dm_channels: add dummy functions for _gdm

- storage: fix error

litecord/blueprints/dm_channels.py

@@ -24,11 +24,51 @@ from litecord.blueprints.auth import token_check
 from litecord.blueprints.checks import channel_check
 from litecord.enums import ChannelType
 from litecord.errors import BadRequest, Forbidden
+from litecord.snowflake import get_snowflake
 
 log = Logger(__name__)
 bp = Blueprint('dm_channels', __name__)
 
 
+async def _gdm_create(user_id, peer_id) -> int:
+    """Create a group dm, given two users.
+
+    Returns the new GDM id.
+    """
+    channel_id = get_snowflake()
+
+    # TODO
+
+    return channel_id
+
+
+async def _gdm_add_recipient(channel_id: int, peer_id: int, *, user_id=None):
+    """Add a recipient to a Group DM.
+
+    Dispatches:
+     - A system message with the join (depending of user_id)
+     - A CHANNEL_CREATE to the peer.
+     - A CHANNEL_UPDATE to all remaining recipients.
+    """
+
+    # TODO
+    pass
+
+
+async def _gdm_remove_recipient(channel_id: int, peer_id: int, *, user_id=None):
+    """Remove a member from a GDM.
+
+    Dispatches:
+     - A system message with the leave or forced removal (depending if user_id)
+        exists or not.
+     - A CHANNEL_DELETE to the peer.
+     - A CHANNEL_UPDATE to all remaining recipients.
+    """
+
+    # TODO
+    pass
+
+
 @bp.route('/<int:dm_chan>/receipients/<int:peer_id>', methods=['PUT'])
 async def add_to_group_dm(dm_chan, peer_id):
     """Adds a member to a group dm OR creates a group dm."""

litecord/storage.py

@@ -353,7 +353,7 @@ class Storage:
 
         return list(map(_overwrite_convert, overwrite_rows))
 
-    async def _gdm_recipient_ids(self, channel_id: int) -> List[int]:
+    async def gdm_recipient_ids(self, channel_id: int) -> List[int]:
         """Get the list of user IDs that are recipients of the
         given Group DM."""
         user_ids = await self.db.fetch("""
@@ -370,7 +370,7 @@ class Storage:
     async def _gdm_recipients(self, channel_id: int) -> List[int]:
         """Get the list of users that are recipients of the
         given Group DM."""
-        recipients = await self._gdm_recipient_ids(channel_id)
+        recipients = await self.gdm_recipient_ids(channel_id)
         res = []
 
         for user_id in recipients:
@@ -435,7 +435,6 @@ class Storage:
             """, channel_id)
 
             drow = dict(gdm_row)
-            recipients 
             drow['recipients'] = await self._gdm_recipients(channel_id)
 
             return drow