feat(controller): add post lists controller

src/Controller/DetailPostController.php

@@ -0,0 +1,8 @@
+<?php
+
+namespace App\Controller;
+
+class DetailPostController
+{
+
+}

src/Controller/ListPostController.php

@@ -0,0 +1,56 @@
+<?php
+
+declare(strict_types=1);
+
+namespace App\Controller;
+
+use App\Repository\Post\PostRepository;
+use App\Utils\Paginator\Paginator;
+use Symfony\Bundle\FrameworkBundle\Controller\AbstractController;
+use Symfony\Component\HttpFoundation\Response;
+use Symfony\Component\HttpKernel\Exception\NotFoundHttpException;
+use Symfony\Component\Routing\Attribute\Route;
+
+final class ListPostController extends AbstractController
+{
+    public function __construct(
+        private readonly int $pageSize,
+        private readonly int $maxVisiblePages,
+        private readonly PostRepository $postRepository,
+        private readonly Paginator $paginator,
+    ) {
+    }
+
+    #[Route('/', name: 'default')]
+    public function default(): Response
+    {
+        return $this->forward(ListPostController::class . '::pageList', ['page' => 1]);
+    }
+
+    #[Route('/posts/{page}', name: 'page_list', requirements: ['page' => '\d+'], defaults: ['page' => 1])]
+    public function pageList(int $page): Response
+    {
+        $totalPages = (int) ceil($this->postRepository->count([]) / $this->pageSize); /* TODO: tohle by si zaslouzilo asi cache */
+
+        if ($totalPages === 0) {
+            $this->logger->error('No posts found. Try run brilo:refresh-database command.');
+            throw new NotFoundHttpException('No posts found.');
+        }
+
+        if ($page === 0) {
+            return $this->redirectToRoute('page_list', ['page' => 1]);
+        }
+
+        // If page number is out of range, redirect to the last page.
+        if ($page > $totalPages) {
+            return $this->redirectToRoute('page_list', ['page' => $totalPages]);
+        }
+
+        $posts = $this->postRepository->getPaginatedPosts($page, $this->pageSize);
+
+        return $this->render('list_post/list.html.twig', [
+            'posts' => $posts,
+            'page' => $this->paginator->getVisiblePages($page, $totalPages, $this->maxVisiblePages),
+        ]);
+    }
+}

src/Repository/Post/PostRepository.php

@@ -18,4 +18,20 @@ class PostRepository extends ServiceEntityRepository
     {
         parent::__construct($registry, Post::class);
     }
+
+    /**
+     * @param int $page
+     * @param int $pageSize
+     * @return array<Post>
+     */
+    public function getPaginatedPosts(int $page, int $pageSize): array
+    {
+        $query = $this->createQueryBuilder('p')
+            ->orderBy('p.id', 'DESC')
+            ->setFirstResult(($page - 1) * $pageSize)
+            ->setMaxResults($pageSize)
+            ->getQuery();
+
+        return $query->getResult();
+    }
 }

src/Utils/Paginator/Paginator.php

@@ -0,0 +1,45 @@
+<?php
+
+declare(strict_types=1);
+
+namespace App\Utils\Paginator;
+
+class Paginator
+{
+    /**
+     * Determinate which pages are visible in the paginator
+     * @param int $page
+     * @param int $totalPages
+     * @param int $maxVisiblePages
+     * @return PaginatorResult
+     */
+    public function getVisiblePages(int $page, int $totalPages, int $maxVisiblePages): PaginatorResult
+    {
+        $half = floor($maxVisiblePages / 2);
+
+        if ($page <= $half) {
+            $start = 1;
+            $end = min($totalPages, $maxVisiblePages);
+        } elseif ($page > $totalPages - $half) {
+            $start = max(1, $totalPages - $maxVisiblePages + 1);
+            $end = $totalPages;
+        } else {
+            $start = $page - $half;
+            $end = min($totalPages, $page + $half);
+        }
+
+        /**
+         * @var array<int> $range
+         */
+        $range = range($start, $end);
+
+        return new PaginatorResult(
+            $page,
+            $start == 1,
+            $end == $totalPages,
+            $totalPages,
+            $totalPages,
+            $range
+        );
+    }
+}

src/Utils/Paginator/PaginatorResult.php

@@ -0,0 +1,21 @@
+<?php
+
+declare(strict_types=1);
+
+namespace App\Utils\Paginator;
+
+readonly class PaginatorResult
+{
+    public function __construct(
+        public int $currentPage,
+        public bool $firstPageVisible,
+        public bool $lastPageVisible,
+        public int $totalPages,
+        public int $lastPage,
+        /**
+         * @var array<int>
+         */
+        public array $visiblePages,
+    ) {
+    }
+}