# -*- coding: utf-8 -*-

import json
from redis.asyncio.client import Redis
from fastapi import UploadFile
from redis.asyncio.client import Redis

from app.common.enums import RedisInitKeyConfig
from app.core.database import async_db_session
from app.core.redis_crud import RedisCURD
from app.utils.excel_util import ExcelUtil
from app.utils.upload_util import UploadUtil
from app.core.base_schema import UploadResponseSchema
from app.core.exceptions import CustomException
from app.core.logger import log

from ..auth.schema import AuthSchema
from .schema import ParamsOutSchema, ParamsUpdateSchema, ParamsCreateSchema, ParamsQueryParam
from .crud import ParamsCRUD


class ParamsService:
    """
    配置管理模块服务层
    """
    @classmethod
    async def get_obj_detail_service(cls, auth: AuthSchema, id: int) -> dict:
        """
        获取配置详情
        
        参数:
        - auth (AuthSchema): 认证信息模型
        - id (int): 配置管理型ID
        
        返回:
        - dict: 配置管理型模型实例字典表示
        """
        obj = await ParamsCRUD(auth).get_obj_by_id_crud(id=id)
        return ParamsOutSchema.model_validate(obj).model_dump()
    
    @classmethod
    async def get_obj_by_key_service(cls, auth: AuthSchema, config_key: str) -> dict:
        """
        根据配置键获取配置详情
        
        参数:
        - auth (AuthSchema): 认证信息模型
        - config_key (str): 配置管理型key
        
        返回:
        - Dict: 配置管理型模型实例字典表示
        """
        obj = await ParamsCRUD(auth).get_obj_by_key_crud(key=config_key)
        if not obj:
            raise CustomException(msg=f'配置键 {config_key} 不存在')
        return ParamsOutSchema.model_validate(obj).model_dump()
    
    @classmethod
    async def get_config_value_by_key_service(cls, auth: AuthSchema, config_key: str) -> str | None:
        """
        根据配置键获取配置值
        
        参数:
        - auth (AuthSchema): 认证信息模型
        - config_key (str): 配置管理型key
        
        返回:
        - str | None: 配置值字符串或None
        """
        obj = await ParamsCRUD(auth).get_obj_by_key_crud(key=config_key)
        if not obj:
            raise CustomException(msg=f'配置键 {config_key} 不存在')
        return obj.config_value

    @classmethod
    async def get_obj_list_service(cls, auth: AuthSchema, search: ParamsQueryParam | None = None, order_by: list[dict] | None = None) -> list[dict]:
        """
        获取配置管理型列表
        
        参数:
        - auth (AuthSchema): 认证信息模型
        - search (ParamsQueryParam | None): 查询参数对象
        - order_by (list[dict] | None): 排序参数列表
        
        返回:
        - list[dict]: 配置管理型模型实例字典列表表示
        """
        obj_list = None
        if search:
            obj_list = await ParamsCRUD(auth).get_obj_list_crud(search=search.__dict__, order_by=order_by)
        else:
            obj_list = await ParamsCRUD(auth).get_obj_list_crud()
        return [ParamsOutSchema.model_validate(obj).model_dump() for obj in obj_list]
    
    @classmethod
    async def create_obj_service(cls, auth: AuthSchema, redis: Redis, data: ParamsCreateSchema) -> dict:
        """
        创建配置管理型
        
        参数:
        - auth (AuthSchema): 认证信息模型
        - redis (Redis): Redis 客户端实例
        - data (ParamsCreateSchema): 配置管理型创建模型
        
        返回:
        - dict: 新创建的配置管理型模型实例字典表示
        """
        exist_obj = await ParamsCRUD(auth).get(config_key=data.config_key)
        if exist_obj:
            raise CustomException(msg='创建失败，该配置key已存在')
        obj = await ParamsCRUD(auth).create_obj_crud(data=data)

        new_obj_dict = ParamsOutSchema.model_validate(obj).model_dump()

        # 同步redis
        redis_key = f"{RedisInitKeyConfig.SYSTEM_CONFIG.key}:{data.config_key}"
        try:
            result = await RedisCURD(redis).set(
                key=redis_key,
                value="",
            )
            if not result:
                log.error(f"同步配置到缓存失败: {new_obj_dict}")
                raise CustomException(msg="同步配置到缓存失败")
        except Exception as e:
            log.error(f"创建字典类型失败: {e}")
            raise CustomException(msg=f"创建字典类型失败 {e}")
        
        return new_obj_dict
    
    @classmethod
    async def update_obj_service(cls, auth: AuthSchema, redis: Redis, id:int, data: ParamsUpdateSchema) -> dict:
        """
        更新配置管理型
        
