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import { VideoCommentObject } from '../../../shared/models/activitypub/objects/video-comment-object'
import { sanitizeAndCheckVideoCommentObject } from '../../helpers/custom-validators/activitypub/video-comments'
import { logger } from '../../helpers/logger'
import { doRequest } from '../../helpers/requests'
import { ACTIVITY_PUB, CRAWL_REQUEST_CONCURRENCY } from '../../initializers/constants'
import { ActorModel } from '../../models/activitypub/actor'
import { VideoModel } from '../../models/video/video'
import { VideoCommentModel } from '../../models/video/video-comment'
import { getOrCreateActorAndServerAndModel } from './actor'
import { getOrCreateVideoAndAccountAndChannel } from './videos'
import * as Bluebird from 'bluebird'
import { checkUrlsSameHost } from '../../helpers/activitypub'
async function videoCommentActivityObjectToDBAttributes (video: VideoModel, actor: ActorModel, comment: VideoCommentObject) {
let originCommentId: number = null
let inReplyToCommentId: number = null
// If this is not a reply to the video (thread), create or get the parent comment
if (video.url !== comment.inReplyTo) {
const { comment: parent } = await addVideoComment(video, comment.inReplyTo)
if (!parent) {
logger.warn('Cannot fetch or get parent comment %s of comment %s.', comment.inReplyTo, comment.id)
return undefined
}
originCommentId = parent.originCommentId || parent.id
inReplyToCommentId = parent.id
}
return {
url: comment.id,
text: comment.content,
videoId: video.id,
accountId: actor.Account.id,
inReplyToCommentId,
originCommentId,
createdAt: new Date(comment.published)
}
}
async function addVideoComments (commentUrls: string[], instance: VideoModel) {
return Bluebird.map(commentUrls, commentUrl => {
return addVideoComment(instance, commentUrl)
}, { concurrency: CRAWL_REQUEST_CONCURRENCY })
}
async function addVideoComment (videoInstance: VideoModel, commentUrl: string) {
logger.info('Fetching remote video comment %s.', commentUrl)
const { body } = await doRequest({
uri: commentUrl,
json: true,
activityPub: true
})
if (sanitizeAndCheckVideoCommentObject(body) === false) {
logger.debug('Remote video comment JSON is not valid.', { body })
return { created: false }
}
const actorUrl = body.attributedTo
if (!actorUrl) return { created: false }
if (checkUrlsSameHost(commentUrl, actorUrl) !== true) {
throw new Error(`Actor url ${actorUrl} has not the same host than the comment url ${commentUrl}`)
}
if (checkUrlsSameHost(body.id, commentUrl) !== true) {
throw new Error(`Comment url ${commentUrl} host is different from the AP object id ${body.id}`)
}
const actor = await getOrCreateActorAndServerAndModel(actorUrl, 'all')
const entry = await videoCommentActivityObjectToDBAttributes(videoInstance, actor, body)
if (!entry) return { created: false }
const [ comment, created ] = await VideoCommentModel.upsert<VideoCommentModel>(entry, { returning: true })
comment.Account = actor.Account
comment.Video = videoInstance
return { comment, created }
}
type ResolveThreadResult = Promise<{ video: VideoModel, parents: VideoCommentModel[] }>
async function resolveThread (url: string, comments: VideoCommentModel[] = []): ResolveThreadResult {
// Already have this comment?
const commentFromDatabase = await VideoCommentModel.loadByUrlAndPopulateReplyAndVideo(url)
if (commentFromDatabase) {
let parentComments = comments.concat([ commentFromDatabase ])
// Speed up things and resolve directly the thread
if (commentFromDatabase.InReplyToVideoComment) {
const data = await VideoCommentModel.listThreadParentComments(commentFromDatabase, undefined, 'DESC')
parentComments = parentComments.concat(data)
}
return resolveThread(commentFromDatabase.Video.url, parentComments)
}
try {
// Maybe it's a reply to a video?
// If yes, it's done: we resolved all the thread
const { video } = await getOrCreateVideoAndAccountAndChannel({ videoObject: url })
if (comments.length !== 0) {
const firstReply = comments[ comments.length - 1 ]
firstReply.inReplyToCommentId = null
firstReply.originCommentId = null
firstReply.videoId = video.id
comments[comments.length - 1] = await firstReply.save()
for (let i = comments.length - 2; i >= 0; i--) {
const comment = comments[ i ]
comment.originCommentId = firstReply.id
comment.inReplyToCommentId = comments[ i + 1 ].id
comment.videoId = video.id
comments[i] = await comment.save()
}
}
return { video, parents: comments }
} catch (err) {
logger.debug('Cannot get or create account and video and channel for reply %s, fetch comment', url, { err })
if (comments.length > ACTIVITY_PUB.MAX_RECURSION_COMMENTS) {
throw new Error('Recursion limit reached when resolving a thread')
}
const { body } = await doRequest({
uri: url,
json: true,
activityPub: true
})
if (sanitizeAndCheckVideoCommentObject(body) === false) {
throw new Error('Remote video comment JSON is not valid:' + JSON.stringify(body))
}
const actorUrl = body.attributedTo
if (!actorUrl) throw new Error('Miss attributed to in comment')
if (checkUrlsSameHost(url, actorUrl) !== true) {
throw new Error(`Actor url ${actorUrl} has not the same host than the comment url ${url}`)
}
if (checkUrlsSameHost(body.id, url) !== true) {
throw new Error(`Comment url ${url} host is different from the AP object id ${body.id}`)
}
const actor = await getOrCreateActorAndServerAndModel(actorUrl)
const comment = new VideoCommentModel({
url: body.id,
text: body.content,
videoId: null,
accountId: actor.Account.id,
inReplyToCommentId: null,
originCommentId: null,
createdAt: new Date(body.published),
updatedAt: new Date(body.updated)
})
return resolveThread(body.inReplyTo, comments.concat([ comment ]))
}
}
export {
videoCommentActivityObjectToDBAttributes,
addVideoComments,
addVideoComment,
resolveThread
}
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