text: const encrypt = require('./crypto')
  const request = require('request')
  const queryString = require('querystring')
  
  request.debug = true
  
  const chooseUserAgent = (ua) => {
      const userAgentList = [
          'Mozilla/5.0 (iPhone; CPU iPhone OS 9_1 like Mac OS X) AppleWebKit/601.1.46 (KHTML, like Gecko) Version/9.0 Mobile/13B143 Safari/601.1',
          'Mozilla/5.0 (iPhone; CPU iPhone OS 9_1 like Mac OS X) AppleWebKit/601.1.46 (KHTML, like Gecko) Version/9.0 Mobile/13B143 Safari/601.1',
          'Mozilla/5.0 (Linux; Android 5.0; SM-G900P Build/LRX21T) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/59.0.3071.115 Mobile Safari/537.36',
          'Mozilla/5.0 (Linux; Android 6.0; Nexus 5 Build/MRA58N) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/59.0.3071.115 Mobile Safari/537.36',
          'Mozilla/5.0 (Linux; Android 5.1.1; Nexus 6 Build/LYZ28E) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/59.0.3071.115 Mobile Safari/537.36',
          'Mozilla/5.0 (iPhone; CPU iPhone OS 10_3_2 like Mac OS X) AppleWebKit/603.2.4 (KHTML, like Gecko) Mobile/14F89;GameHelper',
          'Mozilla/5.0 (iPhone; CPU iPhone OS 10_0 like Mac OS X) AppleWebKit/602.1.38 (KHTML, like Gecko) Version/10.0 Mobile/14A300 Safari/602.1',
          'Mozilla/5.0 (iPad; CPU OS 10_0 like Mac OS X) AppleWebKit/602.1.38 (KHTML, like Gecko) Version/10.0 Mobile/14A300 Safari/602.1',
          'Mozilla/5.0 (Macintosh; Intel Mac OS X 10.12; rv:46.0) Gecko/20100101 Firefox/46.0',
          'Mozilla/5.0 (Macintosh; Intel Mac OS X 10_12_5) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/59.0.3071.115 Safari/537.36',
          'Mozilla/5.0 (Macintosh; Intel Mac OS X 10_12_5) AppleWebKit/603.2.4 (KHTML, like Gecko) Version/10.1.1 Safari/603.2.4',
          'Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:46.0) Gecko/20100101 Firefox/46.0',
          'Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/51.0.2704.103 Safari/537.36',
          'Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/42.0.2311.135 Safari/537.36 Edge/13.10586'
      ]
      let index = 0
      if(typeof(ua) == 'undefined')
          index = Math.floor(Math.random() * userAgentList.length)
      else if(ua == 'mobile')
          index = Math.floor(Math.random() * 7)
      else if(ua == 'pc')
          index = Math.floor(Math.random() * 5) + 8
      else
          return ua
      return userAgentList[index]
  }
  
  const createRequest = (method, url, data, options) => {
      return new Promise((resolve, reject) => {
  
          let headers = {'User-Agent': chooseUserAgent(options.ua)}
          if(method.toUpperCase() == 'POST') headers['Content-Type'] = 'application/x-www-form-urlencoded'
          if(url.includes('music.163.com')) headers['Referer'] = 'http://music.163.com'
          // headers['X-Real-IP'] = '118.88.88.88'
  
          if(typeof(options.cookie) === 'object')
              headers['Cookie'] = Object.keys(options.cookie).map(key => (encodeURIComponent(key) + '=' + encodeURIComponent(options.cookie[key]))).join('; ')
          else if(options.cookie)
              headers['Cookie'] = options.cookie
  
          if(options.crypto == 'weapi'){
              let csrfToken = (headers['Cookie'] || '').match(/_csrf=([^(;|$)]+)/)
              data.csrf_token = (csrfToken ? csrfToken[1] : '')
              data = encrypt.weapi(data)
              url = url.replace(/\w*api/,'weapi')
          }
          else if(options.crypto == 'linuxapi'){
              data = encrypt.linuxapi({'method': method, url: url.replace(/\w*api/,'api'), 'params': data})
              headers['User-Agent'] = 'Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/60.0.3112.90 Safari/537.36'
              url = 'http://music.163.com/api/linux/forward'
          }
  
          const answer = {status: 500, body: {}, cookie: []}
          request(
              {method: method, url: url, headers: headers, body: queryString.stringify(data), proxy: options.proxy}, 
              (err, res, body) => {
                  if(err){
                      answer.status = 502
                      answer.body = {code: 502, msg: err.stack}
                      reject(answer)
                  }
                  else{
                      answer.cookie = (res.headers['set-cookie'] || []).map(x => x.replace(/\s*Domain=[^(;|$)]+;*/, ''))
                      try{
                          answer.body = JSON.parse(body)
                          answer.status = answer.body.code || res.statusCode
                      }
                      catch(e){
                          answer.body = body
                          answer.status = res.statusCode
                      }
                      answer.status = (100 < answer.status && answer.status < 600) ? answer.status : 400
                      if(answer.status == 200)
                          resolve(answer)
                      else                  
                          reject(answer)
                  }
              }
          )
      })
  }
  
  module.exports = createRequest
  