decorate ContextListener for flex stateless (#10)

Author: sashaaro

src/Security/EnableListenerDecorator.php

@@ -0,0 +1,32 @@
+<?php
+
+namespace FlexAuth\Security;
+
+use Symfony\Component\HttpKernel\Event\GetResponseEvent;
+use Symfony\Component\Security\Http\Firewall\ListenerInterface;
+
+/**
+ * Class EnableListenerDecorator
+ * Allow to switch off listener which was subscribed already
+ *
+ * @author Aleksandr Arofikin <sashaaro@gmail.com>
+ */
+abstract class EnableListenerDecorator implements ListenerInterface
+{
+    /** @var ListenerInterface */
+    protected $listener;
+
+    public function __construct(ListenerInterface $listener)
+    {
+        $this->listener = $listener;
+    }
+
+    public function handle(GetResponseEvent $event)
+    {
+        if ($this->isEnabled()) {
+            $this->listener->handle($event);
+        }
+    }
+
+    abstract public function isEnabled(): bool;
+}

src/Security/FlexAuthContextListenerDecorator.php

@@ -0,0 +1,42 @@
+<?php
+
+namespace FlexAuth\Security;
+
+use FlexAuth\FlexAuthTypeProviderInterface;
+use Symfony\Component\Security\Http\Firewall\ContextListener;
+
+/**
+ * Allow dynamically determinate firewall is stateless or not.
+ * Serve for switch between login via form with session authentication and jwt which stateless
+ *
+ * Class FlexAuthContextListenerDecorator
+ * @author Aleksandr Arofikin <sashaaro@gmail.com>
+ */
+class FlexAuthContextListenerDecorator extends EnableListenerDecorator
+{
+    /** @var FlexAuthTypeProviderInterface */
+    protected $authTypeProvider;
+
+    protected $statelessTypes = [];
+
+    public function __construct(ContextListener $contextListener, FlexAuthTypeProviderInterface $authTypeProvider)
+    {
+        parent::__construct($contextListener);
+        $this->authTypeProvider = $authTypeProvider;
+    }
+
+    public function isEnabled(): bool
+    {
+        return !$this->isStateless();
+    }
+
+    private function isStateless()
+    {
+        return in_array($this->authTypeProvider->provide()['type'], $this->statelessTypes, true);
+    }
+
+    public function addStatelessType(string $type)
+    {
+        $this->statelessTypes[] = $type;
+    }
+}