Method uploadMedia

src/core.js:498–631

(file, filename, toUserName)

  // file: Stream, Buffer, File, Blob
  uploadMedia (file, filename, toUserName) {
    return Promise.resolve().then(() => {
      let name, type, size, ext, mediatype, data
      return new Promise((resolve, reject) => {
        if ((typeof (File) !== 'undefined' && file.constructor == File) ||
          (typeof (Blob) !== 'undefined' && file.constructor == Blob)) {
          name = file.name || 'file'
          type = file.type
          size = file.size
          data = file
          return resolve()
        } else if (Buffer.isBuffer(file)) {
          if (!filename) {
            return reject(new Error('文件名未知'))
          }
          name = filename
          type = mime.lookup(name)
          size = file.length
          data = file
          return resolve()
        } else if (file.readable) {
          if (!file.path && !filename) {
            return reject(new Error('文件名未知'))
          }
          name = path.basename(file.path || filename)
          type = mime.lookup(name)
          file.pipe(bl((err, buffer) => {
            if (err) {
              return reject(err)
            }
            size = buffer.length
            data = buffer
            return resolve()
          }))
        }
      }).then(() => {
        ext = name.match(/.*\.(.*)/)
        if (ext) {
          ext = ext[1].toLowerCase()
        } else {
          ext = ''
        }

        switch (ext) {
          case 'bmp':
          case 'jpeg':
          case 'jpg':
          case 'png':
            mediatype = 'pic'
            break
          case 'mp4':
            mediatype = 'video'
            break
          default:
            mediatype = 'doc'
        }

        let clientMsgId = getClientMsgId()