server/lib/activitypub/video-comments.ts

   1 import * as Bluebird from 'bluebird'
   2 import { checkUrlsSameHost } from '../../helpers/activitypub'
   3 import { sanitizeAndCheckVideoCommentObject } from '../../helpers/custom-validators/activitypub/video-comments'
   4 import { logger } from '../../helpers/logger'
   5 import { doJSONRequest } from '../../helpers/requests'
   6 import { ACTIVITY_PUB, CRAWL_REQUEST_CONCURRENCY } from '../../initializers/constants'
   7 import { VideoCommentModel } from '../../models/video/video-comment'
   8 import { MCommentOwner, MCommentOwnerVideo, MVideoAccountLightBlacklistAllFiles } from '../../types/models/video'
   9 import { getOrCreateActorAndServerAndModel } from './actor'
  10 import { getOrCreateVideoAndAccountAndChannel } from './videos'
  11
  12 type ResolveThreadParams = {
  13   url: string
  14   comments?: MCommentOwner[]
  15   isVideo?: boolean
  16   commentCreated?: boolean
  17 }
  18 type ResolveThreadResult = Promise<{ video: MVideoAccountLightBlacklistAllFiles, comment: MCommentOwnerVideo, 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   // If it is not a video, or if we don't know if it's a video
  32   if (isVideo === false || isVideo === undefined) {
  33     const result = await resolveCommentFromDB(params)
  34     if (result) return result
  35   }
  36
  37   try {
  38     // If it is a video, or if we don't know if it's a video
  39     if (isVideo === true || isVideo === undefined) {
  40       // Keep await so we catch the exception
  41       return await tryResolveThreadFromVideo(params)
  42     }
  43   } catch (err) {
  44     logger.debug('Cannot resolve thread from video %s, maybe because it was not a video', url, { err })
  45   }
  46
  47   return resolveRemoteParentComment(params)
  48 }
  49
  50 export {
  51   addVideoComments,
  52   resolveThread
  53 }
  54
  55 // ---------------------------------------------------------------------------
  56
  57 async function resolveCommentFromDB (params: ResolveThreadParams) {
  58   const { url, comments, commentCreated } = params
  59
  60   const commentFromDatabase = await VideoCommentModel.loadByUrlAndPopulateReplyAndVideoUrlAndAccount(url)
  61   if (commentFromDatabase) {
  62     let parentComments = comments.concat([ commentFromDatabase ])
  63
  64     // Speed up things and resolve directly the thread
  65     if (commentFromDatabase.InReplyToVideoComment) {
  66       const data = await VideoCommentModel.listThreadParentComments(commentFromDatabase, undefined, 'DESC')
  67
  68       parentComments = parentComments.concat(data)
  69     }
  70
  71     return resolveThread({
  72       url: commentFromDatabase.Video.url,
  73       comments: parentComments,
  74       isVideo: true,
  75       commentCreated
  76     })
  77   }
  78
  79   return undefined
  80 }
  81
  82 async function tryResolveThreadFromVideo (params: ResolveThreadParams) {
  83   const { url, comments, commentCreated } = params
  84
  85   // Maybe it's a reply to a video?
  86   // If yes, it's done: we resolved all the thread
  87   const syncParam = { likes: true, dislikes: true, shares: true, comments: false, thumbnail: true, refreshVideo: false }
  88   const { video } = await getOrCreateVideoAndAccountAndChannel({ videoObject: url, syncParam })
  89
  90   if (video.isOwned() && !video.hasPrivacyForFederation()) {
  91     throw new Error('Cannot resolve thread of video with privacy that is not compatible with federation')
  92   }
  93
  94   let resultComment: MCommentOwnerVideo
  95   if (comments.length !== 0) {
  96     const firstReply = comments[comments.length - 1] as MCommentOwnerVideo
  97     firstReply.inReplyToCommentId = null
  98     firstReply.originCommentId = null
  99     firstReply.videoId = video.id
 100     firstReply.changed('updatedAt', true)
 101     firstReply.Video = video
 102
 103     comments[comments.length - 1] = await firstReply.save()
 104
 105     for (let i = comments.length - 2; i >= 0; i--) {
 106       const comment = comments[i] as MCommentOwnerVideo
 107       comment.originCommentId = firstReply.id
 108       comment.inReplyToCommentId = comments[i + 1].id
 109       comment.videoId = video.id
 110       comment.changed('updatedAt', true)
 111       comment.Video = video
 112
 113       comments[i] = await comment.save()
 114     }
 115
 116     resultComment = comments[0] as MCommentOwnerVideo
 117   }
 118
 119   return { video, comment: resultComment, commentCreated }
 120 }
 121
 122 async function resolveRemoteParentComment (params: ResolveThreadParams) {
 123   const { url, comments } = params
 124
 125   if (comments.length > ACTIVITY_PUB.MAX_RECURSION_COMMENTS) {
 126     throw new Error('Recursion limit reached when resolving a thread')
 127   }
 128
 129   const { body } = await doJSONRequest<any>(url, { activityPub: true })
 130
 131   if (sanitizeAndCheckVideoCommentObject(body) === false) {
 132     throw new Error(`Remote video comment JSON ${url} is not valid:` + JSON.stringify(body))
 133   }
 134
 135   const actorUrl = body.attributedTo
 136   if (!actorUrl && body.type !== 'Tombstone') throw new Error('Miss attributed to in comment')
 137
 138   if (actorUrl && checkUrlsSameHost(url, actorUrl) !== true) {
 139     throw new Error(`Actor url ${actorUrl} has not the same host than the comment url ${url}`)
 140   }
 141
 142   if (checkUrlsSameHost(body.id, url) !== true) {
 143     throw new Error(`Comment url ${url} host is different from the AP object id ${body.id}`)
 144   }
 145
 146   const actor = actorUrl
 147     ? await getOrCreateActorAndServerAndModel(actorUrl, 'all')
 148     : null
 149
 150   const comment = new VideoCommentModel({
 151     url: body.id,
 152     text: body.content ? body.content : '',
 153     videoId: null,
 154     accountId: actor ? actor.Account.id : null,
 155     inReplyToCommentId: null,
 156     originCommentId: null,
 157     createdAt: new Date(body.published),
 158     updatedAt: new Date(body.updated),
 159     deletedAt: body.deleted ? new Date(body.deleted) : null
 160   }) as MCommentOwner
 161   comment.Account = actor ? actor.Account : null
 162
 163   return resolveThread({
 164     url: body.inReplyTo,
 165     comments: comments.concat([ comment ]),
 166     commentCreated: true
 167   })
 168 }