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3
.env.template
Normal file
3
.env.template
Normal file
@ -0,0 +1,3 @@
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SN_AUTH_COOKIE=
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DISCORD_TOKEN=
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DISCORD_CHANNEL_ID=
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1
.gitignore
vendored
1
.gitignore
vendored
@ -3,4 +3,3 @@
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# go executable
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hnbot
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hnbot.sqlite3
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10
README.md
10
README.md
@ -1,11 +1,7 @@
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# hnbot
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> Hello, I am a bot posting top stories from HN.
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> Hello, I am a bot crossposting top posts from HN.
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>
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> My original mission was to orange-pill HN by offering the OPs on HN to claim the sats their stories received here.
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However, my comments were shadowbanned and ultimately not approved by dang, the site admin.
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See this thread: [#164155](https://stacker.news/items/164155)
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>
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> If you are one of these OPs and want to claim your sats, reply to this bio and we will find a solution!
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> I curate content to only post stuff which could be interesting for the SN community on a best-efforts basis.
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-- https://stacker.news/hn
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-- https://stacker.news/items/161788
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96
db/db.go
96
db/db.go
@ -1,96 +0,0 @@
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package db
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import (
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"database/sql"
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"fmt"
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"log"
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"github.com/ekzyis/hnbot/hn"
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_ "github.com/mattn/go-sqlite3"
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)
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var (
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_db *sql.DB
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)
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func init() {
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var err error
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_db, err = sql.Open("sqlite3", "hnbot.sqlite3")
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if err != nil {
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log.Fatal(err)
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}
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migrate(_db)
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}
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func Query(query string, args ...interface{}) (*sql.Rows, error) {
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return _db.Query(query, args...)
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}
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func migrate(db *sql.DB) {
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if _, err := db.Exec(`
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CREATE TABLE IF NOT EXISTS hn_items (
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id INTEGER NOT NULL,
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created_at TIMESTAMP WITH TIME ZONE NOT NULL DEFAULT CURRENT_TIMESTAMP,
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time TIMESTAMP WITH TIMEZONE NOT NULL DEFAULT CURRENT_TIMESTAMP,
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title TEXT NOT NULL,
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url TEXT,
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author TEXT NOT NULL,
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ndescendants INTEGER NOT NULL,
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score INTEGER NOT NULL,
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rank INTEGER NOT NULL,
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PRIMARY KEY (id, created_at)
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);
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`); err != nil {
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err = fmt.Errorf("error during migration: %w", err)
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log.Fatal(err)
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}
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if _, err := db.Exec(`
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CREATE TABLE IF NOT EXISTS sn_items (
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id INTEGER NOT NULL,
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created_at TIMESTAMP WITH TIME ZONE NOT NULL DEFAULT CURRENT_TIMESTAMP,
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hn_id INTEGER NOT NULL REFERENCES hn_items(id),
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PRIMARY KEY (id, hn_id)
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);
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`); err != nil {
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err = fmt.Errorf("error during migration: %w", err)
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log.Fatal(err)
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}
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}
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func ItemHasComment(parentId int) bool {
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var count int
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err := _db.QueryRow(`SELECT COUNT(1) FROM comments WHERE parent_id = ?`, parentId).Scan(&count)
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if err != nil {
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err = fmt.Errorf("error during item check: %w", err)
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log.Fatal(err)
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}
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return count > 0
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}
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func SaveHnItems(story *[]hn.Item) error {
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for i, s := range *story {
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if err := SaveHnItem(&s, i+1); err != nil {
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return err
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}
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}
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return nil
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}
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func SaveHnItem(s *hn.Item, rank int) error {
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if _, err := _db.Exec(`
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INSERT INTO hn_items(id, time, title, url, author, ndescendants, score, rank)
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VALUES (?, ?, ?, ?, ?, ?, ?, ?)`,
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s.ID, s.Time, s.Title, s.Url, s.By, s.Descendants, s.Score, rank); err != nil {
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err = fmt.Errorf("error during item insert: %w", err)
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return err
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}
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return nil
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}
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func SaveSnItem(id int, hnId int) error {
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if _, err := _db.Exec(`INSERT INTO sn_items(id, hn_id) VALUES (?, ?)`, id, hnId); err != nil {
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err = fmt.Errorf("error during sn item insert: %w", err)
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return err
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}
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return nil
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}
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187
discord.go
Normal file
187
discord.go
Normal file
@ -0,0 +1,187 @@
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package main
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import (
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"errors"
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"fmt"
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"log"
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"strings"
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"github.com/bwmarrin/discordgo"
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"github.com/dustin/go-humanize"
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"github.com/joho/godotenv"
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"github.com/namsral/flag"
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)
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var (
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DiscordToken string
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dg *discordgo.Session
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DiscordChannelId string
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)
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func init() {
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err := godotenv.Load()
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if err != nil {
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log.Fatal("Error loading .env file")
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}
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flag.StringVar(&DiscordToken, "DISCORD_TOKEN", "", "Discord bot token")
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flag.StringVar(&DiscordChannelId, "DISCORD_CHANNEL_ID", "", "Discord channel id")
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flag.Parse()
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if DiscordToken == "" {
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log.Fatal("DISCORD_TOKEN not set")
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}
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if DiscordChannelId == "" {
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log.Fatal("DISCORD_CHANNEL_ID not set")
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}
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initBot()
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}
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func initBot() {
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var err error
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dg, err = discordgo.New("Bot " + DiscordToken)
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if err != nil {
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log.Fatal("error creating discord session:", err)
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}
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dg.AddHandler(func(s *discordgo.Session, event *discordgo.Ready) {
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log.Println("Logged in as", event.User.Username)
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})
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dg.AddHandler(onMessage)
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dg.AddHandler(onMessageReact)
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dg.Identify.Intents = discordgo.IntentsGuildMessages | discordgo.IntentsMessageContent | discordgo.IntentGuildMessageReactions
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err = dg.Open()
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if err != nil {
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log.Fatal("error opening connection to discord: ", err, " -- Is your token correct?")
