63 lines
2.2 KiB
Ruby
63 lines
2.2 KiB
Ruby
# frozen_string_literal: true
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class UserGroupNotificationSettingsFinder
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def initialize(user, groups)
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@user = user
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@groups = groups
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end
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def execute
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groups_with_ancestors = groups.self_and_ancestors
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@loaded_groups_with_ancestors = groups_with_ancestors.index_by(&:id)
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@loaded_notification_settings = user.notification_settings_for_groups(groups_with_ancestors).preload_source_route.index_by(&:source_id)
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preload_emails_disabled
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groups.map do |group|
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find_notification_setting_for(group)
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end
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end
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private
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attr_reader :user, :groups, :loaded_groups_with_ancestors, :loaded_notification_settings
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def find_notification_setting_for(group)
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return loaded_notification_settings[group.id] if loaded_notification_settings[group.id]
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return user.notification_settings.build(source: group) if group.parent_id.nil?
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parent_setting = loaded_notification_settings[group.parent_id]
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return user.notification_settings.build(source: group) unless parent_setting
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if should_copy?(parent_setting)
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user.notification_settings.build(source: group) do |ns|
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ns.assign_attributes(parent_setting.slice(*NotificationSetting.allowed_fields))
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end
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else
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find_notification_setting_for(loaded_groups_with_ancestors[group.parent_id])
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end
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end
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def should_copy?(parent_setting)
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return false unless parent_setting
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parent_setting.level != NotificationSetting.levels[:global] || parent_setting.notification_email.present?
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end
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# This method preloads the `emails_disabled` strong memoized method for the given groups.
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#
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# For each group, look up the ancestor hierarchy and look for any group where emails_disabled is true.
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# The lookup is implemented with an EXISTS subquery, so we can look up the ancestor chain for each group individually.
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# The query will return groups where at least one ancestor has the `emails_disabled` set to true.
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#
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# After the query, we set the instance variable.
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def preload_emails_disabled
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group_ids_with_disabled_email = Group.ids_with_disabled_email(groups.to_a)
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groups.each do |group|
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group.emails_disabled_memoized = group_ids_with_disabled_email.include?(group.id) if group.parent_id
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end
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end
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end
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