about summary refs log tree commit diff
path: root/app/models/status.rb
blob: 731bb6eeeb01d5f1b83ad9a81cf143feb333e048 (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
# frozen_string_literal: true
# == Schema Information
#
# Table name: statuses
#
#  id                     :bigint(8)        not null, primary key
#  uri                    :string
#  text                   :text             default(""), not null
#  created_at             :datetime         not null
#  updated_at             :datetime         not null
#  in_reply_to_id         :bigint(8)
#  reblog_of_id           :bigint(8)
#  url                    :string
#  sensitive              :boolean          default(FALSE), not null
#  visibility             :integer          default("public"), not null
#  spoiler_text           :text             default(""), not null
#  reply                  :boolean          default(FALSE), not null
#  language               :string
#  conversation_id        :bigint(8)
#  local                  :boolean
#  account_id             :bigint(8)        not null
#  application_id         :bigint(8)
#  in_reply_to_account_id :bigint(8)
#  local_only             :boolean
#  poll_id                :bigint(8)
#  content_type           :string
#  deleted_at             :datetime
#  edited                 :integer          default(0), not null
#

class Status < ApplicationRecord
  before_destroy :unlink_from_conversations

  include Discard::Model
  include Paginable
  include Cacheable
  include StatusThreadingConcern
  include RateLimitable

  rate_limit by: :account, family: :statuses

  self.discard_column = :deleted_at

  # If `override_timestamps` is set at creation time, Snowflake ID creation
  # will be based on current time instead of `created_at`
  attr_accessor :override_timestamps

  update_index('statuses#status', :proper)

  enum visibility: [:public, :unlisted, :private, :direct, :limited], _suffix: :visibility

  belongs_to :application, class_name: 'Doorkeeper::Application', optional: true

  belongs_to :account, inverse_of: :statuses
  belongs_to :in_reply_to_account, class_name: 'Account', optional: true
  belongs_to :conversation, optional: true
  belongs_to :preloadable_poll, class_name: 'Poll', foreign_key: 'poll_id', optional: true

  belongs_to :thread, foreign_key: 'in_reply_to_id', class_name: 'Status', inverse_of: :replies, optional: true
  belongs_to :reblog, foreign_key: 'reblog_of_id', class_name: 'Status', inverse_of: :reblogs, optional: true

  has_many :favourites, inverse_of: :status, dependent: :destroy
  has_many :bookmarks, inverse_of: :status, dependent: :destroy
  has_many :reblogs, foreign_key: 'reblog_of_id', class_name: 'Status', inverse_of: :reblog, dependent: :destroy
  has_many :replies, foreign_key: 'in_reply_to_id', class_name: 'Status', inverse_of: :thread
  has_many :mentions, dependent: :destroy, inverse_of: :status
  has_many :active_mentions, -> { active }, class_name: 'Mention', inverse_of: :status
  has_many :media_attachments, dependent: :nullify

  has_and_belongs_to_many :tags
  has_and_belongs_to_many :preview_cards

  has_one :notification, as: :activity, dependent: :destroy
  has_one :status_stat, inverse_of: :status
  has_one :poll, inverse_of: :status, dependent: :destroy

  validates :uri, uniqueness: true, presence: true, unless: :local?
  validates :text, presence: true, unless: -> { with_media? || reblog? }
  validates_with StatusLengthValidator
  validates_with DisallowedHashtagsValidator
  validates :reblog, uniqueness: { scope: :account }, if: :reblog?
  validates :visibility, exclusion: { in: %w(direct limited) }, if: :reblog?
  validates :content_type, inclusion: { in: %w(text/plain text/markdown text/html) }, allow_nil: true

  accepts_nested_attributes_for :poll

  default_scope { recent.kept }

  scope :recent, -> { reorder(id: :desc) }
  scope :remote, -> { where(local: false).where.not(uri: nil) }
  scope :local,  -> { where(local: true).or(where(uri: nil)) }

