1 files changed, 455 insertions, 0 deletions

diff --git a/server/lib/notifier.ts b/server/lib/notifier.ts
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index 000000000..d1b331346
--- /dev/null
+++ b/server/lib/notifier.ts
@@ -0,0 +1,455 @@
+import { UserNotificationSettingValue, UserNotificationType, UserRight } from '../../shared/models/users'
+import { logger } from '../helpers/logger'
+import { VideoModel } from '../models/video/video'
+import { Emailer } from './emailer'
+import { UserNotificationModel } from '../models/account/user-notification'
+import { VideoCommentModel } from '../models/video/video-comment'
+import { UserModel } from '../models/account/user'
+import { PeerTubeSocket } from './peertube-socket'
+import { CONFIG } from '../initializers/constants'
+import { VideoPrivacy, VideoState } from '../../shared/models/videos'
+import { VideoAbuseModel } from '../models/video/video-abuse'
+import { VideoBlacklistModel } from '../models/video/video-blacklist'
+import * as Bluebird from 'bluebird'
+import { VideoImportModel } from '../models/video/video-import'
+import { AccountBlocklistModel } from '../models/account/account-blocklist'
+import { ActorFollowModel } from '../models/activitypub/actor-follow'
+import { AccountModel } from '../models/account/account'
+
+class Notifier {
+
+  private static instance: Notifier
+
+  private constructor () {}
+
+  notifyOnNewVideo (video: VideoModel): void {
+    // Only notify on public and published videos
+    if (video.privacy !== VideoPrivacy.PUBLIC || video.state !== VideoState.PUBLISHED) return
+
+    this.notifySubscribersOfNewVideo(video)
+      .catch(err => logger.error('Cannot notify subscribers of new video %s.', video.url, { err }))
+  }
+
+  notifyOnPendingVideoPublished (video: VideoModel): void {
+    // Only notify on public videos that has been published while the user waited transcoding/scheduled update
+    if (video.waitTranscoding === false && !video.ScheduleVideoUpdate) return
+
+    this.notifyOwnedVideoHasBeenPublished(video)
+        .catch(err => logger.error('Cannot notify owner that its video %s has been published.', video.url, { err }))
+  }
+
+  notifyOnNewComment (comment: VideoCommentModel): void {
+    this.notifyVideoOwnerOfNewComment(comment)
+        .catch(err => logger.error('Cannot notify video owner of new comment %s.', comment.url, { err }))
+
+    this.notifyOfCommentMention(comment)
+        .catch(err => logger.error('Cannot notify mentions of comment %s.', comment.url, { err }))
+  }
+
+  notifyOnNewVideoAbuse (videoAbuse: VideoAbuseModel): void {
+    this.notifyModeratorsOfNewVideoAbuse(videoAbuse)
+      .catch(err => logger.error('Cannot notify of new video abuse of video %s.', videoAbuse.Video.url, { err }))
+  }
+
+  notifyOnVideoBlacklist (videoBlacklist: VideoBlacklistModel): void {
+    this.notifyVideoOwnerOfBlacklist(videoBlacklist)
+      .catch(err => logger.error('Cannot notify video owner of new video blacklist of %s.', videoBlacklist.Video.url, { err }))
+  }
+
+  notifyOnVideoUnblacklist (video: VideoModel): void {
+    this.notifyVideoOwnerOfUnblacklist(video)
+        .catch(err => logger.error('Cannot notify video owner of new video blacklist of %s.', video.url, { err }))
+  }
+
+  notifyOnFinishedVideoImport (videoImport: VideoImportModel, success: boolean): void {
+    this.notifyOwnerVideoImportIsFinished(videoImport, success)
+      .catch(err => logger.error('Cannot notify owner that its video import %s is finished.', videoImport.getTargetIdentifier(), { err }))
+  }
+
+  notifyOnNewUserRegistration (user: UserModel): void {
+    this.notifyModeratorsOfNewUserRegistration(user)
+        .catch(err => logger.error('Cannot notify moderators of new user registration (%s).', user.username, { err }))
+  }
+
+  notifyOfNewFollow (actorFollow: ActorFollowModel): void {
+    this.notifyUserOfNewActorFollow(actorFollow)
+      .catch(err => {
+        logger.error(
+          'Cannot notify owner of channel %s of a new follow by %s.',
+          actorFollow.ActorFollowing.VideoChannel.getDisplayName(),
