summaryrefslogtreecommitdiff
path: root/app/models/note.rb
blob: 3e560a09fbd9772bba78fceb0dfbc5a1c90c93ed (plain)
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
# frozen_string_literal: true

# A note on the root of an issue, merge request, commit, or snippet.
#
# A note of this type is never resolvable.
class Note < ApplicationRecord
  extend ActiveModel::Naming
  include Gitlab::Utils::StrongMemoize
  include Participable
  include Mentionable
  include Awardable
  include Importable
  include FasterCacheKeys
  include Redactable
  include CacheMarkdownField
  include AfterCommitQueue
  include ResolvableNote
  include Editable
  include Gitlab::SQL::Pattern
  include ThrottledTouch
  include FromUnion
  include Sortable

  cache_markdown_field :note, pipeline: :note, issuable_state_filter_enabled: true

  redact_field :note

  TYPES_RESTRICTED_BY_ABILITY = {
    branch: :download_code
  }.freeze

  # Aliases to make application_helper#edited_time_ago_with_tooltip helper work properly with notes.
  # See https://gitlab.com/gitlab-org/gitlab-foss/merge_requests/10392/diffs#note_28719102
  alias_attribute :last_edited_by, :updated_by

  # Attribute containing rendered and redacted Markdown as generated by
  # Banzai::ObjectRenderer.
  attr_accessor :redacted_note_html

  # Total of all references as generated by Banzai::ObjectRenderer
  attr_accessor :total_reference_count

  # Number of user visible references as generated by Banzai::ObjectRenderer
  attr_accessor :user_visible_reference_count

  # Attribute used to store the attributes that have been changed by quick actions.
  attr_accessor :commands_changes

  default_value_for :system, false

  attr_mentionable :note, pipeline: :note
  participant :author

  belongs_to :project
  belongs_to :noteable, polymorphic: true # rubocop:disable Cop/PolymorphicAssociations
  belongs_to :author, class_name: "User"
  belongs_to :updated_by, class_name: "User"
  belongs_to :last_edited_by, class_name: 'User'
  belongs_to :review, inverse_of: :notes

  has_many :todos

  # The delete_all definition is required here in order
  # to generate the correct DELETE sql for
  # suggestions.delete_all calls
  has_many :suggestions, -> { order(:relative_order) },
    inverse_of: :note, dependent: :delete_all # rubocop:disable Cop/ActiveRecordDependent
  has_many :events, as: :target, dependent: :delete_all # rubocop:disable Cop/ActiveRecordDependent
  has_one :system_note_metadata
  has_one :note_diff_file, inverse_of: :diff_note, foreign_key: :diff_note_id
  has_many :diff_note_positions

  delegate :gfm_reference, :local_reference, to: :noteable
  delegate :name, to: :project, prefix: true
  delegate :name, :email, to: :author, prefix: true
  delegate :title, to: :noteable, allow_nil: true

  validates :note, presence: true
  validates :note, length: { maximum: Gitlab::Database::MAX_TEXT_SIZE_LIMIT }
  validates :project, presence: true, if: :for_project_noteable?

  # Attachments are deprecated and are handled by Markdown uploader
  validates :attachment, file_size: { maximum: :max_attachment_size }

  validates :noteable_type, presence: true
  validates :noteable_id, presence: true, unless: [:for_commit?, :importing?]
  validates :commit_id, presence: true, if: :for_commit?
  validates :author, presence: true
  validates :discussion_id, presence: true, format: { with: /\A\h{40}\z/ }

  validate unless: [:for_commit?, :importing?, :skip_project_check?] do |note|
    unless note.noteable.try(:project) == note.project
      errors.add(:project, 'does not match noteable project')
    end
  end

  validate :does_not_exceed_notes_limit?, on: :create, unless: [:system?, :importing?]

  # @deprecated attachments are handler by the MarkdownUploader
  mount_uploader :attachment, AttachmentUploader

  # Scopes
  scope :for_commit_id, ->(commit_id) { where(noteable_type: "Commit", commit_id: commit_id) }
  scope :system, -> { where(system: true) }
  scope :user, -> { where(system: false) }
  scope :common, -> { where(noteable_type: ["", nil]) }
  scope :fresh, -> { order_created_asc.with_order_id_asc }
  scope :updated_after, ->(time) { where('updated_at > ?', time) }
  scope :with_updated_at, ->(time) { where(updated_at: time) }
  scope :inc_author_project, -> { includes(:project, :author) }
  scope :inc_author, -> { includes(:author) }
  scope :with_api_entity_associations, -> { preload(:note_diff_file, :author) }
  scope :inc_relations_for_view, -> do
    includes(:project, { author: :status }, :updated_by, :resolved_by, :award_emoji,
             { system_note_metadata: :description_version }, :note_diff_file, :diff_note_positions, :suggestions)
  end

