From 4e175d36d3453c5c08ae398442f22151725f7e0e Mon Sep 17 00:00:00 2001
From: Rapptz <rapptz@gmail.com>
Date: Sun, 25 Dec 2016 17:50:40 -0500
Subject: [PATCH] Add delete_after parameter to MessageChannel.send

---
 discord/abc.py   | 18 ++++++++++++++++--
 discord/state.py |  4 ++--
 2 files changed, 18 insertions(+), 4 deletions(-)

diff --git a/discord/abc.py b/discord/abc.py
index e609faf27..81bb41057 100644
--- a/discord/abc.py
+++ b/discord/abc.py
@@ -145,7 +145,7 @@ class MessageChannel(metaclass=abc.ABCMeta):
         raise NotImplementedError
 
     @asyncio.coroutine
-    def send(self, content=None, *, tts=False, embed=None, file=None, filename=None):
+    def send(self, content=None, *, tts=False, embed=None, file=None, filename=None, delete_after=None):
         """|coro|
 
         Sends a message to the channel with the content given.
@@ -185,6 +185,10 @@ class MessageChannel(metaclass=abc.ABCMeta):
             The filename of the file. Defaults to ``file.name`` if it's available.
             If this is provided, you must also provide the ``file`` parameter or it
             is silently ignored.
+        delete_after: float
+            If provided, the number of seconds to wait in the background
+            before deleting the message we just sent. If the deletion fails,
+            then it is silently ignored.
 
         Raises
         --------
@@ -219,7 +223,17 @@ class MessageChannel(metaclass=abc.ABCMeta):
         else:
             data = yield from state.http.send_message(channel_id, content, guild_id=guild_id, tts=tts, embed=embed)
 
-        return Message(channel=self, state=state, data=data)
+        ret = Message(channel=self, state=state, data=data)
+        if delete_after is not None:
+            @asyncio.coroutine
+            def delete():
+                yield from asyncio.sleep(delete_after, loop=state.loop)
+                try:
+                    yield from ret.delete()
+                except:
+                    pass
+            discord.compat.create_task(delete(), loop=state.loop)
+        return ret
 
     @asyncio.coroutine
     def send_typing(self):
diff --git a/discord/state.py b/discord/state.py
index e9b5a4854..1570d53db 100644
--- a/discord/state.py
+++ b/discord/state.py
@@ -53,7 +53,7 @@ log = logging.getLogger(__name__)
 ReadyState = namedtuple('ReadyState', ('launch', 'guilds'))
 
 class StateContext:
-    __slots__ = ('store_user', 'http', 'self_id', 'store_emoji', 'reaction_emoji')
+    __slots__ = ('store_user', 'http', 'self_id', 'store_emoji', 'reaction_emoji', 'loop')
 
     def __init__(self, **kwargs):
         for attr, value in kwargs.items():
@@ -71,7 +71,7 @@ class ConnectionState:
         self.ctx = StateContext(store_user=self.store_user,
                                 store_emoji=self.store_emoji,
                                 reaction_emoji=self._get_reaction_emoji,
-                                http=http, self_id=None)
+                                http=http, self_id=None, loop=loop)
         self.clear()
 
     def clear(self):