server/lib/notifier.ts

   1 import { AccountModel } from '@server/models/account/account'
   2 import { getServerActor } from '@server/models/application/application'
   3 import { ServerBlocklistModel } from '@server/models/server/server-blocklist'
   4 import {
   5   MUser,
   6   MUserAccount,
   7   MUserDefault,
   8   MUserNotifSettingAccount,
   9   MUserWithNotificationSetting,
  10   UserNotificationModelForApi
  11 } from '@server/types/models/user'
  12 import { MVideoBlacklistLightVideo, MVideoBlacklistVideo } from '@server/types/models/video/video-blacklist'
  13 import { MVideoImportVideo } from '@server/types/models/video/video-import'
  14 import { UserAbuse } from '@shared/models'
  15 import { UserNotificationSettingValue, UserNotificationType, UserRight } from '../../shared/models/users'
  16 import { VideoPrivacy, VideoState } from '../../shared/models/videos'
  17 import { logger } from '../helpers/logger'
  18 import { CONFIG } from '../initializers/config'
  19 import { AccountBlocklistModel } from '../models/account/account-blocklist'
  20 import { UserModel } from '../models/account/user'
  21 import { UserNotificationModel } from '../models/account/user-notification'
  22 import { MAbuseFull, MAbuseMessage, MAccountServer, MActorFollowFull } from '../types/models'
  23 import { MCommentOwnerVideo, MVideoAccountLight, MVideoFullLight } from '../types/models/video'
  24 import { isBlockedByServerOrAccount } from './blocklist'
  25 import { Emailer } from './emailer'
  26 import { PeerTubeSocket } from './peertube-socket'
  27
  28 class Notifier {
  29
  30   private static instance: Notifier
  31
  32   private constructor () {
  33   }
  34
  35   notifyOnNewVideoIfNeeded (video: MVideoAccountLight): void {
  36     // Only notify on public and published videos which are not blacklisted
  37     if (video.privacy !== VideoPrivacy.PUBLIC || video.state !== VideoState.PUBLISHED || video.isBlacklisted()) return
  38
  39     this.notifySubscribersOfNewVideo(video)
  40         .catch(err => logger.error('Cannot notify subscribers of new video %s.', video.url, { err }))
  41   }
  42
  43   notifyOnVideoPublishedAfterTranscoding (video: MVideoFullLight): void {
  44     // don't notify if didn't wait for transcoding or video is still blacklisted/waiting for scheduled update
  45     if (!video.waitTranscoding || video.VideoBlacklist || video.ScheduleVideoUpdate) return
  46
  47     this.notifyOwnedVideoHasBeenPublished(video)
  48         .catch(err => logger.error('Cannot notify owner that its video %s has been published after transcoding.', video.url, { err }))
  49   }
  50
  51   notifyOnVideoPublishedAfterScheduledUpdate (video: MVideoFullLight): void {
  52     // don't notify if video is still blacklisted or waiting for transcoding
  53     if (video.VideoBlacklist || (video.waitTranscoding && video.state !== VideoState.PUBLISHED)) return
  54
  55     this.notifyOwnedVideoHasBeenPublished(video)
  56         .catch(err => logger.error('Cannot notify owner that its video %s has been published after scheduled update.', video.url, { err }))
  57   }
  58
  59   notifyOnVideoPublishedAfterRemovedFromAutoBlacklist (video: MVideoFullLight): void {
  60     // don't notify if video is still waiting for transcoding or scheduled update
  61     if (video.ScheduleVideoUpdate || (video.waitTranscoding && video.state !== VideoState.PUBLISHED)) return
  62
  63     this.notifyOwnedVideoHasBeenPublished(video)
  64         .catch(err => {
  65           logger.error('Cannot notify owner that its video %s has been published after removed from auto-blacklist.', video.url, { err })
  66         })
  67   }
  68
  69   notifyOnNewComment (comment: MCommentOwnerVideo): void {
  70     this.notifyVideoOwnerOfNewComment(comment)
  71         .catch(err => logger.error('Cannot notify video owner of new comment %s.', comment.url, { err }))
  72
  73     this.notifyOfCommentMention(comment)
  74         .catch(err => logger.error('Cannot notify mentions of comment %s.', comment.url, { err }))
  75   }
  76
  77   notifyOnNewAbuse (parameters: { abuse: UserAbuse, abuseInstance: MAbuseFull, reporter: string }): void {
