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<?php |
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namespace hiqdev\billing\hiapi\tools; |
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use hiqdev\billing\hiapi\charge\Generalizer; |
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use hiqdev\billing\hiapi\type\TypeSemantics; |
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use hiqdev\php\billing\bill\BillInterface; |
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use hiqdev\php\billing\charge\GeneralizerInterface; |
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use hiqdev\php\units\Quantity; |
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use hiqdev\php\units\QuantityInterface; |
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use hiqdev\php\units\Unit; |
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/** |
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* Normally, when monthly charges are put in the single bill, the bill quantity |
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* increases accordingly. But it's not the right scenario for monthly bills: all |
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* the charges are for the month quantity, but the whole bill is for one month as well. |
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* |
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* Class MonthlyBillQuantityFixer is applicable only for monthly bills and |
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* adjusts the quantity of monthly bills according to the number of days in month. |
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* |
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* @author Dmytro Naumenko <[email protected]> |
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*/ |
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final class MonthlyBillQuantityFixer |
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{ |
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/** |
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* @var Generalizer |
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*/ |
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private $generalizer; |
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/** |
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* @var TypeSemantics |
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*/ |
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private $typeSemantics; |
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public function __construct( |
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GeneralizerInterface $generalizer, |
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TypeSemantics $typeSemantics |
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) { |
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$this->generalizer = $generalizer; |
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$this->typeSemantics = $typeSemantics; |
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} |
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/** |
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* @param BillInterface $bill |
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*/ |
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public function __invoke($bill): void |
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{ |
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if ($this->typeSemantics->isMonthly($bill->getType())) { |
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$bill->setQuantity($this->calculateMonthlyQuantity($bill)); |
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} |
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} |
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private function calculateMonthlyQuantity(BillInterface $bill): QuantityInterface |
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{ |
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$res = null; |
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foreach ($bill->getCharges() as $charge) { |
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$amount = $this->generalizer->generalizeQuantity($charge); |
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if (!$amount->getUnit()->isConvertible(Unit::days())) { |
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continue; |
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} |
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if ($res === null || $amount->compare($res)>0) { |
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$res = $amount; |
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} |
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} |
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return $res ?? Quantity::create('days', 1); |
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} |
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} |
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Our type inference engine has found a suspicous assignment of a value to a property. This check raises an issue when a value that can be of a given class or a super-class is assigned to a property that is type hinted more strictly.
Either this assignment is in error or an instanceof check should be added for that assignment.