summaryrefslogtreecommitdiff
path: root/app/services/todo_service.rb
blob: c2ca404b179e1b95926f0b7c0f4ac3ad15435311 (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
# TodoService class
#
# Used for creating/updating todos after certain user actions
#
# Ex.
#   TodoService.new.new_issue(issue, current_user)
#
class TodoService
  # When create an issue we should:
  #
  #  * create a todo for assignee if issue is assigned
  #  * create a todo for each mentioned user on issue
  #
  def new_issue(issue, current_user)
    new_issuable(issue, current_user)
  end

  # When update an issue we should:
  #
  #  * mark all pending todos related to the issue for the current user as done
  #
  def update_issue(issue, current_user, skip_users = [])
    update_issuable(issue, current_user, skip_users)
  end

  # When close an issue we should:
  #
  #  * mark all pending todos related to the target for the current user as done
  #
  def close_issue(issue, current_user)
    mark_pending_todos_as_done(issue, current_user)
  end

  # When we destroy a todo target we should:
  #
  #  * refresh the todos count cache for all users with todos on the target
  #
  # This needs to yield back to the caller to destroy the target, because it
  # collects the todo users before the todos themselves are deleted, then
  # updates the todo counts for those users.
  #
  def destroy_target(target)
    todo_users = User.where(id: target.todos.pending.select(:user_id)).to_a

    yield target

    todo_users.each(&:update_todos_count_cache)
  end

  # When we reassign an issue we should:
  #
  #  * create a pending todo for new assignee if issue is assigned
  #
  def reassigned_issue(issue, current_user, old_assignees = [])
    create_assignment_todo(issue, current_user, old_assignees)
  end

  # When create a merge request we should:
  #
  #  * creates a pending todo for assignee if merge request is assigned
  #  * create a todo for each mentioned user on merge request
  #
  def new_merge_request(merge_request, current_user)
    new_issuable(merge_request, current_user)
  end

  # When update a merge request we should:
  #
  #  * create a todo for each mentioned user on merge request
  #
  def update_merge_request(merge_request, current_user, skip_users = [])
    update_issuable(merge_request, current_user, skip_users)
  end

  # When close a merge request we should:
  #
  #  * mark all pending todos related to the target for the current user as done
  #
  def close_merge_request(merge_request, current_user)
    mark_pending_todos_as_done(merge_request, current_user)
  end

  # When we reassign a merge request we should:
  #
  #  * creates a pending todo for new assignee if merge request is assigned
  #
  def reassigned_merge_request(merge_request, current_user)
    create_assignment_todo(merge_request, current_user)
  end

  # When merge a merge request we should:
  #
  #  * mark all pending todos related to the target for the current user as done
  #
  def merge_merge_request(merge_request, current_user)
    mark_pending_todos_as_done(merge_request, current_user)
  end

  # When a build fails on the HEAD of a merge request we should:
  #
  #  * create a todo for author of MR to fix it
  #  * create a todo for merge_user to keep an eye on it
  #
  def merge_request_build_failed(merge_request)
    create_build_failed_todo(merge_request, merge_request.author)
    create_build_failed_todo(merge_request, merge_request.merge_user) if merge_request.merge_when_pipeline_succeeds?
  end

  # When a new commit is pushed to a merge request we should:
  #
  #  * mark all pending todos related to the merge request for that user as done
  #
  def merge_request_push(merge_request, current_user)
    mark_pending_todos_as_done(merge_request, current_user)
  end

  # When a build is retried to a merge request we should:
  #
  #  * mark all pending todos related to the merge request for the author as done
  #  * mark all pending todos related to the merge request for the merge_user as done
  #
  def merge_request_build_retried(merge_request)
    mark_pending_todos_as_done(merge_request, merge_request.author)
    mark_pending_todos_as_done(merge_request, merge_request.merge_user) if merge_request.merge_when_pipeline_succeeds?
  end

  # When a merge request could not be automatically merged due to its unmergeable state we should:
  #
  #  * create a todo for a merge_user
  #
  def merge_request_became_unmergeable(merge_request)
    create_unmergeable_todo(merge_request, merge_request.merge_user) if merge_request.merge_when_pipeline_succeeds?
  end

  # When create a note we should:
  #
  #  * mark all pending todos related to the noteable for the note author as done
  #  * create a todo for each mentioned user on note
  #
  def new_note(note, current_user)
    handle_note(note, current_user)
  end

  # When update a note we should:
  #
  #  * mark all pending todos related to the noteable for the current user as done
  #  * create a todo for each new user mentioned on note
  #
  def update_note(note, current_user, skip_users = [])
    handle_note(note, current_user, skip_users)
  end

  # When an emoji is awarded we should:
  #
  #  * mark all pending todos related to the awardable for the current user as done
  #
  def new_award_emoji(awardable, current_user)
    mark_pending_todos_as_done(awardable, current_user)
  end

  # When marking pending todos as done we should:
  #
  #  * mark all pending todos related to the target for the current user as done
  #
  def mark_pending_todos_as_done(target, user)
    attributes = attributes_for_target(target)
    pending_todos(user, attributes).update_all(state: :done)
    user.update_todos_count_cache
  end