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}
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}
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func onMessage(s *discordgo.Session, m *discordgo.MessageCreate) {
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if m.Author.ID == s.State.User.ID {
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return
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}
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hackerNewsId, err := ParseHackerNewsLink(m.Content)
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if err != nil {
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return
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}
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story, err := FetchStoryById(hackerNewsId)
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_, err = PostStoryToStackerNews(&story, PostStoryOptions{SkipDupes: false})
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if err != nil {
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var dupesErr *DupesError
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if errors.As(err, &dupesErr) {
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SendDupesErrorToDiscord(hackerNewsId, dupesErr)
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return
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}
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SendErrorToDiscord(err)
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}
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}
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func onMessageReact(s *discordgo.Session, reaction *discordgo.MessageReactionAdd) {
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if reaction.UserID == s.State.User.ID {
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return
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}
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if reaction.Emoji.Name != "⏭️" {
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return
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}
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m, err := s.ChannelMessage(reaction.ChannelID, reaction.MessageID)
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if err != nil {
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SendErrorToDiscord(err)
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return
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}
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if len(m.Embeds) == 0 {
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return
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}
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embed := m.Embeds[0]
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if !strings.Contains(embed.Title, "dupe(s) found for") {
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return
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}
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id, err := ParseHackerNewsLink(embed.Footer.Text)
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if err != nil {
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return
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}
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story, err := FetchStoryById(id)
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if err != nil {
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SendErrorToDiscord(err)
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return
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}
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id, err = PostStoryToStackerNews(&story, PostStoryOptions{SkipDupes: true})
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if err != nil {
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SendErrorToDiscord(err)
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}
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}
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func SendDupesErrorToDiscord(hackerNewsId int, dupesErr *DupesError) {
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msg := fmt.Sprint(dupesErr)
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log.Println(msg)
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title := fmt.Sprintf("%d dupe(s) found for %s:", len(dupesErr.Dupes), dupesErr.Url)
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color := 0xffc107
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var fields []*discordgo.MessageEmbedField
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for _, dupe := range dupesErr.Dupes {
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fields = append(fields,
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&discordgo.MessageEmbedField{
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Name: "Title",
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Value: dupe.Title,
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Inline: false,
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},
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&discordgo.MessageEmbedField{
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Name: "Id",
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Value: StackerNewsItemLink(dupe.Id),
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Inline: true,
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},
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&discordgo.MessageEmbedField{
|
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Name: "Url",
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Value: dupe.Url,
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Inline: true,
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},
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&discordgo.MessageEmbedField{