  scope :with_notes_filter, -> (notes_filter) do
    case notes_filter
    when UserPreference::NOTES_FILTERS[:only_comments]
      user
    when UserPreference::NOTES_FILTERS[:only_activity]
      system
    else
      all
    end
  end

  scope :diff_notes, -> { where(type: %w(LegacyDiffNote DiffNote)) }
  scope :new_diff_notes, -> { where(type: 'DiffNote') }
  scope :non_diff_notes, -> { where(type: ['Note', 'DiscussionNote', nil]) }

  scope :with_associations, -> do
    # FYI noteable cannot be loaded for LegacyDiffNote for commits
    includes(:author, :noteable, :updated_by,
             project: [:project_members, :namespace, { group: [:group_members] }])
  end
  scope :with_metadata, -> { includes(:system_note_metadata) }
  scope :with_web_entity_associations, -> { preload(:project, :author, :noteable) }

  scope :for_note_or_capitalized_note, ->(text) { where(note: [text, text.capitalize]) }
  scope :like_note_or_capitalized_note, ->(text) { where('(note LIKE ? OR note LIKE ?)', text, text.capitalize) }

  before_validation :nullify_blank_type, :nullify_blank_line_code
  after_save :keep_around_commit, if: :for_project_noteable?, unless: :importing?
  after_save :expire_etag_cache, unless: :importing?
  after_save :touch_noteable, unless: :importing?
  after_destroy :expire_etag_cache
  after_commit :notify_after_create, on: :create
  after_commit :notify_after_destroy, on: :destroy

  class << self
    extend Gitlab::Utils::Override

    def model_name
      ActiveModel::Name.new(self, nil, 'note')
    end

    def discussions(context_noteable = nil)
      Discussion.build_collection(all.includes(:noteable).fresh, context_noteable)
    end

    # Note: Where possible consider using Discussion#lazy_find to return
    # Discussions in order to benefit from having records batch loaded.
    def find_discussion(discussion_id)
      notes = where(discussion_id: discussion_id).fresh.to_a

      return if notes.empty?

      Discussion.build(notes)
    end

    # Group diff discussions by line code or file path.
    # It is not needed to group by line code when comment is
    # on an image.
    def grouped_diff_discussions(diff_refs = nil)
      groups = {}

      diff_notes.fresh.discussions.each do |discussion|
        group_key =
          if discussion.on_image?
            discussion.file_new_path
          else
            discussion.line_code_in_diffs(diff_refs)
          end

        if group_key
          discussions = groups[group_key] ||= []
          discussions << discussion
        end
      end

      groups
    end

    def positions
      where.not(position: nil)
        .select(:id, :type, :position) # ActiveRecord needs id and type for typecasting.
        .map(&:position)
    end

    def count_for_collection(ids, type, count_column = 'COUNT(*) as count')
      user.select(:noteable_id, count_column)
        .group(:noteable_id)
        .where(noteable_type: type, noteable_id: ids)
    end

    def search(query)
      fuzzy_search(query, [:note])
    end

    # Override the `Sortable` module's `.simple_sorts` to remove name sorting,
    # as a `Note` does not have any property that correlates to a "name".
    override :simple_sorts
    def simple_sorts
      super.except('name_asc', 'name_desc')
    end

    def cherry_picked_merge_requests(shas)
      where(noteable_type: 'MergeRequest', commit_id: shas).select(:noteable_id)
    end
  end

  # rubocop: disable CodeReuse/ServiceClass
  def system_note_with_references?
    return unless system?

    if force_cross_reference_regex_check?
      matches_cross_reference_regex?
    else
      ::SystemNotes::IssuablesService.cross_reference?(note)
    end
  end
  # rubocop: enable CodeReuse/ServiceClass

  def diff_note?
    false
  end

  def active?
    true
  end

  def max_attachment_size
    Gitlab::CurrentSettings.max_attachment_size.megabytes.to_i
  end

  def hook_attrs
    Gitlab::HookData::NoteBuilder.new(self).build
  end

  def supports_suggestion?
    false
  end

  def for_commit?
    noteable_type == "Commit"
  end

  def for_issue?
    noteable_type == "Issue"
  end

  def for_merge_request?
    noteable_type == "MergeRequest"
  end

  def for_snippet?
    noteable_type == "Snippet"
  end

  def for_alert_mangement_alert?
    noteable_type == 'AlertManagement::Alert'
  end

