feat(room): add POST /room API

app/database/room.py

@@ -29,7 +29,7 @@ class RoomBase(SQLModel):
     name: str = Field(index=True)
     category: RoomCategory = Field(default=RoomCategory.NORMAL, index=True)
     duration: int | None = Field(default=None)  # minutes
-    starts_at: datetime = Field(
+    starts_at: datetime | None = Field(
         sa_column=Column(
             DateTime(timezone=True),
         ),

app/models/multiplayer_hub.py

@@ -335,6 +335,58 @@ class MultiplayerRoom(BaseModel):
     active_countdowns: list[MultiplayerCountdown] = Field(default_factory=list)
     channel_id: int
 
+    @classmethod
+    def from_db(cls, room) -> "MultiplayerRoom":
+        """
+        将 Room (数据库模型) 转换为 MultiplayerRoom (业务模型)
+        """
+
+        # 用户列表
+        users = [MultiplayerRoomUser(user_id=room.host_id)]
+        host_user = MultiplayerRoomUser(user_id=room.host_id)
+        # playlist 转换
+        playlist = []
+        if hasattr(room, "playlist"):
+            for item in room.playlist:
+                playlist.append(
+                    PlaylistItem(
+                        id=item.id,
+                        owner_id=item.owner_id,
+                        beatmap_id=item.beatmap_id,
+                        beatmap_checksum=item.beatmap.checksum if item.beatmap else "",
+                        ruleset_id=item.ruleset_id,
+                        required_mods=item.required_mods,
+                        allowed_mods=item.allowed_mods,
+                        expired=item.expired,
+                        playlist_order=item.playlist_order,
+                        played_at=item.played_at,
+                        star_rating=item.beatmap.difficulty_rating
+                        if item.beatmap is not None
+                        else 0.0,
+                        freestyle=item.freestyle,
+                    )
+                )
+
+        return cls(
+            room_id=room.id,
+            state=getattr(room, "state", MultiplayerRoomState.OPEN),
+            settings=MultiplayerRoomSettings(
+                name=room.name,
+                playlist_item_id=playlist[0].id if playlist else 0,
+                password=getattr(room, "password", ""),
+                match_type=room.type,
+                queue_mode=room.queue_mode,
+                auto_start_duration=timedelta(seconds=room.auto_start_duration),
+                auto_skip=room.auto_skip,
+            ),
+            users=users,
+            host=host_user,
+            match_state=None,
+            playlist=playlist,
+            active_countdowns=[],
+            channel_id=getattr(room, "channel_id", 0),
+        )
+
 
 class MultiplayerQueue:
     def __init__(self, room: "ServerMultiplayerRoom"):

app/router/room.py

@@ -1,13 +1,17 @@
 from __future__ import annotations
 
+from datetime import UTC, datetime
+from time import timezone
 from typing import Literal
 
 from app.database.lazer_user import User
-from app.database.room import RoomResp
+from app.database.playlists import Playlist
+from app.database.room import Room, RoomBase, RoomResp
 from app.dependencies.database import get_db, get_redis
 from app.dependencies.fetcher import get_fetcher
 from app.dependencies.user import get_current_user
 from app.fetcher import Fetcher
+from app.models.multiplayer_hub import MultiplayerRoom, ServerMultiplayerRoom
 from app.models.room import RoomStatus
 from app.signalr.hub import MultiplayerHubs
 
@@ -33,22 +37,68 @@ async def get_all_rooms(
     rooms = MultiplayerHubs.rooms.values()
     resp_list: list[RoomResp] = []
     for room in rooms:
-        if category != "realtime":  # 歌单模式的处理逻辑
-            if room.category == category:
-                if mode == "owned":
-                    if (
-                        room.room.host.user_id if room.room.host is not None else 0
-                    ) != current_user.id:
-                        continue
-            else:
-                continue
-        else:
-            if mode == "owned":
-                if (
-                    room.room.host.user_id if room.room.host is not None else 0
-                ) != current_user.id:
-                    continue
-            if room.status != status:
-                continue
+        if category == "realtime" and room.category != "normal":
+            continue
+        elif category != room.category:
+            continue
         resp_list.append(await RoomResp.from_hub(room))
     return resp_list
+
+
+class APICreatedRoom(RoomResp):
+    error: str = ""
+
+
+class APIUploadedRoom(RoomBase):
+    def to_room(self) -> Room:
+        """
+        将 APIUploadedRoom 转换为 Room 对象，playlist 字段需单独处理。
+        """
+        room_dict = self.model_dump()
+        room_dict.pop("playlist", None)
+        # host_id 已在字段中
+        return Room(**room_dict)
+
+    id: int | None
+    host_id: int | None = None
+    playlist: list[Playlist]
+
+
+@router.post("/rooms", tags=["room"], response_model=APICreatedRoom)
+async def create_room(
+    room: APIUploadedRoom,
+    db: AsyncSession = Depends(get_db),
+    current_user: User = Depends(get_current_user),
+):
+    # db_room = Room.from_resp(room)
+    await db.refresh(current_user)
+    user_id = current_user.id
+    db_room = room.to_room()
+    db_room.host_id = current_user.id if current_user.id else 1
+    db.add(db_room)
+    await db.commit()
+    await db.refresh(db_room)
+
+    playlist: list[Playlist] = []
+    # 处理 APIUploadedRoom 里的 playlist 字段
+    for item in room.playlist:
+        # 确保 room_id 正确赋值
+        item.id = await Playlist.get_next_id_for_room(db_room.id, db)
+        item.room_id = db_room.id
+        item.owner_id = user_id if user_id else 1
+        db.add(item)
+        await db.commit()
+        await db.refresh(item)
+        playlist.append(item)
+        await db.refresh(db_room)
+    db_room.playlist = playlist
+    server_room = ServerMultiplayerRoom(
+        room=MultiplayerRoom.from_db(db_room),
+        category=db_room.category,
+        start_at=datetime.now(UTC),
+        hub=MultiplayerHubs,
+    )
+    MultiplayerHubs.rooms[db_room.id] = server_room
+    created_room = APICreatedRoom.model_validate(db_room)
+    created_room.error = ""
+    return created_room

app/signalr/hub/multiplayer.py

@@ -103,7 +103,7 @@ class MultiplayerHub(Hub[MultiplayerClientState]):
                 item = room.playlist[0]
                 item.owner_id = client.user_id
                 room.room_id = db_room.id
-                starts_at = db_room.starts_at
+                starts_at = db_room.starts_at or datetime.now(UTC)
                 await Playlist.add_to_db(item, db_room.id, session)
                 server_room = ServerMultiplayerRoom(
                     room=room,