  scope :with_accounts, ->(ids) { where(id: ids).includes(:account) }
  scope :without_replies, -> { where('statuses.reply = FALSE OR statuses.in_reply_to_account_id = statuses.account_id') }
  scope :without_reblogs, -> { where('statuses.reblog_of_id IS NULL') }
  scope :with_public_visibility, -> { where(visibility: :public) }
  scope :distributable, -> { where(visibility: [:public, :unlisted]) }
  scope :tagged_with, ->(tag) { joins(:statuses_tags).where(statuses_tags: { tag_id: tag }) }
  scope :excluding_silenced_accounts, -> { left_outer_joins(:account).where(accounts: { silenced_at: nil }) }
  scope :including_silenced_accounts, -> { left_outer_joins(:account).where.not(accounts: { silenced_at: nil }) }
  scope :not_excluded_by_account, ->(account) { where.not(account_id: account.excluded_from_timeline_account_ids) }
  scope :not_domain_blocked_by_account, ->(account) { account.excluded_from_timeline_domains.blank? ? left_outer_joins(:account) : left_outer_joins(:account).where('accounts.domain IS NULL OR accounts.domain NOT IN (?)', account.excluded_from_timeline_domains) }
  scope :tagged_with_all, ->(tags) {
    Array(tags).map(&:id).map(&:to_i).reduce(self) do |result, id|
      result.joins("INNER JOIN statuses_tags t#{id} ON t#{id}.status_id = statuses.id AND t#{id}.tag_id = #{id}")
    end
  }
  scope :tagged_with_none, ->(tags) {
    Array(tags).map(&:id).map(&:to_i).reduce(self) do |result, id|
      result.joins("LEFT OUTER JOIN statuses_tags t#{id} ON t#{id}.status_id = statuses.id AND t#{id}.tag_id = #{id}")
            .where("t#{id}.tag_id IS NULL")
    end
  }

  scope :not_local_only, -> { where(local_only: [false, nil]) }

  cache_associated :application,
                   :media_attachments,
                   :conversation,
                   :status_stat,
                   :tags,
                   :preview_cards,
                   :preloadable_poll,
                   account: :account_stat,
                   active_mentions: { account: :account_stat },
                   reblog: [
                     :application,
                     :tags,
                     :preview_cards,
                     :media_attachments,
                     :conversation,
                     :status_stat,
                     :preloadable_poll,
                     account: :account_stat,
                     active_mentions: { account: :account_stat },
                   ],
                   thread: { account: :account_stat }

  delegate :domain, to: :account, prefix: true

  REAL_TIME_WINDOW = 6.hours

  def searchable_by(preloaded = nil)
    ids = []

    ids << account_id if local?

    if preloaded.nil?
      ids += mentions.where(account: Account.local, silent: false).pluck(:account_id)
      ids += favourites.where(account: Account.local).pluck(:account_id)
      ids += reblogs.where(account: Account.local).pluck(:account_id)
      ids += bookmarks.where(account: Account.local).pluck(:account_id)
    else
      ids += preloaded.mentions[id] || []
      ids += preloaded.favourites[id] || []
      ids += preloaded.reblogs[id] || []
      ids += preloaded.bookmarks[id] || []
    end

    ids.uniq
  end

  def reply?
    !in_reply_to_id.nil? || attributes['reply']
  end

  def local?
    attributes['local'] || uri.nil?
  end

  def reblog?
    !reblog_of_id.nil?
  end

  def within_realtime_window?
    created_at >= REAL_TIME_WINDOW.ago
  end

  def verb
    if destroyed?
      :delete
    else
      reblog? ? :share : :post
    end
  end

  def object_type
    reply? ? :comment : :note
  end

  def proper
    reblog? ? reblog : self
  end

  def content
    proper.text
  end

  def target
    reblog
  end

  def preview_card
    preview_cards.first
  end

  def hidden?
    !distributable?
  end

  def distributable?
    public_visibility? || unlisted_visibility?
  end

  alias sign? distributable?

  def with_media?
    media_attachments.any?
  end

  def non_sensitive_with_media?
    !sensitive? && with_media?
  end

  def reported?
    @reported ||= Report.where(target_account: account).unresolved.where('? = ANY(status_ids)', id).exists?
  end

  def emojis
    return @emojis if defined?(@emojis)

    fields  = [spoiler_text, text]
    fields += preloadable_poll.options unless preloadable_poll.nil?

    @emojis = CustomEmoji.from_text(fields.join(' '), account.domain)
  end

  def mark_for_mass_destruction!
    @marked_for_mass_destruction = true
  end

  def marked_for_mass_destruction?
    @marked_for_mass_destruction
  end

  def replies_count
    status_stat&.replies_count || 0
  end

  def reblogs_count
    status_stat&.reblogs_count || 0
  end

  def favourites_count
    status_stat&.favourites_count || 0
  end

  def increment_count!(key)
    update_status_stat!(key => public_send(key) + 1)
  end

  def decrement_count!(key)
    update_status_stat!(key => [public_send(key) - 1, 0].max)
  end

  after_create_commit  :increment_counter_caches
  after_destroy_commit :decrement_counter_caches

  after_create_commit :store_uri, if: :local?
  after_create_commit :update_statistics, if: :local?