|
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Name: "User",
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Value: dupe.User.Name,
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Inline: true,
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},
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&discordgo.MessageEmbedField{
|
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Name: "Created",
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Value: humanize.Time(dupe.CreatedAt),
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Inline: true,
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},
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&discordgo.MessageEmbedField{
|
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Name: "Sats",
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Value: fmt.Sprint(dupe.Sats),
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Inline: true,
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},
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&discordgo.MessageEmbedField{
|
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Name: "Comments",
|
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Value: fmt.Sprint(dupe.NComments),
|
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Inline: true,
|
||||
},
|
||||
)
|
||||
}
|
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|
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embed := discordgo.MessageEmbed{
|
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Title: title,
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Color: color,
|
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Fields: fields,
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Footer: &discordgo.MessageEmbedFooter{
|
||||
Text: HackerNewsItemLink(hackerNewsId),
|
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IconURL: "https://news.ycombinator.com/y18.gif",
|
||||
},
|
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}
|
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SendEmbedToDiscord(&embed)
|
||||
}
|
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|
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func SendEmbedToDiscord(embed *discordgo.MessageEmbed) {
|
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_, err := dg.ChannelMessageSendEmbed(DiscordChannelId, embed)
|
||||
if err != nil {
|
||||
err = fmt.Errorf("error during sending embed: %w", err)
|
||||
log.Println(err)
|
||||
}
|
||||
}
|
||||
|
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func SendErrorToDiscord(err error) {
|
||||
msg := fmt.Sprint(err)
|
||||
log.Println(msg)
|
||||
|
||||
embed := discordgo.MessageEmbed{
|
||||
Title: "Error",
|
||||
Color: 0xff0000,
|
||||
Description: msg,
|
||||
}
|
||||
SendEmbedToDiscord(&embed)
|
||||
}
|
||||
16
go.mod
16
go.mod
@ -1,12 +1,20 @@
|
||||
module github.com/ekzyis/hnbot
|
||||
module gitlab.com/ekzyis/hnbot
|
||||
|
||||
go 1.20
|
||||
|
||||
require (
|
||||
github.com/dustin/go-humanize v1.0.1
|
||||
github.com/ekzyis/snappy v0.8.0
|
||||
github.com/joho/godotenv v1.5.1
|
||||
github.com/mattn/go-sqlite3 v1.14.22
|
||||
github.com/namsral/flag v1.7.4-pre
|
||||
github.com/stretchr/testify v1.8.2
|
||||
)
|
||||
|
||||
require gopkg.in/guregu/null.v4 v4.0.0 // indirect
|
||||
require (
|
||||
github.com/bwmarrin/discordgo v0.27.1 // indirect
|
||||
github.com/davecgh/go-spew v1.1.1 // indirect
|
||||
github.com/gorilla/websocket v1.4.2 // indirect
|
||||
github.com/pmezard/go-difflib v1.0.0 // indirect
|
||||
golang.org/x/crypto v0.0.0-20210421170649-83a5a9bb288b // indirect
|
||||
golang.org/x/sys v0.0.0-20201119102817-f84b799fce68 // indirect
|
||||
gopkg.in/yaml.v3 v3.0.1 // indirect
|
||||
)
|
||||
|
||||
37
go.sum
37
go.sum
@ -1,10 +1,35 @@
|
||||
github.com/bwmarrin/discordgo v0.27.1 h1:ib9AIc/dom1E/fSIulrBwnez0CToJE113ZGt4HoliGY=
|
||||
github.com/bwmarrin/discordgo v0.27.1/go.mod h1:NJZpH+1AfhIcyQsPeuBKsUtYrRnjkyu0kIVMCHkZtRY=
|
||||
github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
|
||||
github.com/davecgh/go-spew v1.1.1 h1:vj9j/u1bqnvCEfJOwUhtlOARqs3+rkHYY13jYWTU97c=
|
||||
github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
|
||||
github.com/dustin/go-humanize v1.0.1 h1:GzkhY7T5VNhEkwH0PVJgjz+fX1rhBrR7pRT3mDkpeCY=
|
||||
github.com/dustin/go-humanize v1.0.1/go.mod h1:Mu1zIs6XwVuF/gI1OepvI0qD18qycQx+mFykh5fBlto=
|
||||
github.com/ekzyis/snappy v0.8.0 h1:e7dRR384XJgNYa1FWNIZmqITSHOSanteBFXQJPfcQwg=
|
||||
github.com/ekzyis/snappy v0.8.0/go.mod h1:UksYI0dU0+cnzz0LQjWB1P0QQP/ghx47e4atP99a5Lk=
|
||||
github.com/gorilla/websocket v1.4.2 h1:+/TMaTYc4QFitKJxsQ7Yye35DkWvkdLcvGKqM+x0Ufc=
|
||||
github.com/gorilla/websocket v1.4.2/go.mod h1:YR8l580nyteQvAITg2hZ9XVh4b55+EU/adAjf1fMHhE=
|
||||
github.com/joho/godotenv v1.5.1 h1:7eLL/+HRGLY0ldzfGMeQkb7vMd0as4CfYvUVzLqw0N0=
|
||||
github.com/joho/godotenv v1.5.1/go.mod h1:f4LDr5Voq0i2e/R5DDNOoa2zzDfwtkZa6DnEwAbqwq4=
|
||||
github.com/mattn/go-sqlite3 v1.14.22 h1:2gZY6PC6kBnID23Tichd1K+Z0oS6nE/XwU+Vz/5o4kU=
|
||||
github.com/mattn/go-sqlite3 v1.14.22/go.mod h1:Uh1q+B4BYcTPb+yiD3kU8Ct7aC0hY9fxUwlHK0RXw+Y=
|
||||
gopkg.in/guregu/null.v4 v4.0.0 h1:1Wm3S1WEA2I26Kq+6vcW+w0gcDo44YKYD7YIEJNHDjg=
|
||||
gopkg.in/guregu/null.v4 v4.0.0/go.mod h1:YoQhUrADuG3i9WqesrCmpNRwm1ypAgSHYqoOcTu/JrI=
|
||||
github.com/namsral/flag v1.7.4-pre h1:b2ScHhoCUkbsq0d2C15Mv+VU8bl8hAXV8arnWiOHNZs=
|
||||
github.com/namsral/flag v1.7.4-pre/go.mod h1:OXldTctbM6SWH1K899kPZcf65KxJiD7MsceFUpB5yDo=
|
||||
github.com/pmezard/go-difflib v1.0.0 h1:4DBwDE0NGyQoBHbLQYPwSUPoCMWR5BEzIk/f1lZbAQM=
|
||||
github.com/pmezard/go-difflib v1.0.0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZNVY4sRDYZ/4=
|
||||
github.com/stretchr/objx v0.1.0/go.mod h1:HFkY916IF+rwdDfMAkV7OtwuqBVzrE8GR6GFx+wExME=
|
||||
github.com/stretchr/objx v0.4.0/go.mod h1:YvHI0jy2hoMjB+UWwv71VJQ9isScKT/TqJzVSSt89Yw=
