discounts-minapp/common/oss/index.js

import OSSConfig from "./OSSConfig"

/**
 * 生成一个随机的Key
 */
function storeKey() {
  let s = [];
  let hexDigits = "0123456789abcdef";
  for (let i = 0; i < 36; i++) {
    s[i] = hexDigits.substr(Math.floor(Math.random() * 0x10), 1);
  }
  s[14] = "4";
  s[19] = hexDigits.substr((s[19] & 0x3) | 0x8, 1);
  s[8] = s[13] = s[18] = s[23] = "-";
  return s.join("");
}

/**
 * 根据当天日期在OSS端生成文件夹
 */
function storeFolder() {
  const date = new Date();
  const formatNumber = n => {
    n = n.toString()
    return n[1] ? n : '0' + n
  }
  return [date.getFullYear(), date.getMonth() + 1, date.getDate()].map(formatNumber).join('-')
}

/**
 * 阿里云OSS上传文件, 所有具体功能的工具函数均基于此
 * 注意, resolve时一定为上传成功, 返回OSS上的Key
 * @param filePath 待上传文件的URI
 * @param key 存储桶中的目标文件名
 * @param folder 存储桶中的目标文件夹
 */
export function ossUpload(filePath, key = storeKey(), folder = storeFolder()) {
  return new Promise((resolve, reject) => {
    if (folder && folder?.length > 0) {
      if (folder[0] == "/") folder = folder.slice(1, folder.length)
      if (folder[folder.length - 1] != "/") folder += "/"
      key = folder + key
    }
    const filePrefixArr = filePath.split(".")
    key += `.${filePrefixArr[filePrefixArr.length - 1]}`
    let config = {
      url: OSSConfig.host,
      name: 'file',
      filePath,
      formData: {
        key,
        policy: OSSConfig.policyBase64,
        OSSAccessKeyId: OSSConfig.accessid,
        success_action_status: '200',
        signature: OSSConfig.signature,
      },
      success(res) {
        if (res.errMsg.includes("uploadFile:ok")) {
          resolve(key)
        } else {
          reject(res)
        }
      },
      fail(err) {
        reject(err)
      }
    }
    uni.uploadFile(config)
  })
}

/**
 * 阿里云OSS上传图片
 * @param {compressed, key, folder, success, fail} compressed: 是否压缩 key: 存储桶中的目标文件名 folder: 存储桶中的目标文件夹
 */
export function ossUploadImage({
  key,
  folder,
  compressed = true, //是否压缩
  success, //成功时的回调
  fail //失败时的回调
}) {
  const sizeType = [compressed ? 'compressed' : 'original']
  uni.chooseImage({
    count: 1,
    sizeType,
    success(res) {
      console.log(res)
      ossUpload(res.tempFilePaths[0], key, folder).then(success).catch(fail)
    },
    fail
  })
}

/**
 * 阿里云OSS上传视频
 * @param { key, folder, sourceType, compressed, maxDuration, camera, success, fail} 
 * key: 存储桶中的目标文件名 folder: 存储桶中的目标文件夹 其它参数同uni.chooseVideo(mpWeixin) 
 */
export function ossUploadVideo({
  key,
  folder,
  sourceType = ['album', 'camera'], //album 从相册选视频, camera 使用相机拍摄
  compressed = true, //是否压缩所选的视频源文件
  maxDuration = 60, //拍摄视频最长拍摄时间, 单位秒。最长支持 60 秒
  camera = 'back', //调用相机方向, 'front'、'back', 默认'back'
  success, //成功时的回调
  fail //失败时的回调
}) {
  uni.chooseVideo({
    sourceType,
    compressed,
    maxDuration,
    camera,
    success(res) {
      ossUpload(res.tempFilePath, key, folder).then(success).catch(fail)
    },
    fail
  })
}
const OSS = {
  ossUploadVideo,
  ossUploadImage,
  ossUpload
}
export default OSS;