"""
焕影小程序功能服务端的基本工具函数,以类的形式封装
"""
try:  # 加上这个try的原因在于本地环境和云函数端的import形式有所不同
    from qcloud_cos import CosConfig
    from qcloud_cos import CosS3Client
except ImportError:
    try:
        from qcloud_cos_v5 import CosConfig
        from qcloud_cos_v5 import CosS3Client
    except ImportError:
        raise ImportError("请下载腾讯云COS相关代码包:pip install cos-python-sdk-v5")
import requests
import datetime
import json
from .error import ProcessError
import os
local_path_ = os.path.dirname(__file__)


class GetConfig(object):
    @staticmethod
    def hy_sdk_client(Id:str, Key:str):
        # 从cos中寻找文件
        REGION: str = 'ap-beijing'
        TOKEN = None
        SCHEME: str = 'https'
        BUCKET: str = 'hy-sdk-config-1305323352'
        client_config = CosConfig(Region=REGION,
                                  SecretId=Id,
                                  SecretKey=Key,
                                  Token=TOKEN,
                                  Scheme=SCHEME)
        return CosS3Client(client_config), BUCKET

    def load_json(self, path:str, default_download=False):
        try:
            if os.path.isdir(path):
                raise ProcessError("请输入具体的配置文件路径,而非文件夹!")
            if default_download is True:
                print(f"\033[34m 默认强制重新下载配置文件...\033[0m")
                raise FileNotFoundError
            with open(path) as f:
                config = json.load(f)
                return config
        except FileNotFoundError:
            dir_name = os.path.dirname(path)
            try:
                os.makedirs(dir_name)
            except FileExistsError:
                pass
            base_name = os.path.basename(path)
            print(f"\033[34m 正在从COS中下载配置文件...\033[0m")
            print(f"\033[31m 请注意,接下来会在{dir_name}路径下生成文件{base_name}...\033[0m")
            Id = input("请输入SecretId:")
            Key = input("请输入SecretKey:")
            client, bucket = self.hy_sdk_client(Id, Key)
            data_bytes = client.get_object(Bucket=bucket,Key=base_name)["Body"].get_raw_stream().read()
            data = json.loads(data_bytes.decode("utf-8"))
            # data["SecretId"] = Id  # 未来可以把这个加上
            # data["SecretKey"] = Key
            with open(path, "w") as f:
                data_str = json.dumps(data, ensure_ascii=False)
                # 如果 ensure_ascii 是 true (即默认值),输出保证将所有输入的非 ASCII 字符转义。
                # 如果 ensure_ascii 是 false，这些字符会原样输出。
                f.write(data_str)
                f.close()
            print(f"\033[32m 配置文件保存成功\033[0m")
            return data
        except json.decoder.JSONDecodeError:
            print(f"\033[31m WARNING: 配置文件为空!\033[0m")
            return {}

    def load_file(self, cloud_path:str, local_path:str):
        """
        从COS中下载文件到本地,本函数将会被默认执行的,在使用的时候建议加一些限制.
        :param cloud_path: 云端的文件路径
        :param local_path: 将云端文件保存在本地的路径
        """
        if os.path.isdir(cloud_path):
            raise ProcessError("请输入具体的云端文件路径,而非文件夹!")
        if os.path.isdir(local_path):
            raise ProcessError("请输入具体的本地文件路径,而非文件夹!")
        dir_name = os.path.dirname(local_path)
        base_name = os.path.basename(local_path)
        try:
            os.makedirs(dir_name)
        except FileExistsError:
            pass
        cloud_name = os.path.basename(cloud_path)
        print(f"\033[31m 请注意,接下来会在{dir_name}路径下生成文件{base_name}\033[0m")
        Id = input("请输入SecretId:")
        Key = input("请输入SecretKey:")
        client, bucket = self.hy_sdk_client(Id, Key)
        print(f"\033[34m 正在从COS中下载文件: {cloud_name}, 此过程可能耗费一些时间...\033[0m")
        data_bytes = client.get_object(Bucket=bucket,Key=cloud_path)["Body"].get_raw_stream().read()
        # data["SecretId"] = Id  # 未来可以把这个加上
        # data["SecretKey"] = Key
        with open(local_path, "wb") as f:
            # 如果 ensure_ascii 是 true (即默认值),输出保证将所有输入的非 ASCII 字符转义。
            # 如果 ensure_ascii 是 false，这些字符会原样输出。
            f.write(data_bytes)
            f.close()
        print(f"\033[32m 文件保存成功\033[0m")


