1 files changed, 224 insertions, 49 deletions

diff --git a/server/lib/activitypub/videos.ts b/server/lib/activitypub/videos.ts
index 8bc928b93..708f4a897 100644
--- a/server/lib/activitypub/videos.ts
+++ b/server/lib/activitypub/videos.ts
@@ -1,15 +1,23 @@
+import * as Bluebird from 'bluebird'
+import * as magnetUtil from 'magnet-uri'
 import { join } from 'path'
 import * as request from 'request'
-import { Transaction } from 'sequelize'
 import { ActivityIconObject } from '../../../shared/index'
+import { VideoTorrentObject } from '../../../shared/models/activitypub/objects'
+import { VideoPrivacy } from '../../../shared/models/videos'
+import { isVideoTorrentObjectValid } from '../../helpers/custom-validators/activitypub/videos'
+import { isVideoFileInfoHashValid } from '../../helpers/custom-validators/videos'
+import { retryTransactionWrapper } from '../../helpers/database-utils'
+import { logger } from '../../helpers/logger'
 import { doRequest, doRequestAndSaveToFile } from '../../helpers/requests'
-import { CONFIG, REMOTE_SCHEME, STATIC_PATHS } from '../../initializers'
-import { AccountModel } from '../../models/account/account'
+import { ACTIVITY_PUB, CONFIG, REMOTE_SCHEME, sequelizeTypescript, STATIC_PATHS, VIDEO_MIMETYPE_EXT } from '../../initializers'
+import { ActorModel } from '../../models/activitypub/actor'
+import { TagModel } from '../../models/video/tag'
 import { VideoModel } from '../../models/video/video'
-import {
-  sendCreateDislikeToOrigin, sendCreateDislikeToVideoFollowers, sendLikeToOrigin, sendLikeToVideoFollowers, sendUndoDislikeToOrigin,
-  sendUndoDislikeToVideoFollowers, sendUndoLikeToOrigin, sendUndoLikeToVideoFollowers
-} from './send'
+import { VideoChannelModel } from '../../models/video/video-channel'
+import { VideoFileModel } from '../../models/video/video-file'
+import { VideoShareModel } from '../../models/video/video-share'
+import { getOrCreateActorAndServerAndModel } from './actor'
 
 function fetchRemoteVideoPreview (video: VideoModel, reject: Function) {
   // FIXME: use url
@@ -45,54 +53,221 @@ function generateThumbnailFromUrl (video: VideoModel, icon: ActivityIconObject)
   return doRequestAndSaveToFile(options, thumbnailPath)
 }
 
