Write the env using the UpdateConfigCommand

app/Http/Controllers/SetupController.php

@@ -11,6 +11,7 @@
 
 namespace CachetHQ\Cachet\Http\Controllers;
 
+use CachetHQ\Cachet\Bus\Commands\System\Config\UpdateConfigCommand;
 use CachetHQ\Cachet\Models\User;
 use CachetHQ\Cachet\Settings\Repository;
 use Dotenv\Dotenv;
@@ -259,9 +260,7 @@ class SetupController extends Controller
             $envData = array_pull($postData, 'env');
 
             // Write the env to the .env file.
-            foreach ($envData as $envKey => $envValue) {
-                $this->writeEnv($envKey, $envValue);
-            }
+            dispatch(new UpdateConfigCommand($envData));
 
             if (Request::ajax()) {
                 return Response::json(['status' => 1]);
@@ -276,34 +275,4 @@ class SetupController extends Controller
 
         return cachet_redirect('setup')->withInput()->withErrors($v->getMessageBag());
     }
-
-    /**
-     * Writes to the .env file with given parameters.
-     *
-     * @param string $key
-     * @param mixed  $value
-     *
-     * @return void
-     */
-    protected function writeEnv($key, $value)
-    {
-        $dir = app()->environmentPath();
-        $file = app()->environmentFile();
-        $path = "{$dir}/{$file}";
-
-        try {
-            (new Dotenv($dir, $file))->load();
-
-            $envKey = strtoupper($key);
-            $envValue = env($envKey) ?: 'null';
-
-            file_put_contents($path, str_replace(
-                $envKey.'='.$envValue,
-                $envKey.'='.$value,
-                file_get_contents($path)
-            ));
-        } catch (InvalidPathException $e) {
-            //
-        }
-    }
 }