  78     this.notifyModeratorsOfNewAbuse(parameters)
  79         .catch(err => logger.error('Cannot notify of new abuse %d.', parameters.abuseInstance.id, { err }))
  80   }
  81
  82   notifyOnVideoAutoBlacklist (videoBlacklist: MVideoBlacklistLightVideo): void {
  83     this.notifyModeratorsOfVideoAutoBlacklist(videoBlacklist)
  84         .catch(err => logger.error('Cannot notify of auto-blacklist of video %s.', videoBlacklist.Video.url, { err }))
  85   }
  86
  87   notifyOnVideoBlacklist (videoBlacklist: MVideoBlacklistVideo): void {
  88     this.notifyVideoOwnerOfBlacklist(videoBlacklist)
  89         .catch(err => logger.error('Cannot notify video owner of new video blacklist of %s.', videoBlacklist.Video.url, { err }))
  90   }
  91
  92   notifyOnVideoUnblacklist (video: MVideoFullLight): void {
  93     this.notifyVideoOwnerOfUnblacklist(video)
  94         .catch(err => logger.error('Cannot notify video owner of unblacklist of %s.', video.url, { err }))
  95   }
  96
  97   notifyOnFinishedVideoImport (videoImport: MVideoImportVideo, success: boolean): void {
  98     this.notifyOwnerVideoImportIsFinished(videoImport, success)
  99         .catch(err => logger.error('Cannot notify owner that its video import %s is finished.', videoImport.getTargetIdentifier(), { err }))
 100   }
 101
 102   notifyOnNewUserRegistration (user: MUserDefault): void {
 103     this.notifyModeratorsOfNewUserRegistration(user)
 104         .catch(err => logger.error('Cannot notify moderators of new user registration (%s).', user.username, { err }))
 105   }
 106
 107   notifyOfNewUserFollow (actorFollow: MActorFollowFull): void {
 108     this.notifyUserOfNewActorFollow(actorFollow)
 109         .catch(err => {
 110           logger.error(
 111             'Cannot notify owner of channel %s of a new follow by %s.',
 112             actorFollow.ActorFollowing.VideoChannel.getDisplayName(),
 113             actorFollow.ActorFollower.Account.getDisplayName(),
 114             { err }
 115           )
 116         })
 117   }
 118
 119   notifyOfNewInstanceFollow (actorFollow: MActorFollowFull): void {
 120     this.notifyAdminsOfNewInstanceFollow(actorFollow)
 121         .catch(err => {
 122           logger.error('Cannot notify administrators of new follower %s.', actorFollow.ActorFollower.url, { err })
 123         })
 124   }
 125
 126   notifyOfAutoInstanceFollowing (actorFollow: MActorFollowFull): void {
 127     this.notifyAdminsOfAutoInstanceFollowing(actorFollow)
 128         .catch(err => {
 129           logger.error('Cannot notify administrators of auto instance following %s.', actorFollow.ActorFollowing.url, { err })
 130         })
 131   }
 132
 133   notifyOnAbuseStateChange (abuse: MAbuseFull): void {
 134     this.notifyReporterOfAbuseStateChange(abuse)
 135       .catch(err => {
 136         logger.error('Cannot notify reporter of abuse %d state change.', abuse.id, { err })
 137       })
 138   }
 139
 140   notifyOnAbuseMessage (abuse: MAbuseFull, message: MAbuseMessage): void {
 141     this.notifyOfNewAbuseMessage(abuse, message)
 142       .catch(err => {
 143         logger.error('Cannot notify on new abuse %d message.', abuse.id, { err })
 144       })
 145   }
 146
 147   private async notifySubscribersOfNewVideo (video: MVideoAccountLight) {
 148     // List all followers that are users
 149     const users = await UserModel.listUserSubscribersOf(video.VideoChannel.actorId)
 150
 151     logger.info('Notifying %d users of new video %s.', users.length, video.url)
 152
 153     function settingGetter (user: MUserWithNotificationSetting) {
 154       return user.NotificationSetting.newVideoFromSubscription
 155     }
 156
 157     async function notificationCreator (user: MUserWithNotificationSetting) {
 158       const notification = await UserNotificationModel.create<UserNotificationModelForApi>({
 159         type: UserNotificationType.NEW_VIDEO_FROM_SUBSCRIPTION,
 160         userId: user.id,
 161         videoId: video.id
 162       })
 163       notification.Video = video
 164
 165       return notification
 166     }
 167
 168     function emailSender (emails: string[]) {
