go

@@ -8,96 +8,26 @@ import (
 	"git.ekzyis.com/ekzyis/delphi.market/server/router/middleware"
 )
 
-type ServerContext = context.ServerContext
+type Context = context.Context
 
-type MiddlewareFunc func(sc ServerContext) echo.MiddlewareFunc
+func Init(e *echo.Echo, sc Context) {
-type HandlerFunc = func(sc ServerContext) echo.HandlerFunc
+	e.Use(middleware.Session(sc))
 
-func AddRoutes(e *echo.Echo, sc ServerContext) {
+	e.GET("/", handler.HandleIndex(sc))
-	mountMiddleware(e, sc)
+	e.GET("/create", handler.HandleIndex(sc))
-	addFrontendRoutes(e, sc)
+	e.POST("/create", handler.HandleCreate(sc), middleware.SessionGuard(sc))
-	addBackendRoutes(e, sc)
+	e.GET("/market/:id", handler.HandleMarket(sc))
-}
+	e.GET("/about", handler.HandleAbout(sc))
-
+
-func mountMiddleware(e *echo.Echo, sc ServerContext) {
+	e.GET("/login", handler.HandleAuth(sc, "login"))
-	Use(e, sc, middleware.Session)
+	e.GET("/login/:method", handler.HandleAuth(sc, "login"))
-}
+	e.GET("/signup", handler.HandleAuth(sc, "register"))
-
+	e.GET("/signup/:method", handler.HandleAuth(sc, "register"))
-func addFrontendRoutes(e *echo.Echo, sc ServerContext) {
+	e.GET("/api/lnauth/callback", handler.HandleLnAuthCallback(sc))
-	GET(e, sc, "/user",
+	e.GET("/session", handler.HandleSessionCheck(sc))
-		handler.HandleUser,
+
-		middleware.SessionGuard)
+	e.GET("/user", handler.HandleUser(sc), middleware.SessionGuard(sc))
-	GET(e, sc, "/market/:id",
+	e.POST("/logout", handler.HandleLogout(sc), middleware.SessionGuard(sc))
-		handler.HandleMarket,
+
-		middleware.SessionGuard)
+	e.GET("/invoice/:hash", handler.HandleInvoice(sc), middleware.SessionGuard(sc))
-	POST(e, sc, "/market/:id/order",
-		handler.HandleOrder,
-		middleware.SessionGuard,
-		middleware.LNDGuard)
-	GET(e, sc, "/invoice/:id",
-		handler.HandleInvoice,
-		middleware.SessionGuard)
-}
-
-func addBackendRoutes(e *echo.Echo, sc ServerContext) {
-	GET(e, sc, "/api/markets", handler.HandleMarkets)
-	POST(e, sc, "/api/market",
-		handler.HandleCreateMarket,
-		middleware.SessionGuard,
-		middleware.LNDGuard)
-	GET(e, sc, "/api/market/:id", handler.HandleMarket)
-	GET(e, sc, "/api/market/:id/orders", handler.HandleMarketOrders)
-	GET(e, sc, "/api/market/:id/stats", handler.HandleMarketStats)
-	POST(e, sc, "/api/market/:id/settle",
-		handler.HandleMarketSettlement,
-		middleware.SessionGuard,
-		middleware.LNDGuard)
-	POST(e, sc, "/api/order",
-		handler.HandleOrder,
-		middleware.SessionGuard,
-		middleware.LNDGuard)
-	DELETE(e, sc, "/api/order/:id",
-		handler.HandleDeleteOrder,
-		middleware.SessionGuard)
-	GET(e, sc, "/api/orders",
-		handler.HandleOrders,
-		middleware.SessionGuard)
-	GET(e, sc, "/api/login", handler.HandleLogin)
-	GET(e, sc, "/api/login/callback", handler.HandleLoginCallback)
-	POST(e, sc, "/api/logout", handler.HandleLogout)
-	GET(e, sc, "/api/session", handler.HandleCheckSession)
-	GET(e, sc, "/api/invoice/:id",
-		handler.HandleInvoiceStatus,
-		middleware.SessionGuard)
-	GET(e, sc, "/api/invoices",
-		handler.HandleInvoices,
-		middleware.SessionGuard)
-	POST(e, sc, "/api/withdrawal",
-		handler.HandleWithdrawal,
-		middleware.SessionGuard,
-		middleware.LNDGuard)
-}
-
-func GET(e *echo.Echo, sc ServerContext, path string, scF HandlerFunc, scM ...MiddlewareFunc) *echo.Route {
-	return e.GET(path, scF(sc), toMiddlewareFunc(sc, scM...)...)
-}
-
-func POST(e *echo.Echo, sc ServerContext, path string, scF HandlerFunc, scM ...MiddlewareFunc) *echo.Route {
-	return e.POST(path, scF(sc), toMiddlewareFunc(sc, scM...)...)
-}
-
-func DELETE(e *echo.Echo, sc ServerContext, path string, scF HandlerFunc, scM ...MiddlewareFunc) *echo.Route {
-	return e.DELETE(path, scF(sc), toMiddlewareFunc(sc, scM...)...)
-}
-
-func Use(e *echo.Echo, sc ServerContext, scM ...MiddlewareFunc) {
-	e.Use(toMiddlewareFunc(sc, scM...)...)
-}
-
-func toMiddlewareFunc(sc ServerContext, scM ...MiddlewareFunc) []echo.MiddlewareFunc {
-	var m []echo.MiddlewareFunc
-	for _, m_ := range scM {
-		m = append(m, m_(sc))
-	}
-	return m
 }

