about summary refs log tree commit diff
path: root/lib/tasks/mastodon.rake
blob: 0b011bf57fd6ae55d8413e8afa5d481a51c62b3d (plain) (blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
# frozen_string_literal: true

require 'optparse'
require 'colorize'

namespace :mastodon do
  desc 'Configure the instance for production use'
  task :setup do
    prompt = TTY::Prompt.new
    env    = {}

    begin
      prompt.say('Your instance is identified by its domain name. Changing it afterward will break things.')
      env['LOCAL_DOMAIN'] = prompt.ask('Domain name:') do |q|
        q.required true
        q.modify :strip
        q.validate(/\A[a-z0-9\.\-]+\z/i)
        q.messages[:valid?] = 'Invalid domain. If you intend to use unicode characters, enter punycode here'
      end

      prompt.say "\n"

      prompt.say('Single user mode disables registrations and redirects the landing page to your public profile.')
      env['SINGLE_USER_MODE'] = prompt.yes?('Do you want to enable single user mode?', default: false)

      %w(SECRET_KEY_BASE OTP_SECRET).each do |key|
        env[key] = SecureRandom.hex(64)
      end

      vapid_key = Webpush.generate_key

      env['VAPID_PRIVATE_KEY'] = vapid_key.private_key
      env['VAPID_PUBLIC_KEY']  = vapid_key.public_key

      prompt.say "\n"

      using_docker        = prompt.yes?('Are you using Docker to run Mastodon?')
      db_connection_works = false

      prompt.say "\n"

      loop do
        env['DB_HOST'] = prompt.ask('PostgreSQL host:') do |q|
          q.required true
          q.default using_docker ? 'db' : '/var/run/postgresql'
          q.modify :strip
        end

        env['DB_PORT'] = prompt.ask('PostgreSQL port:') do |q|
          q.required true
          q.default 5432
          q.convert :int
        end

        env['DB_NAME'] = prompt.ask('Name of PostgreSQL database:') do |q|
          q.required true
          q.default using_docker ? 'postgres' : 'mastodon_production'
          q.modify :strip
        end

        env['DB_USER'] = prompt.ask('Name of PostgreSQL user:') do |q|
          q.required true
          q.default using_docker ? 'postgres' : 'mastodon'
          q.modify :strip
        end

        env['DB_PASS'] = prompt.ask('Password of PostgreSQL user:') do |q|
          q.echo false
        end

        # The chosen database may not exist yet. Connect to default database
        # to avoid "database does not exist" error.
        db_options = {
          adapter: :postgresql,
          database: 'postgres',
          host: env['DB_HOST'],
          port: env['DB_PORT'],
          user: env['DB_USER'],
          password: env['DB_PASS'],
        }

        begin
          ActiveRecord::Base.establish_connection(db_options)
          ActiveRecord::Base.connection
          prompt.ok 'Database configuration works! 🎆'
          db_connection_works = true
          break
        rescue StandardError => e
          prompt.error 'Database connection could not be established with this configuration, try again.'
          prompt.error e.message
          break unless prompt.yes?('Try again?')
        end
      end

      prompt.say "\n"

      loop do
        env['REDIS_HOST'] = prompt.ask('Redis host:') do |q|
          q.required true
          q.default using_docker ? 'redis' : 'localhost'
          q.modify :strip
        end

        env['REDIS_PORT'] = prompt.ask('Redis port:') do |q|
          q.required true
          q.default 6379
          q.convert :int
        end

        redis_options = {
          host: env['REDIS_HOST'],
          port: env['REDIS_PORT'],
          driver: :hiredis,
        }

        begin
          redis = Redis.new(redis_options)
          redis.ping
          prompt.ok 'Redis configuration works! 🎆'
          break
        rescue StandardError => e
          prompt.error 'Redis connection could not be established with this configuration, try again.'
          prompt.error e.message
          break unless prompt.yes?('Try again?')
        end
      end

      prompt.say "\n"

      if prompt.yes?('Do you want to store uploaded files on the cloud?', default: false)
        case prompt.select('Provider', ['Amazon S3', 'Wasabi', 'Minio'])
        when 'Amazon S3'
          env['S3_ENABLED']  = 'true'
          env['S3_PROTOCOL'] = 'https'