-async function sendVideoRateChangeToFollowers (
-  account: AccountModel,
-  video: VideoModel,
-  likes: number,
-  dislikes: number,
-  t: Transaction
-) {
-  const actor = account.Actor
-
-  // Keep the order: first we undo and then we create
-
-  // Undo Like
-  if (likes < 0) await sendUndoLikeToVideoFollowers(actor, video, t)
-  // Undo Dislike
-  if (dislikes < 0) await sendUndoDislikeToVideoFollowers(actor, video, t)
-
-  // Like
-  if (likes > 0) await sendLikeToVideoFollowers(actor, video, t)
-  // Dislike
-  if (dislikes > 0) await sendCreateDislikeToVideoFollowers(actor, video, t)
+async function videoActivityObjectToDBAttributes (videoChannel: VideoChannelModel,
+                                                  videoObject: VideoTorrentObject,
+                                                  to: string[] = [],
+                                                  cc: string[] = []) {
+  let privacy = VideoPrivacy.PRIVATE
+  if (to.indexOf(ACTIVITY_PUB.PUBLIC) !== -1) privacy = VideoPrivacy.PUBLIC
+  else if (cc.indexOf(ACTIVITY_PUB.PUBLIC) !== -1) privacy = VideoPrivacy.UNLISTED
+
+  const duration = videoObject.duration.replace(/[^\d]+/, '')
+  let language = null
+  if (videoObject.language) {
+    language = parseInt(videoObject.language.identifier, 10)
+  }
+
+  let category = null
+  if (videoObject.category) {
+    category = parseInt(videoObject.category.identifier, 10)
+  }
+
+  let licence = null
+  if (videoObject.licence) {
+    licence = parseInt(videoObject.licence.identifier, 10)
+  }
+
+  let description = null
+  if (videoObject.content) {
+    description = videoObject.content
+  }
+
+  return {
+    name: videoObject.name,
+    uuid: videoObject.uuid,
+    url: videoObject.id,
+    category,
+    licence,
+    language,
+    description,
+    nsfw: videoObject.nsfw,
+    commentsEnabled: videoObject.commentsEnabled,
+    channelId: videoChannel.id,
+    duration: parseInt(duration, 10),
+    createdAt: new Date(videoObject.published),
+    // FIXME: updatedAt does not seems to be considered by Sequelize
+    updatedAt: new Date(videoObject.updated),
+    views: videoObject.views,
+    likes: 0,
+    dislikes: 0,
+    remote: true,
+    privacy
+  }
+}
+
+function videoFileActivityUrlToDBAttributes (videoCreated: VideoModel, videoObject: VideoTorrentObject) {
+  const mimeTypes = Object.keys(VIDEO_MIMETYPE_EXT)
+  const fileUrls = videoObject.url.filter(u => {
+    return mimeTypes.indexOf(u.mimeType) !== -1 && u.mimeType.startsWith('video/')
+  })
+
+  if (fileUrls.length === 0) {
+    throw new Error('Cannot find video files for ' + videoCreated.url)
+  }
+
+  const attributes = []
+  for (const fileUrl of fileUrls) {
+    // Fetch associated magnet uri
+    const magnet = videoObject.url.find(u => {
+      return u.mimeType === 'application/x-bittorrent;x-scheme-handler/magnet' && u.width === fileUrl.width
+    })
+
+    if (!magnet) throw new Error('Cannot find associated magnet uri for file ' + fileUrl.url)
+
+    const parsed = magnetUtil.decode(magnet.url)
+    if (!parsed || isVideoFileInfoHashValid(parsed.infoHash) === false) throw new Error('Cannot parse magnet URI ' + magnet.url)
+
+    const attribute = {
+      extname: VIDEO_MIMETYPE_EXT[ fileUrl.mimeType ],
+      infoHash: parsed.infoHash,
+      resolution: fileUrl.width,
+      size: fileUrl.size,
+      videoId: videoCreated.id
+    }
+    attributes.push(attribute)
+  }
+
+  return attributes
+}
+
+async function getOrCreateVideo (videoObject: VideoTorrentObject, channelActor: ActorModel) {
+  logger.debug('Adding remote video %s.', videoObject.id)
+
+  return sequelizeTypescript.transaction(async t => {
+    const sequelizeOptions = {
+      transaction: t
+    }
+    const videoFromDatabase = await VideoModel.loadByUUIDOrURLAndPopulateAccount(videoObject.uuid, videoObject.id, t)
+    if (videoFromDatabase) return videoFromDatabase
+
+    const videoData = await videoActivityObjectToDBAttributes(channelActor.VideoChannel, videoObject, videoObject.to, videoObject.cc)
+    const video = VideoModel.build(videoData)
+
+    // Don't block on request
+    generateThumbnailFromUrl(video, videoObject.icon)
+      .catch(err => logger.warn('Cannot generate thumbnail of %s.', videoObject.id, err))
+
+    const videoCreated = await video.save(sequelizeOptions)
+
+    const videoFileAttributes = videoFileActivityUrlToDBAttributes(videoCreated, videoObject)
+    if (videoFileAttributes.length === 0) {
+      throw new Error('Cannot find valid files for video %s ' + videoObject.url)
+    }
+
+    const tasks: Bluebird<any>[] = videoFileAttributes.map(f => VideoFileModel.create(f, { transaction: t }))
+    await Promise.all(tasks)
+
+    const tags = videoObject.tag.map(t => t.name)
+    const tagInstances = await TagModel.findOrCreateTags(tags, t)
+    await videoCreated.$set('Tags', tagInstances, sequelizeOptions)
+
+    logger.info('Remote video with uuid %s inserted.', videoObject.uuid)
+
+    videoCreated.VideoChannel = channelActor.VideoChannel
+    return videoCreated
+  })
 }
 