 169       return Emailer.Instance.addNewVideoFromSubscriberNotification(emails, video)
 170     }
 171
 172     return this.notify({ users, settingGetter, notificationCreator, emailSender })
 173   }
 174
 175   private async notifyVideoOwnerOfNewComment (comment: MCommentOwnerVideo) {
 176     if (comment.Video.isOwned() === false) return
 177
 178     const user = await UserModel.loadByVideoId(comment.videoId)
 179
 180     // Not our user or user comments its own video
 181     if (!user || comment.Account.userId === user.id) return
 182
 183     if (await this.isBlockedByServerOrUser(comment.Account, user)) return
 184
 185     logger.info('Notifying user %s of new comment %s.', user.username, comment.url)
 186
 187     function settingGetter (user: MUserWithNotificationSetting) {
 188       return user.NotificationSetting.newCommentOnMyVideo
 189     }
 190
 191     async function notificationCreator (user: MUserWithNotificationSetting) {
 192       const notification = await UserNotificationModel.create<UserNotificationModelForApi>({
 193         type: UserNotificationType.NEW_COMMENT_ON_MY_VIDEO,
 194         userId: user.id,
 195         commentId: comment.id
 196       })
 197       notification.Comment = comment
 198
 199       return notification
 200     }
 201
 202     function emailSender (emails: string[]) {
 203       return Emailer.Instance.addNewCommentOnMyVideoNotification(emails, comment)
 204     }
 205
 206     return this.notify({ users: [ user ], settingGetter, notificationCreator, emailSender })
 207   }
 208
 209   private async notifyOfCommentMention (comment: MCommentOwnerVideo) {
 210     const extractedUsernames = comment.extractMentions()
 211     logger.debug(
 212       'Extracted %d username from comment %s.', extractedUsernames.length, comment.url,
 213       { usernames: extractedUsernames, text: comment.text }
 214     )
 215
 216     let users = await UserModel.listByUsernames(extractedUsernames)
 217
 218     if (comment.Video.isOwned()) {
 219       const userException = await UserModel.loadByVideoId(comment.videoId)
 220       users = users.filter(u => u.id !== userException.id)
 221     }
 222
 223     // Don't notify if I mentioned myself
 224     users = users.filter(u => u.Account.id !== comment.accountId)
 225
 226     if (users.length === 0) return
 227
 228     const serverAccountId = (await getServerActor()).Account.id
 229     const sourceAccounts = users.map(u => u.Account.id).concat([ serverAccountId ])
 230
 231     const accountMutedHash = await AccountBlocklistModel.isAccountMutedByMulti(sourceAccounts, comment.accountId)
 232     const instanceMutedHash = await ServerBlocklistModel.isServerMutedByMulti(sourceAccounts, comment.Account.Actor.serverId)
 233
 234     logger.info('Notifying %d users of new comment %s.', users.length, comment.url)
 235
 236     function settingGetter (user: MUserNotifSettingAccount) {
 237       const accountId = user.Account.id
 238       if (
 239         accountMutedHash[accountId] === true || instanceMutedHash[accountId] === true ||
 240         accountMutedHash[serverAccountId] === true || instanceMutedHash[serverAccountId] === true
 241       ) {
 242         return UserNotificationSettingValue.NONE
 243       }
 244
 245       return user.NotificationSetting.commentMention
 246     }
 247
 248     async function notificationCreator (user: MUserNotifSettingAccount) {
 249       const notification = await UserNotificationModel.create<UserNotificationModelForApi>({
 250         type: UserNotificationType.COMMENT_MENTION,
 251         userId: user.id,
 252         commentId: comment.id
 253       })
 254       notification.Comment = comment
 255
 256       return notification
 257     }
 258
 259     function emailSender (emails: string[]) {
 260       return Emailer.Instance.addNewCommentMentionNotification(emails, comment)
 261     }
 262
 263     return this.notify({ users, settingGetter, notificationCreator, emailSender })
 264   }
 265
 266   private async notifyUserOfNewActorFollow (actorFollow: MActorFollowFull) {
 267     if (actorFollow.ActorFollowing.isOwned() === false) return
 268
 269     // Account follows one of our account?