          env['S3_BUCKET'] = prompt.ask('S3 bucket name:') do |q|
            q.required true
            q.default "files.#{env['LOCAL_DOMAIN']}"
            q.modify :strip
          end

          env['S3_REGION'] = prompt.ask('S3 region:') do |q|
            q.required true
            q.default 'us-east-1'
            q.modify :strip
          end

          env['S3_HOSTNAME'] = prompt.ask('S3 hostname:') do |q|
            q.required true
            q.default 's3-us-east-1.amazonaws.com'
            q.modify :strip
          end

          env['AWS_ACCESS_KEY_ID'] = prompt.ask('S3 access key:') do |q|
            q.required true
            q.modify :strip
          end

          env['AWS_SECRET_ACCESS_KEY'] = prompt.ask('S3 secret key:') do |q|
            q.required true
            q.modify :strip
          end
        when 'Wasabi'
          env['S3_ENABLED']  = 'true'
          env['S3_PROTOCOL'] = 'https'
          env['S3_REGION']   = 'us-east-1'
          env['S3_HOSTNAME'] = 's3.wasabisys.com'
          env['S3_ENDPOINT'] = 'https://s3.wasabisys.com/'

          env['S3_BUCKET'] = prompt.ask('Wasabi bucket name:') do |q|
            q.required true
            q.default "files.#{env['LOCAL_DOMAIN']}"
            q.modify :strip
          end

          env['AWS_ACCESS_KEY_ID'] = prompt.ask('Wasabi access key:') do |q|
            q.required true
            q.modify :strip
          end

          env['AWS_SECRET_ACCESS_KEY'] = prompt.ask('Wasabi secret key:') do |q|
            q.required true
            q.modify :strip
          end
        when 'Minio'
          env['S3_ENABLED']  = 'true'
          env['S3_PROTOCOL'] = 'https'
          env['S3_REGION']   = 'us-east-1'

          env['S3_ENDPOINT'] = prompt.ask('Minio endpoint URL:') do |q|
            q.required true
            q.modify :strip
          end

          env['S3_PROTOCOL'] = env['S3_ENDPOINT'].start_with?('https') ? 'https' : 'http'
          env['S3_HOSTNAME'] = env['S3_ENDPOINT'].gsub(/\Ahttps?:\/\//, '')

          env['S3_BUCKET'] = prompt.ask('Minio bucket name:') do |q|
            q.required true
            q.default "files.#{env['LOCAL_DOMAIN']}"
            q.modify :strip
          end

          env['AWS_ACCESS_KEY_ID'] = prompt.ask('Minio access key:') do |q|
            q.required true
            q.modify :strip
          end

          env['AWS_SECRET_ACCESS_KEY'] = prompt.ask('Minio secret key:') do |q|
            q.required true
            q.modify :strip
          end
        end

        if prompt.yes?('Do you want to access the uploaded files from your own domain?')
          env['S3_CLOUDFRONT_HOST'] = prompt.ask('Domain for uploaded files:') do |q|
            q.required true
            q.default "files.#{env['LOCAL_DOMAIN']}"
            q.modify :strip
          end
        end
      end

      prompt.say "\n"

      loop do
        env['SMTP_SERVER'] = prompt.ask('SMTP server:') do |q|
          q.required true
          q.default 'smtp.mailgun.org'
          q.modify :strip
        end

        env['SMTP_PORT'] = prompt.ask('SMTP port:') do |q|
          q.required true
          q.default 587
          q.convert :int
        end

        env['SMTP_LOGIN'] = prompt.ask('SMTP username:') do |q|
          q.modify :strip
        end

        env['SMTP_PASSWORD'] = prompt.ask('SMTP password:') do |q|
          q.echo false
        end

        env['SMTP_FROM_ADDRESS'] = prompt.ask('E-mail address to send e-mails "from":') do |q|
          q.required true
          q.default "Mastodon <notifications@#{env['LOCAL_DOMAIN']}>"
          q.modify :strip
        end

        break unless prompt.yes?('Send a test e-mail with this configuration right now?')

