mirror of
https://github.com/hrfee/jfa-go.git
synced 2024-11-13 22:00:10 +00:00
280 lines
8.3 KiB
Go
280 lines
8.3 KiB
Go
package main
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import (
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"fmt"
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"math/rand"
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"strings"
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"time"
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tg "github.com/go-telegram-bot-api/telegram-bot-api"
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"github.com/timshannon/badgerhold/v4"
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)
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const (
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VERIF_TOKEN_EXPIRY_SEC = 10 * 60
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)
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type TelegramVerifiedToken struct {
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ChatID int64
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Username string
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JellyfinID string // optional, for ensuring a user-requested change is only accessed by them.
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}
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// VerifToken stores details about a pending user verification token.
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type VerifToken struct {
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Expiry time.Time
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JellyfinID string // optional, for ensuring a user-requested change is only accessed by them.
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}
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type TelegramDaemon struct {
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Stopped bool
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ShutdownChannel chan string
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bot *tg.BotAPI
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username string
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tokens map[string]VerifToken // Map of pins to tokens.
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verifiedTokens map[string]TelegramVerifiedToken // Map of token pins to the responsible ChatID+Username.
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languages map[int64]string // Store of languages for chatIDs. Added to on first interaction, and loaded from app.storage.telegram on start.
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link string
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app *appContext
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}
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func newTelegramDaemon(app *appContext) (*TelegramDaemon, error) {
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token := app.config.Section("telegram").Key("token").String()
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if token == "" {
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return nil, fmt.Errorf("token was blank")
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}
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bot, err := tg.NewBotAPI(token)
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if err != nil {
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return nil, err
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}
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td := &TelegramDaemon{
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ShutdownChannel: make(chan string),
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bot: bot,
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username: bot.Self.UserName,
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tokens: map[string]VerifToken{},
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verifiedTokens: map[string]TelegramVerifiedToken{},
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languages: map[int64]string{},
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link: "https://t.me/" + bot.Self.UserName,
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app: app,
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}
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for _, user := range app.storage.GetTelegram() {
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if user.Lang != "" {
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td.languages[user.ChatID] = user.Lang
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}
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}
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return td, nil
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}
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func genAuthToken() string {
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rand.Seed(time.Now().UnixNano())
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pin := make([]rune, 8)
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for i := range pin {
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if (i+1)%3 == 0 {
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pin[i] = '-'
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} else {
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pin[i] = runes[rand.Intn(len(runes))]
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}
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}
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return string(pin)
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}
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var runes = []rune("ABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789")
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// NewAuthToken generates an 8-character pin in the form "A1-2B-CD".
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func (t *TelegramDaemon) NewAuthToken() string {
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pin := genAuthToken()
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t.tokens[pin] = VerifToken{Expiry: time.Now().Add(VERIF_TOKEN_EXPIRY_SEC * time.Second), JellyfinID: ""}
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return pin
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}
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// NewAssignedAuthToken generates an 8-character pin in the form "A1-2B-CD",
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// and assigns it for access only with the given Jellyfin ID.
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func (t *TelegramDaemon) NewAssignedAuthToken(id string) string {
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pin := genAuthToken()
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t.tokens[pin] = VerifToken{Expiry: time.Now().Add(VERIF_TOKEN_EXPIRY_SEC * time.Second), JellyfinID: id}
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return pin
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}
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func (t *TelegramDaemon) run() {
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t.app.info.Println("Starting Telegram bot daemon")
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u := tg.NewUpdate(0)
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u.Timeout = 60
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updates, err := t.bot.GetUpdatesChan(u)
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if err != nil {
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t.app.err.Printf("Failed to start Telegram daemon: %v", err)
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telegramEnabled = false
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return
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}
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for {
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var upd tg.Update
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select {
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case upd = <-updates:
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if upd.Message == nil {
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continue
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}
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sects := strings.Split(upd.Message.Text, " ")
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if len(sects) == 0 {
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continue
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}
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lang := t.app.storage.lang.chosenTelegramLang
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storedLang, ok := t.languages[upd.Message.Chat.ID]
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if !ok {
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found := false
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for code := range t.app.storage.lang.Telegram {
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if code[:2] == upd.Message.From.LanguageCode {
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lang = code
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found = true
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break
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}
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}
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if found {
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t.languages[upd.Message.Chat.ID] = lang
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}
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} else {
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lang = storedLang
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}
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switch msg := sects[0]; msg {
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case "/start":
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t.commandStart(&upd, sects, lang)
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continue
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case "/lang":
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t.commandLang(&upd, sects, lang)
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continue
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default:
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t.commandPIN(&upd, sects, lang)
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}
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case <-t.ShutdownChannel:
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t.bot.StopReceivingUpdates()
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t.ShutdownChannel <- "Down"
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return
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}
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}
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}
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func (t *TelegramDaemon) Reply(upd *tg.Update, content string) error {
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msg := tg.NewMessage((*upd).Message.Chat.ID, content)
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_, err := t.bot.Send(msg)
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return err
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}
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func (t *TelegramDaemon) QuoteReply(upd *tg.Update, content string) error {
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msg := tg.NewMessage((*upd).Message.Chat.ID, content)
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msg.ReplyToMessageID = (*upd).Message.MessageID
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_, err := t.bot.Send(msg)
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return err
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}
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var escapedChars = []string{"_", "\\_", "*", "\\*", "[", "\\[", "]", "\\]", "(", "\\(", ")", "\\)", "~", "\\~", "`", "\\`", ">", "\\>", "#", "\\#", "+", "\\+", "-", "\\-", "=", "\\=", "|", "\\|", "{", "\\{", "}", "\\}", ".", "\\.", "!", "\\!"}
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var escaper = strings.NewReplacer(escapedChars...)