class CosConf(GetConfig):
    """
    从安全的角度出发,将一些默认配置文件上传至COS中,接下来使用COS和它的子类的时候,在第一次使用时需要输入Cuny给的id和key
    用于连接cos存储桶,下载配置文件.
    当然,在service_default_download = False的时候,如果在运行路径下已经有conf/service_config.json文件了,
    那么就不用再次下载了,也不用输入id和key
    事实上这只需要运行一次,因为配置文件将会被下载至源码文件夹中
    如果要自定义路径,请在继承的子类中编写__init__函数,将service_path定向到指定路径
    """
    def __init__(self) -> None:
        # 下面这些参数是类的共享参数
        self.__SECRET_ID: str = None  # 服务的id
        self.__SECRET_KEY: str = None  # 服务的key
        self.__REGION: str = None  # 服务的存储桶地区
        self.__TOKEN: str = None  # 服务的token,目前一直是None
        self.__SCHEME: str = None  # 服务的访问协议,默认实际上是https
        self.__BUCKET: str = None  # 服务的存储桶
        self.__SERVICE_CONFIG: dict = None  # 服务的配置文件
        self.service_path: str = f"{local_path_}/conf/service_config.json"
        # 配置文件路径,默认是函数运行的路径下的conf文件夹
        self.service_default_download = False  # 是否在每次访问配置的时候都重新下载文件

    @property
    def service_config(self):
        if self.__SERVICE_CONFIG is None or self.service_default_download is True:
            self.__SERVICE_CONFIG = self.load_json(self.service_path, self.service_default_download)
        return self.__SERVICE_CONFIG

    @property
    def client(self):
        client_config = CosConfig(Region=self.region,
                                  SecretId=self.secret_id,
                                  SecretKey=self.secret_key,
                                  Token=self.token,
                                  Scheme=self.scheme)
        return CosS3Client(client_config)

    def get_key(self, key:str):
        try:
            data = self.service_config[key]
            if data == "None":
                return None
            else:
                return data
        except KeyError:
            print(f"\033[31m没有对应键值{key},默认返回None\033[0m")
            return None

    @property
    def secret_id(self):
        if self.__SECRET_ID is None:
            self.__SECRET_ID = self.get_key("SECRET_ID")
        return self.__SECRET_ID

    @secret_id.setter
    def secret_id(self, value:str):
        self.__SECRET_ID = value

    @property
    def secret_key(self):
        if self.__SECRET_KEY is None:
            self.__SECRET_KEY = self.get_key("SECRET_KEY")
        return self.__SECRET_KEY

    @secret_key.setter
    def secret_key(self, value:str):
        self.__SECRET_KEY = value

    @property
    def region(self):
        if self.__REGION is None:
            self.__REGION = self.get_key("REGION")
        return self.__REGION

    @region.setter
    def region(self, value:str):
        self.__REGION = value

    @property
    def token(self):
        # if self.__TOKEN is None:
        #     self.__TOKEN = self.get_key("TOKEN")
        # 这里可以注释掉
        return self.__TOKEN

    @token.setter
    def token(self, value:str):
        self.__TOKEN= value

    @property
    def scheme(self):
        if self.__SCHEME is None:
            self.__SCHEME = self.get_key("SCHEME")
        return self.__SCHEME

    @scheme.setter
    def scheme(self, value:str):
        self.__SCHEME = value

    @property
    def bucket(self):
        if self.__BUCKET is None:
            self.__BUCKET = self.get_key("BUCKET")
        return self.__BUCKET

    @bucket.setter
    def bucket(self, value):
        self.__BUCKET = value

    def downloadFile_COS(self, key, bucket:str=None, if_read:bool=False):
        """
        从COS下载对象(二进制数据), 如果下载失败就返回None
        """
        CosBucket = self.bucket if bucket is None else bucket
        try:
            # 将本类的Debug继承给抛弃了
            # self.debug_print(f"Download from {CosBucket}", font_color="blue")
            obj = self.client.get_object(
                Bucket=CosBucket,
                Key=key
            )
            if if_read is True:
                data = obj["Body"].get_raw_stream().read()  # byte
                return data
            else:
                return obj
        except Exception as e:
            print(f"\033[31m下载失败! 错误描述:{e}\033[0m")
            return None

    def showFileList_COS_base(self, key, bucket, marker:str=""):
        """
        返回cos存储桶内部的某个文件夹的内部名称
        :param key: cos云端的存储路径
        :param bucket: cos存储桶名称，如果没指定名称（None）就会寻找默认的存储桶
        :param marker: 标记,用于记录上次查询到哪里了
        ps:如果需要修改默认的存储桶配置，请在代码运行的时候加入代码 s.bucket = 存储桶名称 （s是对象实例）
        返回的内容存储在response["Content"]，不过返回的数据大小是有限制的，具体内容还是请看官方文档。
        """
        response = self.client.list_objects(
            Bucket=bucket,
            Prefix=key,
            Marker=marker
        )
        return response

    def showFileList_COS(self, key, bucket:str=None)->list:
        """
        实现查询存储桶中所有对象的操作，因为cos的sdk有返回数据包大小的限制，所以我们需要进行一定的改动
        """
        marker = ""
        file_list = []
        CosBucket = self.bucket if bucket is None else bucket
        while True:  # 轮询
            response = self.showFileList_COS_base(key, CosBucket, marker)
            try:
                file_list.extend(response["Contents"])
            except KeyError as e:
                print(e)
                raise
            if response['IsTruncated'] == 'false':  # 接下来没有数据了,就退出
                break
            marker = response['NextMarker']
        return file_list

