<?php

namespace Modules\Core\Shipping\Http\Controllers;

use Illuminate\Http\Request;
use Illuminate\Routing\Controller;
use Modules\Core\Shipping\Contracts\CarrierFulfillmentInterface;
use Modules\Core\Shipping\Contracts\SupportsBatchLabels;
use Modules\Core\Shipping\Models\Shipment;

/**
 * The Pending Vouchers screen's "Print selected": several shipments' labels
 * as one PDF. Same signed-URL auth as DownloadShipmentLabelController —
 * the ids are part of the signed query string, so they can't be changed.
 * All shipments must be one carrier's (the screen's tabs are per carrier)
 * and that carrier must implement SupportsBatchLabels.
 */
class DownloadShipmentLabelsController extends Controller
{
    public function __invoke(Request $request)
    {
        if (! $request->hasValidSignature()) {
            abort(401);
        }

        $ids = array_filter(array_map('intval', explode(',', (string) $request->query('ids'))));

        $shipments = Shipment::whereIn('id', $ids)->orderBy('id')->get()
            ->filter(fn (Shipment $shipment) => $shipment->hasCarrierLabel());

        $carriers = $shipments->pluck('carrier')->unique();

        if ($shipments->isEmpty() || $carriers->count() !== 1) {
            abort(404);
        }

        $service = app(CarrierFulfillmentInterface::class, ['carrier' => $carriers->first()]);

        if (! $service instanceof SupportsBatchLabels) {
            abort(404);
        }

        return response($service->printLabels($shipments), 200, [
            'Content-Type' => 'application/pdf',
            'Content-Disposition' => 'inline; filename="labels-'.now()->format('Ymd-His').'.pdf"',
        ]);
    }
}