752 lines
24 KiB
Python
752 lines
24 KiB
Python
from __future__ import annotations
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from abc import ABC, abstractmethod
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import asyncio
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from collections.abc import Awaitable, Callable
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from dataclasses import dataclass
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from datetime import UTC, datetime, timedelta
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from enum import IntEnum
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from typing import TYPE_CHECKING, Annotated, Any, ClassVar, Literal, override
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from app.database.beatmap import Beatmap
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from app.dependencies.database import engine
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from app.exception import InvokeException
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from .mods import APIMod
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from .room import (
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DownloadState,
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MatchType,
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MultiplayerRoomState,
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MultiplayerUserState,
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QueueMode,
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RoomCategory,
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RoomStatus,
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)
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from .signalr import (
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SignalRMeta,
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SignalRUnionMessage,
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UserState,
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)
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from pydantic import BaseModel, Field
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from sqlalchemy import update
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from sqlmodel import col
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from sqlmodel.ext.asyncio.session import AsyncSession
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if TYPE_CHECKING:
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from app.signalr.hub import MultiplayerHub
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HOST_LIMIT = 50
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PER_USER_LIMIT = 3
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class MultiplayerClientState(UserState):
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room_id: int = 0
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class MultiplayerRoomSettings(BaseModel):
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name: str = "Unnamed Room"
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playlist_item_id: Annotated[int, Field(default=0), SignalRMeta(use_abbr=False)]
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password: str = ""
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match_type: MatchType = MatchType.HEAD_TO_HEAD
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queue_mode: QueueMode = QueueMode.HOST_ONLY
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auto_start_duration: timedelta = timedelta(seconds=0)
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auto_skip: bool = False
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class BeatmapAvailability(BaseModel):
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state: DownloadState = DownloadState.UNKNOWN
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progress: float | None = None
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class _MatchUserState(SignalRUnionMessage): ...
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class TeamVersusUserState(_MatchUserState):
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team_id: int
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union_type: ClassVar[Literal[0]] = 0
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MatchUserState = TeamVersusUserState
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class _MatchRoomState(SignalRUnionMessage): ...
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class MultiplayerTeam(BaseModel):
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id: int
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name: str
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class TeamVersusRoomState(_MatchRoomState):
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teams: list[MultiplayerTeam] = Field(
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default_factory=lambda: [
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MultiplayerTeam(id=0, name="Team Red"),
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MultiplayerTeam(id=1, name="Team Blue"),
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]
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)
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union_type: ClassVar[Literal[0]] = 0
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MatchRoomState = TeamVersusRoomState
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class PlaylistItem(BaseModel):
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id: Annotated[int, Field(default=0), SignalRMeta(use_abbr=False)]
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owner_id: int
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beatmap_id: int
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beatmap_checksum: str
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ruleset_id: int
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required_mods: list[APIMod] = Field(default_factory=list)
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allowed_mods: list[APIMod] = Field(default_factory=list)
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expired: bool
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playlist_order: int
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played_at: datetime | None = None
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star_rating: float
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freestyle: bool
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def validate_user_mods(
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self,
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user: "MultiplayerRoomUser",
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proposed_mods: list[APIMod],
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) -> tuple[bool, list[APIMod]]:
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"""
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Validates user mods against playlist item rules and returns valid mods.
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Returns (is_valid, valid_mods).
