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94 lines
2.1 KiB
Go
94 lines
2.1 KiB
Go
package telegramnotifier
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import (
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"fmt"
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log "github.com/sirupsen/logrus"
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tb "gopkg.in/tucnak/telebot.v2"
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)
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type Notifier struct {
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Bot *tb.Bot
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chatUser *tb.User
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channel string
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}
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type NotifyOption func(notifier *Notifier)
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// start bot daemon
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func New(bot *tb.Bot, authToken string, options ...NotifyOption) *Notifier {
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notifier := &Notifier{
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chatUser: &tb.User{},
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Bot: bot,
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}
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for _, o := range options {
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o(notifier)
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}
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bot.Handle("/help", func(m *tb.Message) {
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helpMsg := `
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help - print help message
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auth - authorize current telegram user to access telegram bot with authToken. ex. /auth my-token
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info - print information about current chat
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`
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bot.Send(m.Sender, helpMsg)
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})
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// auth check authToken and then set sender id
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bot.Handle("/auth", func(m *tb.Message) {
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log.Info("Receive message: ", m) //debug
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if m.Payload == authToken {
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notifier.chatUser = m.Sender
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bot.Send(m.Sender, "User authorized")
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} else {
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bot.Send(m.Sender, "Error: User authorization failed. Auth token does not match!")
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}
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})
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bot.Handle("/info", func(m *tb.Message) {
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if m.Sender.ID == notifier.chatUser.ID {
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bot.Send(notifier.chatUser,
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fmt.Sprintf("Welcome! your username: %s, user ID: %d",
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notifier.chatUser.Username,
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notifier.chatUser.ID,
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))
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} else {
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log.Warningf("Incorrect user tried to access bot! sender username: %s id: %d", m.Sender.Username, m.Sender.ID)
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}
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})
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notifier.Bot = bot
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return notifier
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}
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func (n *Notifier) Notify(format string, args ...interface{}) {
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n.NotifyTo(n.channel, format, args...)
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}
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func (n *Notifier) NotifyTo(channel, format string, args ...interface{}) {
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if n.chatUser.ID == 0 {
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log.Warningf("Telegram bot has no authenticated user. Skip notification")
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return
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}
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var telegramArgsOffset = -1
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var nonTelegramArgs = args
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if telegramArgsOffset > -1 {
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nonTelegramArgs = args[:telegramArgsOffset]
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}
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log.Infof(format, nonTelegramArgs...)
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_, err := n.Bot.Send(n.chatUser, fmt.Sprintf(format, nonTelegramArgs...))
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if err != nil {
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log.WithError(err).
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WithField("chatUser", n.chatUser).
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Errorf("telegram error: %s", err.Error())
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}
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return
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}
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