<?php

declare(strict_types=1);

namespace App\Controller;

use App\Booking\BoardPresenter;
use App\Booking\DateParam;
use App\Booking\TimeRange;
use App\Htmx\HxTrait;
use Symfony\Bundle\FrameworkBundle\Controller\AbstractController;
use Symfony\Component\HttpFoundation\Request;
use Symfony\Component\HttpFoundation\Response;
use Symfony\Component\Routing\Attribute\Route;

/**
 * The booking board: a month calendar next to the floor plan for the selected day and span.
 */
final class DashboardController extends AbstractController
{
    use CurrentUserTrait;
    use HxTrait;

    public function __construct(private readonly BoardPresenter $board)
    {
    }

    #[Route('/', name: 'app_dashboard', methods: ['GET'])]
    public function index(Request $request): Response
    {
        $date = DateParam::parseOrToday($request->query->getString('tag'));

        return $this->render('dashboard/index.html.twig', $this->board->context($date, self::timeOf($request), $this->currentUser()));
    }

    /**
     * Picking a day -- or narrowing the span -- swaps the calendar and the floor plan in one
     * response.
     *
     * This is the whole reason htmxOobResponse exists: two regions, one round trip, no
     * client-side event choreography. Requests without the htmx header get a plain redirect
     * rather than a bare pair of fragments, so the URL stays shareable.
     */
    #[Route('/tag/{date}', name: 'app_dashboard_day', requirements: ['date' => DateParam::PATTERN], methods: ['GET'])]
    public function day(Request $request, string $date): Response
    {
        $selected = DateParam::parseOrToday($date);
        $time = self::timeOf($request);

        if (!$request->headers->has('HX-Request')) {
            return $this->redirectToRoute('app_dashboard', BoardPresenter::urlParameters($selected, $time));
        }

        return $this->htmxOobResponse(
            'dashboard/index.html.twig',
            ['calendar', 'floorplan'],
            $this->board->context($selected, $time, $this->currentUser()),
            $this->generateUrl('app_dashboard', BoardPresenter::urlParameters($selected, $time)),
        );
    }

    /**
     * A malformed or missing span falls back to the whole day rather than erroring: these are
     * hand-editable query parameters, not route requirements.
     */
    public static function timeOf(Request $request): TimeRange
    {
        return TimeRange::parse($request->query->getString('von'), $request->query->getString('bis'))
            ?? TimeRange::wholeDay();
    }
}