0c34b6e781
- Remove CAS, as it no longer works for us - Remove other checks - Implement 15 minute greet timeout check - Fix chat logos - Ditch thirdparty logger, use stdlib log facility wrapper for logging
112 lines
3.3 KiB
Go
112 lines
3.3 KiB
Go
package moon
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import (
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"bunny-bot/internal/elog"
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"bunny-bot/internal/mylog"
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"github.com/NicoNex/echotron/v3"
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"github.com/davecgh/go-spew/spew"
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)
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// Telegram main goroutine that implements bot.
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//
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// It blocks until a termination signal stops it, so the update listener can be
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// shut down in a defined order rather than simply abandoned when the process
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// exits.
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func Telegram(cfg MyConfig) {
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// A signal can arrive during startup; then this must not start at all.
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if !startWorker() {
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mylog.Info("Telegram not started: shutdown already in progress")
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return
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}
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defer stopWorker()
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Tg = echotron.NewAPI(cfg.Token)
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mylog.Info("Starting api update poller loop")
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// The sweeper calls the API too, so it may only start once Tg exists.
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mylog.Info("Starting greeting sweeper periodic task")
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go SweepGreetings()
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updates := echotron.PollingUpdatesOptions(cfg.Token, true, echotron.UpdateOptions{
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AllowedUpdates: allowedUpdates,
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})
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for {
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select {
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// Stop between updates, never inside one: the handler currently running
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// finishes, so nothing is left half-processed when we return.
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case <-stopRequested:
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mylog.Info("Telegram update listener stopped")
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return
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case u, ok := <-updates:
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if !ok {
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mylog.Info("Telegram update poller ended")
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return
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}
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telegramMsgParser(u)
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}
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}
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}
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// telegramMsgParser parses events generated by echotron.
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func telegramMsgParser(msg *echotron.Update) {
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// The one place an update enters the program, and therefore the one place an
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// entity with no id is caught. Everything downstream — the caches, the sweeper,
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// the bans — may then assume the ids it holds are real.
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if !usableUpdate(msg) {
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reportBrokenUpdate(msg)
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return
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}
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switch {
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// Membership status changes: joins, leaves, bans, promotions. Logged only —
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// moderation is the sweeper's job, on a timer, not the dispatcher's.
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//
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// This also catches the membership updates caused by our own bans, so every
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// ban leaves a second record in the chat log.
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case msg.ChatMember != nil:
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elog.LogUserStatus(msg.ChatMember)
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// New members entered to chat. Checked before the text case so that a
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// join service message is never mistaken for ordinary chatter.
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case msg.Message != nil && msg.Message.NewChatMembers != nil:
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newChatMembers(msg)
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// Ordinary text messages, used as greeting answers.
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case msg.Message != nil && msg.Message.Text != "":
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textMessage(msg)
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// Everything else that is still a message: a photo with no caption, a
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// sticker, a location, a leave, a title change. Logged, and deliberately NOT
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// recorded as a greeting answer — an attachment is not an introduction, and
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// letting one satisfy the detector would be a one-key bypass for a spammer.
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//
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// The condition is deliberately just "there is a message": elog already
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// renders every media and service field, and already writes nothing for a
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// message with no describable content, so emptiness is its decision to make.
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// Testing for a field being non-empty here is what lost these messages.
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case msg.Message != nil:
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logOnlyMessage(msg)
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// An edit revises a message already recorded, so it is a chat-log event
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// rather than a moderation one.
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case msg.EditedMessage != nil:
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elog.LogEditedMessage(msg.EditedMessage)
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default:
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mylog.Debug(spew.Sdump(msg))
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}
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}
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/* vim: set ft=go noet ai ts=4 sw=4 sts=4: */
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