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"""
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from typing import Literal, cast
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from app.models.mods import API_MODS, init_mods
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if not API_MODS:
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init_mods()
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ruleset_id = user.ruleset_id if user.ruleset_id is not None else self.ruleset_id
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ruleset_key = cast(Literal[0, 1, 2, 3], ruleset_id)
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valid_mods = []
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all_proposed_valid = True
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# Check if mods are valid for the ruleset
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for mod in proposed_mods:
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if (
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ruleset_key not in API_MODS
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or mod["acronym"] not in API_MODS[ruleset_key]
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):
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all_proposed_valid = False
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continue
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valid_mods.append(mod)
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# Check mod compatibility within user mods
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incompatible_mods = set()
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final_valid_mods = []
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for mod in valid_mods:
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if mod["acronym"] in incompatible_mods:
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all_proposed_valid = False
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continue
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setting_mods = API_MODS[ruleset_key].get(mod["acronym"])
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if setting_mods:
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incompatible_mods.update(setting_mods["IncompatibleMods"])
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final_valid_mods.append(mod)
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# If not freestyle, check against allowed mods
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if not self.freestyle:
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allowed_acronyms = {mod["acronym"] for mod in self.allowed_mods}
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filtered_valid_mods = []
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for mod in final_valid_mods:
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if mod["acronym"] not in allowed_acronyms:
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all_proposed_valid = False
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else:
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filtered_valid_mods.append(mod)
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final_valid_mods = filtered_valid_mods
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# Check compatibility with required mods
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required_mod_acronyms = {mod["acronym"] for mod in self.required_mods}
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all_mod_acronyms = {
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mod["acronym"] for mod in final_valid_mods
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} | required_mod_acronyms
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# Check for incompatibility between required and user mods
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filtered_valid_mods = []
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for mod in final_valid_mods:
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mod_acronym = mod["acronym"]
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is_compatible = True
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for other_acronym in all_mod_acronyms:
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if other_acronym == mod_acronym:
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continue
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setting_mods = API_MODS[ruleset_key].get(mod_acronym)
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if setting_mods and other_acronym in setting_mods["IncompatibleMods"]:
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is_compatible = False
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all_proposed_valid = False
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break
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if is_compatible:
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filtered_valid_mods.append(mod)
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return all_proposed_valid, filtered_valid_mods
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def clone(self) -> "PlaylistItem":
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copy = self.model_copy()
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copy.required_mods = list(self.required_mods)
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copy.allowed_mods = list(self.allowed_mods)
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return copy
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class _MultiplayerCountdown(BaseModel):
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id: int = 0
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remaining: timedelta
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is_exclusive: bool = False
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class MatchStartCountdown(_MultiplayerCountdown):
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union_type: ClassVar[Literal[0]] = 0
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class ForceGameplayStartCountdown(_MultiplayerCountdown):
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union_type: ClassVar[Literal[1]] = 1
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class ServerShuttingDownCountdown(_MultiplayerCountdown):
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union_type: ClassVar[Literal[2]] = 2
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MultiplayerCountdown = (
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MatchStartCountdown | ForceGameplayStartCountdown | ServerShuttingDownCountdown
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)
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class MultiplayerRoomUser(BaseModel):
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user_id: int
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state: MultiplayerUserState = MultiplayerUserState.IDLE
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availability: BeatmapAvailability = BeatmapAvailability(
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state=DownloadState.UNKNOWN, progress=None
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)
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mods: list[APIMod] = Field(default_factory=list)
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match_state: MatchUserState | None = None
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ruleset_id: int | None = None # freestyle
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beatmap_id: int | None = None # freestyle
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class MultiplayerRoom(BaseModel):
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room_id: int
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state: MultiplayerRoomState
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settings: MultiplayerRoomSettings
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users: list[MultiplayerRoomUser] = Field(default_factory=list)
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host: MultiplayerRoomUser | None = None
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match_state: MatchRoomState | None = None
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playlist: list[PlaylistItem] = Field(default_factory=list)
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active_countdowns: list[MultiplayerCountdown] = Field(default_factory=list)
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channel_id: int
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class MultiplayerQueue:
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def __init__(self, room: "ServerMultiplayerRoom"):
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self.server_room = room
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self.current_index = 0
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@property
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def hub(self) -> "MultiplayerHub":
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return self.server_room.hub
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@property
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def upcoming_items(self):
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return sorted(
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(item for item in self.room.playlist if not item.expired),
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key=lambda i: i.playlist_order,
