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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 JsonSerializable; |
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use hiqdev\php\units\Quantity; |
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use InvalidArgumentException; |
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use Money\Money; |
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final class ProgressivePriceThresholds implements JsonSerializable |
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{ |
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/** @var ProgressivePriceThreshold[] */ |
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private array $thresholds; |
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private int $priceRate = 0; |
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/** |
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* @param ProgressivePriceThreshold[] $thresholds |
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*/ |
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public function __construct( |
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array $thresholds |
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) |
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{ |
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foreach ($thresholds as $threshold) { |
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$this->add(ProgressivePriceThreshold::createFromScalar( |
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(string) $threshold['price'], |
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(string) $threshold['currency'], |
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(string) $threshold['quantity'], |
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(string) $threshold['unit'], |
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) |
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); |
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} |
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$this->priceRate = MoneyBuilder::calculatePriceMultiplier((string)$threshold['price']); |
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} |
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public function add(ProgressivePriceThreshold $threshold): void |
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{ |
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$this->checkCurrency($threshold->price()); |
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$this->checkUnit($threshold->quantity()); |
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$this->appendThresholds($threshold); |
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} |
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public function get(): array |
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{ |
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$this->prepareThresholds(); |
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return $this->thresholds; |
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} |
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public function getPriceRate(): int |
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{ |
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return $this->priceRate; |
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} |
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private function prepareThresholds(): void |
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{ |
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usort($this->thresholds, function (ProgressivePriceThreshold $a, ProgressivePriceThreshold $b) { |
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if ($b->quantity()->equals($a->quantity())) { |
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return $b->price()->getAmount() <=> $a->price()->getAmount(); |
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} |
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return $b->quantity()->getQuantity() <=> $a->quantity()->getQuantity(); |
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}); |
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} |
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private function checkCurrency(Money $price): void |
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{ |
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if (empty($this->thresholds)) { |
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return; |
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} |
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$last = $this->thresholds[array_key_last($this->thresholds)]; |
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if (!$last->price()->getCurrency()->equals($price->getCurrency()) |
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) { |
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throw new InvalidArgumentException(sprintf( |
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"Progressive price with threshold currency %s is not valid to other threshold currency %s", |
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$last->price()->getCurrency()->getCode(), |
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$price->getCurrency()->getCode() |
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)); |
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} |
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} |
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private function checkUnit(Quantity $prepaid): void |
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{ |
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if (empty($this->thresholds)) { |
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return; |
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} |
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$last = $this->thresholds[array_key_last($this->thresholds)]; |
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if (!$last->quantity()->getUnit()->isConvertible($prepaid->getUnit())) { |
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throw new InvalidArgumentException(sprintf( |
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"Progressive price with threshold unit %s is not convertible to other threshold unit %s", |
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$last->quantity()->getUnit()->getName(), |
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$prepaid->getUnit()->getName() |
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)); |
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} |
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} |
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private function appendThresholds(ProgressivePriceThreshold $threshold): void |
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{ |
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$this->thresholds[] = $threshold; |
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} |
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public function __toArray(): array |
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{ |
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$result = []; |
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foreach ($this->thresholds as $threshold) { |
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$result[] = $threshold->__toArray(); |
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} |
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return $result; |
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} |
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#[\ReturnTypeWillChange] |
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public function jsonSerialize() |
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{ |
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return $this->thresholds; |
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} |
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} |
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hiqdev /
php-billing
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