import logging
import re
import tomllib
import os
import traceback
import requests
from typing import Dict, Any

from wcferry import WxMsg, Wcf

from robot_cmd.robot_command import GroupBotManager, Feature, PermissionStatus


class DouyinParserError(Exception):
    """抖音解析器自定义异常基类"""
    pass


class DouyinParser:
    description = "抖音无水印解析插件"
    author = "姜不吃先生"
    version = "1.0.2"

    def __init__(self, wcf: Wcf, gbm: GroupBotManager):
        self.url_pattern = re.compile(r'https?://v\.douyin\.com/\w+/?')
        self.LOG = logging.getLogger(__name__)
        self.wcf = wcf
        self.gbm = gbm
        with open("douyin_parser/config.toml", "rb") as f:
            plugin_config = tomllib.load(f)

        config = plugin_config["Video"]

        basic_config = config.get("Douyin", {})
        self.enable = basic_config.get("enable", True)
        self.http_proxy = basic_config.get("http_proxy", None)
        self.LOG.debug("[抖音] 插件初始化完成，代理设置: %s", self.http_proxy)

    def _clean_response_data(self, data: Dict[str, Any]) -> Dict[str, Any]:
        if not data:
            return data
        data['cover'] = "https://is1-ssl.mzstatic.com/image/thumb/Purple221/.../512x512bb.jpg"
        return data

    def _clean_url(self, url: str) -> str:
        cleaned_url = url.strip().replace(';', '').replace('\n', '').replace('\r', '')
        self.LOG.debug("[抖音] 清理后的URL: %s", cleaned_url)
        return cleaned_url

    def _get_real_video_url(self, video_url: str) -> str:
        max_retries = 3
        retry_delay = 2

        for retry in range(max_retries):
            try:
                self.LOG.info("[抖音] 开始获取真实视频链接: %s (第%d次尝试)", video_url, retry + 1)
                proxy = {"http": self.http_proxy, "https": self.http_proxy} if self.http_proxy else None

                headers = {
                    'User-Agent': 'Mozilla/5.0 (Windows NT 10.0; Win64; x64)...'
                }

                response = requests.get(video_url, headers=headers, proxies=proxy, allow_redirects=True, timeout=60)
                if response.status_code in [200, 206]:
                    real_url = response.url
                    self.LOG.info("[抖音] 成功获取真实链接: %s", real_url)
                    return real_url
                else:
                    self.LOG.error("[抖音] 获取视频真实链接失败, 状态码: %d", response.status_code)
            except Exception as e:
                self.LOG.error("[抖音] 获取真实链接失败: %s", str(e))

        self.LOG.error("[抖音] 获取真实链接失败，已达到最大重试次数")
        return video_url

    def _parse_douyin(self, url: str) -> Dict[str, Any]:
        try:
            api_url = "https://apih.kfcgw50.me/api/douyin"
            clean_url = self._clean_url(url)
            params = {'url': clean_url, 'type': 'json'}

            self.LOG.debug("[抖音] 请求API: %s, 参数: %s", api_url, repr(params))
            proxy = {"http": self.http_proxy, "https": self.http_proxy} if self.http_proxy else None
            response = requests.get(api_url, params=params, timeout=30, proxies=proxy)

            if response.status_code != 200:
                raise DouyinParserError(f"API请求失败，状态码: {response.status_code}")

            data = response.json()
            self.LOG.debug("[抖音] API响应数据: %s", data)

            if data.get("code") == 200:
                result = data.get("data", {})
                if result.get('video'):
                    result['video'] = self._get_real_video_url(result['video'])
                return self._clean_response_data(result)
            else:
                raise DouyinParserError(data.get("message", "未知错误"))
        except Exception as e:
            self.LOG.error("[抖音] 解析过程发生未知错误: %s\n%s", str(e), traceback.format_exc())
            raise DouyinParserError(f"未知错误: {str(e)}")

    def handle_douyin_links(self, message: WxMsg):
        if not self.enable:
            return

            # 如果触发了指令，但是没有权限，则返回权限不足
        if self.gbm.get_group_permission(message.roomid, Feature.DOUYIN_PARSER) == PermissionStatus.DISABLED:
            return

        try:
            match = self.url_pattern.search(message.content)
            if not match:
                return

            original_url = self._clean_url(match.group(0))
            self.LOG.info("发现抖音链接: %s", original_url)
            self.LOG.info("检测到抖音分享链接，正在解析无水印视频...")
            self.wcf.send_text(f"检测到抖音分享链接，正在解析无水印视频...",
                               (message.roomid if message.from_group() else message.sender), message.sender)
            video_info = self._parse_douyin(original_url)
            if not video_info:
                raise DouyinParserError("无法获取视频信息")

            video_url = video_info.get('video', '')
            title = video_info.get('title', '无标题')
            author = video_info.get('name', '未知作者')
            if not video_url:
                raise DouyinParserError("无法获取视频地址")
            file_abspath = self.download_video(video_url, "douyin_parser/down_load_dir")
            self.wcf.send_file(file_abspath, (message.roomid if message.from_group() else message.sender))
            self.LOG.info("已发送解析结果: 标题[%s] 作者[%s]", title, author)
        except DouyinParserError as e:
            self.LOG.error("抖音解析失败: %s", str(e))
        except Exception as e:
            self.LOG.error("抖音解析发生未知错误: %s", str(e))

    def download_video(self, video_url, save_dir):
        # 确保 save_dir 是一个目录
        if os.path.isfile(save_dir):
            print(f"错误: {save_dir} 是一个文件，不能作为目录使用。")
            return None

        os.makedirs(save_dir, exist_ok=True)
        save_path = os.path.join(save_dir, "video.mp4")
        if video_url:
            video_response = requests.get(video_url, stream=True)
            if video_response.status_code == 200:
                with open(save_path, "wb") as file:
                    for chunk in video_response.iter_content(chunk_size=1024):
                        file.write(chunk)
                abs_path = os.path.abspath(save_path)
                print(f"视频已下载至: {abs_path}")
                return abs_path
            else:
                print("无法下载视频，HTTP 状态码:", video_response.status_code)
        else:
            print("API 响应中没有找到视频 URL")
        return None