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)
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@property
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def room(self):
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return self.server_room.room
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async def update_order(self):
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from app.database import Playlist
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match self.room.settings.queue_mode:
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case QueueMode.ALL_PLAYERS_ROUND_ROBIN:
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ordered_active_items = []
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is_first_set = True
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first_set_order_by_user_id = {}
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active_items = [item for item in self.room.playlist if not item.expired]
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active_items.sort(key=lambda x: x.id)
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user_item_groups = {}
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for item in active_items:
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if item.owner_id not in user_item_groups:
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user_item_groups[item.owner_id] = []
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user_item_groups[item.owner_id].append(item)
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max_items = max(
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(len(items) for items in user_item_groups.values()), default=0
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)
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for i in range(max_items):
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current_set = []
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for user_id, items in user_item_groups.items():
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if i < len(items):
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current_set.append(items[i])
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if is_first_set:
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current_set.sort(
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key=lambda item: (item.playlist_order, item.id)
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)
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ordered_active_items.extend(current_set)
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first_set_order_by_user_id = {
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item.owner_id: idx
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for idx, item in enumerate(ordered_active_items)
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}
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else:
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current_set.sort(
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key=lambda item: first_set_order_by_user_id.get(
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item.owner_id, 0
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)
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)
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ordered_active_items.extend(current_set)
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is_first_set = False
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for idx, item in enumerate(ordered_active_items):
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item.playlist_order = idx
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case _:
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ordered_active_items = sorted(
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(item for item in self.room.playlist if not item.expired),
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key=lambda x: x.id,
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)
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async with AsyncSession(engine) as session:
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for idx, item in enumerate(ordered_active_items):
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if item.playlist_order == idx:
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continue
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item.playlist_order = idx
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await Playlist.update(item, self.room.room_id, session)
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await self.hub.playlist_changed(
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self.server_room, item, beatmap_changed=False
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)
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async def update_current_item(self):
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upcoming_items = self.upcoming_items
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next_item = (
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upcoming_items[0]
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if upcoming_items
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else max(
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self.room.playlist,
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key=lambda i: i.played_at or datetime.min,
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)
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)
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self.current_index = self.room.playlist.index(next_item)
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last_id = self.room.settings.playlist_item_id
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self.room.settings.playlist_item_id = next_item.id
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if last_id != next_item.id:
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await self.hub.setting_changed(self.server_room, True)
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async def add_item(self, item: PlaylistItem, user: MultiplayerRoomUser):
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from app.database import Playlist
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is_host = self.room.host and self.room.host.user_id == user.user_id
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if self.room.settings.queue_mode == QueueMode.HOST_ONLY and not is_host:
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raise InvokeException("You are not the host")
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limit = HOST_LIMIT if is_host else PER_USER_LIMIT
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if (
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len([True for u in self.room.playlist if u.owner_id == user.user_id])
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>= limit
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):
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raise InvokeException(f"You can only have {limit} items in the queue")
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if item.freestyle and len(item.allowed_mods) > 0:
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raise InvokeException("Freestyle items cannot have allowed mods")
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async with AsyncSession(engine) as session:
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async with session:
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beatmap = await session.get(Beatmap, item.beatmap_id)
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if beatmap is None:
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raise InvokeException("Beatmap not found")
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if item.beatmap_checksum != beatmap.checksum:
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raise InvokeException("Checksum mismatch")
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# TODO: mods validation
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item.owner_id = user.user_id
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item.star_rating = float(
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beatmap.difficulty_rating
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) # FIXME: beatmap use decimal
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await Playlist.add_to_db(item, self.room.room_id, session)
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self.room.playlist.append(item)
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await self.hub.playlist_added(self.server_room, item)
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await self.update_order()
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await self.update_current_item()
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async def edit_item(self, item: PlaylistItem, user: MultiplayerRoomUser):
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from app.database import Playlist
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if item.freestyle and len(item.allowed_mods) > 0:
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raise InvokeException("Freestyle items cannot have allowed mods")
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async with AsyncSession(engine) as session:
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async with session:
