server/lib/activitypub/video-comments.ts

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