<?php

namespace Modules\Core\Shipping\Carriers\Manual;

use Lunar\Models\Order;
use Lunar\Shipping\Models\ShippingMethod;
use Modules\Core\Shipping\Contracts\CarrierFulfillmentInterface;
use Modules\Core\Shipping\DTOs\ShipmentRequest;
use Modules\Core\Shipping\Models\Shipment;
use RuntimeException;

/**
 * Shipments of a manual carrier (ManualRateDriver): recorded here only,
 * with no carrier API. The carrier's name and tracking URL template are
 * copied from the shipping method into the shipment's meta, so links keep
 * working if the method is edited later. Tracking updates are added by
 * staff from the order page.
 */
class ManualFulfillmentService implements CarrierFulfillmentInterface
{
    public function createShipment(Order $order, ShipmentRequest $request): Shipment
    {
        $code = $order->shippingAddress?->shipping_option;
        $method = $code ? ShippingMethod::where('code', $code)->first() : null;

        return Shipment::create([
            'order_id' => $order->id,
            'carrier' => 'manual',
            'source' => Shipment::SOURCE_MANUAL,
            'tracking_reference' => filled($request->trackingReference) ? trim($request->trackingReference) : null,
            'meta' => [
                'carrier_name' => $method?->data['carrier_name'] ?? null,
                'tracking_url' => $method?->data['tracking_url'] ?? null,
                'package_count' => $request->packageCount,
                'weight' => $request->weight,
                'cod_amount' => $request->paymentMode === 'cod'
                    ? (float) ($request->amountToCollect ?? $order->total->decimal)
                    : null,
            ],
        ]);
    }

    public function printLabel(Shipment $shipment): string
    {
        throw new RuntimeException('Manual carriers have no printable label.');
    }

    public function cancelShipment(Shipment $shipment): void
    {
        $shipment->update(['cancelled_at' => now()]);
    }
}