feat: GetChapters endpoint + tests

tests/Domain/Manga/Adapter/InMemoryMangaRepository.php

@@ -3,12 +3,17 @@
 namespace App\Tests\Domain\Manga\Adapter;
 
 use App\Domain\Manga\Domain\Contract\Repository\MangaRepositoryInterface;
+use App\Domain\Manga\Domain\Model\Chapter;
 use App\Domain\Manga\Domain\Model\Manga;
+use App\Domain\Manga\Domain\Model\ValueObject\ChapterId;
 
 class InMemoryMangaRepository implements MangaRepositoryInterface
 {
     /** @var Manga[] */
     private array $mangas = [];
+    
+    /** @var array<string, Chapter[]> */
+    private array $chapters = [];
 
     public function findAll(int $page = 1, int $limit = 20, string $sortBy = 'title', string $sortOrder = 'asc'): array
     {
@@ -66,8 +71,49 @@ class InMemoryMangaRepository implements MangaRepositoryInterface
         };
     }
 
+    public function findChapters(string $mangaId, int $page = 1, int $limit = 20, string $sortOrder = 'desc'): array
+    {
+        if (!isset($this->chapters[$mangaId])) {
+            return [];
+        }
+
+        $chapters = $this->chapters[$mangaId];
+
+        usort($chapters, function (Chapter $a, Chapter $b) use ($sortOrder) {
+            return $sortOrder === 'desc'
+                ? $b->getNumber() <=> $a->getNumber()
+                : $a->getNumber() <=> $b->getNumber();
+        });
+
+        $offset = ($page - 1) * $limit;
+        return array_slice($chapters, $offset, $limit);
+    }
+
+    public function countChapters(string $mangaId): int
+    {
+        return isset($this->chapters[$mangaId]) ? count($this->chapters[$mangaId]) : 0;
+    }
+
+    public function addChaptersToManga(string $mangaId, int $count): void
+    {
+        $this->chapters[$mangaId] = [];
+        
+        for ($i = 1; $i <= $count; $i++) {
+            $this->chapters[$mangaId][] = new Chapter(
+                id: new ChapterId((string)$i),
+                mangaId: $mangaId,
+                number: (float)$i,
+                title: "Chapter $i",
+                volume: (int)ceil($i / 10),
+                isVisible: true,
+                createdAt: new \DateTimeImmutable()
+            );
+        }
+    }
+
     public function clear(): void
     {
         $this->mangas = [];
+        $this->chapters = [];
     }
 }