DELIMITER $$
CREATE OR REPLACE DEFINER=`root`@`localhost` PROCEDURE `vn`.`item_getBalance`(
	vItemFk INT,
	vWarehouseFk INT,
	vDate DATETIME
)
BEGIN
/**
 * @vItemFk item a buscar
 * @vWarehouseFk almacen donde buscar
 * @vDate Si la fecha es null, muestra el histórico desde el inventario. 
 * Si la fecha no es null, muestra histórico desde la fecha pasada.
 */
	DECLARE vDateInventory DATETIME;

	IF vDate IS NULL THEN
		SELECT inventoried INTO vDateInventory 
			FROM config;
	ELSE
		SELECT mockUtcTime INTO vDateInventory
			FROM util.config;
	END IF;

	CREATE OR REPLACE TEMPORARY TABLE tItemDiary(
		shipped DATE,
		`in` INT(11),
		`out` INT(11),
		alertLevel INT(11),
		stateName VARCHAR(20),
		`name` VARCHAR(50),
		reference VARCHAR(50),
		origin INT(11),
		clientFk INT(11),
		isPicked INT(11),
		isTicket TINYINT(1),
		lineFk INT(11),
		`order` TINYINT(3) UNSIGNED,
		clientType VARCHAR(20),
		claimFk INT(10) UNSIGNED,
		inventorySupplierFk INT(10)
	);

	INSERT INTO tItemDiary 
		SELECT tr.landed shipped,
				b.quantity `in`,
				NULL `out`,
				st.alertLevel ,
				st.name stateName,
				s.name `name`,
				e.invoiceNumber reference,
				e.id origin,
				s.id clientFk,
				IF(st.`code` = 'DELIVERED', TRUE, FALSE) isPicked,
				FALSE isTicket,
				b.id lineFk,
				NULL `order`,
				NULL clientType,
				NULL claimFk,
				ec.inventorySupplierFk
			FROM buy b
				JOIN entry e ON e.id = b.entryFk
				JOIN travel tr ON tr.id = e.travelFk
				JOIN supplier s ON s.id = e.supplierFk
				JOIN state st ON st.`code` = IF( tr.landed < util.VN_CURDATE() 
					OR (util.VN_CURDATE() AND tr.isReceived),
						'DELIVERED', 
						'FREE')
				JOIN entryConfig ec
			WHERE tr.landed >= vDateInventory
				AND vWarehouseFk = tr.warehouseInFk
				AND (s.id <> ec.inventorySupplierFk OR vDate IS NULL) 
				AND b.itemFk = vItemFk
				AND e.isExcludedFromAvailable = FALSE
				AND e.isRaid = FALSE
		UNION ALL
		SELECT tr.shipped,
				NULL,
				b.quantity,
				st.alertLevel,
				st.name,
				s.name,
				e.invoiceNumber,
				e.id,
				s.id,
				IF(st.`code` = 'DELIVERED' , TRUE, FALSE),
				FALSE,
				b.id,
				NULL,
				NULL,
				NULL,
				ec.inventorySupplierFk
			FROM buy b
				JOIN entry e ON e.id = b.entryFk
				JOIN travel tr ON tr.id = e.travelFk
				JOIN warehouse w ON w.id = tr.warehouseOutFk
				JOIN supplier s ON s.id = e.supplierFk
				JOIN state st ON st.`code` = IF(tr.shipped < util.VN_CURDATE() 
						OR (tr.shipped = util.VN_CURDATE() AND tr.isReceived),
					'DELIVERED', 
					'FREE')
				JOIN entryConfig ec
			WHERE tr.shipped >= vDateInventory
				AND vWarehouseFk = tr.warehouseOutFk
				AND (s.id <> ec.inventorySupplierFk OR vDate IS NULL) 
				AND b.itemFk = vItemFk
				AND e.isExcludedFromAvailable = FALSE
				AND w.isFeedStock = FALSE
				AND e.isRaid = FALSE
		UNION ALL
		SELECT DATE(t.shipped),
			NULL,
			s.quantity,
			st2.alertLevel,
			st2.name,
			t.nickname,
			t.refFk,
			t.id,
			t.clientFk,
			stk.id,
			TRUE,
			s.id,
			st.`order`,
			ct.`code`,
			cb.claimFk,
			NULL
		FROM sale s
			JOIN ticket t ON t.id = s.ticketFk
			LEFT JOIN ticketState ts ON ts.ticketFk = t.id
			LEFT JOIN state st ON st.`code` = ts.`code`
			JOIN client c ON c.id = t.clientFk
			JOIN clientType ct ON ct.id = c.clientTypeFk
			JOIN state st2 ON st2.`code` = IF(t.shipped < util.VN_CURDATE(),
				'DELIVERED', 
				IF (t.shipped > util.dayEnd(util.VN_CURDATE()),
					'FREE',
					IFNULL(ts.code, 'FREE')))
			LEFT JOIN state stPrep ON stPrep.`code` = 'PREPARED'
			LEFT JOIN saleTracking stk ON stk.saleFk = s.id 
				AND stk.stateFk = stPrep.id
			LEFT JOIN claimBeginning cb ON s.id = cb.saleFk
		WHERE t.shipped >= vDateInventory
			AND s.itemFk = vItemFk
			AND vWarehouseFk =t.warehouseFk
		ORDER BY shipped,
			(inventorySupplierFk = clientFk) DESC,
			alertLevel DESC,
			isTicket,
			`order` DESC,
			isPicked DESC,
			`in` DESC,
			`out` DESC;

	IF vDate IS NULL THEN
	
		SET @a := 0;
		SET @currentLineFk := 0;
		SET @shipped := '';

		SELECT DATE(@shipped:= shipped) shipped,
			alertLevel,
			stateName,
			origin,
			reference,
			clientFk,
			name,
			`in` invalue,
			`out`,
			@a := @a + IFNULL(`in`, 0) - IFNULL(`out`, 0) balance,
			@currentLineFk := IF (@shipped < util.VN_CURDATE() 
								OR (@shipped = util.VN_CURDATE() AND (isPicked OR a.`code` >= 'ON_PREPARATION')),
									lineFk, 
									@currentLineFk) lastPreparedLineFk,
			isTicket,
			lineFk,
			isPicked,
			clientType,
			claimFk
			FROM tItemDiary
				LEFT JOIN alertLevel a ON a.id = tItemDiary.alertLevel;

	ELSE
		SELECT SUM(`in`) - SUM(`out`) INTO @a
			FROM tItemDiary
			WHERE shipped < vDate;

		SELECT vDate shipped,
			0 alertLevel,
			0 stateName,
			0 origin,
			'' reference,
			0 clientFk,
			'Inventario calculado',
			@a invalue,
			NULL `out`,
			@a balance,
			0 lastPreparedLineFk,
			0 isTicket,
			0 lineFk,
			0 isPicked,
			0 clientType,
			0 claimFk
		UNION ALL
		SELECT shipped, 
				alertlevel, 
				stateName, 
				origin, 
				reference, 
				clientFk, 
				name, `in`, 
				`out`, 
				@a := @a + IFNULL(`in`, 0) - IFNULL(`out`, 0), 
				0, 
				isTicket, 
				lineFk, 
				isPicked, 
				clientType, 
				claimFk
			FROM tItemDiary
				WHERE shipped >= vDate;
	END IF;
	
	DROP TEMPORARY TABLE tItemDiary;
END$$
DELIMITER ;