  def for_project_snippet?
    noteable.is_a?(ProjectSnippet)
  end

  def for_personal_snippet?
    noteable.is_a?(PersonalSnippet)
  end

  def for_project_noteable?
    !for_personal_snippet?
  end

  def for_design?
    noteable_type == DesignManagement::Design.name
  end

  def for_issuable?
    for_issue? || for_merge_request?
  end

  def skip_project_check?
    !for_project_noteable?
  end

  def commit
    @commit ||= project.commit(commit_id) if commit_id.present?
  end

  # Notes on merge requests and commits can be traced back to one or several
  # MRs. This method returns a relation if the note is for one of these types,
  # or nil if it is a note on some other object.
  def merge_requests
    if for_commit?
      project.merge_requests.by_commit_sha(commit_id)
    elsif for_merge_request?
      MergeRequest.id_in(noteable_id)
    else
      nil
    end
  end

  # override to return commits, which are not active record
  def noteable
    return commit if for_commit?

    super
  rescue
    # Temp fix to prevent app crash
    # if note commit id doesn't exist
    nil
  end

  # FIXME: Hack for polymorphic associations with STI
  #        For more information visit http://api.rubyonrails.org/classes/ActiveRecord/Associations/ClassMethods.html#label-Polymorphic+Associations
  def noteable_type=(noteable_type)
    super(noteable_type.to_s.classify.constantize.base_class.to_s)
  end

  def noteable_assignee_or_author?(user)
    return false unless user
    return false unless noteable.respond_to?(:author_id)
    return noteable.assignee_or_author?(user) if [MergeRequest, Issue].include?(noteable.class)

    noteable.author_id == user.id
  end

  def contributor?
    project&.team&.contributor?(self.author_id)
  end

  def noteable_author?(noteable)
    return false unless ::Feature.enabled?(:show_author_on_note, project)

    noteable.author == self.author
  end

  def project_name
    project&.name
  end

  def confidential?(include_noteable: false)
    return true if confidential

    include_noteable && noteable.try(:confidential?)
  end

  def editable?
    !system?
  end

  # We used `last_edited_at` as an alias of `updated_at` before.
  # This makes it compatible with the previous way without data migration.
  def last_edited_at
    super || updated_at
  end

  # Since we used `updated_at` as `last_edited_at`, it could be touched by transforming / resolving a note.
  # This makes sure it is only marked as edited when the note body is updated.
  def edited?
    return false if updated_by.blank?

    super
  end

  # This method is to be used for checking read permissions on a note instead of `system_note_with_references_visible_for?`
  def readable_by?(user)
    # note_policy accounts for #system_note_with_references_visible_for?(user) check when granting read access
    Ability.allowed?(user, :read_note, self)
  end

  def award_emoji?
    can_be_award_emoji? && contains_emoji_only?
  end

  def emoji_awardable?
    !system?
  end

  def can_be_award_emoji?
    noteable.is_a?(Awardable) && !part_of_discussion?
  end

  def contains_emoji_only?
    note =~ /\A#{Banzai::Filter::EmojiFilter.emoji_pattern}\s?\Z/
  end

  def to_ability_name
    model_name.singular
  end

  def noteable_ability_name
    if for_snippet?
      'snippet'
    elsif for_alert_mangement_alert?
      'alert_management_alert'
    else
      noteable_type.demodulize.underscore
    end
  end

  def can_be_discussion_note?
    self.noteable.supports_discussions? && !part_of_discussion?
  end

  def can_create_todo?
    # Skip system notes, and notes on snippets
    !system? && !for_snippet?
  end

  def discussion_class(noteable = nil)
    # When commit notes are rendered on an MR's Discussion page, they are
    # displayed in one discussion instead of individually.
    # See also `#discussion_id` and `Discussion.override_discussion_id`.
    if noteable && noteable != self.noteable
      OutOfContextDiscussion
    else
      IndividualNoteDiscussion
    end
  end

  # See `Discussion.override_discussion_id` for details.
  def discussion_id(noteable = nil)
    discussion_class(noteable).override_discussion_id(self) || super() || ensure_discussion_id
  end

  # Returns a discussion containing just this note.
  # This method exists as an alternative to `#discussion` to use when the methods
  # we intend to call on the Discussion object don't require it to have all of its notes,
  # and just depend on the first note or the type of discussion. This saves us a DB query.
  def to_discussion(noteable = nil)
    Discussion.build([self], noteable)
  end