-async function sendVideoRateChangeToOrigin (
-  account: AccountModel,
-  video: VideoModel,
-  likes: number,
-  dislikes: number,
-  t: Transaction
-) {
-  const actor = account.Actor
-
-  // Keep the order: first we undo and then we create
-
-  // Undo Like
-  if (likes < 0) await sendUndoLikeToOrigin(actor, video, t)
-  // Undo Dislike
-  if (dislikes < 0) await sendUndoDislikeToOrigin(actor, video, t)
-
-  // Like
-  if (likes > 0) await sendLikeToOrigin(actor, video, t)
-  // Dislike
-  if (dislikes > 0) await sendCreateDislikeToOrigin(actor, video, t)
+async function getOrCreateAccountAndVideoAndChannel (videoObject: VideoTorrentObject | string, actor?: ActorModel) {
+  if (typeof videoObject === 'string') {
+    const videoFromDatabase = await VideoModel.loadByUrlAndPopulateAccount(videoObject)
+    if (videoFromDatabase) {
+      return {
+        video: videoFromDatabase,
+        actor: videoFromDatabase.VideoChannel.Account.Actor,
+        channelActor: videoFromDatabase.VideoChannel.Actor
+      }
+    }
+
+    videoObject = await fetchRemoteVideo(videoObject)
+    if (!videoObject) throw new Error('Cannot fetch remote video')
+  }
+
+  if (!actor) {
+    const actorObj = videoObject.attributedTo.find(a => a.type === 'Person')
+    if (!actorObj) throw new Error('Cannot find associated actor to video ' + videoObject.url)
+
+    actor = await getOrCreateActorAndServerAndModel(actorObj.id)
+  }
+
+  const channel = videoObject.attributedTo.find(a => a.type === 'Group')
+  if (!channel) throw new Error('Cannot find associated video channel to video ' + videoObject.url)
+
+  const channelActor = await getOrCreateActorAndServerAndModel(channel.id)
+
+  const options = {
+    arguments: [ videoObject, channelActor ],
+    errorMessage: 'Cannot insert the remote video with many retries.'
+  }
+
+  const video = await retryTransactionWrapper(getOrCreateVideo, options)
+
+  return { actor, channelActor, video }
+}
+
+async function addVideoShares (instance: VideoModel, shareUrls: string[]) {
+  for (const shareUrl of shareUrls) {
+    // Fetch url
+    const { body } = await doRequest({
+      uri: shareUrl,
+      json: true,
+      activityPub: true
+    })
+    const actorUrl = body.actor
+    if (!actorUrl) continue
+
+    const actor = await getOrCreateActorAndServerAndModel(actorUrl)
+
+    const entry = {
+      actorId: actor.id,
+      videoId: instance.id
+    }
+
+    await VideoShareModel.findOrCreate({
+      where: entry,
+      defaults: entry
+    })
+  }
 }
 
 export {
+  getOrCreateAccountAndVideoAndChannel,
   fetchRemoteVideoPreview,
   fetchRemoteVideoDescription,
   generateThumbnailFromUrl,
-  sendVideoRateChangeToFollowers,
-  sendVideoRateChangeToOrigin
+  videoActivityObjectToDBAttributes,
+  videoFileActivityUrlToDBAttributes,
+  getOrCreateVideo,
+  addVideoShares}
+
+// ---------------------------------------------------------------------------
+
+async function fetchRemoteVideo (videoUrl: string): Promise<VideoTorrentObject> {
+  const options = {
+    uri: videoUrl,
+    method: 'GET',
+    json: true,
+    activityPub: true
+  }
+
+  logger.info('Fetching remote video %s.', videoUrl)
+
+  const { body } = await doRequest(options)
+
+  if (isVideoTorrentObjectValid(body) === false) {
+    logger.debug('Remote video JSON is not valid.', { body })
+    return undefined
+  }
+
+  return body
 }