        send_to = prompt.ask('Send test e-mail to:', required: true)

        begin
          ActionMailer::Base.smtp_settings = {
            :port                 => env['SMTP_PORT'],
            :address              => env['SMTP_SERVER'],
            :user_name            => env['SMTP_LOGIN'].presence,
            :password             => env['SMTP_PASSWORD'].presence,
            :domain               => env['LOCAL_DOMAIN'],
            :authentication       => :plain,
            :enable_starttls_auto => true,
          }

          ActionMailer::Base.default_options = {
            from: env['SMTP_FROM_ADDRESS'],
          }

          mail = ActionMailer::Base.new.mail to: send_to, subject: 'Test', body: 'Mastodon SMTP configuration works!'
          mail.deliver
        rescue StandardError => e
          prompt.error 'E-mail could not be sent with this configuration, try again.'
          prompt.error e.message
          break unless prompt.yes?('Try again?')
        end
      end

      prompt.say "\n"
      prompt.say 'This configuration will be written to .env.production'

      if prompt.yes?('Save configuration?')
        cmd = TTY::Command.new(printer: :quiet)

        File.write(Rails.root.join('.env.production'), "# Generated with mastodon:setup on #{Time.now.utc}\n\n" + env.each_pair.map { |key, value| "#{key}=#{value}" }.join("\n") + "\n")

        prompt.say "\n"
        prompt.say 'Now that configuration is saved, the database schema must be loaded.'
        prompt.warn 'If the database already exists, this will erase its contents.'

        if prompt.yes?('Prepare the database now?')
          prompt.say 'Running `RAILS_ENV=production rails db:setup` ...'
          prompt.say "\n"

          if cmd.run!({ RAILS_ENV: 'production' }, :rails, 'db:setup').failure?
            prompt.say "\n"
            prompt.error 'That failed! Perhaps your configuration is not right'
          else
            prompt.say "\n"
            prompt.ok 'Done!'
          end
        end

        prompt.say "\n"
        prompt.say 'The final step is compiling CSS/JS assets.'
        prompt.say 'This may take a while and consume a lot of RAM.'

        if prompt.yes?('Compile the assets now?')
          prompt.say 'Running `RAILS_ENV=production rails assets:precompile` ...'
          prompt.say "\n"

          if cmd.run!({ RAILS_ENV: 'production' }, :rails, 'assets:precompile').failure?
            prompt.say "\n"
            prompt.error 'That failed! Maybe you need swap space?'
          else
            prompt.say "\n"
            prompt.say 'Done!'
          end
        end

        prompt.say "\n"
        prompt.ok 'All done! You can now power on the Mastodon server 🐘'
        prompt.say "\n"

        if db_connection_works && prompt.yes?('Do you want to create an admin user straight away?')
          env.each_pair do |key, value|
            ENV[key] = value.to_s
          end

          require_relative '../../config/environment'
          disable_log_stdout!

          username = prompt.ask('Username:') do |q|
            q.required true
            q.default 'admin'
            q.validate(/\A[a-z0-9_]+\z/i)
            q.modify :strip
          end

          email = prompt.ask('E-mail:') do |q|
            q.required true
            q.modify :strip
          end

          password = SecureRandom.hex(16)

          user = User.new(admin: true, email: email, password: password, confirmed_at: Time.now.utc, account_attributes: { username: username })
          user.save(validate: false)

          prompt.ok "You can login with the password: #{password}"
          prompt.warn 'You can change your password once you login.'
        end
      else
        prompt.warn 'Nothing saved. Bye!'
      end
    rescue TTY::Reader::InputInterrupt
      prompt.ok 'Aborting. Bye!'
    end
  end

  desc 'Execute daily tasks (deprecated)'
  task :daily do
    # No-op
    # All of these tasks are now executed via sidekiq-scheduler
  end

  desc 'Turn a user into an admin, identified by the USERNAME environment variable'
  task make_admin: :environment do
    include RoutingHelper

    account_username = ENV.fetch('USERNAME')
    user             = User.joins(:account).where(accounts: { username: account_username })

    if user.present?
      user.update(admin: true)
      puts "Congrats! #{account_username} is now an admin. \\o/\nNavigate to #{edit_admin_settings_url} to get started"
    else
      puts "User could not be found; please make sure an account with the `#{account_username}` username exists."
    end
  end

