First Commit

app/Http/Controllers/Auth/CaptchaController.php

@@ -0,0 +1,39 @@
+<?php
+
+declare(strict_types=1);
+
+namespace App\Http\Controllers\Auth;
+
+use App\Http\Controllers\Controller;
+use Illuminate\Http\Request;
+use Illuminate\Support\Facades\Session;
+
+class CaptchaController extends Controller
+{
+    /**
+     * Generate a new arithmetic captcha.
+     */
+    public function generate(Request $request): \Illuminate\Http\JsonResponse
+    {
+        $a = random_int(1, 20);
+        $b = random_int(1, 20);
+        $operations = ['+', '-', '*'];
+        $operation = $operations[array_rand($operations)];
+
+        if ($operation === '+') {
+            $answer = $a + $b;
+        } elseif ($operation === '-') {
+            $answer = $a - $b;
+        } else {
+            $answer = $a * $b;
+        }
+
+        $expression = "{$a} {$operation} {$b} = ?";
+
+        Session::put('captcha_answer', (string) $answer);
+
+        return response()->json([
+            'expression' => $expression,
+        ]);
+    }
+}