Fix type error in books controller

app/Http/Controllers/BooksController.php

@@ -11,13 +11,19 @@ use Illuminate\Support\Arr;
 
 class BooksController extends BasePageController
 {
+    protected BookService $bookService;
+
+    public function __construct(BookService $bookService)
+    {
+        parent::__construct();
+        $this->bookService = $bookService;
+    }
+
     /**
      * @throws \Exception
      */
     public function index(Request $request, string $id = ''): mixed
     {
-        $bookService = new BookService;
-
         $boocats = Category::getChildren(Category::BOOKS_ROOT);
 
         $btmp = [];
@@ -40,13 +46,14 @@ class BooksController extends BasePageController
         $catarray = [];
         $catarray[] = $category;
 
-        $ordering = $bookService->getBookOrdering();
+        $ordering = $this->bookService->getBookOrdering();
         $orderby = $request->has('ob') && \in_array($request->input('ob'), $ordering, false) ? $request->input('ob') : '';
 
         $books = [];
-        $page = $request->has('page') && is_numeric($request->input('page')) ? $request->input('page') : 1;
+        $pageInput = $request->input('page');
+        $page = is_scalar($pageInput) && preg_match('/^\d+$/', (string) $pageInput) === 1 ? max(1, (int) $pageInput) : 1;
         $offset = ($page - 1) * (int) config('nntmux.items_per_cover_page');
-        $rslt = $bookService->getBookRange($page, $catarray, $offset, (int) config('nntmux.items_per_cover_page'), $orderby, (array) $this->userdata->categoryexclusions);
+        $rslt = $this->bookService->getBookRange($page, $catarray, $offset, (int) config('nntmux.items_per_cover_page'), $orderby, (array) $this->userdata->categoryexclusions);
         $results = $this->paginate($rslt, $rslt[0]->_totalcount ?? 0, (int) config('nntmux.items_per_cover_page'), $page, $request->url(), $request->query());
         $maxwords = 50;
         foreach ($results as $result) {

tests/Feature/BooksControllerTest.php

@@ -0,0 +1,120 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Tests\Feature;
+
+use App\Http\Controllers\BooksController;
+use App\Models\Category;
+use App\Models\User;
+use App\Services\BookService;
+use Illuminate\Database\Schema\Blueprint;
+use Illuminate\Http\Request;
+use Illuminate\Pagination\LengthAwarePaginator;
+use Illuminate\Support\Facades\Cache;
+use Illuminate\Support\Facades\DB;
+use Illuminate\Support\Facades\Schema;
+use Mockery;
+use Mockery\Adapter\Phpunit\MockeryPHPUnitIntegration;
+use Tests\TestCase;
+
+class BooksControllerTest extends TestCase
+{
+    use MockeryPHPUnitIntegration;
+
+    protected function setUp(): void
+    {
+        parent::setUp();
+
+        config([
+            'database.default' => 'sqlite',
+            'database.connections.sqlite.database' => ':memory:',
+            'app.key' => 'base64:'.base64_encode(random_bytes(32)),
+            'nntmux.items_per_cover_page' => 50,
+            'nntmux.cache_expiry_long' => 5,
+        ]);
+
+        DB::purge();
+        DB::reconnect();
+        Cache::flush();
+
+        $this->createSchema();
+        $this->seedCategories();
+    }
+
+    public function test_index_coerces_numeric_page_query_strings_to_ints_before_calling_book_service(): void
+    {
+        $bookService = Mockery::mock(BookService::class);
+        $bookService->shouldReceive('getBookOrdering')
+            ->once()
+            ->andReturn(['posted_desc']);
+        $bookService->shouldReceive('getBookRange')
+            ->once()
+            ->with(2, [Category::BOOKS_ROOT], 50, 50, '', [])
+            ->andReturn(collect());
+
+        $controller = new BooksController($bookService);
+        $user = new User;
+        $user->categoryexclusions = [];
+        $controller->userdata = $user;
+
+        $request = Request::create('/Books', 'GET', ['page' => '2']);
+
+        $response = $controller->index($request);
+
+        $this->assertSame(2, $response->getData()['results']->currentPage());
+        $this->assertInstanceOf(LengthAwarePaginator::class, $response->getData()['results']);
+    }
+
+    private function createSchema(): void
+    {
+        Schema::create('settings', function (Blueprint $table): void {
+            $table->string('name')->primary();
+            $table->text('value')->nullable();
+        });
+
+        Schema::create('root_categories', function (Blueprint $table): void {
+            $table->unsignedInteger('id')->primary();
+            $table->string('title');
+            $table->integer('status')->default(1);
+            $table->boolean('disablepreview')->default(false);
+            $table->timestamps();
+        });
+
+        Schema::create('categories', function (Blueprint $table): void {
+            $table->unsignedInteger('id')->primary();
+            $table->string('title');
+            $table->unsignedInteger('parentid')->nullable();
+            $table->integer('status')->default(1);
+            $table->text('description')->nullable();
+            $table->boolean('disablepreview')->default(false);
+            $table->unsignedBigInteger('minsizetoformrelease')->default(0);
+            $table->unsignedBigInteger('maxsizetoformrelease')->default(0);
+            $table->unsignedInteger('root_categories_id')->nullable();
+        });
+    }
+
+    private function seedCategories(): void
+    {
+        DB::table('root_categories')->insert([
+            'id' => Category::BOOKS_ROOT,
+            'title' => 'Books',
+            'status' => 1,
+            'disablepreview' => 0,
+            'created_at' => now(),
+            'updated_at' => now(),
+        ]);
+
+        DB::table('categories')->insert([
+            'id' => Category::BOOKS_EBOOK,
+            'title' => 'EBook',
+            'parentid' => Category::BOOKS_ROOT,
+            'status' => 1,
+            'description' => 'Books',
+            'disablepreview' => 0,
+            'minsizetoformrelease' => 0,
+            'maxsizetoformrelease' => 0,
+            'root_categories_id' => Category::BOOKS_ROOT,
+        ]);
+    }
+}