    def uploadFile_COS(self, buffer, key, bucket:str=None):
        """
        从COS上传数据,需要注意的是必须得是二进制文件
        """
        CosBucket = self.bucket if bucket is None else bucket
        try:
            self.client.put_object(
                Bucket=CosBucket,
                Body=buffer,
                Key=key
            )
            return True
        except Exception as e:
            print(e)
            return False


class FuncDiary(CosConf):
    filter_dict = {"60a5e13da00e6e0001fd53c8": "Cuny",
                   "612c290f3a9af4000170faad": "守望平凡",
                   "614de96e1259260001506d6c": "林泽毅-焕影一新"}

    def __init__(self, func_name: str, uid: str, error_conf_path: str = f"{local_path_}/conf/func_error_conf.json"):
        """
        日志类的实例化
        Args:
            func_name: 功能名称，影响了日志投递的路径
        """
        super().__init__()
        # 配置文件路径,默认是函数运行的路径下的conf文件夹
        self.service_path: str = os.path.join(os.path.dirname(error_conf_path), "service_config.json")
        self.error_dict = self.load_json(path=error_conf_path)
        self.__up: str = f"wx/invokeFunction_c/{datetime.datetime.now().strftime('%Y/%m/%d/%H')}/{func_name}/"
        self.func_name: str = func_name
        # 下面这个属性是的日志名称的前缀
        self.__start_time = datetime.datetime.now().timestamp()
        h_point = datetime.datetime.strptime(datetime.datetime.now().strftime('%Y/%m/%d/%H'), '%Y/%m/%d/%H')
        h_point_timestamp = h_point.timestamp()
        self.__prefix = int(self.__start_time - h_point_timestamp).__str__() + "_"
        self.__uid = uid
        self.__diary = None

    def __str__(self):
        return f"<{self.func_name}> DIARY for {self.__uid}"

    @property
    def content(self):
        return self.__diary

    @content.setter
    def content(self, value: str):
        if not isinstance(value, dict):
            raise TypeError("content 只能是字典！")
        if "status" in value:
            raise KeyError("status字段已被默认占用，请在日志信息中更换字段名称!")
        if self.__diary is None:
            self.__diary = value
        else:
            raise PermissionError("为了减小日志对整体代码的影响，<content>只能被覆写一次！")

    def uploadDiary_COS(self, status_id: str, suffix: str = "", bucket: str = "hy-hcy-data-logs-1306602019"):
        if self.__diary is None:
            self.__diary = {"status": self.error_dict[status_id]}
        if status_id == "0000":
            self.__up += f"True/{self.__uid}/"
        else:
            self.__up += f"False/{self.__uid}/"
        interval = int(10 * (datetime.datetime.now().timestamp() - self.__start_time))
        prefix = self.__prefix + status_id + "_" + interval.__str__()
        self.__diary["status"] = self.error_dict[status_id]
        name = prefix + "_" + suffix if len(suffix) != 0 else prefix
        self.uploadFile_COS(buffer=json.dumps(self.__diary), key=self.__up + name, bucket=bucket)
        print(f"{self}上传成功.")


class ResponseWebSocket(CosConf):
    # 网关推送地址
    __HOST:str = None
    @property
    def sendBackHost(self):
        if self.__HOST is None:
            self.__HOST = self.get_key("HOST")
        return self.__HOST

    @sendBackHost.setter
    def sendBackHost(self, value):
        self.__HOST = value

    def sendMsg_toWebSocket(self, message,connectionID:str = None):
        if connectionID is not None:
            retmsg = {'websocket': {}}
            retmsg['websocket']['action'] = "data send"
            retmsg['websocket']['secConnectionID'] = connectionID
            retmsg['websocket']['dataType'] = 'text'
            retmsg['websocket']['data'] = json.dumps(message)
            requests.post(self.sendBackHost, json=retmsg)
            print("send success!")
        else:
            pass

    @staticmethod
    def create_Msg(status, msg):
        """
        本方法用于创建一个用于发送到WebSocket客户端的数据
        输入的信息部分,需要有如下几个参数:
        1. id,固定为"return-result"
        2. status,如果输入为1则status=true, 如果输入为-1则status=false
        3. obj_key, 图片的云端路径, 这是输入的msg本身自带的
        """
        msg['status'] = "false" if status == -1 else 'true'  # 其实最好还是用bool
        msg['id'] = "async-back-msg"
        msg['type'] = "funcType"
        msg["format"] = "imageType"
        return msg


# 功能服务类
class Service(ResponseWebSocket):
    """
    服务的主函数,封装了cos上传/下载功能以及与api网关的一键通讯
    将类的实例变成一个可被调用的对象,在服务运行的时候,只需要运行该对象即可
    当然,因为是类,所以支持继承和修改
    """
    @classmethod
    def process(cls, *args, **kwargs):
        """
        处理函数,在使用的时候请将之重构
        """
        pass

    @classmethod
    def __call__(cls, *args, **kwargs):
        pass