import { getQuery, createError } from 'h3'
import axios from 'axios'

export default defineEventHandler(async (event) => {
  const query = getQuery(event)
  const hash = query.hash as string

  if (!hash) {
    throw createError({
      statusCode: 400,
      message: 'Hash is required'
    })
  }

  try {
    // 首先尝试通过移动端API获取播放链接
    const infoUrl = `http://m.kugou.com/app/i/getSongInfo.php?cmd=playInfo&hash=${hash}`
    const infoRes = await axios.get(infoUrl, { validateStatus: () => true })
    
    if (infoRes.data && infoRes.data.url) {
      return {
        data: {
          play_url: infoRes.data.url
        }
      }
    }

    // 如果失败或者需要付费（VIP），通过标题和歌手名从网易云匹配一个试听链接
    if (infoRes.data && infoRes.data.songName) {
      const keyword = `${infoRes.data.songName} ${infoRes.data.singerName || ''}`.trim()
      
      try {
        // 搜索网易云音乐
        const searchUrl = `https://music.163.com/api/search/get/web?s=${encodeURIComponent(keyword)}&type=1&offset=0&total=true&limit=1`
        const searchRes = await axios.get(searchUrl, {
          headers: {
            'User-Agent': 'Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36'
          }
        })
        
        if (searchRes.data?.result?.songs?.length > 0) {
          const songId = searchRes.data.result.songs[0].id
          // 获取网易云播放链接
          const neteaseUrl = `https://music.163.com/song/media/outer/url?id=${songId}.mp3`
          return {
            data: {
              play_url: neteaseUrl
            }
          }
        }
      } catch (e) {
        console.error('Fallback to Netease failed:', e)
      }
    }

    // 如果都没有，尝试使用原本的 API
    const url = `http://www.kugou.com/yy/index.php?r=play/getdata&hash=${hash}`
    const response = await axios.get(url, {
      headers: {
        'User-Agent': 'Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36',
        'Cookie': 'kg_mid=1234567890'
      },
      validateStatus: () => true
    })
    
    return response.data
  } catch (error) {
    throw createError({
      statusCode: 500,
      message: 'Music service unavailable'
    })
  }
})