+          actorFollow.ActorFollower.Account.getDisplayName(),
+          err
+        )
+      })
+  }
+
+  private async notifySubscribersOfNewVideo (video: VideoModel) {
+    // List all followers that are users
+    const users = await UserModel.listUserSubscribersOf(video.VideoChannel.actorId)
+
+    logger.info('Notifying %d users of new video %s.', users.length, video.url)
+
+    function settingGetter (user: UserModel) {
+      return user.NotificationSetting.newVideoFromSubscription
+    }
+
+    async function notificationCreator (user: UserModel) {
+      const notification = await UserNotificationModel.create({
+        type: UserNotificationType.NEW_VIDEO_FROM_SUBSCRIPTION,
+        userId: user.id,
+        videoId: video.id
+      })
+      notification.Video = video
+
+      return notification
+    }
+
+    function emailSender (emails: string[]) {
+      return Emailer.Instance.addNewVideoFromSubscriberNotification(emails, video)
+    }
+
+    return this.notify({ users, settingGetter, notificationCreator, emailSender })
+  }
+
+  private async notifyVideoOwnerOfNewComment (comment: VideoCommentModel) {
+    if (comment.Video.isOwned() === false) return
+
+    const user = await UserModel.loadByVideoId(comment.videoId)
+
+    // Not our user or user comments its own video
+    if (!user || comment.Account.userId === user.id) return
+
+    const accountMuted = await AccountBlocklistModel.isAccountMutedBy(user.Account.id, comment.accountId)
+    if (accountMuted) return
+
+    logger.info('Notifying user %s of new comment %s.', user.username, comment.url)
+
+    function settingGetter (user: UserModel) {
+      return user.NotificationSetting.newCommentOnMyVideo
+    }
+
+    async function notificationCreator (user: UserModel) {
+      const notification = await UserNotificationModel.create({
+        type: UserNotificationType.NEW_COMMENT_ON_MY_VIDEO,
+        userId: user.id,
+        commentId: comment.id
+      })
+      notification.Comment = comment
+
+      return notification
+    }
+
+    function emailSender (emails: string[]) {
+      return Emailer.Instance.addNewCommentOnMyVideoNotification(emails, comment)
+    }
+
+    return this.notify({ users: [ user ], settingGetter, notificationCreator, emailSender })
+  }
+
+  private async notifyOfCommentMention (comment: VideoCommentModel) {
+    const usernames = comment.extractMentions()
+    let users = await UserModel.listByUsernames(usernames)
+
+    if (comment.Video.isOwned()) {
+      const userException = await UserModel.loadByVideoId(comment.videoId)
+      users = users.filter(u => u.id !== userException.id)
+    }
+
+    // Don't notify if I mentioned myself
+    users = users.filter(u => u.Account.id !== comment.accountId)
+
+    if (users.length === 0) return
+
+    const accountMutedHash = await AccountBlocklistModel.isAccountMutedByMulti(users.map(u => u.Account.id), comment.accountId)
+
+    logger.info('Notifying %d users of new comment %s.', users.length, comment.url)
+
+    function settingGetter (user: UserModel) {
+      if (accountMutedHash[user.Account.id] === true) return UserNotificationSettingValue.NONE
+
+      return user.NotificationSetting.commentMention
+    }
+
+    async function notificationCreator (user: UserModel) {
+      const notification = await UserNotificationModel.create({
+        type: UserNotificationType.COMMENT_MENTION,
+        userId: user.id,
+        commentId: comment.id
+      })
+      notification.Comment = comment
+
+      return notification
+    }
+
+    function emailSender (emails: string[]) {
+      return Emailer.Instance.addNewCommentMentionNotification(emails, comment)
+    }
+
+    return this.notify({ users, settingGetter, notificationCreator, emailSender })
+  }
+
+  private async notifyUserOfNewActorFollow (actorFollow: ActorFollowModel) {
+    if (actorFollow.ActorFollowing.isOwned() === false) return
+
+    // Account follows one of our account?
+    let followType: 'account' | 'channel' = 'channel'
+    let user = await UserModel.loadByChannelActorId(actorFollow.ActorFollowing.id)
+
+    // Account follows one of our channel?
