server/lib/notifier.ts

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