DROP function IF EXISTS `vn`.`clientGetMana`;

DELIMITER $$
CREATE DEFINER=`root`@`%` FUNCTION `vn`.`clientGetMana`(vClient INT) RETURNS decimal(10,2)
    DETERMINISTIC
BEGIN
/**
 * Devuelve el mana del cliente.
 *
 * @param vClient Id del cliente
 * @return Mana del cliente
 */
	DECLARE vMana DECIMAL(10,2);
	DECLARE vFromDated DATE;
    DECLARE vHasMana BOOLEAN;
	DECLARE vManaComponent INT;
	DECLARE vAutoManaComponent INT;
    DECLARE vManaBank INT;
    DECLARE vManaGreugeType INT;
    
    SELECT id INTO vManaGreugeType FROM greugeType WHERE code = 'mana';
    SELECT id INTO vManaBank FROM bank WHERE code = 'mana';
    SELECT id INTO vManaComponent FROM component WHERE code = 'mana';
    SELECT id INTO vAutoManaComponent FROM component WHERE code = 'autoMana';
    
	SELECT COUNT(*) INTO vHasMana
		FROM `client` c
		WHERE c.id = vClient AND c.typeFk = 'normal';
	
	IF NOT vHasMana THEN
		RETURN 0;
	END IF;
	
	SELECT max(dated) INTO vFromDated
	FROM clientManaCache;

	SELECT sum(mana) INTO vMana
		FROM 
			(
			SELECT mana
				FROM clientManaCache
				WHERE clientFk = vClient
				AND dated = vFromDated			
			UNION ALL
			SELECT s.quantity * value
				 FROM ticket t
					JOIN address a ON a.id = t.addressFk
					JOIN sale s on s.ticketFk = t.id
					JOIN saleComponent sc on sc.saleFk = s.id
						WHERE sc.componentFk IN (vManaComponent, vAutoManaComponent)
							AND t.shipped > vFromDated 
							AND t.shipped < TIMESTAMPADD(DAY,1,CURDATE())
							AND a.clientFk = vClient
			UNION ALL
			SELECT - amountPaid
				FROM receipt r
					JOIN `client` c ON c.id = r.clientFk
				WHERE r.bankFk = vManaBank
					AND r.payed > vFromDated
					AND r.payed <= CURDATE()
					AND c.id = vClient
			UNION ALL
			SELECT  g.amount
				FROM greuge g
					JOIN client c ON c.id = g.clientFk
				WHERE g.greugeTypeFk = vManaGreugeType
					AND g.shipped > vFromDated
					AND g.shipped <= CURDATE()
					AND c.id = vClient
			) sub;
	RETURN IFNULL(vMana,0);
END$$

DELIMITER ;