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# frozen_string_literal: true
module Labels
class PromoteService < BaseService
BATCH_SIZE = 1000
# rubocop: disable CodeReuse/ActiveRecord
def execute(label)
return unless project.group &&
label.is_a?(ProjectLabel)
Label.transaction do
# use the existing group label if it exists
group_label = find_or_create_group_label(label)
label_ids_for_merge(group_label).find_in_batches(batch_size: BATCH_SIZE) do |batched_ids|
update_old_label_relations(group_label, batched_ids)
destroy_project_labels(batched_ids)
end
group_label
end
end
# rubocop: enable CodeReuse/ActiveRecord
private
def update_old_label_relations(group_label, old_label_ids)
update_issuables(group_label, old_label_ids)
update_resource_label_events(group_label, old_label_ids)
update_issue_board_lists(group_label, old_label_ids)
update_priorities(group_label, old_label_ids)
subscribe_users(group_label, old_label_ids)
end
# rubocop: disable CodeReuse/ActiveRecord
def subscribe_users(group_label, label_ids)
# users can be subscribed to multiple labels that will be merged into the group one
# we want to keep only one subscription / user
ids_to_update = Subscription.where(subscribable_id: label_ids, subscribable_type: 'Label')
.group(:user_id)
.pluck('MAX(id)')
Subscription.where(id: ids_to_update).update_all(subscribable_id: group_label.id)
end
# rubocop: enable CodeReuse/ActiveRecord
# rubocop: disable CodeReuse/ActiveRecord
def label_ids_for_merge(group_label)
LabelsFinder
.new(current_user, title: group_label.title, group_id: project.group.id)
.execute(skip_authorization: true)
.where.not(id: group_label)
.select(:id) # Can't use pluck() to avoid object-creation because of the batching
end
# rubocop: enable CodeReuse/ActiveRecord
# rubocop: disable CodeReuse/ActiveRecord
def update_issuables(group_label, label_ids)
LabelLink
.where(label: label_ids)
.update_all(label_id: group_label.id)
end
# rubocop: enable CodeReuse/ActiveRecord
# rubocop: disable CodeReuse/ActiveRecord
def update_resource_label_events(group_label, label_ids)
ResourceLabelEvent
.where(label: label_ids)
.update_all(label_id: group_label.id)
end
# rubocop: enable CodeReuse/ActiveRecord
# rubocop: disable CodeReuse/ActiveRecord
def update_issue_board_lists(group_label, label_ids)
List
.where(label: label_ids)
.update_all(label_id: group_label.id)
end
# rubocop: enable CodeReuse/ActiveRecord
# rubocop: disable CodeReuse/ActiveRecord
def update_priorities(group_label, label_ids)
LabelPriority
.where(label: label_ids)
.update_all(label_id: group_label.id)
end
# rubocop: enable CodeReuse/ActiveRecord
# rubocop: disable CodeReuse/ActiveRecord
def destroy_project_labels(label_ids)
Label.where(id: label_ids).destroy_all # rubocop: disable Cop/DestroyAll
end
def find_or_create_group_label(label)
params = label.attributes.slice('title', 'description', 'color')
new_label = GroupLabel.create_with(params).find_or_initialize_by(group_id: project.group.id, title: label.title)
new_label.save! unless new_label.persisted?
new_label
end
end
end
Labels::PromoteService.prepend_if_ee('EE::Labels::PromoteService')
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