  desc 'Turn a user into a moderator, identified by the USERNAME environment variable'
  task make_mod: :environment do
    account_username = ENV.fetch('USERNAME')
    user             = User.joins(:account).where(accounts: { username: account_username })

    if user.present?
      user.update(moderator: true)
      puts "Congrats! #{account_username} is now a moderator \\o/"
    else
      puts "User could not be found; please make sure an account with the `#{account_username}` username exists."
    end
  end

  desc 'Remove admin and moderator privileges from user identified by the USERNAME environment variable'
  task revoke_staff: :environment do
    account_username = ENV.fetch('USERNAME')
    user             = User.joins(:account).where(accounts: { username: account_username })

    if user.present?
      user.update(moderator: false, admin: false)
      puts "#{account_username} is no longer admin or moderator."
    else
      puts "User could not be found; please make sure an account with the `#{account_username}` username exists."
    end
  end

  desc 'Manually confirms a user with associated user email address stored in USER_EMAIL environment variable.'
  task confirm_email: :environment do
    email = ENV.fetch('USER_EMAIL')
    user  = User.find_by(email: email)

    if user
      user.update(confirmed_at: Time.now.utc)
      puts "#{email} confirmed"
    else
      abort "#{email} not found"
    end
  end

  desc 'Add a user by providing their email, username and initial password.' \
       'The user will receive a confirmation email, then they must reset their password before logging in.'
  task add_user: :environment do
    disable_log_stdout!

    prompt = TTY::Prompt.new

    begin
      email = prompt.ask('E-mail:', required: true) do |q|
        q.modify :strip
      end

      username = prompt.ask('Username:', required: true) do |q|
        q.modify :strip
      end

      role = prompt.select('Role:', %w(user moderator admin))

      if prompt.yes?('Proceed to create the user?')
        user = User.new(email: email, password: SecureRandom.hex, admin: role == 'admin', moderator: role == 'moderator', account_attributes: { username: username })

        if user.save
          prompt.ok 'User created and confirmation mail sent to the user\'s email address.'
          prompt.ok "Here is the random password generated for the user: #{password}"
        else
          prompt.warn 'User was not created because of the following errors:'

          user.errors.each do |key, val|
            prompt.error "#{key}: #{val}"
          end
        end
      else
        prompt.ok 'Aborting. Bye!'
      end
    rescue TTY::Reader::InputInterrupt
      prompt.ok 'Aborting. Bye!'
    end
  end

  namespace :media do
    desc 'Removes media attachments that have not been assigned to any status for longer than a day (deprecated)'
    task clear: :environment do
      # No-op
      # This task is now executed via sidekiq-scheduler
    end

    desc 'Remove media attachments attributed to silenced accounts'
    task remove_silenced: :environment do
      MediaAttachment.where(account: Account.silenced).find_each(&:destroy)
    end

    desc 'Remove cached remote media attachments that are older than NUM_DAYS. By default 7 (week)'
    task remove_remote: :environment do
      time_ago = ENV.fetch('NUM_DAYS') { 7 }.to_i.days.ago

      MediaAttachment.where.not(remote_url: '').where.not(file_file_name: nil).where('created_at < ?', time_ago).find_each do |media|
        next unless media.file.exists?

        media.file.destroy
        media.save
      end
    end

    desc 'Set unknown attachment type for remote-only attachments'
    task set_unknown: :environment do
      puts 'Setting unknown attachment type for remote-only attachments...'
      MediaAttachment.where(file_file_name: nil).where.not(type: :unknown).in_batches.update_all(type: :unknown)
      puts 'Done!'
    end

    desc 'Redownload avatars/headers of remote users. Optionally limit to a particular domain with DOMAIN'
    task redownload_avatars: :environment do
      accounts = Account.remote
      accounts = accounts.where(domain: ENV['DOMAIN']) if ENV['DOMAIN'].present?

