DROP PROCEDURE IF EXISTS `vn`.`ticket_doRefund`;

DELIMITER $$
$$
CREATE DEFINER=`root`@`localhost` PROCEDURE `vn`.`ticket_doRefund`(IN vOriginTicket INT, OUT vNewTicket INT)
BEGIN
	
	DECLARE vDone BIT DEFAULT 0;
	DECLARE vCustomer MEDIUMINT;
	DECLARE vWarehouse TINYINT;
	DECLARE vCompany MEDIUMINT;
	DECLARE vAddress MEDIUMINT;
    DECLARE vRefundAgencyMode INT;
    DECLARE vItemFk INT;
    DECLARE vQuantity DECIMAL (10,2);
    DECLARE vConcept VARCHAR(50);
    DECLARE vPrice DECIMAL (10,2);
    DECLARE vDiscount TINYINT;
	DECLARE vSaleNew INT;
    DECLARE vSaleMain INT;
    DECLARE vZoneFk INT;
    
    DECLARE vRsMainTicket CURSOR FOR
		SELECT *
			FROM tmp.sale;
    
    DECLARE CONTINUE HANDLER FOR NOT FOUND SET vDone = 1;
	
    SELECT id INTO vRefundAgencyMode
		FROM agencyMode WHERE `name` = 'ABONO';

	SELECT clientFk, warehouseFk, companyFk, addressFk 
			INTO vCustomer, vWarehouse, vCompany, vAddress
		FROM ticket 
        WHERE id = vOriginTicket;
    
    SELECT id INTO vZoneFk 
		FROM zone WHERE agencyModeFk = vRefundAgencyMode
        LIMIT 1;
        
	INSERT INTO vn.ticket (
			clientFk,
			shipped,
			addressFk,
			agencyModeFk,
			nickname,
			warehouseFk,
			companyFk,
			landed,
            zoneFk
		)
		SELECT
					vCustomer,
					CURDATE(),
					vAddress,
					vRefundAgencyMode,
					a.nickname,
					vWarehouse,
					vCompany,
					CURDATE(),
                    vZoneFk
			FROM address a
			WHERE a.id = vAddress;

	SET vNewTicket = LAST_INSERT_ID();

	SET vDone := 0;	
	OPEN vRsMainTicket ;
    FETCH vRsMainTicket INTO vSaleMain, vItemFk, vQuantity, vConcept, vPrice, vDiscount;

	WHILE NOT vDone DO
    
		INSERT INTO vn.sale(ticketFk, itemFk, quantity, concept, price, discount)
			VALUES( vNewTicket, vItemFk, vQuantity, vConcept, vPrice, vDiscount );
            
        SET vSaleNew = LAST_INSERT_ID();
        
        INSERT INTO vn.saleComponent(saleFk,componentFk,`value`) 
        SELECT vSaleNew,componentFk,`value`  
			FROM vn.saleComponent 
            WHERE saleFk = vSaleMain;
        
		FETCH vRsMainTicket INTO vSaleMain, vItemFk, vQuantity, vConcept, vPrice, vDiscount;
        
	END WHILE;
	CLOSE vRsMainTicket;

	INSERT INTO vn.ticketRefund(refundTicketFk, originalTicketFk)
		VALUES(vNewTicket, vOriginTicket);

END$$
DELIMITER ;

CREATE TABLE `vn`.`ticketRefund` (
	`id` INT auto_increment NULL,
	`refundTicketFk` INT NOT NULL,
	`originalTicketFk` INT NOT NULL,
	CONSTRAINT `ticketRefund_PK` PRIMARY KEY (id)
)
ENGINE=InnoDB
DEFAULT CHARSET=utf8
COLLATE=utf8_unicode_ci;

ALTER TABLE `vn`.`ticketRefund` ADD CONSTRAINT `ticketRefund_FK` FOREIGN KEY (`refundTicketFk`) REFERENCES `vn`.`ticket`(`id`) ON DELETE RESTRICT ON UPDATE CASCADE;
ALTER TABLE `vn`.`ticketRefund` ADD CONSTRAINT `ticketRefund_FK_1` FOREIGN KEY (`originalTicketFk`) REFERENCES `vn`.`ticket`(`id`) ON DELETE RESTRICT ON UPDATE CASCADE;

DELIMITER $$
$$
CREATE DEFINER=`root`@`localhost` TRIGGER `vn`.`ticketRefund_beforeInsert`
	BEFORE INSERT ON `ticketRefund`
	FOR EACH ROW
BEGIN
	DECLARE vAlreadyExists BOOLEAN DEFAULT FALSE; 

	IF NEW.refundTicketFk = NEW.originalTicketFk THEN
		CALL util.throw('Original ticket and refund ticket has same id');
	END IF;

    SELECT COUNT(*) INTO vAlreadyExists
		FROM ticketRefund 
		WHERE refundTicketFk = NEW.originalTicketFk;
	
	IF vAlreadyExists > 0 THEN
		CALL util.throw('This ticket is already a refund');
	END IF;
END$$
DELIMITER ;

DELIMITER $$
$$
CREATE DEFINER=`root`@`localhost` TRIGGER `vn`.`ticketRefund_beforeUpdate`
	BEFORE UPDATE ON `ticketRefund`
	FOR EACH ROW
BEGIN
	DECLARE vAlreadyExists BOOLEAN DEFAULT FALSE; 

	IF NEW.refundTicketFk = NEW.originalTicketFk THEN
		CALL util.throw('Original ticket and refund ticket has same id');
	END IF;

    SELECT COUNT(*) INTO vAlreadyExists
		FROM ticketRefund 
		WHERE refundTicketFk = NEW.originalTicketFk;
	
	IF vAlreadyExists > 0 THEN
		CALL util.throw('This ticket is already a refund');
	END IF;
END$$
DELIMITER ;