DELIMITER $$
CREATE OR REPLACE DEFINER=`root`@`localhost` PROCEDURE `srt`.`expedition_moving`(vBufferFk INT)
BEGIN
	
	/**
	 * Una expedición ha entrado en el celuveyor desde un buffer
	 *
	 * @param vBufferFk Identificador de srt.buffer
	 * 
	 */
	
	DECLARE vExpeditionFk INT;
	DECLARE vPosition INT;

	SELECT min(`position`) INTO vPosition
		FROM srt.expedition e
		WHERE e.bufferFk = vBufferFk;
	
	SELECT e.id INTO vExpeditionFk
		FROM srt.expedition e 
		WHERE e.`position` = vPosition
			AND e.bufferFk = vBufferFk
	LIMIT 1;

	INSERT INTO srt.expeditionLog (expeditionFk, bufferFk, `action`)
		VALUES(vExpeditionFk, vBufferFk, 'MOV');
	
	UPDATE srt.expedition e
		JOIN srt.expeditionState es on es.description = 'MOVING'
		JOIN srt.moving m ON m.expeditionFk = e.id
		SET e.stateFk = es.id,
			e.bufferFk = m.bufferToFk,
			e.`position` = 0
		WHERE e.id = vExpeditionFk;
		
	SET @posicion := 0;

	UPDATE srt.expedition e 
		SET e.`position` = @posicion := @posicion + 1
		WHERE e.bufferFk = vBufferFk
			AND e.id != vExpeditionFk
		ORDER BY e.`position`;
	
	CALL srt.buffer_setStateType(vBufferFk, 'FREE', NULL);

END$$
DELIMITER ;