add delete function for channel heler

bots/modules/channel_helper.py

@@ -9,7 +9,7 @@ import requests
 from PIL import Image
 from django.db import models
 from telegram import Update, Bot
-from telegram.ext import Dispatcher, CallbackContext, MessageHandler, Filters
+from telegram.ext import Dispatcher, CallbackContext, MessageHandler, Filters, CommandHandler
 from jsonrpc import Dispatcher as RPCDispatcher
 from djconfig import config
 
@@ -71,7 +71,7 @@ class ChannelHelperBotModuleConfig(TelegramBotModuleConfig):
 
         m = update.effective_message
         bot = ctx.bot
-        i = QueuedItem(config=self)
+        i = QueuedItem(config=self, message_id=m.message_id)
         if hasattr(m, 'audio') and m.audio:
             a = m.audio
             i.type = 'audio'
@@ -121,8 +121,19 @@ class ChannelHelperBotModuleConfig(TelegramBotModuleConfig):
         else:
             i.send(bot)
 
+    def handle_delete(self, update: Update, ctx: CallbackContext):
+        if update.effective_message.chat_id != self.chat_id:
+            return
+        reply_to_id = update.effective_message.reply_to_message.message_id
+        try:
+            msg = QueuedItem.objects.get(message_id=reply_to_id)
+            msg.delete()
+        except QueuedItem.DoesNotExist:
+            update.effective_message.reply_text('Deleted')
+
     def build_dispatcher(self, dispatcher: Dispatcher):
         dispatcher.add_handler(MessageHandler(Filters.private, self.handle_message))
+        dispatcher.add_handler(CommandHandler(['delete', 'del', 'remove', 'rem'], self.handle_delete, Filters.reply))
         return dispatcher
 
 
@@ -130,6 +141,7 @@ class QueuedItem(models.Model):
     config = models.ForeignKey(ChannelHelperBotModuleConfig, on_delete=models.CASCADE, related_name='queued_items')
     type = models.CharField(max_length=12)
     args = models.TextField()
+    message_id = models.PositiveBigIntegerField(default=None, db_index=True)
 
     def send(self, bot: Bot):
         getattr(bot, 'send_' + self.type)(self.config.chat_id, *json.loads(self.args))