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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\Money; |
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class ProgressivePrice extends AbstractPrice |
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{ |
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public const SIGN_GREATER = '>'; |
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public const SIGN_LESS = '<'; |
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public const SIGN_GREATER_EQUAL = '>='; |
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public const SIGN_LESS_EQUAL = '<='; |
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public const SIGN_EQUAL = '='; |
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/* @psalm-var array{array{ |
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* "price": numeric, |
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* "currency": string, |
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* "sign_from": string, |
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* "value_from": numeric, |
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* "sign_till": string, |
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* "value_till", 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 $this; |
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} |
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private function prepareCondition(): void |
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{ |
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uksort($this->condition, function($a, $b) |
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{ |
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return $b['value_till'] - $a['value_till']; |
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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 $condition) { |
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$quantity = $usage->getQuantity(); |
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if (isset($condition['sign_from'])) { |
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if ($condition['sign_till'] === self::SIGN_EQUAL) { |
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$result = $usage->getQuantity(); |
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} |
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} else { |
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if ($condition['sign_till'] === self::SIGN_EQUAL || $condition['sign_till'] === self::SIGN_GREATER) { |
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} |
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} |
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} |
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return $result; |
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} |
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private function getIntervalBoundary(string $sign, int $value): float |
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{ |
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switch ($sign) { |
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case self::SIGN_GREATER: |
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return $value + 0.01; |
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case self::SIGN_LESS: |
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return $value - 0.01; |
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default: |
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return $value; |
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} |
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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.