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# frozen_string_literal: true
class NotificationRecipient
include Gitlab::Utils::StrongMemoize
attr_reader :user, :type, :reason
def initialize(user, type, **opts)
unless NotificationSetting.levels.key?(type) || type == :subscription
raise ArgumentError, "invalid type: #{type.inspect}"
end
@custom_action = opts[:custom_action]
@acting_user = opts[:acting_user]
@target = opts[:target]
@project = opts[:project] || default_project
@group = opts[:group] || @project&.group
@user = user
@type = type
@reason = opts[:reason]
@skip_read_ability = opts[:skip_read_ability]
end
def notification_setting
@notification_setting ||= find_notification_setting
end
def notification_level
@notification_level ||= notification_setting&.level&.to_sym
end
def notifiable?
return false unless has_access?
return false if emails_disabled?
return false if own_activity?
# even users with :disabled notifications receive manual subscriptions
return !unsubscribed? if @type == :subscription
return false unless suitable_notification_level?
# check this last because it's expensive
# nobody should receive notifications if they've specifically unsubscribed
# except if they were mentioned.
return false if @type != :mention && unsubscribed?
true
end
def suitable_notification_level?
case notification_level
when :mention
@type == :mention
when :participating
%i[failed_pipeline fixed_pipeline].include?(@custom_action) ||
%i[participating mention].include?(@type)
when :custom
custom_enabled? || %i[participating mention].include?(@type)
when :watch
!excluded_watcher_action?
else
false
end
end
def custom_enabled?
return false unless @custom_action
return false unless notification_setting
notification_setting.event_enabled?(@custom_action) ||
# fixed_pipeline is a subset of success_pipeline event
(@custom_action == :fixed_pipeline &&
notification_setting.event_enabled?(:success_pipeline))
end
def unsubscribed?
subscribable_target = @target.is_a?(Note) ? @target.noteable : @target
return false unless subscribable_target
return false unless subscribable_target.respond_to?(:subscriptions)
subscription = subscribable_target.subscriptions.find { |subscription| subscription.user_id == @user.id }
subscription && !subscription.subscribed
end
def own_activity?
return false unless @acting_user
if user == @acting_user
# if activity was generated by the same user, change reason to :own_activity
@reason = NotificationReason::OWN_ACTIVITY
# If the user wants to be notified, we must return `false`
!@acting_user.notified_of_own_activity?
else
false
end
end
def has_access?
DeclarativePolicy.subject_scope do
break false unless user.can?(:receive_notifications)
break true if @skip_read_ability
break false if @target && !user.can?(:read_cross_project)
break false if @project && !user.can?(:read_project, @project)
break true unless read_ability
break true unless DeclarativePolicy.has_policy?(@target)
user.can?(read_ability, @target)
end
end
def excluded_watcher_action?
return false unless @type == :watch
return false unless @custom_action
NotificationSetting::EXCLUDED_WATCHER_EVENTS.include?(@custom_action)
end
private
# They are disabled if the project or group has disallowed it.
# No need to check the group if there is already a project
def emails_disabled?
@project ? @project.emails_disabled? : @group&.emails_disabled?
end
def read_ability
return if @skip_read_ability
return @read_ability if instance_variable_defined?(:@read_ability)
@read_ability =
if @target.is_a?(Ci::Pipeline)
:read_build # We have build trace in pipeline emails
elsif default_ability_for_target
:"read_#{default_ability_for_target}"
end
end
def default_ability_for_target
@default_ability_for_target ||=
if @target.respond_to?(:to_ability_name)
@target.to_ability_name
elsif @target.class.respond_to?(:model_name)
@target.class.model_name.name.underscore
end
end
def default_project
return if @target.nil?
return @target if @target.is_a?(Project)
return @target.project if @target.respond_to?(:project)
end
def find_notification_setting
project_setting = @project && user.notification_settings_for(@project)
return project_setting unless project_setting.nil? || project_setting.global?
group_setting = closest_non_global_group_notification_setting
return group_setting unless group_setting.nil?
user.global_notification_setting
end
# Returns the notification_setting of the lowest group in hierarchy with non global level
def closest_non_global_group_notification_setting
return unless @group
@group
.notification_settings(hierarchy_order: :asc)
.where(user: user)
.where.not(level: NotificationSetting.levels[:global])
.first
end
end
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