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beatmap = await session.get(Beatmap, item.beatmap_id)
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if beatmap is None:
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raise InvokeException("Beatmap not found")
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if item.beatmap_checksum != beatmap.checksum:
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raise InvokeException("Checksum mismatch")
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existing_item = next(
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(i for i in self.room.playlist if i.id == item.id), None
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)
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if existing_item is None:
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raise InvokeException(
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"Attempted to change an item that doesn't exist"
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)
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if existing_item.owner_id != user.user_id and self.room.host != user:
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raise InvokeException(
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"Attempted to change an item which is not owned by the user"
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)
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if existing_item.expired:
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raise InvokeException(
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"Attempted to change an item which has already been played"
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)
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# TODO: mods validation
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item.owner_id = user.user_id
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item.star_rating = float(beatmap.difficulty_rating)
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item.playlist_order = existing_item.playlist_order
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await Playlist.update(item, self.room.room_id, session)
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# Update item in playlist
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for idx, playlist_item in enumerate(self.room.playlist):
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if playlist_item.id == item.id:
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self.room.playlist[idx] = item
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break
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await self.hub.playlist_changed(
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self.server_room,
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item,
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beatmap_changed=item.beatmap_checksum
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!= existing_item.beatmap_checksum,
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)
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async def remove_item(self, playlist_item_id: int, user: MultiplayerRoomUser):
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from app.database import Playlist
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item = next(
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(i for i in self.room.playlist if i.id == playlist_item_id),
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None,
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)
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if item is None:
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raise InvokeException("Item does not exist in the room")
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# Check if it's the only item and current item
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if item == self.current_item:
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upcoming_items = [i for i in self.room.playlist if not i.expired]
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if len(upcoming_items) == 1:
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raise InvokeException("The only item in the room cannot be removed")
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if item.owner_id != user.user_id and self.room.host != user:
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raise InvokeException(
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"Attempted to remove an item which is not owned by the user"
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)
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if item.expired:
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raise InvokeException(
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"Attempted to remove an item which has already been played"
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)
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async with AsyncSession(engine) as session:
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await Playlist.delete_item(item.id, self.room.room_id, session)
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self.room.playlist.remove(item)
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self.current_index = self.room.playlist.index(self.upcoming_items[0])
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await self.update_order()
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await self.update_current_item()
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await self.hub.playlist_removed(self.server_room, item.id)
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async def finish_current_item(self):
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from app.database import Playlist
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async with AsyncSession(engine) as session:
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played_at = datetime.now(UTC)
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await session.execute(
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update(Playlist)
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.where(
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col(Playlist.id) == self.current_item.id,
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col(Playlist.room_id) == self.room.room_id,
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)
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.values(expired=True, played_at=played_at)
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)
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self.room.playlist[self.current_index].expired = True
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self.room.playlist[self.current_index].played_at = played_at
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await self.hub.playlist_changed(self.server_room, self.current_item, True)
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await self.update_order()
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if self.room.settings.queue_mode == QueueMode.HOST_ONLY and all(
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playitem.expired for playitem in self.room.playlist
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):
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assert self.room.host
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await self.add_item(self.current_item.clone(), self.room.host)
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async def update_queue_mode(self):
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if self.room.settings.queue_mode == QueueMode.HOST_ONLY and all(
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playitem.expired for playitem in self.room.playlist
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):
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assert self.room.host
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await self.add_item(self.current_item.clone(), self.room.host)
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await self.update_order()
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await self.update_current_item()
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@property
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def current_item(self):
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return self.room.playlist[self.current_index]
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@dataclass
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class CountdownInfo:
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countdown: MultiplayerCountdown
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duration: timedelta
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task: asyncio.Task | None = None
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|
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def __init__(self, countdown: MultiplayerCountdown):
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self.countdown = countdown
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self.duration = (
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countdown.remaining
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if countdown.remaining > timedelta(seconds=0)
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else timedelta(seconds=0)
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)
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class _MatchRequest(SignalRUnionMessage): ...
