const qiniu = require('qiniu')
const path = require('path')
const sys = require('../config/sys')
const sceneDir = path.join(__dirname, '../', sys.static_dir, sys.scene_dir)
const key = 'dlPPwgZky_F-iP8CbSbJpiAtAcqw3BYwb9rdHMrS'
const secre = 'YEtkLKDsImXB-8m1CT1zV_YwCwwGvrUvo2ktj9KZ'
const host = 'super.4dage.com/'

let getToken = (() => {
  const bucket = 'super'
  const expires = 7200

  let mac = new qiniu.auth.digest.Mac(key, secre);
  let defaultToken

  (function referToken() {
    let putPolicy = new qiniu.rs.PutPolicy({ expires, scope: bucket })
    defaultToken = putPolicy.uploadToken(mac);
    setTimeout(referToken, (expires - 200) * 1000)
  })();

  function getToken (name) {
    if (!name) return defaultToken;

    let scope = name ? bucket + ':' + name : bucket;
    console.log('----', scope)
    let putPolicy = new qiniu.rs.PutPolicy({ expires, scope })
    return putPolicy.uploadToken(mac);
  }
  return getToken
})();


let zoons = {
  '华东': 'Zone_z0',
  '华北': 'Zone_z1',
  '华南': 'Zone_z2',
  '北美': 'Zone_na0'
}
function uploadFile(localFile, target, zone = '华南') {
  target = path.join(target).replace(/\\/ig, "\/")

  let config = new qiniu.conf.Config();
  let token = getToken(target)
  let formUploader = new qiniu.form_up.FormUploader()
  let putExtra = new qiniu.form_up.PutExtra();

  config.zone = qiniu.zone[zoons[zone]];
  config.useHttpsDomain = true;
  config.useCdnDomain = true;
  
  return new Promise((resolve, reject) => {
    formUploader.putFile(token, target, localFile, putExtra, err => {
      if (err) {
        reject(err)
      } else {
        resolve(host + target)
      }
    })
  })
}

const fs = require('fs')
const logfile = path.join(__dirname, '../upload.log')

module.exports = async (name, file) => {
  let upload = 0

  async function repeatUpload () {
    try {
      return await uploadFile(
        path.join(sceneDir, name, file),
        'data/' + path.join(name, file)
      )
    } catch (e) {
      if (++upload < 5) {
        return repeatUpload()
      } else {
        fs.writeFileSync(logfile, fs.readFileSync(logfile) + '\r\n' + path.join(sceneDir, name, file) + '文件上传失败，失败原因:' + e.toString())
        return e
      }
    }
  }

  return await repeatUpload()
}