From a1b5cefc8b84bfc005b7f5efc79f3f6801bbbd97 Mon Sep 17 00:00:00 2001
From: Khazhismel Kumykov <khazhy@gmail.com>
Date: Sun, 1 May 2016 18:47:39 -0400
Subject: [PATCH] Add move_role

move_role will only send changed roles.
discord will accept trying to move to position 0, or trying to move the
everyone role. It will result in unexpected changes, so we prohibit it.
---
 discord/client.py | 56 +++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 56 insertions(+)

diff --git a/discord/client.py b/discord/client.py
index 3ceed252d..3fc9d20fa 100644
--- a/discord/client.py
+++ b/discord/client.py
@@ -2129,6 +2129,62 @@ class Client:
 
     # Role management
 
+    @asyncio.coroutine
+    def move_role(self, server, role, position):
+        """|coro|
+
+        Moves the specified :class:`Role` to the given position in the :class:`Server`.
+
+        This does **not** edit the role ordering in place.
+
+        Parameters
+        -----------
+        server : :class:`Server`
+            The server the role belongs to.
+        role : :class:`Role`
+            The role to edit.
+        position : int
+            The position to insert the role to.
+
+        Raises
+        -------
+        InvalidArgument
+            If position is 0, or role is server.default_role
+        Forbidden
+            You do not have permissions to change role order.
+        HTTPException
+            If moving the role failed, or you are of too low rank to move the role.
+        """
+
+        if position == 0:
+            raise InvalidArgument("Cannot move role to position 0")
+
+        if role == server.default_role:
+            raise InvalidArgument("Cannot move default role")
+
+        if role.position == position:
+            return  # Save discord the extra request.
+
+        url = '{0}/{1.id}/roles'.format(endpoints.SERVERS, server)
+
+        change_range = range(min(role.position, position), max(role.position, position) + 1)
+
+        roles = [r.id for r in sorted(filter(lambda x: (x.position in change_range) and x != role, server.roles), key=lambda x: x.position)]
+
+        if role.position > position:
+            roles.insert(0, role.id)
+        else:
+            roles.append(role.id)
+
+        payload = [{"id": z[0], "position": z[1]} for z in zip(roles, change_range)]
+
+        r = yield from self.session.patch(url, data=utils.to_json(payload), headers=self.headers)
+        log.debug(request_logging_format.format(method='PATCH', response=r))
+        yield from utils._verify_successful_response(r)
+
+        data = yield from r.json()
+        log.debug(request_success_log.format(json=payload, response=r, data=data))
+
     @asyncio.coroutine
     def edit_role(self, server, role, **fields):
         """|coro|