server/router/template.go

@@ -1,55 +0,0 @@
-package router
-
-import (
-	"html/template"
-	"io"
-
-	"github.com/labstack/echo/v4"
-	"golang.org/x/exp/constraints"
-)
-
-type Template struct {
-	templates *template.Template
-}
-
-type Number interface {
-	constraints.Integer | constraints.Float
-}
-
-func (t *Template) Render(w io.Writer, name string, data interface{}, c echo.Context) error {
-	return t.templates.ExecuteTemplate(w, name, data)
-}
-
-func ParseTemplates(pattern string) *Template {
-	return &Template{
-		templates: template.Must(template.New("").Funcs(template.FuncMap{
-			"add":    add[int64],
-			"sub":    sub[int64],
-			"div":    div[int64],
-			"substr": substr,
-		}).ParseGlob("pages/**.html")),
-	}
-}
-
-func add[T Number](arg1 T, arg2 T) T {
-	return arg1 + arg2
-}
-
-func sub[T Number](arg1 T, arg2 T) T {
-	return arg1 - arg2
-}
-
-func div[T Number](arg1 T, arg2 T) T {
-	return arg1 / arg2
-}
-
-func substr(s string, start, length int) string {
-	if start < 0 || start >= len(s) {
-		return ""
-	}
-	end := start + length
-	if end > len(s) {
-		end = len(s)
-	}
-	return s[start:end]
-}

server/server.go

@@ -11,16 +11,17 @@ type Server struct {
 	*echo.Echo
 }
 
-type ServerContext = router.ServerContext
+type Context = router.Context
 
-func New(ctx ServerContext) *Server {
+func New(ctx Context) *Server {
 	var (
 		e *echo.Echo
 		s *Server
 	)
 	e = echo.New()
+
 	e.Static("/", "public")
-	e.Renderer = router.ParseTemplates("pages/**.html")
+
 	e.Use(middleware.LoggerWithConfig(middleware.LoggerConfig{
 		Format:           "${time_custom} ${method} ${uri} ${status}\n",
 		CustomTimeFormat: "2006-01-02 15:04:05.00000-0700",
@@ -30,11 +31,12 @@ func New(ctx ServerContext) *Server {
 		AllowCredentials: true,
 		AllowHeaders:     []string{echo.HeaderOrigin, echo.HeaderContentType, echo.HeaderAccept},
 	}))
-	e.HTTPErrorHandler = httpErrorHandler
+
+	e.HTTPErrorHandler = httpErrorHandler(ctx)
 
 	s = &Server{e}
 
-	router.AddRoutes(e, ctx)
+	router.Init(e, ctx)
 
 	return s
 }

shell.nix

@@ -0,0 +1,19 @@
+let
+  nixpkgs = fetchTarball "https://github.com/NixOS/nixpkgs/tarball/nixos-23.11";
+  pkgs = import nixpkgs { config = {}; overlays = []; };
+in
+
+pkgs.mkShell {
+  packages = with pkgs; [
+    go
+    tailwindcss
+    gnumake
+    inotify-tools
+    figlet
+    postgresql
+  ];
+  shellHook = ''
+    # install templ if not already installed
+    command -v templ > /dev/null || go install github.com/a-h/templ/cmd/templ@latest
+  '';
+}

tailwind.config.js

@@ -0,0 +1,30 @@
+/** @type {import('tailwindcss').Config} */
+module.exports = {
+  content: ["./server/router/pages/**/*.templ"],
+  theme: {
+    container: {
+      center: true,
+      padding: '1rem'
+    },
+    extend: {
+      colors: {
+        'background': '191d21',
+        'muted': '#6c757d',
+      },
+    },
+  },
+  plugins: [
+    function ({ addComponents }) {
+      addComponents({
+        '.container': {
+          '@screen lg': {
+            maxWidth: '768px',
+          },
+          '@screen xl': {
+            maxWidth: '768px',
+          },
+        }
+      })
+    }
+  ],
+}

test/mocks.go

@@ -5,7 +5,6 @@ import (
 	"net/http"
 	"net/http/httptest"
 
-	"git.ekzyis.com/ekzyis/delphi.market/server/router"
 	"github.com/labstack/echo/v4"
 )
 
