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# frozen_string_literal: true
class NotifyService < BaseService
include Redisable
def call(recipient, type, activity)
@recipient = recipient
@activity = activity
@notification = Notification.new(account: @recipient, type: type, activity: @activity)
return if recipient.user.nil? || blocked?
@notification.save!
# It's possible the underlying activity has been deleted
# between the save call and now
return if @notification.activity.nil?
push_notification!
push_to_conversation! if direct_message?
send_email! if email_needed?
rescue ActiveRecord::RecordInvalid
nil
end
private
def blocked_mention?
FeedManager.instance.filter?(:mentions, @notification.mention.status, @recipient)
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 mentioned 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, depth_limit: 100]).zero?
WITH RECURSIVE ancestors(id, in_reply_to_id, mention_id, path, depth) AS (
SELECT s.id, s.in_reply_to_id, m.id, ARRAY[s.id], 0
FROM statuses s
LEFT JOIN mentions m ON m.silent = FALSE AND m.account_id = :sender_id AND m.status_id = s.id
WHERE s.id = :id
UNION ALL
SELECT s.id, s.in_reply_to_id, m.id, st.path || s.id, st.depth + 1
FROM ancestors st
JOIN statuses s ON s.id = st.in_reply_to_id
LEFT JOIN mentions m ON m.silent = FALSE AND m.account_id = :sender_id AND m.status_id = s.id
WHERE st.mention_id IS NULL AND NOT s.id = ANY(path) AND st.depth < :depth_limit
)
SELECT COUNT(*)
FROM ancestors st
JOIN statuses s ON s.id = st.id
WHERE st.mention_id IS NOT NULL AND s.visibility = 3
SQL
end
def from_staff?
@notification.from_account.local? && @notification.from_account.user.present? && @notification.from_account.user_role&.overrides?(@recipient.user_role)
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?
blocked ||= from_self? && @notification.type != :poll
return blocked if message? && from_staff?
blocked ||= domain_blocking?
blocked ||= @recipient.blocking?(@notification.from_account)
blocked ||= @recipient.muting_notifications?(@notification.from_account)
blocked ||= hellbanned?
blocked ||= optional_non_follower?
blocked ||= optional_non_following?
blocked ||= optional_non_following_and_direct?
blocked ||= conversation_muted?
blocked ||= blocked_mention? if @notification.type == :mention
blocked
end
def conversation_muted?
if @notification.target_status
@recipient.muting_conversation?(@notification.target_status.conversation)
else
false
end
end
def push_notification!
push_to_streaming_api! if subscribed_to_streaming_api?
push_to_web_push_subscriptions!
end
def push_to_streaming_api!
redis.publish("timeline:#{@recipient.id}:notifications", Oj.dump(event: :notification, payload: InlineRenderer.render(@notification, @recipient, :notification)))
end
def subscribed_to_streaming_api?
redis.exists?("subscribed:timeline:#{@recipient.id}") || redis.exists?("subscribed:timeline:#{@recipient.id}:notifications")
end
def push_to_conversation!
AccountConversation.add_status(@recipient, @notification.target_status)
end
def push_to_web_push_subscriptions!
::Web::PushNotificationWorker.push_bulk(web_push_subscriptions.select { |subscription| subscription.pushable?(@notification) }) { |subscription| [subscription.id, @notification.id] }
end
def web_push_subscriptions
@web_push_subscriptions ||= ::Web::PushSubscription.where(user_id: @recipient.user.id).to_a
end
def subscribed_to_web_push?
web_push_subscriptions.any?
end
def send_email!
NotificationMailer.public_send(@notification.type, @recipient, @notification).deliver_later(wait: 2.minutes) if NotificationMailer.respond_to?(@notification.type)
end
def email_needed?
(!recipient_online? || always_send_emails?) && send_email_for_notification_type?
end
def recipient_online?
subscribed_to_streaming_api? || subscribed_to_web_push?
end
def always_send_emails?
@recipient.user.settings.always_send_emails
end
def send_email_for_notification_type?
@recipient.user.settings.notification_emails[@notification.type.to_s]
end
end
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