Add method get_discussion_message

compiler/docs/compiler.py

@@ -182,6 +182,7 @@ def pyrogram_api():
             search_messages
             search_global
             download_media
+            get_discussion_message
         """,
         chats="""
         Chats

pyrogram/methods/messages/__init__.py

@@ -29,6 +29,7 @@ from .edit_message_media import EditMessageMedia
 from .edit_message_reply_markup import EditMessageReplyMarkup
 from .edit_message_text import EditMessageText
 from .forward_messages import ForwardMessages
+from .get_discussion_message import GetDiscussionMessage
 from .get_history import GetHistory
 from .get_history_count import GetHistoryCount
 from .get_media_group import GetMediaGroup
@@ -104,6 +105,7 @@ class Messages(
     CopyMessage,
     CopyMediaGroup,
     SearchMessagesCount,
-    SearchGlobalCount
+    SearchGlobalCount,
+    GetDiscussionMessage
 ):
     pass

pyrogram/methods/messages/get_discussion_message.py

@@ -0,0 +1,62 @@
+#  Pyrogram - Telegram MTProto API Client Library for Python
+#  Copyright (C) 2017-2021 Dan <https://github.com/delivrance>
+#
+#  This file is part of Pyrogram.
+#
+#  Pyrogram is free software: you can redistribute it and/or modify
+#  it under the terms of the GNU Lesser General Public License as published
+#  by the Free Software Foundation, either version 3 of the License, or
+#  (at your option) any later version.
+#
+#  Pyrogram is distributed in the hope that it will be useful,
+#  but WITHOUT ANY WARRANTY; without even the implied warranty of
+#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+#  GNU Lesser General Public License for more details.
+#
+#  You should have received a copy of the GNU Lesser General Public License
+#  along with Pyrogram.  If not, see <http://www.gnu.org/licenses/>.
+
+from typing import Union
+
+from pyrogram import raw
+from pyrogram import types
+from pyrogram.scaffold import Scaffold
+
+
+class GetDiscussionMessage(Scaffold):
+    async def get_discussion_message(
+        self,
+        chat_id: Union[int, str],
+        message_id: int,
+    ) -> "types.Message":
+        """Get the discussion message from the linked discussion group of a channel post.
+
+        Reply to the returned message to leave a comment on the linked channel post.
+
+        Parameters:
+            chat_id (``int`` | ``str``):
+                Unique identifier (int) or username (str) of the target chat.
+
+            message_id (``int``):
+                Message id.
+
+        Example:
+            .. code-block:: python
+
+                # Get the discussion message
+                m = app.get_discussion_message(channel_id, message_id)
+
+                # Comment to the post by replying
+                m.reply("comment")
+        """
+        r = await self.send(
+            raw.functions.messages.GetDiscussionMessage(
+                peer=await self.resolve_peer(chat_id),
+                msg_id=message_id
+            )
+        )
+
+        users = {u.id: u for u in r.users}
+        chats = {c.id: c for c in r.chats}
+
+        return await types.Message._parse(self, r.messages[0], users, chats)