package main

import (
	"encoding/hex"
	"flag"
	"fmt"
	"log"
	"net/http"

	"github.com/ekzyis/magicwallet/db"
	"github.com/ekzyis/magicwallet/env"
	"github.com/ekzyis/magicwallet/lightning"
	"github.com/ekzyis/magicwallet/server"
	"github.com/lightninglabs/lndclient"
)

func banner() {
	fmt.Printf("" +
		".__\n" +
		"|  |__   ___________  _____   ____   ______\n" +
		"|  |  \\_/ __ \\_  __ \\/     \\_/ __ \\ /  ___/\n" +
		"|   Y  \\  ___/|  | \\/  Y Y  \\  ___/ \\___ \\\n" +
		"|___|  /\\___  >__|  |__|_|  /\\___  >____  >\n" +
		"     \\/     \\/...wallet...\\/     \\/     \\/\n",
	)
}

func main() {
	var (
		dbUrl       string
		lndAddress  string
		lndCert     string
		lndMacaroon string
		lndNetwork  string
	)
	banner()

	// env
	if err := env.Load(); err != nil {
		log.Fatal(err)
	}
	flag.StringVar(&dbUrl, "DATABASE_URL", "", "Public URL of website")
	flag.StringVar(&lndAddress, "LND_ADDRESS", "localhost:10001", "LND gRPC server address")
	flag.StringVar(&lndCert, "LND_CERT", "", "LND TLS certificate in hex")
	flag.StringVar(&lndMacaroon, "LND_MACAROON", "", "LND macaroon in hex")
	flag.StringVar(&lndNetwork, "LND_NETWORK", "regtest", "LND network")
	env.Parse()

	log.Printf("Commit:      %s", env.CommitShortSha)
	log.Printf("Environment: %s", env.Env)

	// database
	db_, err := db.New(dbUrl)
	if err != nil {
		log.Printf("❌ failed to connect to db: %v\n", err)
	}

	// lightning
	tlsData, err := hex.DecodeString(lndCert)
	if err != nil {
		log.Printf("❌ failed to decode LND TLS certificate: %v\n", err)
	}
	lnd_, err := lightning.New(&lightning.LNDConfig{
		LndAddress:        lndAddress,
		CustomMacaroonHex: lndMacaroon,
		TLSData:           string(tlsData),
		Network:           lndclient.Network(lndNetwork),
		Insecure:          false,
	})
	if err != nil {
		log.Printf("❌ failed to connect to LND: %v\n", err)
		lnd_ = nil
	} else {
		log.Printf("✅ connected to %s LND v%s\n", lndAddress, lnd_.Version.Version)
	}

	// server
	ctx := server.Context{
		Environment:    env.Env,
		CommitShortSha: env.CommitShortSha,
		Db:             db_,
		Lnd:            lnd_,
	}
	s := server.New(ctx)

	// TODO: read port from env
	if err = s.Start(fmt.Sprintf("127.0.0.1:%d", env.Port)); err != http.ErrServerClosed {
		log.Fatal(err)
	}
}