  # When user marks some todos as done
  def mark_todos_as_done(todos, current_user)
    update_todos_state(todos, current_user, :done)
  end

  def mark_todos_as_done_by_ids(ids, current_user)
    todos = todos_by_ids(ids, current_user)
    mark_todos_as_done(todos, current_user)
  end

  # When user marks some todos as pending
  def mark_todos_as_pending(todos, current_user)
    update_todos_state(todos, current_user, :pending)
  end

  def mark_todos_as_pending_by_ids(ids, current_user)
    todos = todos_by_ids(ids, current_user)
    mark_todos_as_pending(todos, current_user)
  end

  # When user marks an issue as todo
  def mark_todo(issuable, current_user)
    attributes = attributes_for_todo(issuable.project, issuable, current_user, Todo::MARKED)
    create_todos(current_user, attributes)
  end

  def todo_exist?(issuable, current_user)
    TodosFinder.new(current_user).execute.exists?(target: issuable)
  end

  private

  def todos_by_ids(ids, current_user)
    current_user.todos.where(id: Array(ids))
  end

  def update_todos_state(todos, current_user, state)
    # Only update those that are not really on that state
    todos = todos.where.not(state: state)
    todos_ids = todos.pluck(:id)
    todos.unscope(:order).update_all(state: state)
    current_user.update_todos_count_cache
    todos_ids
  end

  def create_todos(users, attributes)
    Array(users).map do |user|
      next if pending_todos(user, attributes).exists?

      todo = Todo.create(attributes.merge(user_id: user.id))
      user.update_todos_count_cache
      todo
    end
  end

  def new_issuable(issuable, author)
    create_assignment_todo(issuable, author)
    create_mention_todos(issuable.project, issuable, author)
  end

  def update_issuable(issuable, author, skip_users = [])
    # Skip toggling a task list item in a description
    return if toggling_tasks?(issuable)

    create_mention_todos(issuable.project, issuable, author, nil, skip_users)
  end

  def toggling_tasks?(issuable)
    issuable.previous_changes.include?('description') &&
      issuable.tasks? && issuable.updated_tasks.any?
  end

  def handle_note(note, author, skip_users = [])
    # Skip system notes, and notes on project snippet
    return if note.system? || note.for_snippet?

    project = note.project
    target  = note.noteable

    mark_pending_todos_as_done(target, author)
    create_mention_todos(project, target, author, note, skip_users)
  end

  def create_assignment_todo(issuable, author, old_assignees = [])
    if issuable.assignees.any?
      assignees = issuable.assignees - old_assignees
      attributes = attributes_for_todo(issuable.project, issuable, author, Todo::ASSIGNED)
      create_todos(assignees, attributes)
    end
  end

  def create_mention_todos(project, target, author, note = nil, skip_users = [])
    # Create Todos for directly addressed users
    directly_addressed_users = filter_directly_addressed_users(project, note || target, author, skip_users)
    attributes = attributes_for_todo(project, target, author, Todo::DIRECTLY_ADDRESSED, note)
    create_todos(directly_addressed_users, attributes)

    # Create Todos for mentioned users
    mentioned_users = filter_mentioned_users(project, note || target, author, skip_users)
    attributes = attributes_for_todo(project, target, author, Todo::MENTIONED, note)
    create_todos(mentioned_users, attributes)
  end

  def create_build_failed_todo(merge_request, todo_author)
    attributes = attributes_for_todo(merge_request.project, merge_request, todo_author, Todo::BUILD_FAILED)
    create_todos(todo_author, attributes)
  end

  def create_unmergeable_todo(merge_request, merge_user)
    attributes = attributes_for_todo(merge_request.project, merge_request, merge_user, Todo::UNMERGEABLE)
    create_todos(merge_user, attributes)
  end

  def attributes_for_target(target)
    attributes = {
      project_id: target&.project&.id,
      target_id: target.id,
      target_type: target.class.name,
      commit_id: nil
    }

    if target.is_a?(Commit)
      attributes.merge!(target_id: nil, commit_id: target.id)
    end

    attributes
  end

  def attributes_for_todo(project, target, author, action, note = nil)
    attributes_for_target(target).merge!(
      project_id: project.id,
      author_id: author.id,
      action: action,
      note: note
    )
  end

  def filter_todo_users(users, project, target)
    reject_users_without_access(users, project, target).uniq
  end

  def filter_mentioned_users(project, target, author, skip_users = [])
    mentioned_users = target.mentioned_users(author) - skip_users
    filter_todo_users(mentioned_users, project, target)
  end

  def filter_directly_addressed_users(project, target, author, skip_users = [])
    directly_addressed_users = target.directly_addressed_users(author) - skip_users
    filter_todo_users(directly_addressed_users, project, target)
  end

  def reject_users_without_access(users, project, target)
    if target.is_a?(Note) && (target.for_issue? || target.for_merge_request?)
      target = target.noteable
    end

    if target.is_a?(Issuable)
      select_users(users, :"read_#{target.to_ability_name}", target)
    else
      select_users(users, :read_project, project)
    end
  end

  def select_users(users, ability, subject)
    users.select do |user|
      user.can?(ability.to_sym, subject)
    end
  end

  def pending_todos(user, criteria = {})
    valid_keys = [:project_id, :target_id, :target_type, :commit_id]
    user.todos.pending.where(criteria.slice(*valid_keys))
  end
end