      accounts.find_each do |account|
        begin
          account.reset_avatar!
          account.reset_header!
          account.save
        rescue Paperclip::Error
          puts "Error resetting avatar and header for account #{username}@#{domain}"
        end
      end
    end
  end

  namespace :push do
    desc 'Unsubscribes from PuSH updates of feeds nobody follows locally'
    task clear: :environment do
      Pubsubhubbub::UnsubscribeWorker.push_bulk(Account.remote.without_followers.where.not(subscription_expires_at: nil).pluck(:id))
    end

    desc 'Re-subscribes to soon expiring PuSH subscriptions (deprecated)'
    task refresh: :environment do
      # No-op
      # This task is now executed via sidekiq-scheduler
    end
  end

  namespace :feeds do
    desc 'Clear timelines of inactive users (deprecated)'
    task clear: :environment do
      # No-op
      # This task is now executed via sidekiq-scheduler
    end

    desc 'Clear all timelines without regenerating them'
    task clear_all: :environment do
      Redis.current.keys('feed:*').each { |key| Redis.current.del(key) }
    end

    desc 'Generates home timelines for users who logged in in the past two weeks'
    task build: :environment do
      User.active.includes(:account).find_each do |u|
        PrecomputeFeedService.new.call(u.account)
      end
    end
  end

  namespace :emails do
    desc 'Send out digest e-mails (deprecated)'
    task digest: :environment do
      # No-op
      # This task is now executed via sidekiq-scheduler
    end
  end

  namespace :users do
    desc 'Clear out unconfirmed users (deprecated)'
    task clear: :environment do
      # No-op
      # This task is now executed via sidekiq-scheduler
    end

    desc 'List e-mails of all admin users'
    task admins: :environment do
      puts 'Admin user emails:'
      puts User.admins.map(&:email).join("\n")
    end
  end

  namespace :settings do
    desc 'Open registrations on this instance'
    task open_registrations: :environment do
      Setting.open_registrations = true
    end

    desc 'Close registrations on this instance'
    task close_registrations: :environment do
      Setting.open_registrations = false
    end
  end

  namespace :webpush do
    desc 'Generate VAPID key'
    task generate_vapid_key: :environment do
      vapid_key = Webpush.generate_key
      puts "VAPID_PRIVATE_KEY=#{vapid_key.private_key}"
      puts "VAPID_PUBLIC_KEY=#{vapid_key.public_key}"
    end
  end

  namespace :maintenance do
    desc 'Update counter caches'
    task update_counter_caches: :environment do
      puts 'Updating counter caches for accounts...'

      Account.unscoped.where.not(protocol: :activitypub).select('id').find_in_batches do |batch|
        Account.where(id: batch.map(&:id)).update_all('statuses_count = (select count(*) from statuses where account_id = accounts.id), followers_count = (select count(*) from follows where target_account_id = accounts.id), following_count = (select count(*) from follows where account_id = accounts.id)')
      end

      puts 'Updating counter caches for statuses...'

      Status.unscoped.select('id').find_in_batches do |batch|
        Status.where(id: batch.map(&:id)).update_all('favourites_count = (select count(*) from favourites where favourites.status_id = statuses.id), reblogs_count = (select count(*) from statuses as reblogs where reblogs.reblog_of_id = statuses.id)')
      end

      puts 'Done!'
    end

    desc 'Generate static versions of GIF avatars/headers'
    task add_static_avatars: :environment do
      puts 'Generating static avatars/headers for GIF ones...'

      Account.unscoped.where(avatar_content_type: 'image/gif').or(Account.unscoped.where(header_content_type: 'image/gif')).find_each do |account|
        begin
          account.avatar.reprocess! if account.avatar_content_type == 'image/gif' && !account.avatar.exists?(:static)
          account.header.reprocess! if account.header_content_type == 'image/gif' && !account.header.exists?(:static)
        rescue StandardError => e
          Rails.logger.error "Error while generating static avatars/headers for account #{account.id}: #{e}"
          next
        end
      end

      puts 'Done!'
    end

    desc 'Ensure referencial integrity'
    task prepare_for_foreign_keys: :environment do
      # All the deletes:
      ActiveRecord::Base.connection.execute('DELETE FROM statuses USING statuses s LEFT JOIN accounts a ON a.id = s.account_id WHERE statuses.id = s.id AND a.id IS NULL')

