<?php

declare(strict_types=1);

namespace App\BusProNet\Model;

/**
 * Represents payment terms from the booking response.
 *
 * Contains deposit/final payment details and any applied purchase vouchers.
 */
class PaymentTerms
{
    /**
     * @param array<array{nummer: string, betrag: float}> $appliedPurchaseVouchers
     */
    public function __construct(
        public readonly ?float $depositAmount = null,
        public readonly ?string $depositDate = null,
        public readonly ?float $finalPaymentAmount = null,
        public readonly ?string $finalPaymentDate = null,
        public readonly array $appliedPurchaseVouchers = [],
    ) {
    }

    /**
     * Gets the total discount from purchase vouchers.
     */
    public function getPurchaseVoucherDiscount(): float
    {
        $total = 0.0;
        foreach ($this->appliedPurchaseVouchers as $voucher) {
            $total += $voucher['betrag'];
        }

        return round($total, 2);
    }
}