finished laravel migration

app/Http/Controllers/SettingController.php

@@ -0,0 +1,27 @@
+<?php
+
+namespace App\Http\Controllers;
+
+use App\Models\Setting;
+use Illuminate\Http\JsonResponse;
+use Illuminate\Http\Request;
+
+class SettingController extends Controller
+{
+    public function index(Request $request): JsonResponse
+    {
+        $query = Setting::query();
+
+        if ($request->filled('key')) {
+            $query->where('key', $request->query('key'));
+        }
+
+        $settings = $query->get()->map(fn (Setting $setting) => [
+            'id' => $setting->id,
+            'key' => $setting->key,
+            'value' => $setting->value,
+        ]);
+
+        return response()->json($settings);
+    }
+}