 270     let followType: 'account' | 'channel' = 'channel'
 271     let user = await UserModel.loadByChannelActorId(actorFollow.ActorFollowing.id)
 272
 273     // Account follows one of our channel?
 274     if (!user) {
 275       user = await UserModel.loadByAccountActorId(actorFollow.ActorFollowing.id)
 276       followType = 'account'
 277     }
 278
 279     if (!user) return
 280
 281     const followerAccount = actorFollow.ActorFollower.Account
 282     const followerAccountWithActor = Object.assign(followerAccount, { Actor: actorFollow.ActorFollower })
 283
 284     if (await this.isBlockedByServerOrUser(followerAccountWithActor, user)) return
 285
 286     logger.info('Notifying user %s of new follower: %s.', user.username, followerAccount.getDisplayName())
 287
 288     function settingGetter (user: MUserWithNotificationSetting) {
 289       return user.NotificationSetting.newFollow
 290     }
 291
 292     async function notificationCreator (user: MUserWithNotificationSetting) {
 293       const notification = await UserNotificationModel.create<UserNotificationModelForApi>({
 294         type: UserNotificationType.NEW_FOLLOW,
 295         userId: user.id,
 296         actorFollowId: actorFollow.id
 297       })
 298       notification.ActorFollow = actorFollow
 299
 300       return notification
 301     }
 302
 303     function emailSender (emails: string[]) {
 304       return Emailer.Instance.addNewFollowNotification(emails, actorFollow, followType)
 305     }
 306
 307     return this.notify({ users: [ user ], settingGetter, notificationCreator, emailSender })
 308   }
 309
 310   private async notifyAdminsOfNewInstanceFollow (actorFollow: MActorFollowFull) {
 311     const admins = await UserModel.listWithRight(UserRight.MANAGE_SERVER_FOLLOW)
 312
 313     const follower = Object.assign(actorFollow.ActorFollower.Account, { Actor: actorFollow.ActorFollower })
 314     if (await this.isBlockedByServerOrUser(follower)) return
 315
 316     logger.info('Notifying %d administrators of new instance follower: %s.', admins.length, actorFollow.ActorFollower.url)
 317
 318     function settingGetter (user: MUserWithNotificationSetting) {
 319       return user.NotificationSetting.newInstanceFollower
 320     }
 321
 322     async function notificationCreator (user: MUserWithNotificationSetting) {
 323       const notification = await UserNotificationModel.create<UserNotificationModelForApi>({
 324         type: UserNotificationType.NEW_INSTANCE_FOLLOWER,
 325         userId: user.id,
 326         actorFollowId: actorFollow.id
 327       })
 328       notification.ActorFollow = actorFollow
 329
 330       return notification
 331     }
 332
 333     function emailSender (emails: string[]) {
 334       return Emailer.Instance.addNewInstanceFollowerNotification(emails, actorFollow)
 335     }
 336
 337     return this.notify({ users: admins, settingGetter, notificationCreator, emailSender })
 338   }
 339
 340   private async notifyAdminsOfAutoInstanceFollowing (actorFollow: MActorFollowFull) {
 341     const admins = await UserModel.listWithRight(UserRight.MANAGE_SERVER_FOLLOW)
 342
 343     logger.info('Notifying %d administrators of auto instance following: %s.', admins.length, actorFollow.ActorFollowing.url)
 344
 345     function settingGetter (user: MUserWithNotificationSetting) {
 346       return user.NotificationSetting.autoInstanceFollowing
 347     }
 348
 349     async function notificationCreator (user: MUserWithNotificationSetting) {
 350       const notification = await UserNotificationModel.create<UserNotificationModelForApi>({
 351         type: UserNotificationType.AUTO_INSTANCE_FOLLOWING,
