import json
from typing import Optional, Union, List, Tuple, Any, Dict

from app.core.context import MediaInfo, Context
from app.log import logger
from app.modules import _ModuleBase, _MessageBase
from app.modules.telegram.telegram import Telegram
from app.schemas import MessageChannel, CommingMessage, Notification
from app.schemas.types import ModuleType


class TelegramModule(_ModuleBase, _MessageBase[Telegram]):

    def init_module(self) -> None:
        """
        初始化模块
        """
        super().init_service(service_name=Telegram.__name__.lower(),
                             service_type=Telegram)
        self._channel = MessageChannel.Telegram

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

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

    @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 stop(self):
        """
        停止模块
        """
        for client in self.get_instances().values():
            client.stop()

    def test(self) -> Optional[Tuple[bool, str]]:
        """
        测试模块连接性
        """
        if not self.get_instances():
            return None
        for name, client in self.get_instances().items():
            state = client.get_state()
            if not state:
                return False, f"Telegram {name} 未就续"
        return True, ""

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

    def message_parser(self, source: str, body: Any, form: Any,
                       args: Any) -> Optional[CommingMessage]:
        """
        解析消息内容，返回字典，注意以下约定值：
        userid: 用户ID
        username: 用户名
        text: 内容
        :param source: 消息来源
        :param body: 请求体
        :param form: 表单
        :param args: 参数
        :return: 渠道、消息体
        """
        """
            {
                'update_id': ,
                'message': {
                    'message_id': ,
                    'from': {
                        'id': ,
                        'is_bot': False,
                        'first_name': '',
                        'username': '',
                        'language_code': 'zh-hans'
                    },
                    'chat': {
                        'id': ,
                        'first_name': '',
                        'username': '',
                        'type': 'private'
                    },
                    'date': ,
                    'text': ''
                }
            }
        """
        # 获取渠道
        client_config = None
        if source:
            client_config = self.get_config(source)
        else:
            client_configs = self.get_configs()
            if client_configs:
                client_config = list(client_configs.values())[0]
        if not client_config:
            return None
        client: Telegram = self.get_instance(client_config.name)
        try:
            message: dict = json.loads(body)
        except Exception as err:
            logger.debug(f"解析Telegram消息失败：{str(err)}")
            return None
        if message:
            text = message.get("text")
            user_id = message.get("from", {}).get("id")
            # 获取用户名
            user_name = message.get("from", {}).get("username")
            if text:
                logger.info(f"收到来自 {client_config.name} 的Telegram消息："
                            f"userid={user_id}, username={user_name}, text={text}")
                # 检查权限
                admin_users = client_config.config.get("TELEGRAM_ADMINS")
                user_list = client_config.config.get("TELEGRAM_USERS")
                chat_id = client_config.config.get("TELEGRAM_CHAT_ID")
                if text.startswith("/"):
                    if admin_users \
                            and str(user_id) not in admin_users.split(',') \
                            and str(user_id) != chat_id:
                        client.send_msg(title="只有管理员才有权限执行此命令", userid=user_id)
                        return None
                else:
                    if user_list \
                            and not str(user_id) in user_list.split(','):
                        logger.info(f"用户{user_id}不在用户白名单中，无法使用此机器人")
                        client.send_msg(title="你不在用户白名单中，无法使用此机器人", userid=user_id)
                        return None
                return CommingMessage(channel=MessageChannel.Telegram, source=client_config.name,
                                      userid=user_id, username=user_name, text=text)
        return None

    def post_message(self, message: Notification) -> None:
        """
        发送消息
        :param message: 消息体
        :return: 成功或失败
        """
        for conf in self.get_configs().values():
            if not self.check_message(message, conf.name):
                continue
            targets = message.targets
            userid = message.userid
            if not userid and targets is not None:
                userid = targets.get('telegram_userid')
                if not userid:
                    logger.warn(f"用户没有指定 Telegram用户ID，消息无法发送")
                    return
            client: Telegram = self.get_instance(conf.name)
            if client:
                client.send_msg(title=message.title, text=message.text,
                                image=message.image, userid=userid, link=message.link)

    def post_medias_message(self, message: Notification, medias: List[MediaInfo]) -> None:
        """
        发送媒体信息选择列表
        :param message: 消息体
        :param medias: 媒体列表
        :return: 成功或失败
        """
        for conf in self.get_configs().values():
            if not self.check_message(message, conf.name):
                continue
            client: Telegram = self.get_instance(conf.name)
            if client:
                client.send_medias_msg(title=message.title, medias=medias,
                                       userid=message.userid, link=message.link)

    def post_torrents_message(self, message: Notification, torrents: List[Context]) -> None:
        """
        发送种子信息选择列表
        :param message: 消息体
        :param torrents: 种子列表
        :return: 成功或失败
        """
        for conf in self.get_configs().values():
            if not self.check_message(message, conf.name):
                continue
            client: Telegram = self.get_instance(conf.name)
            if client:
                client.send_torrents_msg(title=message.title, torrents=torrents,
                                         userid=message.userid, link=message.link)

    def register_commands(self, commands: Dict[str, dict]):
        """
        注册命令，实现这个函数接收系统可用的命令菜单
        :param commands: 命令字典
        """
        for client in self.get_instances().values():
            client.register_commands(commands)