注销申请图片上传(平台收付通)

电商平台服务商调用注销申请接口时，需要先调用本接口上传相关的资料图片，获取图片ID后，再填写到注销申请请求中。 官方文档

const { Multipart } = require('wechatpay-axios-plugin')
const { createReadStream } = require('fs')
const { basename } = require('path');

let localFilePath = '/path/to/merchant-certificate-file.jpg'
const stream = createReadStream(localFilePath)
const media = new Multipart()
  .append('meta', JSON.stringify({
    file_name: basename(localFilePath),
    file_digest: 'from upstream or local calculated',
  }))
  .append('file', stream, basename(localFilePath))

wxpay.v3.ecommerce.account.cancelApplications.media.post(media)
.then(
  ({ 
    data: {
      media_id,
    },
  }) => ({
    media_id,
  })
)