DELIMITER $$
CREATE OR REPLACE DEFINER=`vn`@`localhost` PROCEDURE `vn`.`entry_splitByShelving`(
	vShelvingCode VARCHAR(10),
	vFromEntryFk INT,
	vToEntryFk INT
)
BEGIN
/**
 * Divide las compras entre dos entradas de
 * acuerdo con lo ubicado en una matricula.
 * 
 * @param vShelvingCode Código de vn.shelving
 * @param vFromEntryFk Entrada origen
 * @param vToEntryFk Entrada destino
 */
	DECLARE vBuyFk INT;
	DECLARE vIshStickers INT;
	DECLARE vBuyStickers INT;
	DECLARE vDone BOOLEAN DEFAULT FALSE;

	DECLARE cur CURSOR FOR
		SELECT bb.id buyFk,
				LEAST(bb.stickers, FLOOR(ish.visible / ish.packing)) ishStickers,
				bb.stickers buyStickers
			FROM itemShelving ish
				JOIN (SELECT b.id, b.itemFk, b.stickers 
						FROM buy b
						WHERE b.entryFk = vFromEntryFk
						ORDER BY b.stickers DESC
						LIMIT 10000000000000000000) bb ON bb.itemFk = ish.itemFk
			WHERE ish.shelvingFk = vShelvingCode COLLATE utf8_general_ci
				AND NOT ish.isSplit
			GROUP BY ish.id;
			
	DECLARE CONTINUE HANDLER FOR NOT FOUND SET vDone = TRUE;

	OPEN cur;

	read_loop: LOOP
		SET vDone = FALSE;
	
		FETCH cur INTO vBuyFk, vIshStickers, vBuyStickers;

		IF vDone THEN
			LEAVE read_loop;
		END IF;

		IF vIshStickers =  vBuyStickers THEN
			UPDATE buy
				SET entryFk = vToEntryFk
				WHERE id = vBuyFk;
		ELSE
			UPDATE buy
				SET stickers = stickers - vIshStickers,
					quantity = stickers * packing 
				WHERE id = vBuyFk;

			INSERT INTO	buy(entryFk,
								itemFk,
								quantity,
								buyingValue,
								freightValue,
								isIgnored,
								stickers,
								packing,
								`grouping`,
								groupingMode,
								comissionValue,
								packageValue,
								location,
								packagingFk,
								price1,
								price2,
								price3,
								minPrice,
								workerFk,
								isChecked,
								isPickedOff,
								ektFk,
								weight,
								deliveryFk,
								itemOriginalFk)
					SELECT
							vToEntryFk,
							itemFk,
							vIshStickers * packing,
							buyingValue,
							freightValue,
							isIgnored,
							vIshStickers,
							packing,
							`grouping`,
							groupingMode,
							comissionValue,
							packageValue,
							location,
							packagingFk,
							price1,
							price2,
							price3,
							minPrice,
							workerFk,
							isChecked,
							isPickedOff,
							ektFk,
							weight,
							deliveryFk,
							itemOriginalFk
						FROM buy
						WHERE id = vBuyFk;

			UPDATE buy SET printedStickers = vIshStickers WHERE id = LAST_INSERT_ID();
		END IF;

		UPDATE itemShelving ish
				JOIN shelving sh ON sh.id = ish.shelvingFk
			SET ish.isSplit = TRUE
			WHERE sh.code = vShelvingCode COLLATE utf8_general_ci;
	END LOOP;
	CLOSE cur;
END$$
DELIMITER ;