Merge branch 'dev' into command-description-config

utils/database.py

@@ -1,20 +1,31 @@
 from aioredis import Redis
-from typing import Sequence
+from typing import Dict, List, Optional
+from bot import redis_prefix
 
 
 class AutoJoin:
     @staticmethod
-    async def get_channels(redis: Redis) -> Sequence[tuple]:
+    async def get_channels(redis: Redis) -> Dict[str, str]:
         # return all channels
-        channels = await redis.hgetall(name="autojoin")
+        channels = await redis.hgetall(f"{redis_prefix}:autojoin")
         return {key: value.split("-") for key, value in channels.items()}
 
     @staticmethod
-    async def update_channel(redis: Redis, guild_id, voicechannel_id, textchannel_id):
+    async def update_channel(
+        redis: Redis, guild_id: int, voice_channel_id: int, text_channel_id: int
+    ):
         await redis.hset(
-            name="autojoin", key=guild_id, value=f"{voicechannel_id}-{textchannel_id}"
+            f"{redis_prefix}:autojoin",
+            guild_id,
+            f"{voice_channel_id}-{text_channel_id}",
         )
 
     @staticmethod
-    async def del_channel(redis: Redis, guild_id):
-        await redis.hdel("autojoin", guild_id)
+    async def del_channel(redis: Redis, guild_id: int):
+        await redis.hdel(f"{redis_prefix}:autojoin", guild_id)
+
+
+class Playlist:
+    @staticmethod
+    async def random(redis: Redis, amount: Optional[int] = 1) -> List[str]:
+        return await redis.srandmember(f"{redis_prefix}:playlist", amount)