refactor(room): 重构房间相关路由

- 优化了房间列表获取逻辑，增加了对房间状态的筛选
- 重构了单个房间获取路由，提高了代码可读性和性能
- 移除了未使用的导入和冗余代码，提高了代码整洁度
- 增加了对 Redis 的错误处理，提高了系统稳定性

app/router/room.py

@@ -2,14 +2,11 @@ from __future__ import annotations
 
 from app.database.room import RoomIndex
 from app.dependencies.database import get_db, get_redis
-from app.models.room import (
-    MultiplayerRoom,
-    MultiplayerRoomUser,
-    Room,
-)
-
-from .api_router import router
+from app.dependencies.fetcher import get_fetcher
+from app.fetcher import Fetcher
+from app.models.room import MultiplayerRoom, MultiplayerRoomState, Room
 
+from api_router import router
 from fastapi import Depends, HTTPException, Query
 from sqlmodel import select
 from sqlmodel.ext.asyncio.session import AsyncSession
@@ -17,51 +14,52 @@ from sqlmodel.ext.asyncio.session import AsyncSession
 
 @router.get("/rooms", tags=["rooms"], response_model=list[Room])
 async def get_all_rooms(
-    mode: str = Query(
-        None
-    ),  # TODO: lazer源码显示房间不会是除了open以外的其他状态，先放在这里
+    mode: str = Query(None),  # TODO: 对房间根据状态进行筛选
     status: str = Query(None),
-    category: str = Query(None),
+    category: str = Query(None),  # TODO: 对房间根据分类进行筛选（真的有人用这功能吗）
     db: AsyncSession = Depends(get_db),
+    fetcher: Fetcher = Depends(get_fetcher),
 ):
-    all_room_ids = (await db.exec(select(RoomIndex).where(True))).all()
+    all_roomID = (await db.exec(select(RoomIndex))).all()
     redis = get_redis()
-    roomsList: list[Room] = []
-    if redis:
-        for room_index in all_room_ids:
-            dumped_room = redis.get(str(room_index.id))
-            if dumped_room:
-                actual_room = MultiplayerRoom.model_validate_json(str(dumped_room))
-                actual_room = Room.from_MultiplayerRoom(actual_room)
-                if actual_room.status == status and actual_room.category == category:
-                    roomsList.append(actual_room)
-        return roomsList
+    if redis is not None:
+        resp: list[Room] = []
+        for id in all_roomID:
+            dumped_room = redis.get(str(id))
+            validated_room = MultiplayerRoom.model_validate_json(str(dumped_room))
+            flag: bool = False
+            if validated_room.State == MultiplayerRoomState.OPEN and status == "idle":
+                flag = True
+            elif validated_room != MultiplayerRoomState.CLOSED:
+                flag = True
+            if flag:
+                resp.append(
+                    await Room.from_mpRoom(
+                        MultiplayerRoom.model_validate_json(str(dumped_room)),
+                        db,
+                        fetcher,
+                    )
+                )
+        return resp
     else:
         raise HTTPException(status_code=500, detail="Redis Error")
 
 
-@router.put("/rooms/{room}/users/{user}", tags=["rooms"], response_model=Room)
-async def add_user_to_room(
-    room: int, user: int, password: str, db: AsyncSession = Depends(dependency=get_db)
+@router.get("/rooms/{room}", tags=["room"], response_model=Room)
+async def get_room(
+    room: int,
+    db: AsyncSession = Depends(get_db),
+    fetcher: Fetcher = Depends(get_fetcher),
 ):
     redis = get_redis()
     if redis:
-        dumped_room = redis.get(str(room))
-        if not dumped_room:
-            raise HTTPException(status_code=404, detail="房间不存在")
-        actual_room = MultiplayerRoom.model_validate_json(str(dumped_room))
-
-        # 验证密码
-        if password != actual_room.settings.password:
-            raise HTTPException(status_code=403, detail="Invalid password")
-
-        # 继续处理加入房间的逻辑
-        actual_room.users.append(
-            MultiplayerRoomUser(
-                id=user, matchState=None, rulesetId=None, beatmapId=None
+        dumped_room = str(redis.get(str(room)))
+        if dumped_room is not None:
+            resp = await Room.from_mpRoom(
+                MultiplayerRoom.model_validate_json(str(dumped_room)), db, fetcher
             )
-        )
-        actual_room = Room.from_MultiplayerRoom(actual_room)
-        return actual_room
+            return resp
+        else:
+            raise HTTPException(status_code=404, detail="Room Not Found")
     else:
-        raise HTTPException(status_code=500, detail="Redis Error")
+        raise HTTPException(status_code=500, detail="Redis error")