|
||||
github.com/stretchr/objx v0.5.0/go.mod h1:Yh+to48EsGEfYuaHDzXPcE3xhTkx73EhmCGUpEOglKo=
|
||||
github.com/stretchr/testify v1.7.1/go.mod h1:6Fq8oRcR53rry900zMqJjRRixrwX3KX962/h/Wwjteg=
|
||||
github.com/stretchr/testify v1.8.0/go.mod h1:yNjHg4UonilssWZ8iaSj1OCr/vHnekPRkoO+kdMU+MU=
|
||||
github.com/stretchr/testify v1.8.2 h1:+h33VjcLVPDHtOdpUCuF+7gSuG3yGIftsP1YvFihtJ8=
|
||||
github.com/stretchr/testify v1.8.2/go.mod h1:w2LPCIKwWwSfY2zedu0+kehJoqGctiVI29o6fzry7u4=
|
||||
golang.org/x/crypto v0.0.0-20210421170649-83a5a9bb288b h1:7mWr3k41Qtv8XlltBkDkl8LoP3mpSgBW8BUoxtEdbXg=
|
||||
golang.org/x/crypto v0.0.0-20210421170649-83a5a9bb288b/go.mod h1:T9bdIzuCu7OtxOm1hfPfRQxPLYneinmdGuTeoZ9dtd4=
|
||||
golang.org/x/net v0.0.0-20210226172049-e18ecbb05110/go.mod h1:m0MpNAwzfU5UDzcl9v0D8zg8gWTRqZa9RBIspLL5mdg=
|
||||
golang.org/x/sys v0.0.0-20201119102817-f84b799fce68 h1:nxC68pudNYkKU6jWhgrqdreuFiOQWj1Fs7T3VrH4Pjw=
|
||||
golang.org/x/sys v0.0.0-20201119102817-f84b799fce68/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
|
||||
golang.org/x/term v0.0.0-20201126162022-7de9c90e9dd1/go.mod h1:bj7SfCRtBDWHUb9snDiAeCFNEtKQo2Wmx5Cou7ajbmo=
|
||||
golang.org/x/text v0.3.3/go.mod h1:5Zoc/QRtKVWzQhOtBMvqHzDpF6irO9z98xDceosuGiQ=
|
||||
golang.org/x/tools v0.0.0-20180917221912-90fa682c2a6e/go.mod h1:n7NCudcB/nEzxVGmLbDWY5pfWTLqBcC2KZ6jyYvM4mQ=
|
||||
gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405 h1:yhCVgyC4o1eVCa2tZl7eS0r+SDo693bJlVdllGtEeKM=
|
||||
gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
|
||||
gopkg.in/yaml.v3 v3.0.0-20200313102051-9f266ea9e77c/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=
|
||||
gopkg.in/yaml.v3 v3.0.1 h1:fxVm/GzAzEWqLHuvctI91KS9hhNmmWOoWu0XTYJS7CA=
|
||||
gopkg.in/yaml.v3 v3.0.1/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=
|
||||
|
||||
107
hn.go
Normal file
107
hn.go
Normal file
@ -0,0 +1,107 @@
|
||||
package main
|
||||
|
||||
import (
|
||||
"encoding/json"
|
||||
"errors"
|
||||
"fmt"
|
||||
"log"
|
||||
"net/http"
|
||||
"regexp"
|
||||
"strconv"
|
||||
)
|
||||
|
||||
type Story struct {
|
||||
ID int
|
||||
By string // username of author
|
||||
Time int // UNIX timestamp
|
||||
Descendants int // number of comments
|
||||
Kids []int
|
||||
Score int
|
||||
Title string
|
||||
Url string
|
||||
}
|
||||
|
||||
var (
|
||||
HackerNewsUrl = "https://news.ycombinator.com"
|
||||
HackerNewsFirebaseUrl = "https://hacker-news.firebaseio.com/v0"
|
||||
HackerNewsLinkRegexp = regexp.MustCompile(`(?:https?:\/\/)?news\.ycombinator\.com\/item\?id=([0-9]+)`)
|
||||
)
|
||||
|
||||
func FetchHackerNewsTopStories() ([]Story, error) {
|
||||
log.Println("Fetching HN top stories ...")
|
||||
|
||||
// API docs: https://github.com/HackerNews/API
|
||||
url := fmt.Sprintf("%s/topstories.json", HackerNewsFirebaseUrl)
|
||||
resp, err := http.Get(url)
|
||||
if err != nil {
|
||||
err = fmt.Errorf("error fetching HN top stories %w:", err)
|
||||
return nil, err
|
||||
}
|
||||
defer resp.Body.Close()
|
||||
|
||||
var ids []int
|
||||
err = json.NewDecoder(resp.Body).Decode(&ids)
|
||||
if err != nil {
|
||||
err = fmt.Errorf("error decoding HN top stories JSON: %w", err)
|
||||
return nil, err
|
||||
}
|
||||
|
||||
// we are only interested in the first page of top stories
|
||||
const limit = 30
|
||||
ids = ids[:limit]
|
||||
|
||||
var stories [limit]Story
|
||||
for i, id := range ids {
|
||||
story, err := FetchStoryById(id)
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
stories[i] = story
|
||||
}
|
||||
|
||||
log.Println("Fetching HN top stories ... OK")
|
||||
// Can't return [30]Story as []Story so we copy the array
|
||||
return stories[:], nil
|
||||
}
|
||||
|
||||
func FetchStoryById(id int) (Story, error) {
|
||||
log.Printf("Fetching HN story (id=%d) ...\n", id)
|
||||
|
||||
url := fmt.Sprintf("https://hacker-news.firebaseio.com/v0/item/%d.json", id)
|
||||
resp, err := http.Get(url)
|
||||
if err != nil {
|
||||
err = fmt.Errorf("error fetching HN story (id=%d): %w", id, err)
|
||||
return Story{}, err
|
||||
}
|
||||
defer resp.Body.Close()
|
||||
|
||||
var story Story
|
||||
err = json.NewDecoder(resp.Body).Decode(&story)
|
||||
if err != nil {
|
||||
err := fmt.Errorf("error decoding HN story JSON (id=%d): %w", id, err)
|
||||
return Story{}, err
|
||||
}
|
||||
|
||||
log.Printf("Fetching HN story (id=%d) ... OK\n", id)
|
||||
return story, nil
|
||||
}
|
||||
|
||||
func ParseHackerNewsLink(link string) (int, error) {
|
||||
match := HackerNewsLinkRegexp.FindStringSubmatch(link)
|
||||
if len(match) == 0 {
|
||||
return -1, errors.New("input is not a hacker news link")
|
||||
}
|
||||
id, err := strconv.Atoi(match[1])
|
||||
if err != nil {
|
||||
return -1, errors.New("integer conversion to string failed")
|
||||
}
|
||||
return id, nil
|
||||
}
|
||||
|
||||
func HackerNewsUserLink(user string) string {
|
||||
return fmt.Sprintf("%s/user?id=%s", HackerNewsUrl, user)
|
||||
}
|
||||
|
||||
func HackerNewsItemLink(id int) string {
|
||||
return fmt.Sprintf("%s/item?id=%d", HackerNewsUrl, id)
|
||||
}
|
||||
105
hn/hn.go
105
hn/hn.go
@ -1,105 +0,0 @@
|
||||
package hn
|
||||
|
||||
import (
|
||||
"encoding/json"
|
||||
"errors"
|
||||
"fmt"
|
||||
"log"
|
||||
"net/http"
|
||||
"regexp"
|
||||
"strconv"
|
||||
)
|
||||
|
||||
type Item struct {
|
||||
ID int
|
||||
By string // username of author
|
||||
Time int // UNIX timestamp
|
||||
Descendants int // number of comments
|
||||
Kids []int
|
||||
Score int
|
||||
Title string
|
||||
Url string
|
||||
}
|
||||
|
||||
var (
|
||||
hnUrl = "https://news.ycombinator.com"
|
||||
hnFirebaseUrl = "https://hacker-news.firebaseio.com/v0"
|
||||
hnLinkRegexp = regexp.MustCompile(`(?:https?:\/\/)?news\.ycombinator\.com\/item\?id=([0-9]+)`)
|
||||
)
|
||||
|
||||
func FetchTopItems() ([]Item, error) {
|
||||
log.Println("[hn] fetch top items ...")
