// 图片上传
var OSS = require(‘ali-oss‘)
var ossClient
var partSize = 1024 * 1024 * 10
var parallel = 5 // 同时上传的分片数
var backObj = {}
const imageUpload = function (file, callback) {
  $api.user.getStsToken({}).then(({ data }) => {
    if (data && data.head.retCode === ‘0000‘) {
      var credentials = data.body
      const { accessKeyId, accessKeySecret, securityToken, bucketName } = credentials
      ossClient = new OSS({
        accessKeyId: accessKeyId,
        accessKeySecret: accessKeySecret,
        stsToken: securityToken,
        bucket: bucketName, // utility
        secure: true,
        region: ‘oss-cn-beijing‘, // todo
        folder: ‘customer‘
      })
      if (ossClient) {
        var { raw } = file
        var fileList = [raw]
        fileList.forEach(file => {
          if (file.size < partSize) {
            commonUpload(file, callback)
          } else {
            multipartUpload(file, callback)
          }
        })
      } else {
        this.statusMsg = ‘initOSSClient异常空，请刷新重试或联系管理员‘
      }
    } else {
      this.statusMsg = ‘sts临时凭证获取失败，请刷新重试或联系管理员‘
    }
  })
}
function commonUpload (file, callback) {
  var newFileName = new Date().getTime() + Math.random().toString(36).substr(2) + file.name.substr(file.name.indexOf(‘.‘))
  ossClient.put(‘customer‘ + ‘/‘ + newFileName, file).then(result => {
    backObj = result
    backObj.size = file.size
    backObj.oldName = file.name
    callback(backObj)
  }).catch(err => {
    console.log(`Common upload ${file.name} failed === `, err)
  })
}
// 分片上传
function multipartUpload (file, callback) {
  var newFileName = new Date().getTime() + Math.random().toString(36).substr(2) + file.name.substr(file.name.indexOf(‘.‘))
  return ossClient.multipartUpload(‘customer‘ + ‘/‘ + newFileName, file, {
    parallel,
    partSize,
    progress: this.onMultipartUploadProgress
  }).then(result => {
    backObj = result
    backObj.size = file.size
    backObj.oldName = file.name
    callback(backObj)
  }).catch(err => {
    console.log(`Multipart upload ${file.name} failed === `, err)
  })
}