Added Telegram Topic Thread ID Support

apprise/plugins/NotifyTelegram.py

@@ -312,13 +312,18 @@ class NotifyTelegram(NotifyBase):
             'type': 'bool',
             'default': False,
         },
+        'topic': {
+            'name': _('Topic Thread ID'),
+            'type': 'int',
+        },
         'to': {
             'alias_of': 'targets',
         },
     })
 
     def __init__(self, bot_token, targets, detect_owner=True,
-                 include_image=False, silent=None, preview=None, **kwargs):
+                 include_image=False, silent=None, preview=None, topic=None,
+                 **kwargs):
         """
         Initialize Telegram Object
         """
@@ -344,6 +349,20 @@ def __init__(self, bot_token, targets, detect_owner=True,
         self.preview = self.template_args['preview']['default'] \
             if preview is None else bool(preview)
 
+        if topic:
+            try:
+                self.topic = int(topic)
+
+            except (TypeError, ValueError):
+                # Not a valid integer; ignore entry
+                err = 'The Telegram Topic ID specified ({}) is invalid.'\
+                    .format(topic)
+                self.logger.warning(err)
+                raise TypeError(err)
+        else:
+            # No Topic Thread
+            self.topic = None
+
         # if detect_owner is set to True, we will attempt to determine who
         # the bot owner is based on the first person who messaged it.  This
         # is not a fool proof way of doing things as over time Telegram removes
@@ -635,6 +654,9 @@ def send(self, body, title='', notify_type=NotifyType.INFO, attach=None,
             'disable_web_page_preview': not self.preview,
         }
 
+        if self.topic:
+            payload['message_thread_id'] = self.topic
+
         # Prepare Message Body
         if self.notify_format == NotifyFormat.MARKDOWN:
             payload['parse_mode'] = 'MARKDOWN'
@@ -782,6 +804,9 @@ def url(self, privacy=False, *args, **kwargs):
             'preview': 'yes' if self.preview else 'no',
         }
 
+        if self.topic:
+            params['topic'] = self.topic
+
         # Extend our parameters
         params.update(self.url_parameters(privacy=privacy, *args, **kwargs))
 
@@ -863,6 +888,10 @@ def parse_url(url):
         # Store our bot token
         results['bot_token'] = bot_token
 
+        # Support Thread Topic
+        if 'topic' in results['qsd'] and len(results['qsd']['topic']):
+            results['topic'] = results['qsd']['topic']
+
         # Silent (Sends the message Silently); users will receive
         # notification with no sound.
         results['silent'] = \

test/test_plugin_telegram.py

@@ -98,6 +98,14 @@
     ('tgram://bottest@123456789:abcdefg_hijklmnop/lead2gold/', {
         'instance': NotifyTelegram,
     }),
+    # Support Thread Topics
+    ('tgram://bottest@123456789:abcdefg_hijklmnop/id1/?topic=12345', {
+        'instance': NotifyTelegram,
+    }),
+    # Threads must be numeric
+    ('tgram://bottest@123456789:abcdefg_hijklmnop/id1/?topic=invalid', {
+        'instance': TypeError,
+    }),
     # Testing image
     ('tgram://123456789:abcdefg_hijklmnop/lead2gold/?image=Yes', {
         'instance': NotifyTelegram,