78 lines
1.7 KiB
PHP
78 lines
1.7 KiB
PHP
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<?php
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namespace Modules\Cart;
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use JsonSerializable;
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use Modules\Support\Money;
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class CartTax implements JsonSerializable
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{
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private $cart;
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private $taxRate;
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private $taxCondition;
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public function __construct($cart, $taxRate, $taxCondition)
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{
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$this->cart = $cart;
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$this->taxRate = $taxRate;
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$this->taxCondition = $taxCondition;
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}
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public function id()
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{
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return $this->taxRate->id;
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}
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public function name()
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{
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return $this->taxRate->name;
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}
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public function amount()
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{
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return Money::inDefaultCurrency($this->calculate());
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}
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private function calculate()
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{
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return $this->taxCondition->getCalculatedValue($this->productsTotalPrice());
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}
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private function productsTotalPrice()
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{
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return $this->taxApplicableProducts()->sum(function ($cartItem) {
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return $cartItem->total()->amount();
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});
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}
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private function taxApplicableProducts()
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{
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return $this->cart->items()->filter(function ($cartItem) {
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return $this->hasMatchingTaxClass($cartItem);
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});
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}
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private function hasMatchingTaxClass($cartItem)
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{
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return $cartItem->product->tax_class_id === $this->taxRate->tax_class_id;
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}
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public function toArray()
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{
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return [
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'name' => $this->name(),
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'amount' => $this->amount(),
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];
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}
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public function jsonSerialize()
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{
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return $this->toArray();
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}
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public function __toString()
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{
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return json_encode($this->jsonSerialize());
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}
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}
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