 352         userId: user.id,
 353         actorFollowId: actorFollow.id
 354       })
 355       notification.ActorFollow = actorFollow
 356
 357       return notification
 358     }
 359
 360     function emailSender (emails: string[]) {
 361       return Emailer.Instance.addAutoInstanceFollowingNotification(emails, actorFollow)
 362     }
 363
 364     return this.notify({ users: admins, settingGetter, notificationCreator, emailSender })
 365   }
 366
 367   private async notifyModeratorsOfNewAbuse (parameters: {
 368     abuse: UserAbuse
 369     abuseInstance: MAbuseFull
 370     reporter: string
 371   }) {
 372     const { abuse, abuseInstance } = parameters
 373
 374     const moderators = await UserModel.listWithRight(UserRight.MANAGE_ABUSES)
 375     if (moderators.length === 0) return
 376
 377     const url = this.getAbuseUrl(abuseInstance)
 378
 379     logger.info('Notifying %s user/moderators of new abuse %s.', moderators.length, url)
 380
 381     function settingGetter (user: MUserWithNotificationSetting) {
 382       return user.NotificationSetting.abuseAsModerator
 383     }
 384
 385     async function notificationCreator (user: MUserWithNotificationSetting) {
 386       const notification = await UserNotificationModel.create<UserNotificationModelForApi>({
 387         type: UserNotificationType.NEW_ABUSE_FOR_MODERATORS,
 388         userId: user.id,
 389         abuseId: abuse.id
 390       })
 391       notification.Abuse = abuseInstance
 392
 393       return notification
 394     }
 395
 396     function emailSender (emails: string[]) {
 397       return Emailer.Instance.addAbuseModeratorsNotification(emails, parameters)
 398     }
 399
 400     return this.notify({ users: moderators, settingGetter, notificationCreator, emailSender })
 401   }
 402
 403   private async notifyReporterOfAbuseStateChange (abuse: MAbuseFull) {
 404     // Only notify our users
 405     if (abuse.ReporterAccount.isOwned() !== true) return
 406
 407     const url = this.getAbuseUrl(abuse)
 408
 409     logger.info('Notifying reporter of abuse % of state change.', url)
 410
 411     const reporter = await UserModel.loadByAccountActorId(abuse.ReporterAccount.actorId)
 412
 413     function settingGetter (user: MUserWithNotificationSetting) {
 414       return user.NotificationSetting.abuseStateChange
 415     }
 416
 417     async function notificationCreator (user: MUserWithNotificationSetting) {
 418       const notification = await UserNotificationModel.create<UserNotificationModelForApi>({
 419         type: UserNotificationType.ABUSE_STATE_CHANGE,
 420         userId: user.id,
 421         abuseId: abuse.id
 422       })
 423       notification.Abuse = abuse
 424
 425       return notification
 426     }
 427
 428     function emailSender (emails: string[]) {
 429       return Emailer.Instance.addAbuseStateChangeNotification(emails, abuse)
 430     }
 431
 432     return this.notify({ users: [ reporter ], settingGetter, notificationCreator, emailSender })
 433   }
 434
 435   private async notifyOfNewAbuseMessage (abuse: MAbuseFull, message: MAbuseMessage) {
 436     const url = this.getAbuseUrl(abuse)
 437     logger.info('Notifying reporter and moderators of new abuse message on %s.', url)
 438
 439     const accountMessage = await AccountModel.load(message.accountId)
 440
 441     function settingGetter (user: MUserWithNotificationSetting) {
 442       return user.NotificationSetting.abuseNewMessage
 443     }
 444
 445     async function notificationCreator (user: MUserWithNotificationSetting) {
 446       const notification = await UserNotificationModel.create<UserNotificationModelForApi>({
 447         type: UserNotificationType.ABUSE_NEW_MESSAGE,
