103 lines
2.8 KiB
Go
103 lines
2.8 KiB
Go
package moon
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import (
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"fmt"
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"time"
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"github.com/NicoNex/echotron/v3"
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)
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// newChatMember parses one of types ChatMemberUpdated event.
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// https://core.telegram.org/bots/api#chatmemberupdated
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func newChatMember(msg *echotron.Update) {
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var (
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joinTimestampString string
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)
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// Spam bots come with these attributes.
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// msg.ChatMember.NewChatMember.Status = "member"
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// msg.ChatMember.OldChatMember.User != nil
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// msg.ChatMember.OldChatMember.Status = "left"
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Log.Infof(
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"User %s %s (username = %s, id = %d) in chat %s %s (%d) now %s was %s",
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msg.ChatMember.NewChatMember.User.FirstName,
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msg.ChatMember.NewChatMember.User.LastName,
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msg.ChatMember.NewChatMember.User.Username,
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msg.ChatMember.NewChatMember.User.ID,
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msg.ChatMember.Chat.Type,
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msg.ChatMember.Chat.Title,
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msg.ChatMember.Chat.ID,
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msg.ChatMember.NewChatMember.Status,
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msg.ChatMember.OldChatMember.Status,
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)
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// To avoid race conditions.
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// To really avoid them, this particular event and newChatMember handler must be serialized via channel.
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time.Sleep(10 * time.Second)
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Log.Info("Processing UpdateUser event")
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// Try to get timestamp when this member joined to chat
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joinTimestampString = Cfg.GetValue(
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"NewMembers",
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fmt.Sprintf("%d", msg.ChatMember.Chat.ID),
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fmt.Sprintf("%d", msg.ChatMember.NewChatMember.User.ID),
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)
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// Нормальный человек, который зашёл с правильным ивентом, через message с атрибутом new_chat_members
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// https://core.telegram.org/bots/api#message
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if joinTimestampString != "" {
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return
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}
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// Check some other attributes.
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if msg.ChatMember.OldChatMember.Status == "left" && msg.ChatMember.NewChatMember.Status == "member" {
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leftTimestampString := Cfg.GetValue(
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"LeftMembers",
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fmt.Sprintf("%d", msg.ChatMember.Chat.ID),
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fmt.Sprintf("%d", msg.ChatMember.NewChatMember.User.ID),
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)
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// Yes, this member definitely left chat at some point, we have no question to him/her.
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if leftTimestampString != "" {
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return
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}
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// Very suspicious coincedence, looks like we've got bot here.
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banDate := time.Now().Unix() + 45
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if res, err := Tg.BanChatMember(
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msg.ChatID(),
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msg.ChatMember.NewChatMember.User.ID,
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&echotron.BanOptions{
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UntilDate: int(banDate),
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},
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); err != nil {
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Log.Errorf(
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"Unable to ban user with id %d in chat %s: %s",
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msg.ChatMember.NewChatMember.User.ID,
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msg.ChatID(),
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res.Description,
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)
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} else {
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if !res.Ok {
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Log.Errorf(
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"Unable to ban user with id %d in chat %s: %s",
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msg.ChatMember.NewChatMember.User.ID,
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msg.ChatID(),
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res.Description,
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)
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} else {
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Log.Infof(
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"Banned user with id %d in chat %s.",
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msg.ChatMember.NewChatMember.User.ID,
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msg.ChatID(),
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)
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}
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}
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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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