from datetime import datetime, timedelta
from typing import Any

from sqlalchemy import delete
from sqlalchemy.ext.asyncio import AsyncSession

from app.config.setting import settings
from app.core.base_schema import AuthSchema, PageResultSchema
from app.core.database import async_db_session
from app.core.exceptions import CustomException
from app.core.logger import logger
from app.utils.common_util import search_to_dict
from app.utils.excel_util import ExcelUtil

from .crud import LoginLogCRUD, OperationLogCRUD
from .model import OperationLogModel
from .schema import (
    LoginLogDetailOutSchema,
    LoginLogOutSchema,
    LoginLogQueryParam,
    OperationLogDetailOutSchema,
    OperationLogOutSchema,
    OperationLogQueryParam,
)


class LoginLogService:
    """登录日志管理服务"""

    def __init__(self, auth: AuthSchema, db: AsyncSession) -> None:
        self.auth = auth
        self.db = db

    async def detail(self, id: int) -> LoginLogDetailOutSchema:
        obj = await LoginLogCRUD(self.auth, self.db).get_or_404(id=id)
        return LoginLogDetailOutSchema.model_validate(obj)

    async def page(
        self,
        page_no: int,
        page_size: int,
        search: LoginLogQueryParam | None = None,
        order_by: list[dict[str, str]] | None = None,
    ) -> PageResultSchema[LoginLogOutSchema]:
        return await LoginLogCRUD(self.auth, self.db).page(
            offset=(page_no - 1) * page_size,
            limit=page_size,
            order_by=order_by or [{"updated_time": "desc"}],
            search=search_to_dict(search),
            out_schema=LoginLogOutSchema,
        )

    async def delete(self, ids: list[int]) -> None:
        if not ids:
            raise CustomException(msg="删除失败，删除对象不能为空")

        existing = await LoginLogCRUD(self.auth, self.db).get_list(search={"id": ("in", ids)})
        existing_map = {obj.id for obj in existing}
        for nid in ids:
            if nid not in existing_map:
                raise CustomException(msg=f"删除失败，ID为{nid}的数据不存在")

        await LoginLogCRUD(self.auth, self.db).delete(ids=ids)


class OperationLogService:
    """操作日志管理服务"""

    def __init__(self, auth: AuthSchema, db: AsyncSession) -> None:
        self.auth = auth
        self.db = db

    @staticmethod
    async def cleanup_operation_log() -> bool:
        from .model import LoginLogModel

        retention_days = settings.OPERATION_LOG_RETENTION_DAYS

        cutoff = datetime.now() - timedelta(days=retention_days)
        async with async_db_session() as session:
            op_stmt = delete(OperationLogModel).where(OperationLogModel.created_time < cutoff)
            op_result: Any = await session.execute(op_stmt)

            login_stmt = delete(LoginLogModel).where(LoginLogModel.created_time < cutoff)
            login_result: Any = await session.execute(login_stmt)

            await session.commit()
            logger.info(f"操作日志清理完成: 操作日志 {op_result.rowcount} 条, 登录日志 {login_result.rowcount} 条")
            return True

    async def page(
        self,
        page_no: int,
        page_size: int,
        search: OperationLogQueryParam | None = None,
        order_by: list[dict[str, str]] | None = None,
    ) -> PageResultSchema[OperationLogOutSchema]:
        crud = OperationLogCRUD(self.auth, self.db)
        return await crud.page(
            offset=(page_no - 1) * page_size,
            limit=page_size,
            order_by=order_by or [{"id": "desc"}],
            search=search_to_dict(search),
            out_schema=OperationLogOutSchema,
        )

    async def detail(self, id: int) -> OperationLogDetailOutSchema:
        crud = OperationLogCRUD(self.auth, self.db)
        obj = await crud.get_or_404(id=id)
        return OperationLogDetailOutSchema.model_validate(obj)

    async def delete(self, ids: list[int]) -> None:
        if not ids:
            raise CustomException(msg="删除失败，删除对象不能为空")
        existing = await OperationLogCRUD(self.auth, self.db).get_list(search={"id": ("in", ids)})
        existing_map = {obj.id for obj in existing}
        for nid in ids:
            if nid not in existing_map:
                raise CustomException(msg="删除失败，该数据不存在")
        crud = OperationLogCRUD(self.auth, self.db)
        await crud.delete(ids=ids)

    async def get_list(
        self,
        search: OperationLogQueryParam | None = None,
        order_by: list[dict[str, str]] | None = None,
    ) -> list[OperationLogOutSchema]:
        crud = OperationLogCRUD(self.auth, self.db)
        obj_list = await crud.get_list(
            search=search_to_dict(search),
            order_by=order_by or [{"id": "desc"}],
        )
        return [OperationLogOutSchema.model_validate(obj) for obj in obj_list]

    @staticmethod
    def export_list(operation_log_list: list[dict[str, Any]]) -> bytes:
        """导出操作日志列表"""
        mapping_dict = {
            "id": "日志编号",
            "request_path": "请求路径",
            "request_method": "请求方法",
            "request_ip": "请求IP",
            "request_payload": "请求参数",
            "response_code": "响应状态码",
            "process_time": "耗时(ms)",
            "created_time": "操作时间",
            "created_id": "操作用户ID",
        }
        return ExcelUtil.export_list2excel(list_data=operation_log_list, mapping_dict=mapping_dict)