server/helpers/requests.ts

   1 import * as Bluebird from 'bluebird'
   2 import { createWriteStream } from 'fs-extra'
   3 import * as request from 'request'
   4 import { ACTIVITY_PUB } from '../initializers'
   5 import { processImage } from './image-utils'
   6
   7 function doRequest <T> (
   8   requestOptions: request.CoreOptions & request.UriOptions & { activityPub?: boolean }
   9 ): Bluebird<{ response: request.RequestResponse, body: any }> {
  10   if (requestOptions.activityPub === true) {
  11     if (!Array.isArray(requestOptions.headers)) requestOptions.headers = {}
  12     requestOptions.headers['accept'] = ACTIVITY_PUB.ACCEPT_HEADER
  13   }
  14
  15   return new Bluebird<{ response: request.RequestResponse, body: T }>((res, rej) => {
  16     request(requestOptions, (err, response, body) => err ? rej(err) : res({ response, body }))
  17   })
  18 }
  19
  20 function doRequestAndSaveToFile (requestOptions: request.CoreOptions & request.UriOptions, destPath: string) {
  21   return new Bluebird<void>((res, rej) => {
  22     const file = createWriteStream(destPath)
  23     file.on('finish', () => res())
  24
  25     request(requestOptions)
  26       .on('error', err => rej(err))
  27       .pipe(file)
  28   })
  29 }
  30
  31 async function downloadImage (url: string, destPath: string, size: { width: number, height: number }) {
  32   const tmpPath = destPath + '.tmp'
  33
  34   await doRequestAndSaveToFile({ method: 'GET', uri: url }, tmpPath)
  35
  36   await processImage({ path: tmpPath }, destPath, size)
  37 }
  38
  39 // ---------------------------------------------------------------------------
  40
  41 export {
  42   doRequest,
  43   doRequestAndSaveToFile,
  44   downloadImage
  45 }