# backend/app/core/structures.py from dataclasses import dataclass, field from typing import Optional from ..constants import BracketTypes @dataclass class Match: id: int bracket_type: BracketTypes round_number: int next_win: Optional["Match"] = None next_loss: Optional["Match"] = None next_win_slot: int = 0 next_loss_slot: int = 0 teams: list[Optional[int]] = field(default_factory=lambda: [None, None]) is_bye: bool = False ghost_count: int = 0