 448         userId: user.id,
 449         abuseId: abuse.id
 450       })
 451       notification.Abuse = abuse
 452
 453       return notification
 454     }
 455
 456     function emailSenderReporter (emails: string[]) {
 457       return Emailer.Instance.addAbuseNewMessageNotification(emails, { target: 'reporter', abuse, message, accountMessage })
 458     }
 459
 460     function emailSenderModerators (emails: string[]) {
 461       return Emailer.Instance.addAbuseNewMessageNotification(emails, { target: 'moderator', abuse, message, accountMessage })
 462     }
 463
 464     async function buildReporterOptions () {
 465       // Only notify our users
 466       if (abuse.ReporterAccount.isOwned() !== true) return
 467
 468       const reporter = await UserModel.loadByAccountActorId(abuse.ReporterAccount.actorId)
 469       // Don't notify my own message
 470       if (reporter.Account.id === message.accountId) return
 471
 472       return { users: [ reporter ], settingGetter, notificationCreator, emailSender: emailSenderReporter }
 473     }
 474
 475     async function buildModeratorsOptions () {
 476       let moderators = await UserModel.listWithRight(UserRight.MANAGE_ABUSES)
 477       // Don't notify my own message
 478       moderators = moderators.filter(m => m.Account.id !== message.accountId)
 479
 480       if (moderators.length === 0) return
 481
 482       return { users: moderators, settingGetter, notificationCreator, emailSender: emailSenderModerators }
 483     }
 484
 485     const [ reporterOptions, moderatorsOptions ] = await Promise.all([
 486       buildReporterOptions(),
 487       buildModeratorsOptions()
 488     ])
 489
 490     return Promise.all([
 491       this.notify(reporterOptions),
 492       this.notify(moderatorsOptions)
 493     ])
 494   }
 495
 496   private async notifyModeratorsOfVideoAutoBlacklist (videoBlacklist: MVideoBlacklistLightVideo) {
 497     const moderators = await UserModel.listWithRight(UserRight.MANAGE_VIDEO_BLACKLIST)
 498     if (moderators.length === 0) return
 499
 500     logger.info('Notifying %s moderators of video auto-blacklist %s.', moderators.length, videoBlacklist.Video.url)
 501
 502     function settingGetter (user: MUserWithNotificationSetting) {
 503       return user.NotificationSetting.videoAutoBlacklistAsModerator
 504     }
 505
 506     async function notificationCreator (user: MUserWithNotificationSetting) {
 507       const notification = await UserNotificationModel.create<UserNotificationModelForApi>({
 508         type: UserNotificationType.VIDEO_AUTO_BLACKLIST_FOR_MODERATORS,
 509         userId: user.id,
 510         videoBlacklistId: videoBlacklist.id
 511       })
 512       notification.VideoBlacklist = videoBlacklist
 513
 514       return notification
 515     }
 516
 517     function emailSender (emails: string[]) {
 518       return Emailer.Instance.addVideoAutoBlacklistModeratorsNotification(emails, videoBlacklist)
 519     }
 520
 521     return this.notify({ users: moderators, settingGetter, notificationCreator, emailSender })
 522   }
 523
 524   private async notifyVideoOwnerOfBlacklist (videoBlacklist: MVideoBlacklistVideo) {
 525     const user = await UserModel.loadByVideoId(videoBlacklist.videoId)
 526     if (!user) return
 527
 528     logger.info('Notifying user %s that its video %s has been blacklisted.', user.username, videoBlacklist.Video.url)
 529
 530     function settingGetter (user: MUserWithNotificationSetting) {
 531       return user.NotificationSetting.blacklistOnMyVideo
 532     }
 533
 534     async function notificationCreator (user: MUserWithNotificationSetting) {
