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| 1 | <?php |
| 2 | |
| 3 | declare(strict_types=1); |
| 4 | |
| 5 | namespace Cosray\Api\Controller; |
| 6 | |
| 7 | use Celema\Core\Exception\HttpBadRequest; |
| 8 | use Celema\Core\Exception\HttpNotFound; |
| 9 | use Celema\Core\Request; |
| 10 | use Cosray\Api\NodeQuery; |
| 11 | use Cosray\Api\Responses; |
| 12 | use Cosray\Api\Serializer; |
| 13 | use Cosray\Cms; |
| 14 | use Cosray\Context; |
| 15 | use Cosray\Field\Services; |
| 16 | use Cosray\Security\NodeAccess; |
| 17 | use Cosray\User; |
| 18 | use Psr\Http\Message\ResponseInterface as Response; |
| 19 | |
| 20 | /** |
| 21 | * Resolves a URL path the way the website does, so a headless frontend can |
| 22 | * route its own URLs: any published node with that active path, read in the |
| 23 | * path's locale, or the path to redirect to when the node moved. |
| 24 | */ |
| 25 | final class Route |
| 26 | { |
| 27 | public function __construct( |
| 28 | private readonly Responses $responses, |
| 29 | ) {} |
| 30 | |
| 31 | public function route(Request $request, Context $context, Services $services, NodeAccess $access): Response |
| 32 | { |
| 33 | // Finder, values and serializer share this context, so switching |
| 34 | // its locale switches the locale the node is read in. |
| 35 | $cms = new Cms($context, $services); |
| 36 | $serializer = new Serializer($context, $services->types); |
| 37 | $params = $request->params(); |
| 38 | $path = $params['path'] ?? null; |
| 39 | |
| 40 | if (!is_string($path) || !str_starts_with($path, '/')) { |
| 41 | throw new HttpBadRequest($request, payload: ['message' => '`path` is a URL path starting with a slash.']); |
| 42 | } |
| 43 | |
| 44 | $row = $context->db->paths->byPath(['path' => $path])->first(); |
| 45 | $node = $row !== null && $row['inactive'] === null ? $cms->node->byPath($path) : null; |
| 46 | $user = $request->get('user', null); |
| 47 | |
| 48 | if ($node !== null && !$access->serves($user instanceof User ? $user : null, $node)) { |
| 49 | throw new HttpNotFound($request, payload: ['message' => "Nothing answers at '{$path}'."]); |
| 50 | } |
| 51 | |
| 52 | if ($node === null) { |
| 53 | $redirect = $row !== null ? $this->activePath($context, (int) $row['node']) : null; |
| 54 | |
| 55 | if ($redirect === null || $redirect === $path) { |
| 56 | throw new HttpNotFound($request, payload: ['message' => "Nothing answers at '{$path}'."]); |
| 57 | } |
| 58 | |
| 59 | return $this->responses->json(['redirect' => $redirect]); |
| 60 | } |
| 61 | |
| 62 | $locale = isset($params['locale']) ? $context->locale() : $context->locales()->get((string) $row['locale']); |
| 63 | $data = $context->withLocale($locale, static fn(): array => $serializer->node( |
| 64 | $node, |
| 65 | NodeQuery::source($params['view'] ?? null), |
| 66 | NodeQuery::fields($params['fields'] ?? null), |
| 67 | )); |
| 68 | |
| 69 | return $this->responses->json(['node' => $data], headers: ['ETag' => Serializer::etag($node)]); |
| 70 | } |
| 71 | |
| 72 | /** The node's active path in the request locale or its nearest fallback. */ |
| 73 | private function activePath(Context $context, int $node): ?string |
| 74 | { |
| 75 | $paths = []; |
| 76 | |
| 77 | foreach ($context->db->paths->activeByNode(['node' => $node])->all() as $active) { |
| 78 | $paths[(string) $active['locale']] = (string) $active['path']; |
| 79 | } |
| 80 | |
| 81 | $locale = $context->locale(); |
| 82 | |
| 83 | while ($locale) { |
| 84 | if (isset($paths[$locale->id])) { |
| 85 | return $paths[$locale->id]; |
| 86 | } |
| 87 | |
| 88 | $locale = $locale->fallback(); |
| 89 | } |
| 90 | |
| 91 | return $paths === [] ? null : reset($paths); |
| 92 | } |
| 93 | } |