fixed #20

app/Http/Middleware/RedirectIfNotInstalled.php

@@ -0,0 +1,32 @@
+<?php
+
+namespace App\Http\Middleware;
+
+use Closure;
+use File;
+
+class RedirectIfNotInstalled
+{
+    /**
+     * Handle an incoming request.
+     *
+     * @param  \Illuminate\Http\Request  $request
+     * @param  \Closure  $next
+     * @return mixed
+     */
+    public function handle($request, Closure $next)
+    {
+        // Check if .env file exists
+        if (File::exists(base_path('.env'))) {
+            return $next($request);
+        }
+
+        // Already in the wizard
+        if (starts_with($request->getPathInfo(), '/install')) {
+            return $next($request);
+        }
+
+        // Not installed, redirect to installation wizard
+        redirect('install/requirements')->send();
+    }
+}