|
||||
|
||||
// API docs: https://github.com/HackerNews/API
|
||||
url := fmt.Sprintf("%s/topstories.json", hnFirebaseUrl)
|
||||
resp, err := http.Get(url)
|
||||
if err != nil {
|
||||
return nil, fmt.Errorf("error fetching HN top stories %w:", err)
|
||||
}
|
||||
defer resp.Body.Close()
|
||||
|
||||
var ids []int
|
||||
err = json.NewDecoder(resp.Body).Decode(&ids)
|
||||
if err != nil {
|
||||
return nil, fmt.Errorf("error decoding HN top stories JSON: %w", err)
|
||||
}
|
||||
|
||||
// we are only interested in the first page of top stories
|
||||
const limit = 30
|
||||
ids = ids[:limit]
|
||||
|
||||
var stories [limit]Item
|
||||
for i, id := range ids {
|
||||
var item Item
|
||||
err := FetchItemById(id, &item)
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
stories[i] = item
|
||||
}
|
||||
|
||||
log.Println("[hn] fetch top items ... OK")
|
||||
// Can't return [30]Item as []Item so we copy the array
|
||||
return stories[:], nil
|
||||
}
|
||||
|
||||
func FetchItemById(id int, hnItem *Item) error {
|
||||
// log.Printf("[hn] fetch HN item %d ...\n", id)
|
||||
|
||||
url := fmt.Sprintf("https://hacker-news.firebaseio.com/v0/item/%d.json", id)
|
||||
resp, err := http.Get(url)
|
||||
if err != nil {
|
||||
err = fmt.Errorf("error fetching HN item %d: %w", id, err)
|
||||
return err
|
||||
}
|
||||
defer resp.Body.Close()
|
||||
|
||||
err = json.NewDecoder(resp.Body).Decode(&hnItem)
|
||||
if err != nil {
|
||||
err := fmt.Errorf("error decoding JSON for HN item %d: %w", id, err)
|
||||
return err
|
||||
}
|
||||
|
||||
// log.Printf("[hn] fetch HN item %d ... OK\n", id)
|
||||
return nil
|
||||
}
|
||||
|
||||
func ParseLink(link string) (int, error) {
|
||||
match := hnLinkRegexp.FindStringSubmatch(link)
|
||||
if len(match) == 0 {
|
||||
return -1, errors.New("not a hacker news link")
|
||||
}
|
||||
id, err := strconv.Atoi(match[1])
|
||||
if err != nil {
|
||||
return -1, errors.New("integer conversion to string failed")
|
||||
}
|
||||
return id, nil
|
||||
}
|
||||
|
||||
func UserLink(user string) string {
|
||||
return fmt.Sprintf("%s/user?id=%s", hnUrl, user)
|
||||
}
|
||||
|
||||
func ItemLink(id int) string {
|
||||
return fmt.Sprintf("%s/item?id=%d", hnUrl, id)
|
||||
}
|
||||
68
main.go
68
main.go
@ -4,74 +4,40 @@ import (
|
||||
"errors"
|
||||
"log"
|
||||
"time"
|
||||
|
||||
"github.com/ekzyis/hnbot/db"
|
||||
"github.com/ekzyis/hnbot/hn"
|
||||
sn "github.com/ekzyis/hnbot/sn"
|
||||
"github.com/joho/godotenv"
|
||||
)
|
||||
|
||||
func SyncHnItemsToDb() {
|
||||
for {
|
||||
now := time.Now()
|
||||
dur := now.Truncate(time.Minute).Add(time.Minute).Sub(now)
|
||||
log.Println("[hn] sleeping for", dur.Round(time.Second))
|
||||
time.Sleep(dur)
|
||||
|
||||
stories, err := hn.FetchTopItems()
|
||||
if err != nil {
|
||||
log.Println(err)
|
||||
continue
|
||||
}
|
||||
if err := db.SaveHnItems(&stories); err != nil {
|
||||
log.Println(err)
|
||||
continue
|
||||
}
|
||||
}
|
||||
func WaitUntilNextHour() {
|
||||
now := time.Now()
|
||||
dur := now.Truncate(time.Hour).Add(time.Hour).Sub(now)
|
||||
log.Println("sleeping for", dur.Round(time.Second))
|
||||
time.Sleep(dur)
|
||||
}
|
||||
|
||||
func main() {
|
||||
if err := godotenv.Load(); err != nil {
|
||||
log.Fatal(err)
|
||||
}
|
||||
|
||||
// fetch HN front page every minute in the background and store state in db
|
||||
go SyncHnItemsToDb()
|
||||
|
||||
// check every 15 minutes if there is now a HN item that is worth posting to SN
|
||||
for {
|
||||
var (
|
||||
filtered *[]hn.Item
|
||||
err error
|
||||
)
|
||||
|
||||
now := time.Now()
|
||||
dur := now.Truncate(time.Minute).Add(15 * time.Minute).Sub(now)
|
||||
log.Println("[sn] sleeping for", dur.Round(time.Second))
|
||||
time.Sleep(dur)
|
||||
|
||||
if filtered, err = sn.CurateContent(); err != nil {
|
||||
log.Println(err)
|
||||
stories, err := FetchHackerNewsTopStories()
|
||||
if err != nil {
|
||||
SendErrorToDiscord(err)
|
||||
WaitUntilNextHour()
|
||||
continue
|
||||
}
|
||||
|
||||
log.Printf("[sn] found %d item(s) to post\n", len(*filtered))
|
||||
filtered := CurateContentForStackerNews(&stories)
|
||||
|
||||
for _, item := range *filtered {
|
||||
_, err := sn.Post(&item, sn.PostOptions{SkipDupes: false})
|
||||
for _, story := range *filtered {
|
||||
_, err := PostStoryToStackerNews(&story, PostStoryOptions{SkipDupes: false})
