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# frozen_string_literal: true
# Labels::TransferService class
#
# User for recreate the missing group labels at project level
#
module Labels
class TransferService
def initialize(current_user, old_group, project)
@current_user = current_user
@old_group = old_group
@project = project
end
def execute
return unless old_group.present?
# rubocop: disable CodeReuse/ActiveRecord
link_ids = group_labels_applied_to_issues.pluck("label_links.id") +
group_labels_applied_to_merge_requests.pluck("label_links.id")
# rubocop: disable CodeReuse/ActiveRecord
Label.transaction do
labels_to_transfer.find_each do |label|
new_label_id = find_or_create_label!(label)
next if new_label_id == label.id
update_label_links(link_ids, old_label_id: label.id, new_label_id: new_label_id)
update_label_priorities(old_label_id: label.id, new_label_id: new_label_id)
end
end
end
private
attr_reader :current_user, :old_group, :project
# rubocop: disable CodeReuse/ActiveRecord
def labels_to_transfer
Label
.from_union([
group_labels_applied_to_issues,
group_labels_applied_to_merge_requests
])
.reorder(nil)
.distinct
end
# rubocop: enable CodeReuse/ActiveRecord
# rubocop: disable CodeReuse/ActiveRecord
def group_labels_applied_to_issues
@labels_applied_to_issues ||= Label.joins(:issues)
.joins("INNER JOIN namespaces on namespaces.id = labels.group_id AND namespaces.type = 'Group'" )
.where(issues: { project_id: project.id }).reorder(nil)
end
# rubocop: enable CodeReuse/ActiveRecord
# rubocop: disable CodeReuse/ActiveRecord
def group_labels_applied_to_merge_requests
@labels_applied_to_mrs ||= Label.joins(:merge_requests)
.joins("INNER JOIN namespaces on namespaces.id = labels.group_id AND namespaces.type = 'Group'" )
.where(merge_requests: { target_project_id: project.id }).reorder(nil)
end
# rubocop: enable CodeReuse/ActiveRecord
def find_or_create_label!(label)
params = label.attributes.slice('title', 'description', 'color')
new_label = FindOrCreateService.new(current_user, project, params.merge(include_ancestor_groups: true)).execute
new_label.id
end
# rubocop: disable CodeReuse/ActiveRecord
def update_label_links(link_ids, old_label_id:, new_label_id:)
LabelLink.where(id: link_ids, label_id: old_label_id)
.update_all(label_id: new_label_id)
end
# rubocop: enable CodeReuse/ActiveRecord
# rubocop: disable CodeReuse/ActiveRecord
def update_label_priorities(old_label_id:, new_label_id:)
LabelPriority.where(project_id: project.id, label_id: old_label_id)
.update_all(label_id: new_label_id)
end
# rubocop: enable CodeReuse/ActiveRecord
end
end
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