Allow creating a public thread without a starter message

3 files changed, 17 insertions, 11 deletions

diff --git a/discord/channel.py b/discord/channel.py
index d5a18a70..1ac05c65 100644
--- a/discord/channel.py
+++ b/discord/channel.py
@@ -637,6 +637,7 @@ class TextChannel(discord.abc.Messageable, discord.abc.GuildChannel, Hashable):
         name: str,
         message: Optional[Snowflake] = None,
         auto_archive_duration: ThreadArchiveDuration = 1440,
+        type: Optional[ChannelType] = None,
         reason: Optional[str] = None
     ) -> Thread:
         """|coro|
@@ -645,7 +646,9 @@ class TextChannel(discord.abc.Messageable, discord.abc.GuildChannel, Hashable):
 
         If no starter message is passed with the ``message`` parameter then
         you must have :attr:`~discord.Permissions.send_messages` and
-        :attr:`~discord.Permissions.use_private_threads` in order to start the thread.
+        :attr:`~discord.Permissions.use_private_threads` in order to start the thread
+        if the ``type`` parameter is :attr:`~discord.ChannelType.private_thread`.
+        Otherwise :attr:`~discord.Permissions.use_public_threads` is needed.
 
         If a starter message is passed with the ``message`` parameter then
         you must have :attr:`~discord.Permissions.send_messages` and
@@ -664,6 +667,10 @@ class TextChannel(discord.abc.Messageable, discord.abc.GuildChannel, Hashable):
         auto_archive_duration: :class:`int`
             The duration in minutes before a thread is automatically archived for inactivity.
             Defaults to ``1440`` or 24 hours.
+        type: Optional[:class:`ChannelType`]
+            The type of thread to create. If a ``message`` is passed then this parameter
+            is ignored, as a thread started with a message is always a public thread.
+            By default this creates a private thread if this is ``None``.
         reason: :class:`str`
             The reason for starting a new thread. Shows up on the audit log.
 
@@ -680,21 +687,23 @@ class TextChannel(discord.abc.Messageable, discord.abc.GuildChannel, Hashable):
             The started thread
         """
 
+        if type is None:
+            type = ChannelType.private_thread
+
         if message is None:
-            data = await self._state.http.start_private_thread(
+            data = await self._state.http.start_thread_without_message(
                 self.id,
                 name=name,
                 auto_archive_duration=auto_archive_duration,
-                type=ChannelType.private_thread.value,
+                type=type.value,
                 reason=reason,
             )
         else:
-            data = await self._state.http.start_public_thread(
+            data = await self._state.http.start_thread_with_message(
                 self.id,
                 message.id,
                 name=name,
                 auto_archive_duration=auto_archive_duration,
-                type=ChannelType.public_thread.value,
                 reason=reason,
             )
 
diff --git a/discord/http.py b/discord/http.py
index 86a9e094..fd0f1e78 100644
--- a/discord/http.py
+++ b/discord/http.py
@@ -867,20 +867,18 @@ class HTTPClient:
 
     # Thread management
 
-    def start_public_thread(
+    def start_thread_with_message(
         self,
         channel_id: Snowflake,
         message_id: Snowflake,
         *,
         name: str,
         auto_archive_duration: threads.ThreadArchiveDuration,
-        type: threads.ThreadType,
         reason: Optional[str] = None,
     ) -> Response[threads.Thread]:
         payload = {
             'name': name,
             'auto_archive_duration': auto_archive_duration,
-            'type': type,
         }
 
         route = Route(
@@ -888,7 +886,7 @@ class HTTPClient:
         )
         return self.request(route, json=payload, reason=reason)
 
-    def start_private_thread(
+    def start_thread_without_message(
         self,
         channel_id: Snowflake,
         *,
diff --git a/discord/message.py b/discord/message.py
index 18c4658e..82f812db 100644
--- a/discord/message.py
+++ b/discord/message.py
@@ -1511,12 +1511,11 @@ class Message(Hashable):
         if self.guild is None:
             raise InvalidArgument('This message does not have guild info attached.')
 
-        data = await self._state.http.start_public_thread(
+        data = await self._state.http.start_thread_with_message(
             self.channel.id,
             self.id,
             name=name,
             auto_archive_duration=auto_archive_duration,
-            type=ChannelType.public_thread.value,
         )
         return Thread(guild=self.guild, state=self._state, data=data)  # type: ignore