 535       const notification = await UserNotificationModel.create<UserNotificationModelForApi>({
 536         type: UserNotificationType.BLACKLIST_ON_MY_VIDEO,
 537         userId: user.id,
 538         videoBlacklistId: videoBlacklist.id
 539       })
 540       notification.VideoBlacklist = videoBlacklist
 541
 542       return notification
 543     }
 544
 545     function emailSender (emails: string[]) {
 546       return Emailer.Instance.addVideoBlacklistNotification(emails, videoBlacklist)
 547     }
 548
 549     return this.notify({ users: [ user ], settingGetter, notificationCreator, emailSender })
 550   }
 551
 552   private async notifyVideoOwnerOfUnblacklist (video: MVideoFullLight) {
 553     const user = await UserModel.loadByVideoId(video.id)
 554     if (!user) return
 555
 556     logger.info('Notifying user %s that its video %s has been unblacklisted.', user.username, video.url)
 557
 558     function settingGetter (user: MUserWithNotificationSetting) {
 559       return user.NotificationSetting.blacklistOnMyVideo
 560     }
 561
 562     async function notificationCreator (user: MUserWithNotificationSetting) {
 563       const notification = await UserNotificationModel.create<UserNotificationModelForApi>({
 564         type: UserNotificationType.UNBLACKLIST_ON_MY_VIDEO,
 565         userId: user.id,
 566         videoId: video.id
 567       })
 568       notification.Video = video
 569
 570       return notification
 571     }
 572
 573     function emailSender (emails: string[]) {
 574       return Emailer.Instance.addVideoUnblacklistNotification(emails, video)
 575     }
 576
 577     return this.notify({ users: [ user ], settingGetter, notificationCreator, emailSender })
 578   }
 579
 580   private async notifyOwnedVideoHasBeenPublished (video: MVideoFullLight) {
 581     const user = await UserModel.loadByVideoId(video.id)
 582     if (!user) return
 583
 584     logger.info('Notifying user %s of the publication of its video %s.', user.username, video.url)
 585
 586     function settingGetter (user: MUserWithNotificationSetting) {
 587       return user.NotificationSetting.myVideoPublished
 588     }
 589
 590     async function notificationCreator (user: MUserWithNotificationSetting) {
 591       const notification = await UserNotificationModel.create<UserNotificationModelForApi>({
 592         type: UserNotificationType.MY_VIDEO_PUBLISHED,
 593         userId: user.id,
 594         videoId: video.id
 595       })
 596       notification.Video = video
 597
 598       return notification
 599     }
 600
 601     function emailSender (emails: string[]) {
 602       return Emailer.Instance.myVideoPublishedNotification(emails, video)
 603     }
 604
 605     return this.notify({ users: [ user ], settingGetter, notificationCreator, emailSender })
 606   }
 607
 608   private async notifyOwnerVideoImportIsFinished (videoImport: MVideoImportVideo, success: boolean) {
 609     const user = await UserModel.loadByVideoImportId(videoImport.id)
 610     if (!user) return
 611
 612     logger.info('Notifying user %s its video import %s is finished.', user.username, videoImport.getTargetIdentifier())
 613
 614     function settingGetter (user: MUserWithNotificationSetting) {
 615       return user.NotificationSetting.myVideoImportFinished
 616     }
 617
 618     async function notificationCreator (user: MUserWithNotificationSetting) {
 619       const notification = await UserNotificationModel.create<UserNotificationModelForApi>({
 620         type: success ? UserNotificationType.MY_VIDEO_IMPORT_SUCCESS : UserNotificationType.MY_VIDEO_IMPORT_ERROR,
 621         userId: user.id,
 622         videoImportId: videoImport.id
