about summary refs log tree commit diff
path: root/app/services/notify_service.rb
blob: 039e007f504afe6911671592409d5acc1be1d3a3 (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
# frozen_string_literal: true

class NotifyService < BaseService
  def call(recipient, type, activity)
    @recipient    = recipient
    @activity     = activity
    @notification = Notification.new(account: @recipient, type: type, activity: @activity)

    return if recipient.user.nil? || blocked?

    create_notification!
    push_notification!
    push_to_conversation! if direct_message?
    send_email! if email_enabled?
  rescue ActiveRecord::RecordInvalid
    nil
  end

  private

  def blocked_mention?
    FeedManager.instance.filter?(:mentions, @notification.mention.status, @recipient)
  end

  def blocked_status?
    false
  end

  def blocked_favourite?
    false
  end

  def blocked_follow?
    false
  end

  def blocked_reblog?
    false
  end

  def blocked_follow_request?
    false
  end

  def blocked_poll?
    false
  end

  def blocked_update?
    false
  end

  def following_sender?
    return @following_sender if defined?(@following_sender)
    @following_sender = @recipient.following?(@notification.from_account) || @recipient.requested?(@notification.from_account)
  end

  def optional_non_follower?
    @recipient.user.settings.interactions['must_be_follower']  && !@notification.from_account.following?(@recipient)
  end

  def optional_non_following?
    @recipient.user.settings.interactions['must_be_following'] && !following_sender?
  end

  def message?
    @notification.type == :mention
  end

  def direct_message?
    message? && @notification.target_status.direct_visibility?
  end

  # Returns true if the sender has been mentionned by the recipient up the thread
  def response_to_recipient?
    return false if @notification.target_status.in_reply_to_id.nil?

    # Using an SQL CTE to avoid unneeded back-and-forth with SQL server in case of long threads
    !Status.count_by_sql([<<-SQL.squish, id: @notification.target_status.in_reply_to_id, recipient_id: @recipient.id, sender_id: @notification.from_account.id]).zero?
      WITH RECURSIVE ancestors(id, in_reply_to_id, replying_to_sender, path) AS (
          SELECT
            s.id,
            s.in_reply_to_id,
            (CASE
              WHEN s.account_id = :recipient_id THEN
                EXISTS (
                  SELECT *
                  FROM mentions m
                  WHERE m.silent = FALSE AND m.account_id = :sender_id AND m.status_id = s.id
                )
              ELSE
                FALSE
             END),
            ARRAY[s.id]
          FROM statuses s
          WHERE s.id = :id
        UNION ALL
          SELECT
            s.id,
            s.in_reply_to_id,
            (CASE
              WHEN s.account_id = :recipient_id THEN
                EXISTS (
                  SELECT *
                  FROM mentions m
                  WHERE m.silent = FALSE AND m.account_id = :sender_id AND m.status_id = s.id
                )
              ELSE
                FALSE
             END),
            st.path || s.id
          FROM ancestors st
          JOIN statuses s ON s.id = st.in_reply_to_id
          WHERE st.replying_to_sender IS FALSE AND NOT s.id = ANY(path)
      )
      SELECT COUNT(*)
      FROM ancestors st
      JOIN statuses s ON s.id = st.id
      WHERE st.replying_to_sender IS TRUE AND s.visibility = 3
    SQL
  end

  def from_staff?
    @notification.from_account.local? && @notification.from_account.user.present? && @notification.from_account.user.staff?
  end

  def optional_non_following_and_direct?
    direct_message? &&
      @recipient.user.settings.interactions['must_be_following_dm'] &&
      !following_sender? &&
      !response_to_recipient?
  end

  def hellbanned?
    @notification.from_account.silenced? && !following_sender?
  end

  def from_self?
    @recipient.id == @notification.from_account.id
  end

  def domain_blocking?
    @recipient.domain_blocking?(@notification.from_account.domain) && !following_sender?
  end

  def blocked?
    blocked   = @recipient.suspended?                            # Skip if the recipient account is suspended anyway
    blocked ||= from_self? && @notification.type != :poll        # Skip for interactions with self

    return blocked if message? && from_staff?

    blocked ||= domain_blocking?                                 # Skip for domain blocked accounts
    blocked ||= @recipient.blocking?(@notification.from_account) # Skip for blocked accounts
    blocked ||= @recipient.muting_notifications?(@notification.from_account)
    blocked ||= hellbanned?                                      # Hellban
    blocked ||= optional_non_follower?                           # Options
    blocked ||= optional_non_following?                          # Options
    blocked ||= optional_non_following_and_direct?               # Options
    blocked ||= conversation_muted?
    blocked ||= send("blocked_#{@notification.type}?")           # Type-dependent filters
    blocked
  end

  def conversation_muted?
    if @notification.target_status
      @recipient.muting_conversation?(@notification.target_status.conversation)
    else
      false
    end
  end

  def create_notification!
    @notification.save!
  end

  def push_notification!
    return if @notification.activity.nil?

    Redis.current.publish("timeline:#{@recipient.id}:notifications", Oj.dump(event: :notification, payload: InlineRenderer.render(@notification, @recipient, :notification)))
    send_push_notifications!
  end

  def push_to_conversation!
    return if @notification.activity.nil?
    AccountConversation.add_status(@recipient, @notification.target_status)
  end

  def send_push_notifications!
    subscriptions_ids = ::Web::PushSubscription.where(user_id: @recipient.user.id)
                                               .select { |subscription| subscription.pushable?(@notification) }
                                               .map(&:id)

    ::Web::PushNotificationWorker.push_bulk(subscriptions_ids) do |subscription_id|
      [subscription_id, @notification.id]
    end
  end

  def send_email!
    return if @notification.activity.nil?
    NotificationMailer.public_send(@notification.type, @recipient, @notification).deliver_later(wait: 2.minutes)
  end

  def email_enabled?
    @recipient.user.settings.notification_emails[@notification.type.to_s]
  end
end