DELIMITER $$
CREATE OR REPLACE DEFINER=`root`@`localhost` PROCEDURE `vn`.`item_getMinacum`(IN vWarehouseFk TINYINT, IN vDatedFrom DATETIME, IN vRange INT, IN vItemFk INT)
BEGIN
/**
 * Cálculo del mínimo acumulado, para un item/almacén especificado, en caso de
 * NULL para todo.
 *
 * @param vWarehouseFk -> warehouseFk
 * @param vDatedFrom -> fecha inicio
 * @param vRange -> número de días a considerar
 * @param vItemFk -> Identificador de item
 * @return tmp.itemMinacum
*/
	DECLARE vDatedTo DATETIME;

	SET vDatedFrom = TIMESTAMP(DATE(vDatedFrom), '00:00:00');
	SET vDatedTo = TIMESTAMP(TIMESTAMPADD(DAY, vRange, vDatedFrom), '23:59:59');

	DROP TEMPORARY TABLE IF EXISTS tmp.itemCalc;
	CREATE TEMPORARY TABLE tmp.itemCalc
		(INDEX (itemFk, warehouseFk))
		SELECT sub.itemFk,
				sub.dated,
				CAST(SUM(sub.quantity) AS SIGNED) quantity,
				sub.warehouseFk
			FROM (SELECT s.itemFk,
						DATE(t.shipped) dated,
						-s.quantity quantity,
						t.warehouseFk
					FROM sale s
						JOIN ticket t ON t.id = s.ticketFk
					WHERE t.shipped BETWEEN vDatedFrom AND vDatedTo
						AND t.warehouseFk
						AND s.quantity != 0
						AND (vItemFk IS NULL OR s.itemFk = vItemFk)
						AND (vWarehouseFk IS NULL OR t.warehouseFk = vWarehouseFk)
				UNION ALL
				SELECT b.itemFk,
						t.landed,
						b.quantity,
						t.warehouseInFk
					FROM buy b
						JOIN entry e ON e.id = b.entryFk
						JOIN travel t ON t.id = e.travelFk
					WHERE t.landed BETWEEN vDatedFrom AND vDatedTo
						AND (vWarehouseFk IS NULL OR t.warehouseInFk = vWarehouseFk)
						AND !e.isExcludedFromAvailable
						AND b.quantity != 0
						AND (vItemFk IS NULL OR b.itemFk = vItemFk)
				UNION ALL
				SELECT b.itemFk,
						t.shipped,
						-b.quantity,
						t.warehouseOutFk
					FROM buy b
						JOIN entry e ON e.id = b.entryFk
						JOIN travel t ON t.id = e.travelFk
					WHERE t.shipped BETWEEN vDatedFrom AND vDatedTo
						AND (vWarehouseFk IS NULL OR t.warehouseOutFk = vWarehouseFk)
						AND !e.isExcludedFromAvailable
						AND b.quantity != 0
						AND (vItemFk IS NULL OR b.itemFk = vItemFk)
						AND !e.isRaid
				) sub
			GROUP BY sub.itemFk, sub.warehouseFk, sub.dated;

	CALL item_getAtp(vDatedFrom);
	DROP TEMPORARY TABLE tmp.itemCalc;

	DROP TEMPORARY TABLE IF EXISTS tmp.itemMinacum;
	CREATE TEMPORARY TABLE tmp.itemMinacum
		(INDEX(itemFk))
		ENGINE = MEMORY
		SELECT i.itemFk,
				i.warehouseFk,
				i.quantity amount
			FROM tmp.itemAtp i
			HAVING amount != 0;

	DROP TEMPORARY TABLE tmp.itemAtp;
END$$
DELIMITER ;
