DELIMITER $$
CREATE OR REPLACE DEFINER=`root`@`localhost` PROCEDURE `vn`.`workerTimeControl_direction`(vWorkerFk VARCHAR(10), vTimed DATETIME)
BEGIN
/**
 * Devuelve que direcciones de fichadas son lógicas a partir de la anterior fichada
 * @param vWorkerFk Identificador del trabajador
 * @return (option1, option2)
 * Los valores posibles de retorno son ('in', 'inMiddle', 'outMiddle', 'out') 		
 */
	DECLARE vLastIn DATETIME ;
	DECLARE vIsMiddleOdd BOOLEAN ;

	IF (vTimed IS NULL) THEN 
		SET vTimed = util.VN_NOW();
	END IF;
	
	SELECT timed INTO vLastIn
		FROM workerTimeControl 
		WHERE userFk = vWorkerFk
			AND direction = 'in' 
			AND timed < vTimed
		ORDER BY timed DESC
		LIMIT 1;
	
	SELECT (COUNT(*)mod 2 = 1) INTO vIsMiddleOdd
		FROM workerTimeControl 
		WHERE userFk = vWorkerFk
			AND direction = 'middle' 
			AND timed BETWEEN vLastIn AND util.VN_NOW();

	DROP TEMPORARY TABLE IF EXISTS tmp.workerTimeControlDirection;
	CREATE TEMPORARY TABLE tmp.workerTimeControlDirection
		SELECT IF(isCorrect, option1, NULL) option1,
				IF(isCorrect, option2, NULL) option2
			FROM( SELECT IF(w.direction <> 'out' AND (UNIX_TIMESTAMP(vTimed) - UNIX_TIMESTAMP(w.timed) > wc.dayBreak), FALSE, TRUE) isCorrect,
						CASE WHEN w.direction ='in' THEN 'inMiddle'
							WHEN w.direction = 'out' THEN 'in'
							WHEN w.direction = 'middle' AND vIsMiddleOdd THEN 'outMiddle'
							WHEN w.direction IS NULL THEN 'in'
							ELSE 'inMiddle'
						END option1,
						CASE WHEN w.direction ='in' THEN 'out'
							WHEN w.direction = 'out' THEN NULL
							WHEN w.direction = 'middle' AND vIsMiddleOdd THEN NULL
							WHEN w.direction IS NULL THEN NULL
							ELSE 'out'
						END option2
					FROM workerTimeControl w
						JOIN workerTimeControlConfig wc ON TRUE
					WHERE w.timed <= vTimed
						AND w.userFk = vWorkerFk
					ORDER BY w.timed DESC
					LIMIT 1)sub;

	IF (SELECT IF(COUNT(*)=0, TRUE, FALSE) FROM tmp.workerTimeControlDirection ) THEN
		INSERT INTO tmp.workerTimeControlDirection (option1, option2)
			VALUES('in', NULL);
	END IF;

END$$
DELIMITER ;