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# frozen_string_literal: true
module Groups
class TransferService < Groups::BaseService
ERROR_MESSAGES = {
database_not_supported: s_('TransferGroup|Database is not supported.'),
namespace_with_same_path: s_('TransferGroup|The parent group already has a subgroup with the same path.'),
group_is_already_root: s_('TransferGroup|Group is already a root group.'),
same_parent_as_current: s_('TransferGroup|Group is already associated to the parent group.'),
invalid_policies: s_("TransferGroup|You don't have enough permissions.")
}.freeze
TransferError = Class.new(StandardError)
attr_reader :error
def initialize(group, user, params = {})
super
@error = nil
end
def execute(new_parent_group)
@new_parent_group = new_parent_group
ensure_allowed_transfer
proceed_to_transfer
rescue TransferError, ActiveRecord::RecordInvalid, Gitlab::UpdatePathError => e
@group.errors.clear
@error = s_("TransferGroup|Transfer failed: %{error_message}") % { error_message: e.message }
false
end
private
def proceed_to_transfer
Group.transaction do
update_group_attributes
ensure_ownership
end
true
end
def ensure_allowed_transfer
raise_transfer_error(:group_is_already_root) if group_is_already_root?
raise_transfer_error(:database_not_supported) unless Group.supports_nested_objects?
raise_transfer_error(:same_parent_as_current) if same_parent?
raise_transfer_error(:invalid_policies) unless valid_policies?
raise_transfer_error(:namespace_with_same_path) if namespace_with_same_path?
end
def group_is_already_root?
!@new_parent_group && !@group.has_parent?
end
def same_parent?
@new_parent_group && @new_parent_group.id == @group.parent_id
end
def valid_policies?
return false unless can?(current_user, :admin_group, @group)
if @new_parent_group
can?(current_user, :create_subgroup, @new_parent_group)
else
can?(current_user, :create_group)
end
end
# rubocop: disable CodeReuse/ActiveRecord
def namespace_with_same_path?
Namespace.exists?(path: @group.path, parent: @new_parent_group)
end
# rubocop: enable CodeReuse/ActiveRecord
def update_group_attributes
if @new_parent_group && @new_parent_group.visibility_level < @group.visibility_level
update_children_and_projects_visibility
@group.visibility_level = @new_parent_group.visibility_level
end
@group.parent = @new_parent_group
@group.save!
end
# rubocop: disable CodeReuse/ActiveRecord
def update_children_and_projects_visibility
descendants = @group.descendants.where("visibility_level > ?", @new_parent_group.visibility_level)
Group
.where(id: descendants.select(:id))
.update_all(visibility_level: @new_parent_group.visibility_level)
@group
.all_projects
.where("visibility_level > ?", @new_parent_group.visibility_level)
.update_all(visibility_level: @new_parent_group.visibility_level)
end
# rubocop: enable CodeReuse/ActiveRecord
def ensure_ownership
return if @new_parent_group
return unless @group.owners.empty?
@group.add_owner(current_user)
end
def raise_transfer_error(message)
raise TransferError, ERROR_MESSAGES[message]
end
end
end
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