# -*- coding: utf-8 -*-
import re
import json
import html
import requests
from bs4 import BeautifulSoup
from typing import Optional, Tuple, Dict, Any

from core.logger import logger
from core.command_manager import matcher
from models import MessageEvent, MessageSegment

__plugin_meta__ = {
    "name": "bili_parser",
    "description": "自动解析B站分享卡片，提取视频封面和播放量等信息。",
    "usage": "（自动触发）当检测到B站小程序分享卡片时，自动发送视频信息。",
}

HEADERS = {
    'User-Agent': 'Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/91.0.4472.124 Safari/537.36'
}


def format_count(num: int) -> str:
    if not isinstance(num, int):
        return str(num)
    if num < 10000:
        return str(num)
    return f"{num / 10000:.1f}万"


def get_real_url(short_url: str) -> Optional[str]:
    try:
        response = requests.head(short_url, headers=HEADERS, allow_redirects=False, timeout=5)
        if response.status_code == 302:
            return response.headers.get('Location')
    except requests.RequestException as e:
        print(f"获取真实URL失败: {e}")
    return None

def parse_video_info(video_url: str) -> Optional[Dict[str, Any]]:
    try:
        response = requests.get(video_url, headers=HEADERS, timeout=5)
        response.raise_for_status()
        soup = BeautifulSoup(response.text, 'html.parser')

        script_tag = soup.find('script', text=re.compile('window.__INITIAL_STATE__'))
        if not script_tag:
            return None
            
        json_str = re.search(r'window\.__INITIAL_STATE__\s*=\s*(\{.*?\});', script_tag.string).group(1)
        data = json.loads(json_str)
        
        video_data = data.get('videoData', {})
        stat = video_data.get('stat', {})

        cover_url = video_data.get('pic', '')
        if cover_url:
            cover_url = cover_url.split('@')[0]
            if cover_url.startswith('//'):
                cover_url = 'https:' + cover_url

        return {
            "title": video_data.get('title', '未知标题'),
            "bvid": video_data.get('bvid', '未知BV号'),
            "cover_url": cover_url,
            "play": stat.get('view', 0),
            "like": stat.get('like', 0),
            "coin": stat.get('coin', 0),
            "favorite": stat.get('favorite', 0),
            "share": stat.get('share', 0),
        }

    except (requests.RequestException, KeyError, AttributeError, json.JSONDecodeError) as e:
        print(f"解析视频信息失败: {e}")
    
    return None

@matcher.on_message()
async def handle_bili_share(event: MessageEvent):
    if not event.raw_message.startswith('[CQ:json,data='):
        return

    logger.info(f"[bili_parser] 检测到JSON CQ码: {event.raw_message}")

    try:
        json_str_raw = event.raw_message.strip('[CQ:json,data=]').rstrip(']')
        
        json_str_decoded = html.unescape(json_str_raw)
        
        data = json.loads(json_str_decoded)
        
        short_url = data.get("meta", {}).get("detail_1", {}).get("qqdocurl")
        
        if not short_url or "b23.tv" not in short_url:
            logger.warning("[bili_parser] JSON中未找到有效的b23.tv链接。")
            return
            
        short_url = short_url.split('?')[0]
        logger.success(f"[bili_parser] 成功提取到B站短链接: {short_url}")

    except (json.JSONDecodeError, KeyError) as e:
        logger.error(f"[bili_parser] 解析JSON失败: {e}")
        return
    
    real_url = get_real_url(short_url)
    if not real_url:
        logger.error(f"[bili_parser] 无法从 {short_url} 获取真实URL。")
        await event.reply("无法解析B站短链接。")
        return

    video_info = parse_video_info(real_url)
    if not video_info:
        logger.error(f"[bili_parser] 无法从 {real_url} 解析视频信息。")
        await event.reply("无法获取视频信息，可能是B站接口变动或视频不存在。")
        return

    text_message = (
        f"BiliBili 视频解析\n"
        f"--------------------\n"
        f" 标题: {video_info['title']}\n"
        f" BV号: {video_info['bvid']}\n"
        f"--------------------\n"
        f" 数据:\n"
        f"   播放: {format_count(video_info['play'])}\n"
        f"   点赞: {format_count(video_info['like'])}\n"
        f"   投币: {format_count(video_info['coin'])}\n"
        f"   收藏: {format_count(video_info['favorite'])}\n"
        f"   转发: {format_count(video_info['share'])}\n"
        f"   B站链接: {short_url}"
    )
    
    image_message_segment = [MessageSegment.text("B站封面："),MessageSegment.image(video_info['cover_url'])]

    nodes = [
        event.bot.build_forward_node(user_id=event.self_id, nickname="B站视频解析", message=text_message),
        event.bot.build_forward_node(user_id=event.self_id, nickname="B站视频解析", message=image_message_segment)
    ]
    
    logger.success(f"[bili_parser] 成功解析视频信息并准备以聊天记录形式回复: {video_info['title']}")
    await event.bot.send_group_forward_msg(group_id=event.group_id, messages=nodes)