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<?php |
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/** |
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* PHP Billing Library |
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* |
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* @link https://github.com/hiqdev/php-billing |
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* @package php-billing |
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* @license BSD-3-Clause |
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* @copyright Copyright (c) 2017-2018, HiQDev (http://hiqdev.com/) |
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*/ |
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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\QuantityInterface; |
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use hiqdev\php\units\UnitInterface; |
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use Money\Currency; |
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use Money\Money; |
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/** |
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* Enum Price: |
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* - holds sums list: amount => total sum for the quantity NOT price per unit |
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* - listed quantities only else exception. |
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* @see PriceInterface |
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* |
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* @author Andrii Vasyliev <[email protected]> |
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*/ |
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class EnumPrice extends AbstractPrice |
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{ |
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/** |
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* @var UnitInterface |
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*/ |
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protected $unit; |
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/** |
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* @var Currency |
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*/ |
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protected $currency; |
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/** |
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* @var array quantity => total sum for the quantity |
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*/ |
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protected $sums; |
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2 |
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public function __construct( |
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$id, |
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TypeInterface $type, |
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TargetInterface $target, |
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?PlanInterface $plan, |
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UnitInterface $unit, |
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Currency $currency, |
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array $sums |
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) { |
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parent::__construct($id, $type, $target, $plan); |
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$this->unit = $unit; |
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$this->currency = $currency; |
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$this->sums = $sums; |
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2 |
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} |
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public function getUnit() |
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{ |
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return $this->unit; |
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} |
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public function getCurrency() |
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{ |
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return $this->currency; |
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} |
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1 |
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public function getSums() |
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{ |
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return $this->sums; |
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} |
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/** |
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* {@inheritdoc} |
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*/ |
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public function calculateSum(QuantityInterface $quantity): ?Money |
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{ |
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$usage = $this->calculateUsage($quantity)->getQuantity(); |
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foreach ($this->sums as $value => $price) { |
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if ((string) $value === (string) $usage) { |
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return new Money($price, $this->currency); |
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} |
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} |
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throw new FailedCalculatePriceException('not enumed quantity: ' . $usage); |
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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 $quantity): ?Money |
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{ |
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$sum = $this->calculateSum($quantity); |
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if ($sum === null) { |
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return null; |
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} |
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$usage = $this->calculateUsage($quantity); |
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if ($usage === null) { |
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return null; |
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} |
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return $sum->divide($usage->getQuantity()); |
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} |
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/** |
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* {@inheritdoc} |
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*/ |
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4 |
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public function calculateUsage(QuantityInterface $quantity): ?QuantityInterface |
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{ |
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return $quantity->convert($this->unit); |
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} |
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} |
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hiqdev /
php-billing