+    if (!user) {
+      user = await UserModel.loadByAccountActorId(actorFollow.ActorFollowing.id)
+      followType = 'account'
+    }
+
+    if (!user) return
+
+    if (!actorFollow.ActorFollower.Account || !actorFollow.ActorFollower.Account.name) {
+      actorFollow.ActorFollower.Account = await actorFollow.ActorFollower.$get('Account') as AccountModel
+    }
+    const followerAccount = actorFollow.ActorFollower.Account
+
+    const accountMuted = await AccountBlocklistModel.isAccountMutedBy(user.Account.id, followerAccount.id)
+    if (accountMuted) return
+
+    logger.info('Notifying user %s of new follower: %s.', user.username, followerAccount.getDisplayName())
+
+    function settingGetter (user: UserModel) {
+      return user.NotificationSetting.newFollow
+    }
+
+    async function notificationCreator (user: UserModel) {
+      const notification = await UserNotificationModel.create({
+        type: UserNotificationType.NEW_FOLLOW,
+        userId: user.id,
+        actorFollowId: actorFollow.id
+      })
+      notification.ActorFollow = actorFollow
+
+      return notification
+    }
+
+    function emailSender (emails: string[]) {
+      return Emailer.Instance.addNewFollowNotification(emails, actorFollow, followType)
+    }
+
+    return this.notify({ users: [ user ], settingGetter, notificationCreator, emailSender })
+  }
+
+  private async notifyModeratorsOfNewVideoAbuse (videoAbuse: VideoAbuseModel) {
+    const moderators = await UserModel.listWithRight(UserRight.MANAGE_VIDEO_ABUSES)
+    if (moderators.length === 0) return
+
+    logger.info('Notifying %s user/moderators of new video abuse %s.', moderators.length, videoAbuse.Video.url)
+
+    function settingGetter (user: UserModel) {
+      return user.NotificationSetting.videoAbuseAsModerator
+    }
+
+    async function notificationCreator (user: UserModel) {
+      const notification = await UserNotificationModel.create({
+        type: UserNotificationType.NEW_VIDEO_ABUSE_FOR_MODERATORS,
+        userId: user.id,
+        videoAbuseId: videoAbuse.id
+      })
+      notification.VideoAbuse = videoAbuse
+
+      return notification
+    }
+
+    function emailSender (emails: string[]) {
+      return Emailer.Instance.addVideoAbuseModeratorsNotification(emails, videoAbuse)
+    }
+
+    return this.notify({ users: moderators, settingGetter, notificationCreator, emailSender })
+  }
+
+  private async notifyVideoOwnerOfBlacklist (videoBlacklist: VideoBlacklistModel) {
+    const user = await UserModel.loadByVideoId(videoBlacklist.videoId)
+    if (!user) return
+
+    logger.info('Notifying user %s that its video %s has been blacklisted.', user.username, videoBlacklist.Video.url)
+
+    function settingGetter (user: UserModel) {
+      return user.NotificationSetting.blacklistOnMyVideo
+    }
+
+    async function notificationCreator (user: UserModel) {
+      const notification = await UserNotificationModel.create({
+        type: UserNotificationType.BLACKLIST_ON_MY_VIDEO,
+        userId: user.id,
+        videoBlacklistId: videoBlacklist.id
+      })
+      notification.VideoBlacklist = videoBlacklist
+
+      return notification
+    }
+
+    function emailSender (emails: string[]) {
+      return Emailer.Instance.addVideoBlacklistNotification(emails, videoBlacklist)
+    }
+
+    return this.notify({ users: [ user ], settingGetter, notificationCreator, emailSender })
+  }
+
+  private async notifyVideoOwnerOfUnblacklist (video: VideoModel) {
+    const user = await UserModel.loadByVideoId(video.id)
+    if (!user) return
+
+    logger.info('Notifying user %s that its video %s has been unblacklisted.', user.username, video.url)
+
+    function settingGetter (user: UserModel) {
+      return user.NotificationSetting.blacklistOnMyVideo
+    }
+
+    async function notificationCreator (user: UserModel) {
+      const notification = await UserNotificationModel.create({
+        type: UserNotificationType.UNBLACKLIST_ON_MY_VIDEO,
+        userId: user.id,
+        videoId: video.id
+      })
+      notification.Video = video
+
+      return notification
+    }
+
+    function emailSender (emails: string[]) {
+      return Emailer.Instance.addVideoUnblacklistNotification(emails, video)
+    }
+
+    return this.notify({ users: [ user ], settingGetter, notificationCreator, emailSender })
+  }
+
+  private async notifyOwnedVideoHasBeenPublished (video: VideoModel) {
+    const user = await UserModel.loadByVideoId(video.id)
