refactor(multiplayer): 简化数据模型，只使用跟lazer源码中类似的Room模型

app/models/room.py

@@ -0,0 +1,103 @@
+from __future__ import annotations
+
+from datetime import datetime
+from enum import Enum
+
+from app.database.beatmap import Beatmap
+from app.database.user import User
+from app.models.mods import APIMod
+
+from pydantic import BaseModel
+
+
+class RoomCategory(str, Enum):
+    NORMAL = "normal"
+    SPOTLIGHT = "spotlight"
+    FEATURED_ARTIST = "featured_artist"
+    DAILY_CHALLENGE = "daily_challenge"
+
+
+class MatchType(str, Enum):
+    PLAYLISTS = "playlists"
+    HEAD_TO_HEAD = "head_to_head"
+    TEAM_VERSUS = "team_versus"
+
+
+class QueueMode(str, Enum):
+    HOST_ONLY = "host_only"
+    ALL_PLAYERS = "all_players"
+    ALL_PLAYERS_ROUND_ROBIN = "all_players_round_robin"
+
+
+class RoomAvailability(str, Enum):
+    PUBLIC = "public"
+    FRIENDS_ONLY = "friends_only"
+    INVITE_ONLY = "invite_only"
+
+
+class RoomStatus(str, Enum):
+    IDLE = "idle"
+    PLAYING = "playing"
+
+
+class PlaylistItem(BaseModel):
+    id: int | None
+    owner_id: int
+    ruleset_id: int
+    expired: bool
+    playlist_order: int | None
+    played_at: datetime | None
+    allowed_mods: list[APIMod] = []
+    required_mods: list[APIMod] = []
+    beatmap_id: int
+    beatmap: Beatmap | None
+    freestyle: bool
+
+
+class RoomPlaylistItemStats(BaseModel):
+    count_active: int
+    count_total: int
+    ruleset_ids: list[int] = []
+
+
+class RoomDifficultyRange(BaseModel):
+    min: float
+    max: float
+
+
+class ItemAttemptsCount(BaseModel):
+    id: int
+    attempts: int
+    passed: bool
+
+
+class PlaylistAggregateScore(BaseModel):
+    playlist_item_attempts: list[ItemAttemptsCount]
+
+
+class Room(BaseModel):
+    id: int | None
+    name: str = ""
+    password: str | None
+    has_password: bool = False
+    host: User | None
+    category: RoomCategory = RoomCategory.NORMAL
+    duration: int | None
+    starts_at: datetime | None
+    ends_at: datetime | None
+    participant_count: int = 0
+    recent_participants: list[User] = []
+    max_attempts: int | None
+    playlist: list[PlaylistItem] = []
+    playlist_item_stats: RoomPlaylistItemStats | None
+    difficulty_range: RoomDifficultyRange | None
+    type: MatchType = MatchType.PLAYLISTS
+    queue_mode: QueueMode = QueueMode.HOST_ONLY
+    auto_skip: bool = False
+    auto_start_duration: int = 0
+    current_user_score: PlaylistAggregateScore | None
+    current_playlist_item: PlaylistItem | None
+    channel_id: int = 0
+    status: RoomStatus = RoomStatus.IDLE
+    # availability 字段在当前序列化中未包含，但可能在某些场景下需要
+    availability: RoomAvailability | None