DROP FUNCTION IF EXISTS `getReserve`;
DELIMITER $$
CREATE FUNCTION `getReserve`(`expected_date` DATE,
                             `issue_date` DATE,
                             `payment_date` DATE,
                             `system_date` DATE,
                             `reserve` DOUBLE(10, 2),
                             `face_value` DOUBLE,
                             `sr` DOUBLE(4, 3),
                             `pp` DOUBLE(5, 3),
                             `trade_comission` DOUBLE(7, 4),
                             `override_180_day_rule` TINYINT(1),
                             `face_value_charge` DOUBLE(5, 3),
                             `credebt_facility_type` VARCHAR(20),
                             `face_value_charge_applied` TINYINT(1),
                             `ldc_premium` DOUBLE(6, 3),
                             `agent_commission` DOUBLE(6, 3)) RETURNS decimal(20, 10)
BEGIN
    SET
        @edso = IFNULL(DATEDIFF(DATE(expected_date), DATE(issue_date)), 0),
        @rdso =
                DATEDIFF(IF(reserve IS NOT NULL AND payment_date <= system_date, payment_date, system_date),
                         DATE(issue_date)),
        @adso = IF(@edso > @rdso, @edso, @rdso),
        @sr = sr * 100 / (100 - agent_commission),
        @face_value_charge = face_value_charge * 100 / (100 - agent_commission);
    IF (reserve IS NOT NULL AND (system_date = CURDATE() OR system_date >= payment_date)) THEN
        RETURN reserve;
    ELSEIF (`face_value_charge_applied` = 1) THEN
        RETURN face_value - face_value * pp / 100 - face_value * @face_value_charge / 100 -
               face_value * ldc_premium / 100 - trade_comission;
    ELSEIF (@adso >= 180 AND override_180_day_rule = 0) THEN
        RETURN face_value * @sr / 100 * 12 * (180 - @adso) / 360 - face_value * ldc_premium / 100 - trade_comission;
    ELSE
        RETURN face_value - face_value * @sr / 100 * 12 * 180 / 360 - face_value * pp / 100 +
               face_value * @sr / 100 * 12 * (180 - @adso) / 360 - face_value * ldc_premium / 100 - trade_comission;
    END IF;
END$$
DELIMITER ;

UPDATE invoice_master im
    JOIN debtors_detail dd on im.debtor_id = dd.debtor_id
    JOIN organisation_details od on im.user_id = od.user_id
SET im.face_value_charge         = IF(im.manual_transaction_id > 0, IFNULL(im.face_value_charge, 0),
                                      IFNULL(im.face_value_charge, IFNULL(dd.face_value_charge, IF(dd.type = 'debtor',
                                                                                                   IF(od.credebt_facility_type = 'fixed', od.face_value_charge, 0),
                                                                                                   od.creditor_face_value_charge)))),
    im.face_value_charge_applied = IF(im.manual_transaction_id > 0 AND dd.type = 'debtor', im.face_value_charge_applied,
                                      IF((dd.type = 'debtor' AND od.credebt_facility_type = 'fixed') OR
                                         (dd.type = 'creditor' AND IFNULL(im.face_value_charge,
                                                                          IFNULL(dd.face_value_charge, od.creditor_face_value_charge)) >
                                                                   0), 1, 0))
WHERE im.root_invoice_id > 0;