Fix reward fulfill and refund

Rewards.refund() will now cancel and refund correctly
Rewards.fulfill() will now accept correctly

Added repr for CustomReward

Author: chillymosh

twitchio/http.py

@@ -462,12 +462,12 @@ async def get_reward_redemptions(
     async def update_reward_redemption_status(
         self, token: str, broadcaster_id: int, reward_id: str, custom_reward_id: str, status: bool
     ):
-        params = [("id", custom_reward_id), ("broadcaster_id", str(broadcaster_id)), ("reward_id", reward_id)]
-        status = "FULFILLED" if status else "CANCELLED"
+        params = [("id", reward_id), ("broadcaster_id", str(broadcaster_id)), ("reward_id", custom_reward_id)]
+        status = "FULFILLED" if status else "CANCELED"
         return await self.request(
             Route(
                 "PATCH",
-                "/channel_points/custom_rewards/redemptions",
+                "channel_points/custom_rewards/redemptions",
                 query=params,
                 body={"status": status},
                 token=token,

twitchio/rewards.py

@@ -260,6 +260,8 @@ async def get_redemptions(self, token: str, status: str, sort: str = "OLDEST", f
         else:
             return [CustomRewardRedemption(x, self._http, self) for x in data]
 
+    def __repr__(self):
+        return f"<CustomReward id={self.id} title={self.title} cost={self.cost}>"
 
 class CustomRewardRedemption:
 
@@ -310,7 +312,7 @@ async def fulfill(self, token: str):
                 ) from error
             raise
         else:
-            self.__init__(data["data"], self._http, self.reward if isinstance(self.reward, CustomReward) else None)
+            self.__init__(data[0], self._http, self.reward if isinstance(self.reward, CustomReward) else None)
             return self
 
     async def refund(self, token: str):
@@ -344,5 +346,5 @@ async def refund(self, token: str):
                 ) from error
             raise
         else:
-            self.__init__(data["data"], self._http, self.reward if isinstance(self.reward, CustomReward) else None)
+            self.__init__(data[0], self._http, self.reward if isinstance(self.reward, CustomReward) else None)
             return self