Add applied_tags param to Webhook.send

discord/http.py

@@ -153,6 +153,7 @@ def handle_message_parameters(
     mention_author: Optional[bool] = None,
     thread_name: str = MISSING,
     channel_payload: Dict[str, Any] = MISSING,
+    applied_tags: Optional[SnowflakeList] = MISSING,
 ) -> MultipartParameters:
     if files is not MISSING and file is not MISSING:
         raise TypeError('Cannot mix file and files keyword arguments.')
@@ -243,6 +244,12 @@ def handle_message_parameters(
 
         payload['attachments'] = attachments_payload
 
+    if applied_tags is not MISSING:
+        if applied_tags is not None:
+            payload['applied_tags'] = applied_tags
+        else:
+            payload['applied_tags'] = []
+
     if channel_payload is not MISSING:
         payload = {
             'message': payload,

discord/webhook/async_.py

@@ -45,7 +45,7 @@
 from ..partial_emoji import PartialEmoji
 from ..http import Route, handle_message_parameters, MultipartParameters, HTTPClient, json_or_text
 from ..mixins import Hashable
-from ..channel import TextChannel, ForumChannel, PartialMessageable
+from ..channel import TextChannel, ForumChannel, PartialMessageable, ForumTag
 from ..file import File
 
 __all__ = (
@@ -88,6 +88,7 @@
         PartialChannel as PartialChannelPayload,
     )
     from ..types.emoji import PartialEmoji as PartialEmojiPayload
+    from ..types.snowflake import SnowflakeList
 
     BE = TypeVar('BE', bound=BaseException)
     _State = Union[ConnectionState, '_WebhookState']
@@ -1639,6 +1640,7 @@ async def send(
         wait: bool = False,
         suppress_embeds: bool = False,
         silent: bool = False,
+        applied_tags: List[ForumTag] = MISSING,
     ) -> Optional[WebhookMessage]:
         """|coro|
 
@@ -1724,6 +1726,10 @@ async def send(
             in the UI, but will not actually send a notification.
 
             .. versionadded:: 2.2
+        applied_tags: List[:class:`ForumTag`]
+            Tags to apply to the thread if the webhook belongs to a :class:`~discord.ForumChannel`.
+
+            .. versionadded:: 2.4
 
         Raises
         --------
@@ -1782,6 +1788,11 @@ async def send(
         if thread_name is not MISSING and thread is not MISSING:
             raise TypeError('Cannot mix thread_name and thread keyword arguments.')
 
+        if applied_tags is MISSING:
+            applied_tag_ids = MISSING
+        else:
+            applied_tag_ids: SnowflakeList = [tag.id for tag in applied_tags]
+
         with handle_message_parameters(
             content=content,
             username=username,
@@ -1796,6 +1807,7 @@ async def send(
             thread_name=thread_name,
             allowed_mentions=allowed_mentions,
             previous_allowed_mentions=previous_mentions,
+            applied_tags=applied_tag_ids,
         ) as params:
             adapter = async_context.get()
             thread_id: Optional[int] = None