Helper Functions

namespace App\Models;

use Illuminate\Database\Eloquent\Model;
use Devhammed\LaravelBrickMoney\Money;

class Product extends Model
{
    public function getPriceAttribute(): Money
    {
        // Convert cents stored in DB to Money object
        return money($this->price_cents, $this->currency, minor: true);
    }
    
    public function getDiscountedPriceAttribute(): Money
    {
        return $this->price->multipliedBy(1 - ($this->discount_percent / 100));
    }
    
    public function getTaxAmountAttribute(): Money
    {
        return $this->price->multipliedBy($this->tax_rate / 100);
    }
    
    public function getTotalPriceAttribute(): Money
    {
        return $this->price->plus($this->tax_amount);
    }
}

namespace App\Services;

use Devhammed\LaravelBrickMoney\Money;

class PaymentService
{
    public function calculateProcessingFee(Money $amount): Money
    {
        // 2.9% + $0.30
        $percentageFee = $amount->multipliedBy(0.029);
        $fixedFee = money(30, $amount->getCurrency()->getCode(), minor: true);
        
        return $percentageFee->plus($fixedFee);
    }
    
    public function convertCurrency(
        Money $amount,
        string $targetCurrency,
        float $exchangeRate
    ): Money {
        return $amount->convertedTo($targetCurrency, $exchangeRate);
    }
    
    public function splitPayment(Money $total, int $installments): array
    {
        return $total->split($installments);
    }
}

{{-- In controllers, pass to view --}}
public function show(Product $product)
{
    return view('products.show', [
        'product' => $product,
        'price' => money($product->price_cents, $product->currency, minor: true),
    ]);
}

{{-- In blade templates --}}
<div class="product-details">
    <h1>{{ $product->name }}</h1>
    <p class="price">{{ money($product->price_cents, $product->currency, minor: true) }}</p>
    
    @if($product->on_sale)
        <p class="sale-price">
            {{ money($product->sale_price_cents, $product->currency, minor: true) }}
        </p>
    @endif
</div>

namespace App\Http\Resources;

use Illuminate\Http\Resources\Json\JsonResource;

class ProductResource extends JsonResource
{
    public function toArray($request): array
    {
        return [
            'id' => $this->id,
            'name' => $this->name,
            'price' => money(
                $this->price_cents,
                $this->currency,
                minor: true
            ),
            'discounted_price' => $this->when(
                $this->discount_percent > 0,
                fn() => money($this->price_cents, $this->currency, minor: true)
                    ->multipliedBy(1 - ($this->discount_percent / 100))
            ),
        ];
    }
}

$usd = currency('USD');
$eur = currency('EUR');
$anotherUsd = currency('USD');

$usd->is($eur);         // false
$usd->is($anotherUsd);  // true
$usd->is('USD');        // true
$usd->is('EUR');        // false

public function getCurrencies(): array
{
    $codes = ['USD', 'EUR', 'GBP', 'JPY', 'CAD'];
    
    return collect($codes)->map(function ($code) {
        $currency = currency($code);
        
        return [
            'code' => $currency->getCode(),
            'name' => $currency->getName(),
            'symbol' => $currency->getSymbol(),
            'decimal_places' => $currency->getDecimalPlaces(),
        ];
    })->all();
}

public function formatPrice(int $cents, string $currencyCode): string
{
    $currency = currency($currencyCode);
    $money = money($cents, $currencyCode, minor: true);
    
    // Custom formatting based on currency properties
    $symbol = $currency->getSymbol();
    $amount = $money->format();
    
    if ($currency->isSymbolFirst()) {
        $separator = $currency->isSymbolSpaced() ? ' ' : '';
        return $symbol . $separator . $amount;
    }
    
    return $amount;
}