summaryrefslogtreecommitdiff
path: root/app/services/notification_service.rb
blob: 3bdf00a8291cf56a3c633304a8c47d7d65b41a3f (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
# NotificationService class
#
# Used for notifying users with emails about different events
#
# Ex.
#   NotificationService.new.new_issue(issue, current_user)
#
class NotificationService
  # Always notify user about ssh key added
  # only if ssh key is not deploy key
  #
  # This is security email so it will be sent
  # even if user disabled notifications
  def new_key(key)
    if key.user
      mailer.new_ssh_key_email(key.id).deliver_later
    end
  end

  # Always notify user about email added to profile
  def new_email(email)
    if email.user
      mailer.new_email_email(email.id).deliver_later
    end
  end

  # When create an issue we should send an email to:
  #
  #  * issue assignee if their notification level is not Disabled
  #  * project team members with notification level higher then Participating
  #  * watchers of the issue's labels
  #
  def new_issue(issue, current_user)
    new_resource_email(issue, issue.project, 'new_issue_email')
  end

  # When we close an issue we should send an email to:
  #
  #  * issue author if their notification level is not Disabled
  #  * issue assignee if their notification level is not Disabled
  #  * project team members with notification level higher then Participating
  #
  def close_issue(issue, current_user)
    close_resource_email(issue, issue.project, current_user, 'closed_issue_email')
  end

  # When we reassign an issue we should send an email to:
  #
  #  * issue old assignee if their notification level is not Disabled
  #  * issue new assignee if their notification level is not Disabled
  #
  def reassigned_issue(issue, current_user)
    reassign_resource_email(issue, issue.project, current_user, 'reassigned_issue_email')
  end

  # When we add labels to an issue we should send an email to:
  #
  #  * watchers of the issue's labels
  #
  def relabeled_issue(issue, added_labels, current_user)
    relabeled_resource_email(issue, added_labels, current_user, 'relabeled_issue_email')
  end

  # When create a merge request we should send an email to:
  #
  #  * mr assignee if their notification level is not Disabled
  #  * project team members with notification level higher then Participating
  #  * watchers of the mr's labels
  #
  def new_merge_request(merge_request, current_user)
    new_resource_email(merge_request, merge_request.target_project, 'new_merge_request_email')
  end

  # When we reassign a merge_request we should send an email to:
  #
  #  * merge_request old assignee if their notification level is not Disabled
  #  * merge_request assignee if their notification level is not Disabled
  #
  def reassigned_merge_request(merge_request, current_user)
    reassign_resource_email(merge_request, merge_request.target_project, current_user, 'reassigned_merge_request_email')
  end

  # When we add labels to a merge request we should send an email to:
  #
  #  * watchers of the mr's labels
  #
  def relabeled_merge_request(merge_request, added_labels, current_user)
    relabeled_resource_email(merge_request, added_labels, current_user, 'relabeled_merge_request_email')
  end

  def close_mr(merge_request, current_user)
    close_resource_email(merge_request, merge_request.target_project, current_user, 'closed_merge_request_email')
  end

  def reopen_issue(issue, current_user)
    reopen_resource_email(issue, issue.project, current_user, 'issue_status_changed_email', 'reopened')
  end

  def merge_mr(merge_request, current_user)
    close_resource_email(
      merge_request,
      merge_request.target_project,
      current_user,
      'merged_merge_request_email'
    )
  end

  def reopen_mr(merge_request, current_user)
    reopen_resource_email(
      merge_request,
      merge_request.target_project,
      current_user,
      'merge_request_status_email',
      'reopened'
    )
  end

  # Notify new user with email after creation
  def new_user(user, token = nil)
    # Don't email omniauth created users
    mailer.new_user_email(user.id, token).deliver_later unless user.identities.any?
  end

  # Notify users on new note in system
  #
  # TODO: split on methods and refactor
  #
  def new_note(note)
    return true unless note.noteable_type.present?

