server/helpers/activitypub.ts

   1 import { Activity } from '../../shared/models/activitypub/activity'
   2 import { ResultList } from '../../shared/models/result-list.model'
   3 import { AccountInstance } from '../models/account/account-interface'
   4 import { signObject } from './peertube-crypto'
   5
   6 function activityPubContextify <T> (data: T) {
   7   return Object.assign(data,{
   8     '@context': [
   9       'https://www.w3.org/ns/activitystreams',
  10       'https://w3id.org/security/v1',
  11       {
  12         'Hashtag': 'as:Hashtag',
  13         'uuid': 'http://schema.org/identifier',
  14         'category': 'http://schema.org/category',
  15         'licence': 'http://schema.org/license',
  16         'nsfw': 'as:sensitive',
  17         'language': 'http://schema.org/inLanguage',
  18         'views': 'http://schema.org/Number',
  19         'size': 'http://schema.org/Number',
  20         'VideoChannel': 'https://peertu.be/ns/VideoChannel'
  21       }
  22     ]
  23   })
  24 }
  25
  26 function activityPubCollectionPagination (url: string, page: number, result: ResultList<any>) {
  27   const baseUrl = url.split('?').shift
  28
  29   const obj = {
  30     id: baseUrl,
  31     type: 'Collection',
  32     totalItems: result.total,
  33     first: {
  34       id: baseUrl + '?page=' + page,
  35       type: 'CollectionPage',
  36       totalItems: result.total,
  37       next: baseUrl + '?page=' + (page + 1),
  38       partOf: baseUrl,
  39       items: result.data
  40     }
  41   }
  42
  43   return activityPubContextify(obj)
  44 }
  45
  46 function buildSignedActivity (byAccount: AccountInstance, data: Object) {
  47   const activity = activityPubContextify(data)
  48
  49   return signObject(byAccount, activity) as Promise<Activity>
  50 }
  51
  52 // ---------------------------------------------------------------------------
  53
  54 export {
  55   activityPubContextify,
  56   activityPubCollectionPagination,
  57   buildSignedActivity
  58 }