server/lib/activitypub/video-comments.ts

   1 import { sanitizeAndCheckVideoCommentObject } from '../../helpers/custom-validators/activitypub/video-comments'
   2 import { logger } from '../../helpers/logger'
   3 import { doRequest } from '../../helpers/requests'
   4 import { ACTIVITY_PUB, CRAWL_REQUEST_CONCURRENCY } from '../../initializers/constants'
   5 import { VideoModel } from '../../models/video/video'
   6 import { VideoCommentModel } from '../../models/video/video-comment'
   7 import { getOrCreateActorAndServerAndModel } from './actor'
   8 import { getOrCreateVideoAndAccountAndChannel } from './videos'
   9 import * as Bluebird from 'bluebird'
  10 import { checkUrlsSameHost } from '../../helpers/activitypub'
  11
  12 type ResolveThreadParams = {
  13   url: string,
  14   comments?: VideoCommentModel[],
  15   isVideo?: boolean,
  16   commentCreated?: boolean
  17 }
  18 type ResolveThreadResult = Promise<{ video: VideoModel, comment: VideoCommentModel, commentCreated: boolean }>
  19
  20 async function addVideoComments (commentUrls: string[]) {
  21   return Bluebird.map(commentUrls, commentUrl => {
  22     return resolveThread({ url: commentUrl, isVideo: false })
  23   }, { concurrency: CRAWL_REQUEST_CONCURRENCY })
  24 }
  25
  26 async function resolveThread (params: ResolveThreadParams): ResolveThreadResult {
  27   const { url, isVideo } = params
  28   if (params.commentCreated === undefined) params.commentCreated = false
  29   if (params.comments === undefined) params.comments = []
  30
  31    // Already have this comment?
  32   if (isVideo !== true) {
  33     const result = await resolveCommentFromDB(params)
  34     if (result) return result
  35   }
  36
  37   try {
  38     if (isVideo !== false) return await tryResolveThreadFromVideo(params)
  39
  40     return resolveParentComment(params)
  41   } catch (err) {
  42     logger.debug('Cannot get or create account and video and channel for reply %s, fetch comment', url, { err })
  43
  44     return resolveParentComment(params)
  45   }
  46 }
  47
  48 export {
  49   addVideoComments,
  50   resolveThread
  51 }
  52
  53 // ---------------------------------------------------------------------------
  54
  55 async function resolveCommentFromDB (params: ResolveThreadParams) {
  56   const { url, comments, commentCreated } = params
  57
  58   const commentFromDatabase = await VideoCommentModel.loadByUrlAndPopulateReplyAndVideoUrlAndAccount(url)
  59   if (commentFromDatabase) {
  60     let parentComments = comments.concat([ commentFromDatabase ])
  61
  62     // Speed up things and resolve directly the thread
  63     if (commentFromDatabase.InReplyToVideoComment) {
  64       const data = await VideoCommentModel.listThreadParentComments(commentFromDatabase, undefined, 'DESC')
  65
  66       parentComments = parentComments.concat(data)
  67     }
  68
  69     return resolveThread({
  70       url: commentFromDatabase.Video.url,
  71       comments: parentComments,
  72       isVideo: true,
  73       commentCreated
  74     })
  75   }
  76
  77   return undefined
  78 }
  79
  80 async function tryResolveThreadFromVideo (params: ResolveThreadParams) {
  81   const { url, comments, commentCreated } = params
  82
  83   // Maybe it's a reply to a video?
  84   // If yes, it's done: we resolved all the thread
  85   const syncParam = { likes: true, dislikes: true, shares: true, comments: false, thumbnail: true, refreshVideo: false }
  86   const { video } = await getOrCreateVideoAndAccountAndChannel({ videoObject: url, syncParam })
  87
  88   let resultComment: VideoCommentModel
  89   if (comments.length !== 0) {
  90     const firstReply = comments[ comments.length - 1 ]
  91     firstReply.inReplyToCommentId = null
  92     firstReply.originCommentId = null
  93     firstReply.videoId = video.id
  94     firstReply.changed('updatedAt', true)
  95     firstReply.Video = video
  96
  97     comments[comments.length - 1] = await firstReply.save()
  98
  99     for (let i = comments.length - 2; i >= 0; i--) {
 100       const comment = comments[ i ]
 101       comment.originCommentId = firstReply.id
 102       comment.inReplyToCommentId = comments[ i + 1 ].id
 103       comment.videoId = video.id
 104       comment.changed('updatedAt', true)
 105       comment.Video = video
 106
 107       comments[i] = await comment.save()
 108     }
 109
 110     resultComment = comments[0]
 111   }
 112
 113   return { video, comment: resultComment, commentCreated }
 114 }
 115
 116 async function resolveParentComment (params: ResolveThreadParams) {
 117   const { url, comments } = params
 118
 119   if (comments.length > ACTIVITY_PUB.MAX_RECURSION_COMMENTS) {
 120     throw new Error('Recursion limit reached when resolving a thread')
 121   }
 122
 123   const { body } = await doRequest({
 124     uri: url,
 125     json: true,
 126     activityPub: true
 127   })
 128
 129   if (sanitizeAndCheckVideoCommentObject(body) === false) {
 130     throw new Error('Remote video comment JSON is not valid:' + JSON.stringify(body))
 131   }
 132
 133   const actorUrl = body.attributedTo
 134   if (!actorUrl) throw new Error('Miss attributed to in comment')
 135
 136   if (checkUrlsSameHost(url, actorUrl) !== true) {
 137     throw new Error(`Actor url ${actorUrl} has not the same host than the comment url ${url}`)
 138   }
 139
 140   if (checkUrlsSameHost(body.id, url) !== true) {
 141     throw new Error(`Comment url ${url} host is different from the AP object id ${body.id}`)
 142   }
 143
 144   const actor = await getOrCreateActorAndServerAndModel(actorUrl)
 145   const comment = new VideoCommentModel({
 146     url: body.id,
 147     text: body.content,
 148     videoId: null,
 149     accountId: actor.Account.id,
 150     inReplyToCommentId: null,
 151     originCommentId: null,
 152     createdAt: new Date(body.published),
 153     updatedAt: new Date(body.updated)
 154   })
 155   comment.Account = actor.Account
 156
 157   return resolveThread({
 158     url: body.inReplyTo,
 159     comments: comments.concat([ comment ]),
 160     commentCreated: true
 161   })
 162 }