|
||||
if err != nil {
|
||||
var dupesErr *sn.DupesError
|
||||
var dupesErr *DupesError
|
||||
if errors.As(err, &dupesErr) {
|
||||
log.Println(dupesErr)
|
||||
parentId := dupesErr.Dupes[0].Id
|
||||
if err := db.SaveSnItem(parentId, item.ID); err != nil {
|
||||
log.Println(err)
|
||||
}
|
||||
SendDupesErrorToDiscord(story.ID, dupesErr)
|
||||
continue
|
||||
}
|
||||
log.Println(err)
|
||||
SendErrorToDiscord(err)
|
||||
continue
|
||||
}
|
||||
log.Println("Posting to SN ... OK")
|
||||
}
|
||||
WaitUntilNextHour()
|
||||
}
|
||||
}
|
||||
|
||||
320
sn.go
Normal file
320
sn.go
Normal file
@ -0,0 +1,320 @@
|
||||
package main
|
||||
|
||||
import (
|
||||
"bytes"
|
||||
"encoding/json"
|
||||
"errors"
|
||||
"fmt"
|
||||
"log"
|
||||
"net/http"
|
||||
"time"
|
||||
|
||||
"github.com/bwmarrin/discordgo"
|
||||
"github.com/dustin/go-humanize"
|
||||
"github.com/joho/godotenv"
|
||||
"github.com/namsral/flag"
|
||||
)
|
||||
|
||||
type GraphQLPayload struct {
|
||||
Query string `json:"query"`
|
||||
Variables map[string]interface{} `json:"variables,omitempty"`
|
||||
}
|
||||
|
||||
type GraphQLError struct {
|
||||
Message string `json:"message"`
|
||||
}
|
||||
|
||||
type User struct {
|
||||
Name string `json:"name"`
|
||||
}
|
||||
|
||||
type Dupe struct {
|
||||
Id int `json:"id,string"`
|
||||
Url string `json:"url"`
|
||||
Title string `json:"title"`
|
||||
User User `json:"user"`
|
||||
CreatedAt time.Time `json:"createdAt"`
|
||||
Sats int `json:"sats"`
|
||||
NComments int `json:"ncomments"`
|
||||
}
|
||||
|
||||
type DupesResponse struct {
|
||||
Errors []GraphQLError `json:"errors"`
|
||||
Data struct {
|
||||
Dupes []Dupe `json:"dupes"`
|
||||
} `json:"data"`
|
||||
}
|
||||
|
||||
type DupesError struct {
|
||||
Url string
|
||||
Dupes []Dupe
|
||||
}
|
||||
|
||||
func (e *DupesError) Error() string {
|
||||
return fmt.Sprintf("found %d dupes for %s", len(e.Dupes), e.Url)
|
||||
}
|
||||
|
||||
type Comment struct {
|
||||
Id int `json:"id,string"`
|
||||
Text string `json:"text"`
|
||||
User User `json:"user"`
|
||||
Comments []Comment `json:"comments"`
|
||||
}
|
||||
|
||||
type CreateCommentsResponse struct {
|
||||
Errors []GraphQLError `json:"errors"`
|
||||
Data struct {
|
||||
CreateComment Comment `json:"createComment"`
|
||||
} `json:"data"`
|
||||
}
|
||||
|
||||
type Item struct {
|
||||
Id int `json:"id,string"`
|
||||
Title string `json:"title"`
|
||||
Url string `json:"url"`
|
||||
Sats int `json:"sats"`
|
||||
CreatedAt time.Time `json:"createdAt"`
|
||||
Comments []Comment `json:"comments"`
|
||||
NComments int `json:"ncomments"`
|
||||
}
|
||||
|
||||
type UpsertLinkResponse struct {
|
||||
Errors []GraphQLError `json:"errors"`
|
||||
Data struct {
|
||||
UpsertLink Item `json:"upsertLink"`
|
||||
} `json:"data"`
|
||||
}
|
||||
|
||||
type ItemsResponse struct {
|
||||
Errors []GraphQLError `json:"errors"`
|
||||
Data struct {
|
||||
Items struct {
|
||||
Items []Item `json:"items"`
|
||||
Cursor string `json:"cursor"`
|
||||
} `json:"items"`
|
||||
} `json:"data"`
|
||||
}
|
||||
|
||||
var (
|
||||
StackerNewsUrl = "https://stacker.news"
|
||||
SnApiUrl = "https://stacker.news/api/graphql"
|
||||
SnAuthCookie string
|
||||
)
|
||||
|
||||
func init() {
|
||||
err := godotenv.Load()
|
||||
if err != nil {
|
||||
log.Fatal("error loading .env file")
|
||||
}
|
||||
flag.StringVar(&SnAuthCookie, "SN_AUTH_COOKIE", "", "Cookie required for authorizing requests to stacker.news/api/graphql")
|
||||
flag.Parse()
|
||||
if SnAuthCookie == "" {
|
||||
log.Fatal("SN_AUTH_COOKIE not set")
|
||||
}
|
||||
}
|
||||
|
||||
func MakeStackerNewsRequest(body GraphQLPayload) (*http.Response, error) {
|
||||
bodyJSON, err := json.Marshal(body)
|
||||
if err != nil {
|
||||
err = fmt.Errorf("error encoding SN payload: %w", err)
|
||||
return nil, err
|
||||
}
|
||||
|
||||
req, err := http.NewRequest("POST", SnApiUrl, bytes.NewBuffer(bodyJSON))
|
||||
if err != nil {
|
||||
err = fmt.Errorf("error preparing SN request: %w", err)
|
||||
return nil, err
|
||||
}
|
||||
req.Header.Set("Content-Type", "application/json")
|
||||
req.Header.Set("Cookie", SnAuthCookie)
|
||||
|
||||
client := http.DefaultClient
|
||||
resp, err := client.Do(req)
|
||||
if err != nil {
|
||||
err = fmt.Errorf("error posting SN payload: %w", err)
|
||||
return nil, err