    # ignore gitlab service messages
    return true if note.note.start_with?('Status changed to closed')
    return true if note.cross_reference? && note.system == true
    return true if note.is_award

    target = note.noteable

    recipients = []

    mentioned_users = note.mentioned_users
    mentioned_users.select! do |user|
      user.can?(:read_project, note.project)
    end

    # Add all users participating in the thread (author, assignee, comment authors)
    participants =
      if target.respond_to?(:participants)
        target.participants(note.author)
      else
        mentioned_users
      end
    recipients = recipients.concat(participants)

    # Merge project watchers
    recipients = add_project_watchers(recipients, note.project)

    # Reject users with Mention notification level, except those mentioned in _this_ note.
    recipients = reject_mention_users(recipients - mentioned_users, note.project)
    recipients = recipients + mentioned_users

    recipients = reject_muted_users(recipients, note.project)

    recipients = add_subscribed_users(recipients, note.noteable)
    recipients = reject_unsubscribed_users(recipients, note.noteable)

    recipients.delete(note.author)
    recipients = recipients.uniq

    # build notify method like 'note_commit_email'
    notify_method = "note_#{note.noteable_type.underscore}_email".to_sym
    recipients.each do |recipient|
      mailer.send(notify_method, recipient.id, note.id).deliver_later
    end
  end

  def invite_project_member(project_member, token)
    mailer.project_member_invited_email(project_member.id, token).deliver_later
  end

  def accept_project_invite(project_member)
    mailer.project_invite_accepted_email(project_member.id).deliver_later
  end

  def decline_project_invite(project_member)
    mailer.project_invite_declined_email(
      project_member.project.id,
      project_member.invite_email,
      project_member.access_level,
      project_member.created_by_id
    ).deliver_later
  end

  def new_project_member(project_member)
    mailer.project_access_granted_email(project_member.id).deliver_later
  end

  def update_project_member(project_member)
    mailer.project_access_granted_email(project_member.id).deliver_later
  end

  def invite_group_member(group_member, token)
    mailer.group_member_invited_email(group_member.id, token).deliver_later
  end

  def accept_group_invite(group_member)
    mailer.group_invite_accepted_email(group_member.id).deliver_later
  end

  def decline_group_invite(group_member)
    mailer.group_invite_declined_email(
      group_member.group.id,
      group_member.invite_email,
      group_member.access_level,
      group_member.created_by_id
    ).deliver_later
  end

  def new_group_member(group_member)
    mailer.group_access_granted_email(group_member.id).deliver_later
  end

  def update_group_member(group_member)
    mailer.group_access_granted_email(group_member.id).deliver_later
  end

  def project_was_moved(project, old_path_with_namespace)
    recipients = project.team.members
    recipients = reject_muted_users(recipients, project)

    recipients.each do |recipient|
      mailer.project_was_moved_email(
        project.id,
        recipient.id,
        old_path_with_namespace
      ).deliver_later
    end
  end

  def issue_moved(issue, new_issue, current_user)
    recipients = build_recipients(issue, issue.project, current_user)

    recipients.map do |recipient|
      email = mailer.issue_moved_email(recipient, issue, new_issue, current_user)
      email.deliver_later
      email
    end
  end

  protected

  # Get project users with WATCH notification level
  def project_watchers(project)
    project_members = project_member_notification(project)

    users_with_project_level_global = project_member_notification(project, Notification::N_GLOBAL)
    users_with_group_level_global = group_member_notification(project, Notification::N_GLOBAL)
    users = users_with_global_level_watch([users_with_project_level_global, users_with_group_level_global].flatten.uniq)

    users_with_project_setting = select_project_member_setting(project, users_with_project_level_global, users)
    users_with_group_setting = select_group_member_setting(project, project_members, users_with_group_level_global, users)

    User.where(id: users_with_project_setting.concat(users_with_group_setting).uniq).to_a
  end

  def project_member_notification(project, notification_level=nil)
    project_members = project.project_members

    if notification_level
      project_members.where(notification_level: notification_level).pluck(:user_id)
    else
      project_members.pluck(:user_id)
    end
  end

  def group_member_notification(project, notification_level)
    if project.group
      project.group.group_members.where(notification_level: notification_level).pluck(:user_id)
    else
      []
    end
  end

  def users_with_global_level_watch(ids)
    User.where(
      id: ids,
      notification_level: Notification::N_WATCH
    ).pluck(:id)
  end

  # Build a list of users based on project notifcation settings
  def select_project_member_setting(project, global_setting, users_global_level_watch)
    users = project_member_notification(project, Notification::N_WATCH)

    # If project setting is global, add to watch list if global setting is watch
    global_setting.each do |user_id|
      if users_global_level_watch.include?(user_id)
        users << user_id
      end
    end

    users
  end

  # Build a list of users based on group notification settings
  def select_group_member_setting(project, project_members, global_setting, users_global_level_watch)
    uids = group_member_notification(project, Notification::N_WATCH)

    # Group setting is watch, add to users list if user is not project member
    users = []
    uids.each do |user_id|
      if project_members.exclude?(user_id)
        users << user_id
      end
    end

