<?php

namespace Modules\Core\Cart\Pipelines;

use Closure;
use Lunar\DataTypes\Price;
use Lunar\Models\Contracts\CartLine as CartLineContract;

/**
 * Runs in config('lunar.cart.pipelines.cart_lines'), after GetUnitPrice —
 * zeroes out unitPrice/unitPriceInclTax for any line flagged
 * meta.saved_for_later, BEFORE Lunar's own CalculateLines pipeline step reads
 * unitPrice to compute subTotal/total. A saved-for-later item is deliberately
 * parked, not pending purchase, so it shouldn't inflate Cart::total — and
 * since CalculateLines sums every CartLine unconditionally with no meta-based
 * exclusion of its own, zeroing the price here (rather than patching subTotal
 * after the fact) is what makes every downstream total naturally correct
 * without a second pass.
 */
class ZeroSavedForLaterPrice
{
    public function handle(CartLineContract $cartLine, Closure $next): mixed
    {
        if ($cartLine->meta['saved_for_later'] ?? false) {
            $currency = $cartLine->cart->currency;

            $cartLine->unitPrice = new Price(0, $currency, 1);
            $cartLine->unitPriceInclTax = new Price(0, $currency, 1);
        }

        return $next($cartLine);
    }
}