/**
 * 阿里云oss上传工具
 */
import { get_oss_sign_aliyun } from '@/api/user'
const OSS = require('ali-oss')
const config = {
  region: 'oss-cn-shenzhen',
  accessKeyId: 'LTAIyZIrTMnMYzZ8',
  accessKeySecret: 'bte644kZ70psfTenXE0IbSSQk040u1',
  // accessKeySecret: '1',
  policy: '',
  bucket: 'aiguovip2020'
}

/**
 * 配置
 */
const init = async(v) => {
  const res = await get_oss_sign_aliyun({ type: v })
  config.region = res.datas.region
  config.accessKeyId = res.datas.accessid
  config.signature = res.datas.signature
  config.policy = res.datas.policy
  config.bucket = res.datas.bucket
  console.log(config)
  return new OSS(config)
}

/**
 * 生成uuid
 */
const guid = () => {
  const S4 = () => {
    return (((1 + Math.random()) * 0x10000) | 0).toString(16).substring(1)
  }
  return (S4() + S4() + '-' + S4() + '-' + S4() + '-' + S4() + '-' + S4() + S4() + S4())
}

/**
 * 修改文件名字
 */
const fileName = (file) => {
  const arr = file.name.split('.')
  var uuid = 'oss' + guid()
  if (arr.length > 1) {
    return uuid + '.' + arr[arr.length - 1]
  } else {
    return uuid
  }
}

/**
 * 上传文件
 */
const ossPut = (file, dir) => {
  return new Promise((resolve, reject) => {
    const objectName = fileName(file)
    init().put(dir + objectName, file).then(({ res, url }) => {
      if (res && res.status == 200) {
        resolve(res, url)
      }
    }).catch((err) => {
      reject(err)
    })
  })
}
// 直接调取oss函数，返回URL结果
function uploadOSS(file) {
  return new Promise(async(resolve, reject) => {
    const fileName = fileName(file)
    //   let client = new OSS({
    //     region: OSSConfig.ossParams.region,
    //     accessKeyId: OSSConfig.ossParams.accessKeyId,
    //     accessKeySecret: OSSConfig.ossParams.accessKeySecret,
    //     bucket: OSSConfig.ossParams.bucket,
    //     secure: true
    //   })
    const res = await init().multipartUpload(dir + fileName, file)
    if (res.name) {
      resolve({
        fileName: file.name,
        url: `${OSSConfig.uploadHost}/${fileName}`
      })
    } else {
      reject('OSS上传失败')
    }
  })
}
/**
 * 下载文件
 */
const ossGet = (name) => {
  return new Promise((resolve, reject) => {
    init().get(name).then(({ res }) => {
      if (res && res.status == 200) {
        resolve(res)
      }
    }).catch((err) => {
      reject(err)
    })
  })
}

export default { ossPut, ossGet, uploadOSS, init }