  around_create Mastodon::Snowflake::Callbacks

  before_create :set_locality

  before_validation :prepare_contents, if: :local?
  before_validation :set_reblog
  before_validation :set_visibility
  before_validation :set_conversation
  before_validation :set_local

  after_create :set_poll_id

  class << self
    def selectable_visibilities
      visibilities.keys - %w(direct limited)
    end

    def in_chosen_languages(account)
      where(language: nil).or where(language: account.chosen_languages)
    end

    def as_direct_timeline(account, limit = 20, max_id = nil, since_id = nil, cache_ids = false)
      # direct timeline is mix of direct message from_me and to_me.
      # 2 queries are executed with pagination.
      # constant expression using arel_table is required for partial index

      # _from_me part does not require any timeline filters
      query_from_me = where(account_id: account.id)
                      .where(Status.arel_table[:visibility].eq(3))
                      .limit(limit)
                      .order('statuses.id DESC')

      # _to_me part requires mute and block filter.
      # FIXME: may we check mutes.hide_notifications?
      query_to_me = Status
                    .joins(:mentions)
                    .merge(Mention.where(account_id: account.id))
                    .where(Status.arel_table[:visibility].eq(3))
                    .limit(limit)
                    .order('mentions.status_id DESC')
                    .not_excluded_by_account(account)

      if max_id.present?
        query_from_me = query_from_me.where('statuses.id < ?', max_id)
        query_to_me = query_to_me.where('mentions.status_id < ?', max_id)
      end

      if since_id.present?
        query_from_me = query_from_me.where('statuses.id > ?', since_id)
        query_to_me = query_to_me.where('mentions.status_id > ?', since_id)
      end

      if cache_ids
        # returns array of cache_ids object that have id and updated_at
        (query_from_me.cache_ids.to_a + query_to_me.cache_ids.to_a).uniq(&:id).sort_by(&:id).reverse.take(limit)
      else
        # returns ActiveRecord.Relation
        items = (query_from_me.select(:id).to_a + query_to_me.select(:id).to_a).uniq(&:id).sort_by(&:id).reverse.take(limit)
        Status.where(id: items.map(&:id))
      end
    end

    def as_public_timeline(account = nil, local_only = false)
      query = timeline_scope(local_only)
      query = query.without_replies unless Setting.show_replies_in_public_timelines

      apply_timeline_filters(query, account, [:local, true].include?(local_only))
    end

    def as_tag_timeline(tag, account = nil, local_only = false)
      query = timeline_scope(local_only).tagged_with(tag)

      apply_timeline_filters(query, account, local_only)
    end

    def as_outbox_timeline(account)
      where(account: account, visibility: :public)
    end

    def favourites_map(status_ids, account_id)
      Favourite.select('status_id').where(status_id: status_ids).where(account_id: account_id).each_with_object({}) { |f, h| h[f.status_id] = true }
    end

    def bookmarks_map(status_ids, account_id)
      Bookmark.select('status_id').where(status_id: status_ids).where(account_id: account_id).map { |f| [f.status_id, true] }.to_h
    end

    def reblogs_map(status_ids, account_id)
      unscoped.select('reblog_of_id').where(reblog_of_id: status_ids).where(account_id: account_id).each_with_object({}) { |s, h| h[s.reblog_of_id] = true }
    end

    def mutes_map(conversation_ids, account_id)
      ConversationMute.select('conversation_id').where(conversation_id: conversation_ids).where(account_id: account_id).each_with_object({}) { |m, h| h[m.conversation_id] = true }
    end

    def pins_map(status_ids, account_id)
      StatusPin.select('status_id').where(status_id: status_ids).where(account_id: account_id).each_with_object({}) { |p, h| h[p.status_id] = true }
    end

    def reload_stale_associations!(cached_items)
      account_ids = []

      cached_items.each do |item|
        account_ids << item.account_id
        account_ids << item.reblog.account_id if item.reblog?
      end

      account_ids.uniq!

      return if account_ids.empty?

      accounts = Account.where(id: account_ids).includes(:account_stat).index_by(&:id)

      cached_items.each do |item|
        item.account = accounts[item.account_id]
        item.reblog.account = accounts[item.reblog.account_id] if item.reblog?
      end
    end

    def permitted_for(target_account, account)
      visibility = [:public, :unlisted]

      if account.nil?
        where(visibility: visibility).not_local_only
      elsif target_account.blocking?(account) || (account.domain.present? && target_account.domain_blocking?(account.domain)) # get rid of blocked peeps
        none
      elsif account.id == target_account.id # author can see own stuff
        all
      else
        # followers can see followers-only stuff, but also things they are mentioned in.
        # non-followers can see everything that isn't private/direct, but can see stuff they are mentioned in.
        visibility.push(:private) if account.following?(target_account)

        scope = left_outer_joins(:reblog)

        scope.where(visibility: visibility)
             .or(scope.where(id: account.mentions.select(:status_id)))
             .merge(scope.where(reblog_of_id: nil).or(scope.where.not(reblogs_statuses: { account_id: account.excluded_from_timeline_account_ids })))
      end
    end

    def from_text(text)
      return [] if text.blank?

