"""回测组合 + 公共配置 Repository Protocol（2026-09 重构）。"""

from __future__ import annotations

from typing import Protocol

from app.domain.entities.combo import BacktestCombo, GlobalConfig


class GlobalConfigRepository(Protocol):
    def get(self) -> GlobalConfig:
        """读取全局配置；不存在则返回带默认值的实例（不写库）。"""

    def save(self, config: GlobalConfig) -> GlobalConfig:
        """upsert 单例（id 恒为 default）。"""


class ComboRepository(Protocol):
    def save(self, combo: BacktestCombo) -> BacktestCombo:
        """新建或更新（name 冲突抛 ValueError）。"""

    def get(self, combo_id: str) -> BacktestCombo | None: ...

    def list(self) -> list[BacktestCombo]: ...

    def delete(self, combo_id: str) -> bool: ...