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// Send will send a telegram message to a list of chat IDs. message.text is used if no markdown is given.
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func (t *TelegramDaemon) Send(message *Message, ID ...int64) error {
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for _, id := range ID {
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var msg tg.MessageConfig
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if message.Markdown == "" {
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msg = tg.NewMessage(id, message.Text)
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} else {
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text := escaper.Replace(message.Markdown)
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msg = tg.NewMessage(id, text)
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msg.ParseMode = "MarkdownV2"
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}
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_, err := t.bot.Send(msg)
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if 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 (t *TelegramDaemon) Shutdown() {
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t.Stopped = true
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t.ShutdownChannel <- "Down"
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<-t.ShutdownChannel
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close(t.ShutdownChannel)
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}
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func (t *TelegramDaemon) commandStart(upd *tg.Update, sects []string, lang string) {
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content := t.app.storage.lang.Telegram[lang].Strings.get("startMessage") + "\n"
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content += t.app.storage.lang.Telegram[lang].Strings.template("languageMessage", tmpl{"command": "/lang"})
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err := t.Reply(upd, content)
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if err != nil {
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t.app.err.Printf("Telegram: Failed to send message to \"%s\": %v", upd.Message.From.UserName, err)
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}
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}
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func (t *TelegramDaemon) commandLang(upd *tg.Update, sects []string, lang string) {
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if len(sects) == 1 {
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list := "/lang `<lang>`\n"
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for code := range t.app.storage.lang.Telegram {
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list += fmt.Sprintf("`%s`: %s\n", code, t.app.storage.lang.Telegram[code].Meta.Name)
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}
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err := t.Reply(upd, list)
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if err != nil {
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t.app.err.Printf("Telegram: Failed to send message to \"%s\": %v", upd.Message.From.UserName, err)
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}
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return
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}
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if _, ok := t.app.storage.lang.Telegram[sects[1]]; ok {
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t.languages[upd.Message.Chat.ID] = sects[1]
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for _, user := range t.app.storage.GetTelegram() {
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if user.ChatID == upd.Message.Chat.ID {
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user.Lang = sects[1]
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t.app.storage.SetTelegramKey(user.JellyfinID, user)
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break
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}
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}
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}
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}
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func (t *TelegramDaemon) commandPIN(upd *tg.Update, sects []string, lang string) {
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token, ok := t.tokens[upd.Message.Text]
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if !ok || time.Now().After(token.Expiry) {
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err := t.QuoteReply(upd, t.app.storage.lang.Telegram[lang].Strings.get("invalidPIN"))
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if err != nil {
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t.app.err.Printf("Telegram: Failed to send message to \"%s\": %v", upd.Message.From.UserName, err)
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}
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delete(t.tokens, upd.Message.Text)
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return
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}
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err := t.QuoteReply(upd, t.app.storage.lang.Telegram[lang].Strings.get("pinSuccess"))
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if err != nil {
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t.app.err.Printf("Telegram: Failed to send message to \"%s\": %v", upd.Message.From.UserName, err)
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}
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t.verifiedTokens[upd.Message.Text] = TelegramVerifiedToken{
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ChatID: upd.Message.Chat.ID,
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Username: upd.Message.Chat.UserName,
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JellyfinID: token.JellyfinID,
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}
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delete(t.tokens, upd.Message.Text)
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}
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// TokenVerified returns whether or not a token with the given PIN has been verified, and the token itself.
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func (t *TelegramDaemon) TokenVerified(pin string) (token TelegramVerifiedToken, ok bool) {
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token, ok = t.verifiedTokens[pin]
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// delete(t.verifiedTokens, pin)
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return
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}
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// AssignedTokenVerified returns whether or not a token with the given PIN has been verified, and the token itself.
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// Returns false if the given Jellyfin ID does not match the one in the token.
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func (t *TelegramDaemon) AssignedTokenVerified(pin string, jfID string) (token TelegramVerifiedToken, ok bool) {
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token, ok = t.verifiedTokens[pin]
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if ok && token.JellyfinID != jfID {
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ok = false
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}
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// delete(t.verifiedTokens, pin)
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return
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}
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// UserExists returns whether or not a user with the given username exists.
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func (t *TelegramDaemon) UserExists(username string) bool {
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c, err := t.app.storage.db.Count(&TelegramUser{}, badgerhold.Where("Username").Eq(username))
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return err != nil || c > 0
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}
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// DeleteVerifiedToken removes the token with the given PIN.
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func (t *TelegramDaemon) DeleteVerifiedToken(pin string) {
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delete(t.verifiedTokens, pin)
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}
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