        参数:
        - auth (AuthSchema): 认证信息模型
        - redis (Redis): Redis 客户端实例
        - id (int): 配置管理型ID
        - data (ParamsUpdateSchema): 配置管理型更新模型
        
        返回:
        - Dict: 更新后的配置管理型模型实例字典表示
        """
        exist_obj = await ParamsCRUD(auth).get_obj_by_id_crud(id=id)
        if not exist_obj:
            raise CustomException(msg='更新失败，该数系统配置不存在')
        if exist_obj.config_key != data.config_key:
            raise CustomException(msg='更新失败，系统配置key不允许修改')
        
        new_obj = await ParamsCRUD(auth).update_obj_crud(id=id, data=data)
        if not new_obj:
            raise CustomException(msg='更新失败，系统配置不存在')
        new_obj_dict = ParamsOutSchema.model_validate(new_obj).model_dump()

        # 同步redis
        redis_key = f"{RedisInitKeyConfig.SYSTEM_CONFIG.key}:{new_obj.config_key}"
        try:
            value = json.dumps(new_obj_dict, ensure_ascii=False)
            result = await RedisCURD(redis).set(
                key=redis_key,
                value=value,
            )
            if not result:
                log.error(f"同步配置到缓存失败: {new_obj_dict}")
                raise CustomException(msg="同步配置到缓存失败")
        except Exception as e:
            log.error(f"更新系统配置失败: {e}")
            raise CustomException(msg="更新系统配置失败")

        return new_obj_dict

    @classmethod
    async def delete_obj_service(cls, auth: AuthSchema, redis: Redis, ids: list[int]) -> None:
        """
        删除配置管理型
        
        参数:
        - auth (AuthSchema): 认证信息模型
        - redis (Redis): Redis 客户端实例
        - ids (list[int]): 配置管理型ID列表
        
        返回:
        - None
        """
        if len(ids) < 1:
            raise CustomException(msg='删除失败，删除对象不能为空')
        for id in ids:
            exist_obj = await ParamsCRUD(auth).get_obj_by_id_crud(id=id)
            if not exist_obj:
                raise CustomException(msg='删除失败，该数据字典类型不存在')
            # 检查是否是否初始化类型
            if exist_obj.config_type:
                # 如果有字典数据，不能删除
                raise CustomException(msg=f'{exist_obj.config_name} 删除失败，系统初始化配置不可以删除')
        
        await ParamsCRUD(auth).delete_obj_crud(ids=ids)
        
        # 同步删除Redis缓存
        for id in ids:
            exist_obj = await ParamsCRUD(auth).get_obj_by_id_crud(id=id)
            if not exist_obj:
                continue
            redis_key = f"{RedisInitKeyConfig.SYSTEM_CONFIG.key}:{exist_obj.config_key}"
            try:
                await RedisCURD(redis).delete(redis_key)
                log.info(f"删除系统配置成功: {id}")
            except Exception as e:
                log.error(f"删除系统配置失败: {e}")
                raise CustomException(msg="删除字典类型失败")
    
    @classmethod
    async def export_obj_service(cls, data_list: list[dict]) -> bytes:
        """
        导出系统配置列表
        
        参数:
        - data_list (list[dict]): 系统配置模型实例字典列表表示
        
        返回:
        - bytes: Excel文件二进制数据
        """
        mapping_dict = {
            'id': '编号',
            'config_name': '参数名称', 
            'config_key': '参数键名',
            'config_value': '参数键值',
            'config_type': '系统内置((True:是 False:否))',
            'description': '备注',
            'created_time': '创建时间',
            'updated_time': '更新时间',
            'created_id': '创建者ID',
            'updated_id': '更新者ID',
        }

        # 复制数据并转换状态
        data = data_list.copy()
        for item in data:
            # 处理状态
            item['config_type'] = '是' if item.get('config_type') else '否'
            item['creator'] = item.get('creator', {}).get('name', '未知') if isinstance(item.get('creator'), dict) else '未知'

        return ExcelUtil.export_list2excel(list_data=data, mapping_dict=mapping_dict)
    
    @classmethod
    async def upload_service(cls, base_url: str, file: UploadFile) -> dict:
        """
        上传文件
        
        参数:
        - base_url (str): 基础URL
        - file (UploadFile): 上传的文件对象
        
        返回:
        - dict: 上传文件的响应模型实例字典表示
        """
        filename, filepath, file_url = await UploadUtil.upload_file(file=file, base_url=base_url)
        
        return UploadResponseSchema(
            file_path=f'{filepath}',
            file_name=filename,
            origin_name=file.filename,
            file_url=f'{file_url}',
        ).model_dump()