  # Returns the entire discussion this note is part of.
  # Consider using `#to_discussion` if we do not need to render the discussion
  # and all its notes and if we don't care about the discussion's resolvability status.
  def discussion
    strong_memoize(:discussion) do
      full_discussion = self.noteable.notes.find_discussion(self.discussion_id) if part_of_discussion?
      full_discussion || to_discussion
    end
  end

  def start_of_discussion?
    discussion.first_note == self
  end

  def part_of_discussion?
    !to_discussion.individual_note?
  end

  def in_reply_to?(other)
    case other
    when Note
      if part_of_discussion?
        in_reply_to?(other.noteable) && in_reply_to?(other.to_discussion)
      else
        in_reply_to?(other.noteable)
      end
    when Discussion
      self.discussion_id == other.id
    when Noteable
      self.noteable == other
    else
      false
    end
  end

  def references
    refs = [noteable]

    if part_of_discussion?
      refs += discussion.notes.take_while { |n| n.id < id }
    end

    refs
  end

  def expire_etag_cache
    noteable&.expire_note_etag_cache
  end

  def touch(*args)
    # We're not using an explicit transaction here because this would in all
    # cases result in all future queries going to the primary, even if no writes
    # are performed.
    #
    # We touch the noteable first so its SELECT query can run before our writes,
    # ensuring it runs on a secondary (if no prior write took place).
    touch_noteable
    super
  end

  # By default Rails will issue an "SELECT *" for the relation, which is
  # overkill for just updating the timestamps. To work around this we manually
  # touch the data so we can SELECT only the columns we need.
  def touch_noteable
    # Commits are not stored in the DB so we can't touch them.
    return if for_commit?

    assoc = association(:noteable)

    noteable_object =
      if assoc.loaded?
        noteable
      else
        # If the object is not loaded (e.g. when notes are loaded async) we
        # _only_ want the data we actually need.
        assoc.scope.select(:id, :updated_at).take
      end

    noteable_object&.touch

    # We return the noteable object so we can re-use it in EE for Elasticsearch.
    noteable_object
  end

  def notify_after_create
    noteable&.after_note_created(self)
  end

  def notify_after_destroy
    noteable&.after_note_destroyed(self)
  end

  def banzai_render_context(field)
    super.merge(noteable: noteable, system_note: system?, label_url_method: noteable_label_url_method)
  end

  def retrieve_upload(_identifier, paths)
    Upload.find_by(model: self, path: paths)
  end

  def resource_parent
    project
  end

  def user_mentions
    return Note.none unless noteable.present?

    noteable.user_mentions.where(note: self)
  end

  def system_note_with_references_visible_for?(user)
    return true unless system?

    (!system_note_with_references? || all_referenced_mentionables_allowed?(user)) && system_note_viewable_by?(user)
  end

  def parent_user
    noteable.author if for_personal_snippet?
  end

  def skip_notification?
    review.present? || !author.can_trigger_notifications?
  end

  private

  # Using this method followed by a call to *save* may result in *ActiveRecord::RecordNotUnique* exception
  # in a multi-threaded environment. Make sure to use it within a *safe_ensure_unique* block.
  def model_user_mention
    return if user_mentions.is_a?(ActiveRecord::NullRelation)

    user_mentions.first_or_initialize
  end

  def system_note_viewable_by?(user)
    return true unless system_note_metadata

    restriction = TYPES_RESTRICTED_BY_ABILITY[system_note_metadata.action.to_sym]
    return Ability.allowed?(user, restriction, project) if restriction

    true
  end

  def keep_around_commit
    project.repository.keep_around(self.commit_id)
  end

  def nullify_blank_type
    self.type = nil if self.type.blank?
  end

  def nullify_blank_line_code
    self.line_code = nil if self.line_code.blank?
  end

  def ensure_discussion_id
    return if self.attribute_present?(:discussion_id)

    self.discussion_id = derive_discussion_id
  end

  def derive_discussion_id
    discussion_class.discussion_id(self)
  end

  def all_referenced_mentionables_allowed?(user)
    if user_visible_reference_count.present? && total_reference_count.present?
      # if they are not equal, then there are private/confidential references as well
      user_visible_reference_count > 0 && user_visible_reference_count == total_reference_count
    else
      refs = all_references(user)
      refs.all.any? && refs.stateful_not_visible_counter == 0
    end
  end

  def force_cross_reference_regex_check?
    return unless system?

    system_note_metadata&.cross_reference_types&.include?(system_note_metadata&.action)
  end

  def does_not_exceed_notes_limit?
    return unless noteable

    errors.add(:base, _('Maximum number of comments exceeded')) if noteable.notes.count >= Noteable::MAX_NOTES_LIMIT
  end

  def noteable_label_url_method
    for_merge_request? ? :project_merge_requests_url : :project_issues_url
  end
end

Note.prepend_if_ee('EE::Note')