Add separate API call to get notes of a link

app/Http/Controllers/API/LinkNotesController.php

@@ -0,0 +1,25 @@
+<?php
+
+namespace App\Http\Controllers\API;
+
+use App\Http\Controllers\Controller;
+use App\Models\Link;
+use Illuminate\Http\JsonResponse;
+
+class LinkNotesController extends Controller
+{
+    /**
+     * Get the notes for a specific link
+     *
+     * @param $linkID
+     * @return JsonResponse
+     */
+    public function __invoke($linkID): JsonResponse
+    {
+        $link = Link::findOrFail($linkID);
+
+        $notes = $link->notes()->paginate(getPaginationLimit());
+
+        return response()->json($notes);
+    }
+}

routes/api.php

@@ -1,6 +1,7 @@
 <?php
 
 use App\Http\Controllers\API\LinkController;
+use App\Http\Controllers\API\LinkNotesController;
 use App\Http\Controllers\API\ListController;
 use App\Http\Controllers\API\ListLinksController;
 use App\Http\Controllers\API\TagController;
@@ -28,6 +29,9 @@ Route::prefix('v1')->group(function () {
                 'destroy' => 'api.links.destroy',
             ]);
 
+        Route::get('links/{link}/notes', LinkNotesController::class)
+            ->name('api.links.notes');
+
         Route::apiResource('lists', ListController::class)
             ->names([
                 'index' => 'api.lists.index',

tests/Feature/Controller/API/LinkNotesTest.php

@@ -0,0 +1,72 @@
+<?php
+
+namespace Tests\Feature\Controller\Models;
+
+use App\Models\Link;
+use App\Models\Note;
+use App\Models\User;
+use Illuminate\Foundation\Testing\DatabaseMigrations;
+use Illuminate\Foundation\Testing\DatabaseTransactions;
+use Tests\TestCase;
+
+class LinkNotesTest extends TestCase
+{
+    use DatabaseTransactions;
+    use DatabaseMigrations;
+
+    private $user;
+
+    protected function setUp(): void
+    {
+        parent::setUp();
+
+        $this->user = factory(User::class)->create();
+    }
+
+    public function testLinksRequest(): void
+    {
+        $link = factory(Link::class)->create();
+        $note = factory(Note::class)->create([
+            'link_id' => $link->id,
+        ]);
+
+        $response = $this->getJson('api/v1/links/1/notes', $this->generateHeaders());
+
+        $response->assertStatus(200)
+            ->assertJson([
+                'data' => [
+                    ['note' => $note->note],
+                ],
+            ]);
+    }
+
+    public function testLinksRequestWithoutLinks(): void
+    {
+        $link = factory(Link::class)->create();
+
+        $response = $this->getJson('api/v1/links/1/notes', $this->generateHeaders());
+
+        $response->assertStatus(200)
+            ->assertJson([
+                'data' => [],
+            ]);
+
+        $responseBody = json_decode($response->content());
+
+        $this->assertEmpty($responseBody->data);
+    }
+
+    public function testShowRequestNotFound(): void
+    {
+        $response = $this->getJson('api/v1/links/1/notes', $this->generateHeaders());
+
+        $response->assertStatus(404);
+    }
+
+    protected function generateHeaders(): array
+    {
+        return [
+            'Authorization' => 'Bearer ' . $this->user->api_token,
+        ];
+    }
+}