      if ActiveRecord::Base.connection.table_exists? :account_domain_blocks
        ActiveRecord::Base.connection.execute('DELETE FROM account_domain_blocks USING account_domain_blocks adb LEFT JOIN accounts a ON a.id = adb.account_id WHERE account_domain_blocks.id = adb.id AND a.id IS NULL')
      end

      if ActiveRecord::Base.connection.table_exists? :conversation_mutes
        ActiveRecord::Base.connection.execute('DELETE FROM conversation_mutes USING conversation_mutes cm LEFT JOIN accounts a ON a.id = cm.account_id WHERE conversation_mutes.id = cm.id AND a.id IS NULL')
        ActiveRecord::Base.connection.execute('DELETE FROM conversation_mutes USING conversation_mutes cm LEFT JOIN conversations c ON c.id = cm.conversation_id WHERE conversation_mutes.id = cm.id AND c.id IS NULL')
      end

      ActiveRecord::Base.connection.execute('DELETE FROM favourites USING favourites f LEFT JOIN accounts a ON a.id = f.account_id WHERE favourites.id = f.id AND a.id IS NULL')
      ActiveRecord::Base.connection.execute('DELETE FROM favourites USING favourites f LEFT JOIN statuses s ON s.id = f.status_id WHERE favourites.id = f.id AND s.id IS NULL')
      ActiveRecord::Base.connection.execute('DELETE FROM blocks USING blocks b LEFT JOIN accounts a ON a.id = b.account_id WHERE blocks.id = b.id AND a.id IS NULL')
      ActiveRecord::Base.connection.execute('DELETE FROM blocks USING blocks b LEFT JOIN accounts a ON a.id = b.target_account_id WHERE blocks.id = b.id AND a.id IS NULL')
      ActiveRecord::Base.connection.execute('DELETE FROM follow_requests USING follow_requests fr LEFT JOIN accounts a ON a.id = fr.account_id WHERE follow_requests.id = fr.id AND a.id IS NULL')
      ActiveRecord::Base.connection.execute('DELETE FROM follow_requests USING follow_requests fr LEFT JOIN accounts a ON a.id = fr.target_account_id WHERE follow_requests.id = fr.id AND a.id IS NULL')
      ActiveRecord::Base.connection.execute('DELETE FROM follows USING follows f LEFT JOIN accounts a ON a.id = f.account_id WHERE follows.id = f.id AND a.id IS NULL')
      ActiveRecord::Base.connection.execute('DELETE FROM follows USING follows f LEFT JOIN accounts a ON a.id = f.target_account_id WHERE follows.id = f.id AND a.id IS NULL')
      ActiveRecord::Base.connection.execute('DELETE FROM mutes USING mutes m LEFT JOIN accounts a ON a.id = m.account_id WHERE mutes.id = m.id AND a.id IS NULL')
      ActiveRecord::Base.connection.execute('DELETE FROM mutes USING mutes m LEFT JOIN accounts a ON a.id = m.target_account_id WHERE mutes.id = m.id AND a.id IS NULL')
      ActiveRecord::Base.connection.execute('DELETE FROM imports USING imports i LEFT JOIN accounts a ON a.id = i.account_id WHERE imports.id = i.id AND a.id IS NULL')
      ActiveRecord::Base.connection.execute('DELETE FROM mentions USING mentions m LEFT JOIN accounts a ON a.id = m.account_id WHERE mentions.id = m.id AND a.id IS NULL')
      ActiveRecord::Base.connection.execute('DELETE FROM mentions USING mentions m LEFT JOIN statuses s ON s.id = m.status_id WHERE mentions.id = m.id AND s.id IS NULL')
      ActiveRecord::Base.connection.execute('DELETE FROM notifications USING notifications n LEFT JOIN accounts a ON a.id = n.account_id WHERE notifications.id = n.id AND a.id IS NULL')
      ActiveRecord::Base.connection.execute('DELETE FROM notifications USING notifications n LEFT JOIN accounts a ON a.id = n.from_account_id WHERE notifications.id = n.id AND a.id IS NULL')
      ActiveRecord::Base.connection.execute('DELETE FROM preview_cards USING preview_cards pc LEFT JOIN statuses s ON s.id = pc.status_id WHERE preview_cards.id = pc.id AND s.id IS NULL')
      ActiveRecord::Base.connection.execute('DELETE FROM reports USING reports r LEFT JOIN accounts a ON a.id = r.account_id WHERE reports.id = r.id AND a.id IS NULL')
      ActiveRecord::Base.connection.execute('DELETE FROM reports USING reports r LEFT JOIN accounts a ON a.id = r.target_account_id WHERE reports.id = r.id AND a.id IS NULL')
      ActiveRecord::Base.connection.execute('DELETE FROM statuses_tags USING statuses_tags st LEFT JOIN statuses s ON s.id = st.status_id WHERE statuses_tags.tag_id = st.tag_id AND statuses_tags.status_id = st.status_id AND s.id IS NULL')
      ActiveRecord::Base.connection.execute('DELETE FROM statuses_tags USING statuses_tags st LEFT JOIN tags t ON t.id = st.tag_id WHERE statuses_tags.tag_id = st.tag_id AND statuses_tags.status_id = st.status_id AND t.id IS NULL')
      ActiveRecord::Base.connection.execute('DELETE FROM stream_entries USING stream_entries se LEFT JOIN accounts a ON a.id = se.account_id WHERE stream_entries.id = se.id AND a.id IS NULL')
      ActiveRecord::Base.connection.execute('DELETE FROM subscriptions USING subscriptions s LEFT JOIN accounts a ON a.id = s.account_id WHERE subscriptions.id = s.id AND a.id IS NULL')
      ActiveRecord::Base.connection.execute('DELETE FROM users USING users u LEFT JOIN accounts a ON a.id = u.account_id WHERE users.id = u.id AND a.id IS NULL')
      ActiveRecord::Base.connection.execute('DELETE FROM web_settings USING web_settings ws LEFT JOIN users u ON u.id = ws.user_id WHERE web_settings.id = ws.id AND u.id IS NULL')
      ActiveRecord::Base.connection.execute('DELETE FROM oauth_access_grants USING oauth_access_grants oag LEFT JOIN users u ON u.id = oag.resource_owner_id WHERE oauth_access_grants.id = oag.id AND oag.resource_owner_id IS NOT NULL AND u.id IS NULL')
      ActiveRecord::Base.connection.execute('DELETE FROM oauth_access_grants USING oauth_access_grants oag LEFT JOIN oauth_applications a ON a.id = oag.application_id WHERE oauth_access_grants.id = oag.id AND oag.application_id IS NOT NULL AND a.id IS NULL')
      ActiveRecord::Base.connection.execute('DELETE FROM oauth_access_tokens USING oauth_access_tokens oat LEFT JOIN users u ON u.id = oat.resource_owner_id WHERE oauth_access_tokens.id = oat.id AND oat.resource_owner_id IS NOT NULL AND u.id IS NULL')
      ActiveRecord::Base.connection.execute('DELETE FROM oauth_access_tokens USING oauth_access_tokens oat LEFT JOIN oauth_applications a ON a.id = oat.application_id WHERE oauth_access_tokens.id = oat.id AND oat.application_id IS NOT NULL AND a.id IS NULL')