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|
|
|
|
class ChangeTeamRequest(_MatchRequest):
|
|
union_type: ClassVar[Literal[0]] = 0
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team_id: int
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|
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class StartMatchCountdownRequest(_MatchRequest):
|
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union_type: ClassVar[Literal[1]] = 1
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duration: timedelta
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|
|
|
|
class StopCountdownRequest(_MatchRequest):
|
|
union_type: ClassVar[Literal[2]] = 2
|
|
id: int
|
|
|
|
|
|
MatchRequest = ChangeTeamRequest | StartMatchCountdownRequest | StopCountdownRequest
|
|
|
|
|
|
class MatchTypeHandler(ABC):
|
|
def __init__(self, room: "ServerMultiplayerRoom"):
|
|
self.room = room
|
|
self.hub = room.hub
|
|
|
|
@abstractmethod
|
|
async def handle_join(self, user: MultiplayerRoomUser): ...
|
|
|
|
@abstractmethod
|
|
async def handle_request(
|
|
self, user: MultiplayerRoomUser, request: MatchRequest
|
|
): ...
|
|
|
|
@abstractmethod
|
|
async def handle_leave(self, user: MultiplayerRoomUser): ...
|
|
|
|
|
|
class HeadToHeadHandler(MatchTypeHandler):
|
|
@override
|
|
async def handle_join(self, user: MultiplayerRoomUser):
|
|
if user.match_state is not None:
|
|
user.match_state = None
|
|
await self.hub.change_user_match_state(self.room, user)
|
|
|
|
@override
|
|
async def handle_request(
|
|
self, user: MultiplayerRoomUser, request: MatchRequest
|
|
): ...
|
|
|
|
@override
|
|
async def handle_leave(self, user: MultiplayerRoomUser): ...
|
|
|
|
|
|
class TeamVersusHandler(MatchTypeHandler):
|
|
@override
|
|
def __init__(self, room: "ServerMultiplayerRoom"):
|
|
super().__init__(room)
|
|
self.state = TeamVersusRoomState()
|
|
room.room.match_state = self.state
|
|
task = asyncio.create_task(self.hub.change_room_match_state(self.room))
|
|
self.hub.tasks.add(task)
|
|
task.add_done_callback(self.hub.tasks.discard)
|
|
|
|
def _get_best_available_team(self) -> int:
|
|
for team in self.state.teams:
|
|
if all(
|
|
(
|
|
user.match_state is None
|
|
or not isinstance(user.match_state, TeamVersusUserState)
|
|
or user.match_state.team_id != team.id
|
|
)
|
|
for user in self.room.room.users
|
|
):
|
|
return team.id
|
|
|
|
from collections import defaultdict
|
|
|
|
team_counts = defaultdict(int)
|
|
for user in self.room.room.users:
|
|
if user.match_state is not None and isinstance(
|
|
user.match_state, TeamVersusUserState
|
|
):
|
|
team_counts[user.match_state.team_id] += 1
|
|
|
|
if team_counts:
|
|
min_count = min(team_counts.values())
|
|
for team_id, count in team_counts.items():
|
|
if count == min_count:
|
|
return team_id
|
|
return self.state.teams[0].id if self.state.teams else 0
|
|
|
|
@override
|
|
async def handle_join(self, user: MultiplayerRoomUser):
|
|
best_team_id = self._get_best_available_team()
|
|
user.match_state = TeamVersusUserState(team_id=best_team_id)
|
|
await self.hub.change_user_match_state(self.room, user)
|
|
|
|
@override
|
|
async def handle_request(self, user: MultiplayerRoomUser, request: MatchRequest):
|
|
if not isinstance(request, ChangeTeamRequest):
|
|
return
|
|
|
|
if request.team_id not in [team.id for team in self.state.teams]:
|
|
raise InvokeException("Invalid team ID")
|
|
|
|
user.match_state = TeamVersusUserState(team_id=request.team_id)
|
|
await self.hub.change_user_match_state(self.room, user)
|
|
|
|
@override
|
|
async def handle_leave(self, user: MultiplayerRoomUser): ...
