from typing import Tuple, Union

from app.core.config import settings
from app.db import SessionFactory
from app.modules import _ModuleBase
from app.schemas.types import ModuleType, OtherModulesType
from sqlalchemy import text


class PostgreSQLModule(_ModuleBase):
    """
    PostgreSQL 数据库模块
    """

    def init_module(self) -> None:
        pass

    @staticmethod
    def get_name() -> str:
        return "PostgreSQL"

    @staticmethod
    def get_type() -> ModuleType:
        """
        获取模块类型
        """
        return ModuleType.Other

    @staticmethod
    def get_subtype() -> OtherModulesType:
        """
        获取模块子类型
        """
        return OtherModulesType.PostgreSQL

    @staticmethod
    def get_priority() -> int:
        """
        获取模块优先级，数字越小优先级越高，只有同一接口下优先级才生效
        """
        return 0

    def init_setting(self) -> Tuple[str, Union[str, bool]]:
        pass

    def stop(self) -> None:
        pass

    def test(self):
        """
        测试模块连接性
        """
        if settings.DB_TYPE != "postgresql":
            return None
        # 测试数据库连接
        db = SessionFactory()
        try:
            db.execute(text("SELECT 1"))
        except Exception as e:
            return False, f"PostgreSQL连接失败：{e}"
        finally:
            db.close()
        return True, ""