      # All the nullifies:
      ActiveRecord::Base.connection.execute('UPDATE statuses SET in_reply_to_id = NULL FROM statuses s LEFT JOIN statuses rs ON rs.id = s.in_reply_to_id WHERE statuses.id = s.id AND s.in_reply_to_id IS NOT NULL AND rs.id IS NULL')
      ActiveRecord::Base.connection.execute('UPDATE statuses SET in_reply_to_account_id = NULL FROM statuses s LEFT JOIN accounts a ON a.id = s.in_reply_to_account_id WHERE statuses.id = s.id AND s.in_reply_to_account_id IS NOT NULL AND a.id IS NULL')
      ActiveRecord::Base.connection.execute('UPDATE media_attachments SET status_id = NULL FROM media_attachments ma LEFT JOIN statuses s ON s.id = ma.status_id WHERE media_attachments.id = ma.id AND ma.status_id IS NOT NULL AND s.id IS NULL')
      ActiveRecord::Base.connection.execute('UPDATE media_attachments SET account_id = NULL FROM media_attachments ma LEFT JOIN accounts a ON a.id = ma.account_id WHERE media_attachments.id = ma.id AND ma.account_id IS NOT NULL AND a.id IS NULL')
      ActiveRecord::Base.connection.execute('UPDATE reports SET action_taken_by_account_id = NULL FROM reports r LEFT JOIN accounts a ON a.id = r.action_taken_by_account_id WHERE reports.id = r.id AND r.action_taken_by_account_id IS NOT NULL AND a.id IS NULL')
    end