 623       })
 624       notification.VideoImport = videoImport
 625
 626       return notification
 627     }
 628
 629     function emailSender (emails: string[]) {
 630       return success
 631         ? Emailer.Instance.myVideoImportSuccessNotification(emails, videoImport)
 632         : Emailer.Instance.myVideoImportErrorNotification(emails, videoImport)
 633     }
 634
 635     return this.notify({ users: [ user ], settingGetter, notificationCreator, emailSender })
 636   }
 637
 638   private async notifyModeratorsOfNewUserRegistration (registeredUser: MUserDefault) {
 639     const moderators = await UserModel.listWithRight(UserRight.MANAGE_USERS)
 640     if (moderators.length === 0) return
 641
 642     logger.info(
 643       'Notifying %s moderators of new user registration of %s.',
 644       moderators.length, registeredUser.username
 645     )
 646
 647     function settingGetter (user: MUserWithNotificationSetting) {
 648       return user.NotificationSetting.newUserRegistration
 649     }
 650
 651     async function notificationCreator (user: MUserWithNotificationSetting) {
 652       const notification = await UserNotificationModel.create<UserNotificationModelForApi>({
 653         type: UserNotificationType.NEW_USER_REGISTRATION,
 654         userId: user.id,
 655         accountId: registeredUser.Account.id
 656       })
 657       notification.Account = registeredUser.Account
 658
 659       return notification
 660     }
 661
 662     function emailSender (emails: string[]) {
 663       return Emailer.Instance.addNewUserRegistrationNotification(emails, registeredUser)
 664     }
 665
 666     return this.notify({ users: moderators, settingGetter, notificationCreator, emailSender })
 667   }
 668
 669   private async notify<T extends MUserWithNotificationSetting> (options: {
 670     users: T[]
 671     notificationCreator: (user: T) => Promise<UserNotificationModelForApi>
 672     emailSender: (emails: string[]) => void
 673     settingGetter: (user: T) => UserNotificationSettingValue
 674   }) {
 675     const emails: string[] = []
 676
 677     for (const user of options.users) {
 678       if (this.isWebNotificationEnabled(options.settingGetter(user))) {
 679         const notification = await options.notificationCreator(user)
 680
 681         PeerTubeSocket.Instance.sendNotification(user.id, notification)
 682       }
 683
 684       if (this.isEmailEnabled(user, options.settingGetter(user))) {
 685         emails.push(user.email)
 686       }
 687     }
 688
 689     if (emails.length !== 0) {
 690       options.emailSender(emails)
 691     }
 692   }
 693
 694   private isEmailEnabled (user: MUser, value: UserNotificationSettingValue) {
 695     if (CONFIG.SIGNUP.REQUIRES_EMAIL_VERIFICATION === true && user.emailVerified === false) return false
 696
 697     return value & UserNotificationSettingValue.EMAIL
 698   }
 699
 700   private isWebNotificationEnabled (value: UserNotificationSettingValue) {
 701     return value & UserNotificationSettingValue.WEB
 702   }
 703
 704   private isBlockedByServerOrUser (targetAccount: MAccountServer, user?: MUserAccount) {
 705     return isBlockedByServerOrAccount(targetAccount, user?.Account)
 706   }
 707
 708   private getAbuseUrl (abuse: MAbuseFull) {
 709     return abuse.VideoAbuse?.Video?.url ||
 710       abuse.VideoCommentAbuse?.VideoComment?.url ||
 711       abuse.FlaggedAccount.Actor.url
 712   }
 713
 714   static get Instance () {
 715     return this.instance || (this.instance = new this())
 716   }
 717 }
 718
 719 // ---------------------------------------------------------------------------
 720
 721 export {
 722   Notifier
 723 }