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 import { extname } from 'path'
   7
   8 function doRequest <T> (
   9   requestOptions: request.CoreOptions & request.UriOptions & { activityPub?: boolean }
  10 ): Bluebird<{ response: request.RequestResponse, body: any }> {
  11   if (requestOptions.activityPub === true) {
  12     if (!Array.isArray(requestOptions.headers)) requestOptions.headers = {}
  13     requestOptions.headers['accept'] = ACTIVITY_PUB.ACCEPT_HEADER
  14   }
  15
  16   return new Bluebird<{ response: request.RequestResponse, body: T }>((res, rej) => {
  17     request(requestOptions, (err, response, body) => err ? rej(err) : res({ response, body }))
  18   })
  19 }
  20
  21 function doRequestAndSaveToFile (requestOptions: request.CoreOptions & request.UriOptions, destPath: string) {
  22   return new Bluebird<void>((res, rej) => {
  23     const file = createWriteStream(destPath)
  24     file.on('finish', () => res())
  25
  26     request(requestOptions)
  27       .on('error', err => rej(err))
  28       .pipe(file)
  29   })
  30 }
  31
  32 async function downloadImage (url: string, destPath: string, size: { width: number, height: number }) {
  33   const tmpPath = destPath + '.tmp' + extname(destPath)
  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 }