    # Group setting is global, add to users list if global setting is watch
    global_setting.each do |user_id|
      if project_members.exclude?(user_id) && users_global_level_watch.include?(user_id)
        users << user_id
      end
    end

    users
  end

  def add_project_watchers(recipients, project)
    recipients.concat(project_watchers(project)).compact.uniq
  end

  # Remove users with disabled notifications from array
  # Also remove duplications and nil recipients
  def reject_muted_users(users, project = nil)
    reject_users(users, :disabled?, project)
  end

  # Remove users with notification level 'Mentioned'
  def reject_mention_users(users, project = nil)
    reject_users(users, :mention?, project)
  end

  # Reject users which method_name from notification object returns true.
  #
  # Example:
  #   reject_users(users, :watch?, project)
  #
  def reject_users(users, method_name, project = nil)
    users = users.to_a.compact.uniq
    users = users.reject(&:blocked?)

    users.reject do |user|
      next user.notification.send(method_name) unless project

      member = project.project_members.find_by(user_id: user.id)

      if !member && project.group
        member = project.group.group_members.find_by(user_id: user.id)
      end

      # reject users who globally set mention notification and has no membership
      next user.notification.send(method_name) unless member

      # reject users who set mention notification in project
      next true if member.notification.send(method_name)

      # reject users who have N_MENTION in project and disabled in global settings
      member.notification.global? && user.notification.send(method_name)
    end
  end

  def reject_unsubscribed_users(recipients, target)
    return recipients unless target.respond_to? :subscriptions

    recipients.reject do |user|
      subscription = target.subscriptions.find_by_user_id(user.id)
      subscription && !subscription.subscribed
    end
  end

  def add_subscribed_users(recipients, target)
    return recipients unless target.respond_to? :subscribers

    recipients + target.subscribers
  end

  def add_labels_subscribers(recipients, target, labels: nil)
    return recipients unless target.respond_to? :labels

    (labels || target.labels).each do |label|
      recipients += label.subscribers
    end

    recipients
  end

  def new_resource_email(target, project, method)
    recipients = build_recipients(target, project, target.author, action: :new)

    recipients.each do |recipient|
      mailer.send(method, recipient.id, target.id).deliver_later
    end
  end

  def close_resource_email(target, project, current_user, method)
    recipients = build_recipients(target, project, current_user)

    recipients.each do |recipient|
      mailer.send(method, recipient.id, target.id, current_user.id).deliver_later
    end
  end

  def reassign_resource_email(target, project, current_user, method)
    previous_assignee_id = previous_record(target, 'assignee_id')
    previous_assignee = User.find_by(id: previous_assignee_id) if previous_assignee_id

    recipients = build_recipients(target, project, current_user, action: :reassign, previous_assignee: previous_assignee)

    recipients.each do |recipient|
      mailer.send(
        method,
        recipient.id,
        target.id,
        previous_assignee_id,
        current_user.id
      ).deliver_later
    end
  end

  def relabeled_resource_email(target, labels, current_user, method)
    recipients = build_relabeled_recipients(target, current_user, labels: labels)
    label_names = labels.map(&:name)

    recipients.each do |recipient|
      mailer.send(method, recipient.id, target.id, label_names, current_user.id).deliver_later
    end
  end

  def reopen_resource_email(target, project, current_user, method, status)
    recipients = build_recipients(target, project, current_user)

    recipients.each do |recipient|
      mailer.send(method, recipient.id, target.id, status, current_user.id).deliver_later
    end
  end

  def build_recipients(target, project, current_user, action: nil, previous_assignee: nil)
    recipients = target.participants(current_user)

    recipients = add_project_watchers(recipients, project)
    recipients = reject_mention_users(recipients, project)

    # Re-assign is considered as a mention of the new assignee so we add the
    # new assignee to the list of recipients after we rejected users with
    # the "on mention" notification level
    if action == :reassign
      recipients << previous_assignee if previous_assignee
      recipients << target.assignee
    end

    recipients = reject_muted_users(recipients, project)
    recipients = add_subscribed_users(recipients, target)

    if action == :new
      recipients = add_labels_subscribers(recipients, target)
    end

    recipients = reject_unsubscribed_users(recipients, target)

    recipients.delete(current_user)

    recipients.uniq
  end

  def build_relabeled_recipients(target, current_user, labels:)
    recipients = add_labels_subscribers([], target, labels: labels)
    recipients = reject_unsubscribed_users(recipients, target)
    recipients.delete(current_user)
    recipients.uniq
  end

  def mailer
    Notify
  end

  def previous_record(object, attribute)
    if object && attribute
      if object.previous_changes.include?(attribute)
        object.previous_changes[attribute].first
      end
    end
  end
end