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<?php
/**
* Provides the calculatable trait, to be used by something of which
* subtotal, VAT and total can be calculated.
*
* @author Camil Staps
*
* BusinessAdmin: administrative software for small companies
* Copyright (C) 2015 Camil Staps (ViviSoft)
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
/**
* The calculatable trait, to be used by something of which subtotal, VAT and
* total can be calculated
*/
trait Calculatable {
abstract public function calculateSubtotal();
abstract public function calculateVAT();
public function calculateTotal() {
return $this->calculateSubtotal() + $this->calculateVAT();
}
public function calculate($what = self::TOTAL, $round = 2, $format = true) {
$return = 0;
switch ($what) {
case self::SUBTOTAL:
$return = $this->calculateSubtotal();
break;
case self::VAT:
$return = $this->calculateVAT();
break;
case self::TOTAL:
$return = $this->calculateTotal();
break;
default:
return false;
}
if ($format) {
return number_format($return, $round);
} else {
return $return;
}
}
}
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