Add database connection check.

src/Controllers/EnvironmentController.php

@@ -2,9 +2,11 @@
 
 namespace RachidLaasri\LaravelInstaller\Controllers;
 
+use Exception;
 use Illuminate\Routing\Controller;
 use Illuminate\Http\Request;
 use Illuminate\Routing\Redirector;
+use Illuminate\Support\Facades\DB;
 use RachidLaasri\LaravelInstaller\Helpers\EnvironmentManager;
 use RachidLaasri\LaravelInstaller\Events\EnvironmentSaved;
 use Validator;
@@ -92,8 +94,13 @@ public function saveWizard(Request $request, Redirector $redirect)
         $validator = Validator::make($request->all(), $rules, $messages);
 
         if ($validator->fails()) {
-            $errors = $validator->errors();
-            return view('vendor.installer.environment-wizard', compact('errors', 'envConfig'));
+            return $redirect->route('LaravelInstaller::environmentWizard')->withInput()->withErrors($validator->errors());
+        }
+
+        if (!$this->checkDatabaseConnection($request)) {
+            return $redirect->route('LaravelInstaller::environmentWizard')->withInput()->withErrors([
+                'database_connection' => 'Could not connect to the database.',
+            ]);
         }
 
         $results = $this->EnvironmentManager->saveFileWizard($request);
@@ -103,4 +110,41 @@ public function saveWizard(Request $request, Redirector $redirect)
         return $redirect->route('LaravelInstaller::database')
                         ->with(['results' => $results]);
     }
+
+
+    /**
+     * Validate database connection with user credentials (Form Wizard).
+     *
+     * @param Request $request
+     * @return boolean
+     */
+    private function checkDatabaseConnection(Request $request)
+    {
+        $connection = $request->input('database_connection');
+
+        $settings = config("database.connections.$connection");
+
+        config([
+            'database' => [
+                'default' => $connection,
+                'connections' => [
+                    $connection => array_merge($settings, [
+                        'driver' => $connection,
+                        'host' => $request->input('database_hostname'),
+                        'port' => $request->input('database_port'),
+                        'database' => $request->input('database_name'),
+                        'username' => $request->input('database_username'),
+                        'password' => $request->input('database_password'),
+                    ]),
+                ],
+            ],
+        ]);
+
+        try {
+            DB::connection()->getPdo();
+            return true;
+        } catch (Exception $e) {
+            return false;
+        }
+    }
 }