"""策略 Repository Protocol（M8.3）。"""

from __future__ import annotations

from typing import Protocol

from app.domain.entities.strategy import StrategyDefinition


class StrategyRepository(Protocol):
    def save(self, definition: StrategyDefinition) -> StrategyDefinition:
        """新建（name 冲突抛 ValueError）。"""

    def get(self, strategy_id: str) -> StrategyDefinition | None: ...

    def get_by_name(self, name: str) -> StrategyDefinition | None: ...

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

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