@@ -16,8 +15,9 @@ func HTTPMocks(method string, target string, body io.Reader) (*echo.Echo, *http.
 		rec *httptest.ResponseRecorder
 	)
 	e = echo.New()
-	e.Renderer = router.ParseTemplates("pages/**.html")
+
 	req = httptest.NewRequest(method, target, body)
 	rec = httptest.NewRecorder()
+
 	return e, req, rec
 }

types/types.go

@@ -0,0 +1,39 @@
+package types
+
+import (
+	"time"
+
+	"gopkg.in/guregu/null.v4"
+)
+
+type User struct {
+	Id          int
+	Name        string
+	CreatedAt   time.Time
+	LnPubkey    null.String
+	NostrPubkey null.String
+	Msats       int64
+}
+
+type Invoice struct {
+	Id            int
+	UserId        int
+	Msats         int64
+	MsatsReceived int64
+	Hash          string
+	Bolt11        string
+	CreatedAt     time.Time
+	ExpiresAt     time.Time
+	ConfirmedAt   null.Time
+	HeldSince     bool
+	Description   string
+}
+
+type Market struct {
+	Id          int
+	User        User
+	Question    string
+	Description string
+	CreatedAt   time.Time
+	EndDate     time.Time
+}

vue/.browserslistrc

@@ -1,4 +0,0 @@
-> 1%
-last 2 versions
-not dead
-not ie 11

vue/.editorconfig

@@ -1,5 +0,0 @@
-[*.{js,jsx,ts,tsx,vue}]
-indent_style = space
-indent_size = 2
-trim_trailing_whitespace = true
-insert_final_newline = true

vue/.eslintrc.js

@@ -1,18 +0,0 @@
-module.exports = {
-  root: true,
-  env: {
-    node: true
-  },
-  extends: [
-    'plugin:vue/vue3-essential',
-    '@vue/standard'
-  ],
-  parserOptions: {
-    parser: '@babel/eslint-parser'
-  },
-  rules: {
-    'no-console': process.env.NODE_ENV === 'production' ? 'warn' : 'off',
-    'no-debugger': process.env.NODE_ENV === 'production' ? 'warn' : 'off',
-    'vue/multi-word-component-names': 'off'
-  }
-}

vue/.gitignore

@@ -1,23 +0,0 @@
-.DS_Store
-node_modules
-/dist
-
-
-# local env files
-.env.local
-.env.*.local
-
-# Log files
-npm-debug.log*
-yarn-debug.log*
-yarn-error.log*
-pnpm-debug.log*
-
-# Editor directories and files
-.idea
-.vscode
-*.suo
-*.ntvs*
-*.njsproj
-*.sln
-*.sw?

vue/README.md

@@ -1,24 +0,0 @@
-# delphi.market
-
-## Project setup
-```
-yarn install
-```
-
-### Compiles and hot-reloads for development
-```
-yarn serve
-```
-
-### Compiles and minifies for production
-```
-yarn build
-```
-
-### Lints and fixes files
-```
-yarn lint
-```
-
-### Customize configuration
-See [Configuration Reference](https://cli.vuejs.org/config/).

vue/babel.config.js

@@ -1,5 +0,0 @@
-module.exports = {
-  presets: [
-    '@vue/cli-plugin-babel/preset'
-  ]
-}

vue/index.html

@@ -1,27 +0,0 @@
-<!DOCTYPE html>
-<html lang="">
-
-<head>
-  <meta charset="utf-8">
-  <meta http-equiv="X-UA-Compatible" content="IE=edge">
-  <meta name="viewport" content="width=device-width,initial-scale=1.0">
-  <link rel="icon" href="/favicon.ico">
-  <script type="module" src="/src/main.js"></script>
-  <title>delphi.market</title>
-  <link rel="manifest" href="/manifest.json">
-  <meta name="theme-color" content="#8787a4">
-  <meta name="apple-mobile-web-app-capable" content="yes">
-  <meta name="apple-mobile-web-app-status-bar-style" content="black">
-  <meta name="viewport" content="width=device-width, initial-scale=1.0">
-</head>
-
-<body>
-  <noscript>
-    <strong>We're sorry but this site doesn't work properly without JavaScript enabled. Please enable it to
-      continue.</strong>
-  </noscript>
-  <div id="app"></div>
-  <!-- built files will be auto injected -->
-</body>
-
-</html>

vue/jsconfig.json

@@ -1,19 +0,0 @@
-{
-  "compilerOptions": {
-    "target": "es5",
-    "module": "esnext",
-    "baseUrl": "./",
-    "moduleResolution": "node",
-    "paths": {
-      "@/*": [
-        "src/*"
-      ]
-    },
-    "lib": [
-      "esnext",
-      "dom",
-      "dom.iterable",
-      "scripthost"
-    ]
-  }
-}