|
|
|
|
|
|
MATCH_TYPE_HANDLERS = {
|
|
MatchType.HEAD_TO_HEAD: HeadToHeadHandler,
|
|
MatchType.TEAM_VERSUS: TeamVersusHandler,
|
|
}
|
|
|
|
|
|
@dataclass
|
|
class ServerMultiplayerRoom:
|
|
room: MultiplayerRoom
|
|
category: RoomCategory
|
|
status: RoomStatus
|
|
start_at: datetime
|
|
hub: "MultiplayerHub"
|
|
match_type_handler: MatchTypeHandler
|
|
queue: MultiplayerQueue
|
|
_next_countdown_id: int
|
|
_countdown_id_lock: asyncio.Lock
|
|
_tracked_countdown: dict[int, CountdownInfo]
|
|
|
|
def __init__(
|
|
self,
|
|
room: MultiplayerRoom,
|
|
category: RoomCategory,
|
|
start_at: datetime,
|
|
hub: "MultiplayerHub",
|
|
):
|
|
self.room = room
|
|
self.category = category
|
|
self.status = RoomStatus.IDLE
|
|
self.start_at = start_at
|
|
self.hub = hub
|
|
self.queue = MultiplayerQueue(self)
|
|
self._next_countdown_id = 0
|
|
self._countdown_id_lock = asyncio.Lock()
|
|
self._tracked_countdown = {}
|
|
|
|
async def set_handler(self):
|
|
self.match_type_handler = MATCH_TYPE_HANDLERS[self.room.settings.match_type](
|
|
self
|
|
)
|
|
for i in self.room.users:
|
|
await self.match_type_handler.handle_join(i)
|
|
|
|
async def get_next_countdown_id(self) -> int:
|
|
async with self._countdown_id_lock:
|
|
self._next_countdown_id += 1
|
|
return self._next_countdown_id
|
|
|
|
async def start_countdown(
|
|
self,
|
|
countdown: MultiplayerCountdown,
|
|
on_complete: Callable[["ServerMultiplayerRoom"], Awaitable[Any]] | None = None,
|
|
):
|
|
async def _countdown_task(self: "ServerMultiplayerRoom"):
|
|
await asyncio.sleep(info.duration.total_seconds())
|
|
await self.stop_countdown(countdown)
|
|
if on_complete is not None:
|
|
await on_complete(self)
|
|
|
|
if countdown.is_exclusive:
|
|
await self.stop_all_countdowns()
|
|
|
|
countdown.id = await self.get_next_countdown_id()
|
|
info = CountdownInfo(countdown)
|
|
self.room.active_countdowns.append(info.countdown)
|
|
self._tracked_countdown[countdown.id] = info
|
|
await self.hub.send_match_event(
|
|
self, CountdownStartedEvent(countdown=info.countdown)
|
|
)
|
|
info.task = asyncio.create_task(_countdown_task(self))
|
|
|
|
async def stop_countdown(self, countdown: MultiplayerCountdown):
|
|
info = next(
|
|
(
|
|
info
|
|
for info in self._tracked_countdown.values()
|
|
if info.countdown.id == countdown.id
|
|
),
|
|
None,
|
|
)
|
|
if info is None:
|
|
return
|
|
if info.task is not None and not info.task.done():
|
|
info.task.cancel()
|
|
del self._tracked_countdown[countdown.id]
|
|
self.room.active_countdowns.remove(countdown)
|
|
await self.hub.send_match_event(self, CountdownStoppedEvent(id=countdown.id))
|
|
|
|
async def stop_all_countdowns(self):
|
|
for countdown in list(self._tracked_countdown.values()):
|
|
await self.stop_countdown(countdown.countdown)
|
|
|
|
self._tracked_countdown.clear()
|
|
self.room.active_countdowns.clear()
|
|
|
|
|
|
class _MatchServerEvent(BaseModel): ...
|
|
|
|
|
|
class CountdownStartedEvent(_MatchServerEvent):
|
|
countdown: MultiplayerCountdown
|
|
|
|
type: Literal[0] = Field(default=0, exclude=True)
|
|
|
|
|
|
class CountdownStoppedEvent(_MatchServerEvent):
|
|
id: int
|
|
|
|
type: Literal[1] = Field(default=1, exclude=True)
|
|
|
|
|
|
MatchServerEvent = CountdownStartedEvent | CountdownStoppedEvent
|
|
|
|
|
|
class GameplayAbortReason(IntEnum):
|
|
LOAD_TOOK_TOO_LONG = 0
|
|
HOST_ABORTED = 1
|