    @classmethod
    async def init_config_service(cls, redis: Redis) -> None:
        """
        初始化系统配置
        
        参数:
        - redis (Redis): Redis 客户端实例
        
        返回:
        - None
        """
        async with async_db_session() as session:
            async with session.begin():
                # 在初始化过程中，不需要检查数据权限
                auth = AuthSchema(db=session, check_data_scope=False)
                config_obj = await ParamsCRUD(auth).get_obj_list_crud()
                if not config_obj:
                    raise CustomException(msg="系统配置不存在")
                try:
                    # 保存到Redis并设置过期时间
                    for config in config_obj:
                        redis_key = (f"{RedisInitKeyConfig.SYSTEM_CONFIG.key}:{config.config_key}")
                        config_obj_dict = ParamsOutSchema.model_validate(config).model_dump()
                        value = json.dumps(config_obj_dict, ensure_ascii=False)
                        result = await RedisCURD(redis).set(
                            key=redis_key,
                            value=value,
                        )
                        log.info(f"✅ 系统配置缓存成功: {config.config_key}")
                        if not result:
                            log.error(f"❌️ 初始化系统配置失败: {config_obj_dict}")
                            raise CustomException(msg="初始化系统配置失败")
                except Exception as e:
                    log.error(f"❌️ 初始化系统配置失败: {e}")
                    raise CustomException(msg="初始化系统配置失败")

    @classmethod
    async def get_init_config_service(cls, redis: Redis) -> list[dict]:
        """
        获取系统配置
        
        参数:
        - redis (Redis): Redis 客户端实例
        
        返回:
        - list[dict]: 系统配置模型实例字典列表表示
        """
        redis_keys = await RedisCURD(redis).get_keys(f"{RedisInitKeyConfig.SYSTEM_CONFIG.key}:*")
        redis_configs = await RedisCURD(redis).mget(redis_keys)
        configs = []
        for config in redis_configs:
            if not config:
                continue
            try:
                new_config = json.loads(config)  
                configs.append(new_config)
            except Exception as e:
                log.error(f"解析系统配置数据失败: {e}")
                continue
        
        return configs
    
    @classmethod
    async def get_system_config_for_middleware(cls, redis: Redis) -> dict:
        """
        获取中间件所需的系统配置
        
        参数:
        - redis (Redis): Redis 客户端实例
        
        返回:
        - dict: 包含演示模式、IP白名单、API白名单和IP黑名单的配置字典
        """
        # 定义需要获取的配置键
        config_keys = [
            f"{RedisInitKeyConfig.SYSTEM_CONFIG.key}:demo_enable",
            f"{RedisInitKeyConfig.SYSTEM_CONFIG.key}:ip_white_list",
            f"{RedisInitKeyConfig.SYSTEM_CONFIG.key}:white_api_list_path",
            f"{RedisInitKeyConfig.SYSTEM_CONFIG.key}:ip_black_list"
        ]
        
        # 批量获取配置
        config_values = await RedisCURD(redis).mget(config_keys)
        
        # 初始化默认配置
        config_result = {
            "demo_enable": False,
            "ip_white_list": [],
            "white_api_list_path": [],
            "ip_black_list": []
        }
        
        # 解析演示模式配置
        if config_values[0]:
            try:
                demo_config = json.loads(config_values[0])
                config_result["demo_enable"] = demo_config.get("config_value", False) if isinstance(demo_config, dict) else False
            except json.JSONDecodeError:
                log.error(f"解析演示模式配置失败")
        
        # 解析IP白名单配置
        if config_values[1]:
            
            try:
                ip_white_config = json.loads(config_values[1])
                # 确保是列表类型
                config_result["ip_white_list"] = json.loads(ip_white_config.get("config_value", [])) 
            except json.JSONDecodeError:
                log.error(f"解析IP白名单配置失败")
        # 解析IP黑名单
        # 解析API路径白名单
        if config_values[2]:
            try:
                white_api_config = json.loads(config_values[2])
                # 确保是列表类型
                config_result["white_api_list_path"] = json.loads(white_api_config.get("config_value", []))
            except json.JSONDecodeError:
                log.error(f"解析API白名单配置失败")
        
        # 解析IP黑名单
        if config_values[3]:
            try:
                black_ip_config = json.loads(config_values[3])
                # 确保是列表类型
                config_result["ip_black_list"] = json.loads(black_ip_config.get("config_value", []))
            except json.JSONDecodeError:
                log.error(f"解析IP黑名单配置失败")
        return config_result