      text.scan(FetchLinkCardService::URL_PATTERN).map(&:first).uniq.map do |url|
        status = begin
          if TagManager.instance.local_url?(url)
            ActivityPub::TagManager.instance.uri_to_resource(url, Status)
          else
            EntityCache.instance.status(url)
          end
        end
        status&.distributable? ? status : nil
      end.compact
    end

    private

    def timeline_scope(scope = false)
      starting_scope = case scope
                       when :local, true
                         Status.local
                       when :remote
                         Status.remote
                       else
                         Status
                       end
      starting_scope = starting_scope.with_public_visibility
      if Setting.show_reblogs_in_public_timelines
        starting_scope
      else
        starting_scope.without_reblogs
      end
    end

    def apply_timeline_filters(query, account, local_only)
      if account.nil?
        filter_timeline_default(query)
      else
        filter_timeline_for_account(query, account, local_only)
      end
    end

    def filter_timeline_for_account(query, account, local_only)
      query = query.not_excluded_by_account(account)
      query = query.not_domain_blocked_by_account(account) unless local_only
      query = query.in_chosen_languages(account) if account.chosen_languages.present?
      query.merge(account_silencing_filter(account))
    end

    def filter_timeline_default(query)
      query.not_local_only.excluding_silenced_accounts
    end

    def account_silencing_filter(account)
      if account.silenced?
        including_myself = left_outer_joins(:account).where(account_id: account.id).references(:accounts)
        excluding_silenced_accounts.or(including_myself)
      else
        excluding_silenced_accounts
      end
    end
  end

  def marked_local_only?
    # match both with and without U+FE0F (the emoji variation selector)
    /#{local_only_emoji}\ufe0f?\z/.match?(content)
  end

  def local_only_emoji
    '👁'
  end

  def status_stat
    super || build_status_stat
  end

  private

  def update_status_stat!(attrs)
    return if marked_for_destruction? || destroyed?

    status_stat.update(attrs)
  end

  def store_uri
    update_column(:uri, ActivityPub::TagManager.instance.uri_for(self)) if uri.nil?
  end

  def prepare_contents
    text&.strip!
    spoiler_text&.strip!
  end

  def set_reblog
    self.reblog = reblog.reblog if reblog? && reblog.reblog?
  end

  def set_poll_id
    update_column(:poll_id, poll.id) unless poll.nil?
  end

  def set_visibility
    self.visibility = reblog.visibility if reblog? && visibility.nil?
    self.visibility = (account.locked? ? :private : :public) if visibility.nil?
    self.sensitive  = false if sensitive.nil?
  end

  def set_locality
    self.local_only = marked_local_only? if account.domain.nil? && !attribute_changed?(:local_only)
  end

  def set_conversation
    self.thread = thread.reblog if thread&.reblog?

    self.reply = !(in_reply_to_id.nil? && thread.nil?) unless reply

    if reply? && !thread.nil?
      self.in_reply_to_account_id = carried_over_reply_to_account_id
      self.conversation_id        = thread.conversation_id if conversation_id.nil?
    elsif conversation_id.nil?
      self.conversation = Conversation.new
    end
  end

  def carried_over_reply_to_account_id
    if thread.account_id == account_id && thread.reply?
      thread.in_reply_to_account_id
    else
      thread.account_id
    end
  end

  def set_local
    self.local = account.local?
  end

  def update_statistics
    return unless distributable?

    ActivityTracker.increment('activity:statuses:local')
  end

  def increment_counter_caches
    return if direct_visibility?

    account&.increment_count!(:statuses_count)
    reblog&.increment_count!(:reblogs_count) if reblog?
    thread&.increment_count!(:replies_count) if in_reply_to_id.present? && distributable?
  end

  def decrement_counter_caches
    return if direct_visibility? || marked_for_mass_destruction?

    account&.decrement_count!(:statuses_count)
    reblog&.decrement_count!(:reblogs_count) if reblog?
    thread&.decrement_count!(:replies_count) if in_reply_to_id.present? && distributable?
  end

  def unlink_from_conversations
    return unless direct_visibility?

    mentioned_accounts = mentions.includes(:account).map(&:account)
    inbox_owners       = mentioned_accounts.select(&:local?) + (account.local? ? [account] : [])

    inbox_owners.each do |inbox_owner|
      AccountConversation.remove_status(inbox_owner, self)
    end
  end
end