|
||||
}
|
||||
|
||||
return resp, nil
|
||||
}
|
||||
|
||||
func CurateContentForStackerNews(stories *[]Story) *[]Story {
|
||||
// TODO: filter by relevance
|
||||
|
||||
slice := (*stories)[0:1]
|
||||
return &slice
|
||||
}
|
||||
|
||||
func CheckForErrors(graphqlErrors []GraphQLError) error {
|
||||
if len(graphqlErrors) > 0 {
|
||||
errorMsg, marshalErr := json.Marshal(graphqlErrors)
|
||||
if marshalErr != nil {
|
||||
return marshalErr
|
||||
}
|
||||
return errors.New(fmt.Sprintf("error fetching SN dupes: %s", string(errorMsg)))
|
||||
}
|
||||
return nil
|
||||
}
|
||||
|
||||
func FetchStackerNewsDupes(url string) (*[]Dupe, error) {
|
||||
log.Printf("Fetching SN dupes (url=%s) ...\n", url)
|
||||
|
||||
body := GraphQLPayload{
|
||||
Query: `
|
||||
query Dupes($url: String!) {
|
||||
dupes(url: $url) {
|
||||
id
|
||||
url
|
||||
title
|
||||
user {
|
||||
name
|
||||
}
|
||||
createdAt
|
||||
sats
|
||||
ncomments
|
||||
}
|
||||
}`,
|
||||
Variables: map[string]interface{}{
|
||||
"url": url,
|
||||
},
|
||||
}
|
||||
resp, err := MakeStackerNewsRequest(body)
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
defer resp.Body.Close()
|
||||
|
||||
var dupesResp DupesResponse
|
||||
err = json.NewDecoder(resp.Body).Decode(&dupesResp)
|
||||
if err != nil {
|
||||
err = fmt.Errorf("error decoding SN dupes: %w", err)
|
||||
return nil, err
|
||||
}
|
||||
err = CheckForErrors(dupesResp.Errors)
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
|
||||
log.Printf("Fetching SN dupes (url=%s) ... OK\n", url)
|
||||
return &dupesResp.Data.Dupes, nil
|
||||
}
|
||||
|
||||
type PostStoryOptions struct {
|
||||
SkipDupes bool
|
||||
}
|
||||
|
||||
func PostStoryToStackerNews(story *Story, options PostStoryOptions) (int, error) {
|
||||
log.Printf("Posting to SN (url=%s) ...\n", story.Url)
|
||||
|
||||
if !options.SkipDupes {
|
||||
dupes, err := FetchStackerNewsDupes(story.Url)
|
||||
if err != nil {
|
||||
return -1, err
|
||||
}
|
||||
if len(*dupes) > 0 {
|
||||
return -1, &DupesError{story.Url, *dupes}
|
||||
}
|
||||
}
|
||||
|
||||
body := GraphQLPayload{
|
||||
Query: `
|
||||
mutation upsertLink($url: String!, $title: String!, $sub: String!) {
|
||||
upsertLink(url: $url, title: $title, sub: $sub) {
|
||||
id
|
||||
}
|
||||
}`,
|
||||
Variables: map[string]interface{}{
|
||||
"url": story.Url,
|
||||
"title": story.Title,
|
||||
"sub": "bitcoin",
|
||||
},
|
||||
}
|
||||
resp, err := MakeStackerNewsRequest(body)
|
||||
if err != nil {
|
||||
return -1, err
|
||||
}
|
||||
defer resp.Body.Close()
|
||||
|
||||
var upsertLinkResp UpsertLinkResponse
|
||||
err = json.NewDecoder(resp.Body).Decode(&upsertLinkResp)
|
||||
if err != nil {
|
||||
err = fmt.Errorf("error decoding SN upsertLink: %w", err)
|
||||
return -1, err
|
||||
}
|
||||
err = CheckForErrors(upsertLinkResp.Errors)
|
||||
if err != nil {
|
||||
return -1, err
|
||||
}
|
||||
parentId := upsertLinkResp.Data.UpsertLink.Id
|
||||
|
||||
log.Printf("Posting to SN (url=%s) ... OK \n", story.Url)
|
||||
SendStackerNewsEmbedToDiscord(story.Title, parentId)
|
||||
|
||||
comment := fmt.Sprintf(
|
||||
"This link was posted by [%s](%s) %s on [HN](%s). It received %d points and %d comments.",
|
||||
story.By,
|
||||
HackerNewsUserLink(story.By),
|
||||
humanize.Time(time.Unix(int64(story.Time), 0)),
|
||||
HackerNewsItemLink(story.ID),
|
||||
story.Score, story.Descendants,
|
||||
)
|
||||
CommentStackerNewsPost(comment, parentId)
|
||||
return parentId, nil
|
||||
}
|
||||
|
||||
func StackerNewsItemLink(id int) string {
|
||||
return fmt.Sprintf("https://stacker.news/items/%d", id)
|
||||
}
|
||||
|
||||
func CommentStackerNewsPost(text string, parentId int) (*http.Response, error) {
|
||||
log.Printf("Commenting SN post (parentId=%d) ...\n", parentId)
|
||||
|
||||
body := GraphQLPayload{
|
||||
Query: `
|
||||
mutation createComment($text: String!, $parentId: ID!) {
|
||||
createComment(text: $text, parentId: $parentId) {
|
||||
id
|
||||
}
|
||||
}`,
|
||||
Variables: map[string]interface{}{
|
||||
"text": text,
|
||||
"parentId": parentId,
|
||||
},
|
||||
}
|
||||
resp, err := MakeStackerNewsRequest(body)
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
defer resp.Body.Close()
|
||||
|
||||
var createCommentsResp CreateCommentsResponse
|
||||
err = json.NewDecoder(resp.Body).Decode(&createCommentsResp)