    desc 'Remove deprecated preview cards'
    task remove_deprecated_preview_cards: :environment do
      next unless ActiveRecord::Base.connection.table_exists? 'deprecated_preview_cards'

      class DeprecatedPreviewCard < ActiveRecord::Base
        self.inheritance_column = false

        path = '/preview_cards/:attachment/:id_partition/:style/:filename'
        if ENV['S3_ENABLED'] != 'true'
          path = (ENV['PAPERCLIP_ROOT_PATH'] || ':rails_root/public/system') + path
        end

        has_attached_file :image, styles: { original: '280x120>' }, convert_options: { all: '-quality 80 -strip' }, path: path
      end

      puts 'Delete records and associated files from deprecated preview cards? [y/N]: '
      confirm = STDIN.gets.chomp

      if confirm.casecmp('y').zero?
        DeprecatedPreviewCard.in_batches.destroy_all

        puts 'Drop deprecated preview cards table? [y/N]: '
        confirm = STDIN.gets.chomp

        if confirm.casecmp('y').zero?
          ActiveRecord::Migration.drop_table :deprecated_preview_cards
        end
      end
    end

    desc 'Migrate photo preview cards made before 2.1'
    task migrate_photo_preview_cards: :environment do
      status_ids = Status.joins(:preview_cards)
                         .where(preview_cards: { embed_url: '', type: :photo })
                         .reorder(nil)
                         .group(:id)
                         .pluck(:id)

      PreviewCard.where(embed_url: '', type: :photo).delete_all
      LinkCrawlWorker.push_bulk status_ids
    end

    desc 'Remove all home feed regeneration markers'
    task remove_regeneration_markers: :environment do
      keys = Redis.current.keys('account:*:regeneration')

      Redis.current.pipelined do
        keys.each { |key| Redis.current.del(key) }
      end
    end

    desc 'Check every known remote account and delete those that no longer exist in origin'
    task purge_removed_accounts: :environment do
      prepare_for_options!

      options = {}

      OptionParser.new do |opts|
        opts.banner = 'Usage: rails mastodon:maintenance:purge_removed_accounts [options]'

        opts.on('-f', '--force', 'Remove all encountered accounts without asking for confirmation') do
          options[:force] = true
        end

        opts.on('-h', '--help', 'Display this message') do
          puts opts
          exit
        end
      end.parse!

      disable_log_stdout!

      total        = Account.remote.where(protocol: :activitypub).count
      progress_bar = ProgressBar.create(total: total, format: '%c/%C |%w>%i| %e')

      Account.remote.where(protocol: :activitypub).partitioned.find_each do |account|
        progress_bar.increment

        begin
          res = Request.new(:head, account.uri).perform
        rescue StandardError
          # This could happen due to network timeout, DNS timeout, wrong SSL cert, etc,
          # which should probably not lead to perceiving the account as deleted, so
          # just skip till next time
          next
        end

        if [404, 410].include?(res.code)
          if options[:force]
            SuspendAccountService.new.call(account)
            account.destroy
          else
            progress_bar.pause
            progress_bar.clear
            print "\nIt seems like #{account.acct} no longer exists. Purge the account from the database? [Y/n]: ".colorize(:yellow)
            confirm = STDIN.gets.chomp
            puts ''
            progress_bar.resume

            if confirm.casecmp('n').zero?
              next
            else
              SuspendAccountService.new.call(account)
              account.destroy
            end
          end
        end
      end
    end
  end
end

def disable_log_stdout!
  dev_null = Logger.new('/dev/null')

  Rails.logger                 = dev_null
  ActiveRecord::Base.logger    = dev_null
  HttpLog.configuration.logger = dev_null
  Paperclip.options[:log]      = false
end

def prepare_for_options!
  2.times { ARGV.shift }
end