server/lib/activitypub/context.ts

   1 import { ContextType } from '@shared/models'
   2
   3 function activityPubContextify <T> (data: T, type: ContextType) {
   4   return { ...getContextData(type), ...data }
   5 }
   6
   7 // ---------------------------------------------------------------------------
   8
   9 export {
  10   getContextData,
  11   activityPubContextify
  12 }
  13
  14 // ---------------------------------------------------------------------------
  15
  16 type ContextValue = { [ id: string ]: (string | { '@type': string, '@id': string }) }
  17
  18 const contextStore: { [ id in ContextType ]: (string | { [ id: string ]: string })[] } = {
  19   Video: buildContext({
  20     Hashtag: 'as:Hashtag',
  21     uuid: 'sc:identifier',
  22     category: 'sc:category',
  23     licence: 'sc:license',
  24     subtitleLanguage: 'sc:subtitleLanguage',
  25     sensitive: 'as:sensitive',
  26     language: 'sc:inLanguage',
  27     identifier: 'sc:identifier',
  28
  29     // TODO: remove in a few versions, introduced in 4.2
  30     icons: 'as:icon',
  31
  32     isLiveBroadcast: 'sc:isLiveBroadcast',
  33     liveSaveReplay: {
  34       '@type': 'sc:Boolean',
  35       '@id': 'pt:liveSaveReplay'
  36     },
  37     permanentLive: {
  38       '@type': 'sc:Boolean',
  39       '@id': 'pt:permanentLive'
  40     },
  41     latencyMode: {
  42       '@type': 'sc:Number',
  43       '@id': 'pt:latencyMode'
  44     },
  45
  46     Infohash: 'pt:Infohash',
  47
  48     originallyPublishedAt: 'sc:datePublished',
  49     views: {
  50       '@type': 'sc:Number',
  51       '@id': 'pt:views'
  52     },
  53     state: {
  54       '@type': 'sc:Number',
  55       '@id': 'pt:state'
  56     },
  57     size: {
  58       '@type': 'sc:Number',
  59       '@id': 'pt:size'
  60     },
  61     fps: {
  62       '@type': 'sc:Number',
  63       '@id': 'pt:fps'
  64     },
  65     commentsEnabled: {
  66       '@type': 'sc:Boolean',
  67       '@id': 'pt:commentsEnabled'
  68     },
  69     downloadEnabled: {
  70       '@type': 'sc:Boolean',
  71       '@id': 'pt:downloadEnabled'
  72     },
  73     waitTranscoding: {
  74       '@type': 'sc:Boolean',
  75       '@id': 'pt:waitTranscoding'
  76     },
  77     support: {
  78       '@type': 'sc:Text',
  79       '@id': 'pt:support'
  80     },
  81     likes: {
  82       '@id': 'as:likes',
  83       '@type': '@id'
  84     },
  85     dislikes: {
  86       '@id': 'as:dislikes',
  87       '@type': '@id'
  88     },
  89     shares: {
  90       '@id': 'as:shares',
  91       '@type': '@id'
  92     },
  93     comments: {
  94       '@id': 'as:comments',
  95       '@type': '@id'
  96     }
  97   }),
  98
  99   Playlist: buildContext({
 100     Playlist: 'pt:Playlist',
 101     PlaylistElement: 'pt:PlaylistElement',
 102     position: {
 103       '@type': 'sc:Number',
 104       '@id': 'pt:position'
 105     },
 106     startTimestamp: {
 107       '@type': 'sc:Number',
 108       '@id': 'pt:startTimestamp'
 109     },
 110     stopTimestamp: {
 111       '@type': 'sc:Number',
 112       '@id': 'pt:stopTimestamp'
 113     },
 114     uuid: 'sc:identifier'
 115   }),
 116
 117   CacheFile: buildContext({
 118     expires: 'sc:expires',
 119     CacheFile: 'pt:CacheFile'
 120   }),
 121
 122   Flag: buildContext({
 123     Hashtag: 'as:Hashtag'
 124   }),
 125
 126   Actor: buildContext({
 127     playlists: {
 128       '@id': 'pt:playlists',
 129       '@type': '@id'
 130     }
 131   }),
 132
 133   WatchAction: buildContext({
 134     WatchAction: 'sc:WatchAction',
 135     startTimestamp: {
 136       '@type': 'sc:Number',
 137       '@id': 'pt:startTimestamp'
 138     },
 139     stopTimestamp: {
 140       '@type': 'sc:Number',
 141       '@id': 'pt:stopTimestamp'
 142     },
 143     watchSection: {
 144       '@type': 'sc:Number',
 145       '@id': 'pt:stopTimestamp'
 146     },
 147     uuid: 'sc:identifier'
 148   }),
 149
 150   Collection: buildContext(),
 151   Follow: buildContext(),
 152   Reject: buildContext(),
 153   Accept: buildContext(),
 154   View: buildContext(),
 155   Announce: buildContext(),
 156   Comment: buildContext(),
 157   Delete: buildContext(),
 158   Rate: buildContext()
 159 }
 160
 161 function getContextData (type: ContextType) {
 162   return {
 163     '@context': contextStore[type]
 164   }
 165 }
 166
 167 function buildContext (contextValue?: ContextValue) {
 168   const baseContext = [
 169     'https://www.w3.org/ns/activitystreams',
 170     'https://w3id.org/security/v1',
 171     {
 172       RsaSignature2017: 'https://w3id.org/security#RsaSignature2017'
 173     }
 174   ]
 175
 176   if (!contextValue) return baseContext
 177
 178   return [
 179     ...baseContext,
 180
 181     {
 182       pt: 'https://joinpeertube.org/ns#',
 183       sc: 'http://schema.org/',
 184
 185       ...contextValue
 186     }
 187   ]
 188 }