|
||||
if err != nil {
|
||||
err = fmt.Errorf("error decoding SN upsertLink: %w", err)
|
||||
return nil, err
|
||||
}
|
||||
err = CheckForErrors(createCommentsResp.Errors)
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
|
||||
log.Printf("Commenting SN post (parentId=%d) ... OK\n", parentId)
|
||||
return resp, nil
|
||||
}
|
||||
|
||||
func SendStackerNewsEmbedToDiscord(title string, id int) {
|
||||
Timestamp := time.Now().Format(time.RFC3339)
|
||||
url := StackerNewsItemLink(id)
|
||||
color := 0xffc107
|
||||
embed := discordgo.MessageEmbed{
|
||||
Title: title,
|
||||
URL: url,
|
||||
Color: color,
|
||||
Footer: &discordgo.MessageEmbedFooter{
|
||||
Text: "Stacker News",
|
||||
IconURL: "https://stacker.news/favicon.png",
|
||||
},
|
||||
Timestamp: Timestamp,
|
||||
}
|
||||
SendEmbedToDiscord(&embed)
|
||||
}
|
||||
102
sn/sn.go
102
sn/sn.go
@ -1,102 +0,0 @@
|
||||
package sn
|
||||
|
||||
import (
|
||||
"database/sql"
|
||||
"fmt"
|
||||
"log"
|
||||
"time"
|
||||
|
||||
"github.com/dustin/go-humanize"
|
||||
"github.com/ekzyis/hnbot/db"
|
||||
"github.com/ekzyis/hnbot/hn"
|
||||
sn "github.com/ekzyis/snappy"
|
||||
)
|
||||
|
||||
type DupesError = sn.DupesError
|
||||
|
||||
func CurateContent() (*[]hn.Item, error) {
|
||||
var (
|
||||
rows *sql.Rows
|
||||
err error
|
||||
)
|
||||
if rows, err = db.Query(`
|
||||
SELECT t.id, time, title, url, author, score, ndescendants
|
||||
FROM (
|
||||
SELECT id, MIN(created_at) AS start, MAX(created_at) AS end
|
||||
FROM hn_items
|
||||
WHERE rank = 1 AND id NOT IN (SELECT hn_id FROM sn_items) AND length(title) >= 5
|
||||
GROUP BY id
|
||||
HAVING unixepoch(end) - unixepoch(start) >= 3600
|
||||
ORDER BY time ASC
|
||||
LIMIT 1
|
||||
) t JOIN hn_items ON t.id = hn_items.id AND t.end = hn_items.created_at;
|
||||
`); err != nil {
|
||||
err = fmt.Errorf("error querying hn_items: %w", err)
|
||||
return nil, err
|
||||
}
|
||||
defer rows.Close()
|
||||
|
||||
var items []hn.Item
|
||||
for rows.Next() {
|
||||
var item hn.Item
|
||||
if err = rows.Scan(&item.ID, &item.Time, &item.Title, &item.Url, &item.By, &item.Score, &item.Descendants); err != nil {
|
||||
err = fmt.Errorf("error scanning hn_items: %w", err)
|
||||
return nil, err
|
||||
}
|
||||
items = append(items, item)
|
||||
}
|
||||
if err = rows.Err(); err != nil {
|
||||
err = fmt.Errorf("error iterating hn_items: %w", err)
|
||||
return nil, err
|
||||
}
|
||||
return &items, nil
|
||||
}
|
||||
|
||||
type PostOptions struct {
|
||||
SkipDupes bool
|
||||
}
|
||||
|
||||
func Post(item *hn.Item, options PostOptions) (int, error) {
|
||||
c := sn.NewClient()
|
||||
url := item.Url
|
||||
if url == "" {
|
||||
url = hn.ItemLink(item.ID)
|
||||
}
|
||||
log.Printf("post to SN: %s ...\n", url)
|
||||
|
||||
if !options.SkipDupes {
|
||||
dupes, err := c.Dupes(url)
|
||||
if err != nil {
|
||||
return -1, err
|
||||
}
|
||||
if len(*dupes) > 0 {
|
||||
return -1, &sn.DupesError{Url: url, Dupes: *dupes}
|
||||
}
|
||||
}
|
||||
|
||||
title := item.Title
|
||||
if len(title) > 80 {
|
||||
title = title[0:80]
|
||||
}
|
||||
|
||||
comment := fmt.Sprintf(
|
||||
"This link was posted by [%s](%s) %s on [HN](%s). It received %d points and %d comments.",
|
||||
item.By,
|
||||
hn.UserLink(item.By),
|
||||
humanize.Time(time.Unix(int64(item.Time), 0)),
|
||||
hn.ItemLink(item.ID),
|
||||
item.Score, item.Descendants,
|
||||
)
|
||||
|
||||
parentId, err := c.PostLink(url, title, comment, "tech")
|
||||
if err != nil {
|
||||
return -1, fmt.Errorf("error posting link: %w", err)
|
||||
}
|
||||
|
||||
log.Printf("post to SN: %s ... OK \n", url)
|
||||
if err := db.SaveSnItem(parentId, item.ID); err != nil {
|
||||
return -1, err
|
||||
}
|
||||
|
||||
return parentId, nil
|
||||
}
|
||||
18
sn_test.go
Normal file
18
sn_test.go
Normal file
@ -0,0 +1,18 @@
|
||||
package main
|
||||
|
||||
import (
|
||||
"log"
|
||||
"testing"
|
||||
|
||||
"github.com/stretchr/testify/assert"
|
||||
)
|
||||
|
||||
func TestFetchDupes(t *testing.T) {
|
||||
// TODO: mock HTTP request
|
||||
url := "https://en.wikipedia.org/wiki/Dishwasher_salmon"
|
||||
dupes, err := FetchStackerNewsDupes(url)
|
||||
if err != nil {
|
||||
log.Fatal(err)
|
||||
}
|
||||
assert.NotEmpty(t, *dupes, "Expected at least one duplicate")
|
||||
}
|
||||
Loading…
x
Reference in New Issue
Block a user