"""选股策略 Repository Protocol。"""

from __future__ import annotations

from typing import Protocol

from app.domain.entities.strategy import SelectionStrategy


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

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

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

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

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