+    if (!user) return
+
+    logger.info('Notifying user %s of the publication of its video %s.', user.username, video.url)
+
+    function settingGetter (user: UserModel) {
+      return user.NotificationSetting.myVideoPublished
+    }
+
+    async function notificationCreator (user: UserModel) {
+      const notification = await UserNotificationModel.create({
+        type: UserNotificationType.MY_VIDEO_PUBLISHED,
+        userId: user.id,
+        videoId: video.id
+      })
+      notification.Video = video
+
+      return notification
+    }
+
+    function emailSender (emails: string[]) {
+      return Emailer.Instance.myVideoPublishedNotification(emails, video)
+    }
+
+    return this.notify({ users: [ user ], settingGetter, notificationCreator, emailSender })
+  }
+
+  private async notifyOwnerVideoImportIsFinished (videoImport: VideoImportModel, success: boolean) {
+    const user = await UserModel.loadByVideoImportId(videoImport.id)
+    if (!user) return
+
+    logger.info('Notifying user %s its video import %s is finished.', user.username, videoImport.getTargetIdentifier())
+
+    function settingGetter (user: UserModel) {
+      return user.NotificationSetting.myVideoImportFinished
+    }
+
+    async function notificationCreator (user: UserModel) {
+      const notification = await UserNotificationModel.create({
+        type: success ? UserNotificationType.MY_VIDEO_IMPORT_SUCCESS : UserNotificationType.MY_VIDEO_IMPORT_ERROR,
+        userId: user.id,
+        videoImportId: videoImport.id
+      })
+      notification.VideoImport = videoImport
+
+      return notification
+    }
+
+    function emailSender (emails: string[]) {
+      return success
+        ? Emailer.Instance.myVideoImportSuccessNotification(emails, videoImport)
+        : Emailer.Instance.myVideoImportErrorNotification(emails, videoImport)
+    }
+
+    return this.notify({ users: [ user ], settingGetter, notificationCreator, emailSender })
+  }
+
+  private async notifyModeratorsOfNewUserRegistration (registeredUser: UserModel) {
+    const moderators = await UserModel.listWithRight(UserRight.MANAGE_USERS)
+    if (moderators.length === 0) return
+
+    logger.info(
+      'Notifying %s moderators of new user registration of %s.',
+      moderators.length, registeredUser.Account.Actor.preferredUsername
+    )
+
+    function settingGetter (user: UserModel) {
+      return user.NotificationSetting.newUserRegistration
+    }
+
+    async function notificationCreator (user: UserModel) {
+      const notification = await UserNotificationModel.create({
+        type: UserNotificationType.NEW_USER_REGISTRATION,
+        userId: user.id,
+        accountId: registeredUser.Account.id
+      })
+      notification.Account = registeredUser.Account
+
+      return notification
+    }
+
+    function emailSender (emails: string[]) {
+      return Emailer.Instance.addNewUserRegistrationNotification(emails, registeredUser)
+    }
+
+    return this.notify({ users: moderators, settingGetter, notificationCreator, emailSender })
+  }
+
+  private async notify (options: {
+    users: UserModel[],
+    notificationCreator: (user: UserModel) => Promise<UserNotificationModel>,
+    emailSender: (emails: string[]) => Promise<any> | Bluebird<any>,
+    settingGetter: (user: UserModel) => UserNotificationSettingValue
+  }) {
+    const emails: string[] = []
+
+    for (const user of options.users) {
+      if (this.isWebNotificationEnabled(options.settingGetter(user))) {
+        const notification = await options.notificationCreator(user)
+
+        PeerTubeSocket.Instance.sendNotification(user.id, notification)
+      }
+
+      if (this.isEmailEnabled(user, options.settingGetter(user))) {
+        emails.push(user.email)
+      }
+    }
+
+    if (emails.length !== 0) {
+      await options.emailSender(emails)
+    }
+  }
+
+  private isEmailEnabled (user: UserModel, value: UserNotificationSettingValue) {
+    if (CONFIG.SIGNUP.REQUIRES_EMAIL_VERIFICATION === true && user.emailVerified !== true) return false
+
+    return value & UserNotificationSettingValue.EMAIL
+  }
+
+  private isWebNotificationEnabled (value: UserNotificationSettingValue) {
+    return value & UserNotificationSettingValue.WEB
+  }
+
+  static get Instance () {
+    return this.instance || (this.instance = new this())
+  }
+}
+
+// ---------------------------------------------------------------------------
+
+export {
+  Notifier
+}