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<?php |
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declare(strict_types=1); |
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namespace hiqdev\php\billing\price; |
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use hiqdev\php\billing\plan\PlanInterface; |
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use hiqdev\php\billing\target\TargetInterface; |
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use hiqdev\php\billing\type\TypeInterface; |
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use hiqdev\php\units\Quantity; |
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use hiqdev\php\units\QuantityInterface; |
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use Money\Currency; |
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use Money\Money; |
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class ProgressivePrice extends AbstractPrice |
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{ |
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/* @psalm-var array{array{ |
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* "price": numeric, |
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* "currency": string, |
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* "value": numeric, |
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* }} $condition |
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*/ |
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protected array $condition; |
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/** |
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* @var QuantityInterface prepaid quantity also implies Unit |
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* XXX cannot be null cause Unit is required |
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*/ |
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protected $prepaid; |
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public function __construct( |
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$id, |
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TypeInterface $type, |
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TargetInterface $target, |
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QuantityInterface $prepaid, |
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array $condition, |
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PlanInterface $plan = null, |
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) { |
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parent::__construct($id, $type, $target, $plan); |
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$this->prepaid = $prepaid; |
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$this->condition = $condition; |
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} |
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public function getPrepaid() |
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{ |
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return $this->prepaid; |
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} |
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public function getCondition(): array |
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{ |
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return $this->condition; |
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} |
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public function setCondition(string $key, array $condition): self |
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{ |
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$this->condition[] = $condition; |
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return $this; |
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} |
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private function prepareCondition(): void |
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{ |
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usort($this->condition, function($a, $b) |
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{ |
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return $b['value'] <=> $a['value']; |
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} |
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); |
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} |
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/** |
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* @inheritDoc |
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*/ |
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public function calculateUsage(QuantityInterface $quantity): ?QuantityInterface |
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{ |
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$usage = $quantity->convert($this->prepaid->getUnit())->subtract($this->prepaid); |
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if ($usage->isPositive()) { |
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return $usage; |
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} |
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return Quantity::create($this->prepaid->getUnit()->getName(), 0); |
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} |
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/** |
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* @inheritDoc |
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*/ |
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public function calculatePrice(QuantityInterface $quantity): ?Money |
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{ |
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$result = null; |
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$this->prepareCondition(); |
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$usage = $this->calculateUsage($quantity); |
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$quantity = $usage->getQuantity(); |
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foreach ($this->condition as $key => $condition) { |
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if ($condition['value'] < $quantity) { |
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if ($key !== count($this->condition) - 1) { |
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$boundary = $quantity - $condition['value']; |
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$result += $boundary * $condition['price']; |
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$quantity = $quantity - $boundary; |
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} else { |
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$result += $quantity * $condition['price']; |
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} |
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} |
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} |
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return new Money((int)($result * 100), new Currency($condition['currency'])); |
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} |
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public function calculateSum(QuantityInterface $quantity): ?Money |
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{ |
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return $this->calculatePrice($quantity); |
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} |
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} |
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hiqdev /
php-billing
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This check looks for parameters that have been defined for a function or method, but which are not used in the method body.