DO $$
DECLARE
	_path  character varying(256) := 'patch-2026_02_20-ProjectTaskCostraints.sql';
	_build integer := 16615;
BEGIN
	IF EXISTS (SELECT 1 FROM public."Versions" WHERE "Path" = _path) THEN
		RETURN;
	END IF;

	IF EXISTS (SELECT 1 FROM public."Versions" WHERE "Build" >= _build) THEN
		RETURN;
	END IF;

	BEGIN

		UPDATE public."ProjectTasks" SET "ParentId" = NULL WHERE "ParentId" = "Id";
		
		ALTER TABLE public."ProjectTasks" ADD CONSTRAINT "ProjectTasks-ParentId" CHECK ("ParentId" <> "Id");

		INSERT INTO public."Versions" ("Path", "Build") VALUES (_path, 0);

	EXCEPTION
		WHEN OTHERS THEN
			RAISE NOTICE '[ERR] %: %', _path, SQLERRM;
	END;
END;
$$;
