Add Nextcloud OAuth 2.0 login via laravel/socialite

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

app/Http/Controllers/OAuthController.php

@@ -0,0 +1,34 @@
+<?php
+
+namespace App\Http\Controllers;
+
+use App\Models\User;
+use Illuminate\Http\RedirectResponse;
+use Illuminate\Support\Facades\Auth;
+use Illuminate\Support\Str;
+use Laravel\Socialite\Facades\Socialite;
+
+class OAuthController extends Controller
+{
+    public function redirect(): RedirectResponse
+    {
+        return Socialite::driver('nextcloud')->redirect();
+    }
+
+    public function callback(): RedirectResponse
+    {
+        $socialUser = Socialite::driver('nextcloud')->user();
+
+        $user = User::firstOrCreate(
+            ['email' => $socialUser->getEmail()],
+            [
+                'name'     => $socialUser->getName() ?? $socialUser->getNickname() ?? $socialUser->getEmail(),
+                'password' => Str::random(40),
+            ]
+        );
+
+        Auth::login($user, remember: true);
+
+        return redirect('/dashboard');
+    }
+}