From df6360044b5c2396b2bee0dfa9e8d744bfa424d5 Mon Sep 17 00:00:00 2001
From: Igor Scheller <igor.scheller@igorshp.de>
Date: Sun, 26 Aug 2018 12:23:47 +0200
Subject: Added Twig template functions

---
 src/Renderer/TwigServiceProvider.php | 44 ++++++++++++++++++++++++++++++++++++
 1 file changed, 44 insertions(+)

(limited to 'src/Renderer/TwigServiceProvider.php')

diff --git a/src/Renderer/TwigServiceProvider.php b/src/Renderer/TwigServiceProvider.php
index 23810863..4a5b1de3 100644
--- a/src/Renderer/TwigServiceProvider.php
+++ b/src/Renderer/TwigServiceProvider.php
@@ -3,14 +3,40 @@
 namespace Engelsystem\Renderer;
 
 use Engelsystem\Container\ServiceProvider;
+use Engelsystem\Renderer\Twig\Extensions\Config;
+use Engelsystem\Renderer\Twig\Extensions\Globals;
+use Engelsystem\Renderer\Twig\Extensions\Session;
+use Engelsystem\Renderer\Twig\Extensions\Url;
 use Twig_Environment as Twig;
 use Twig_LoaderInterface as TwigLoaderInterface;
 
 class TwigServiceProvider extends ServiceProvider
 {
+    /** @var array */
+    protected $extensions = [
+        'config'  => Config::class,
+        'globals' => Globals::class,
+        'session' => Session::class,
+        'url'     => Url::class,
+    ];
+
     public function register()
     {
         $this->registerTwigEngine();
+
+        foreach ($this->extensions as $alias => $class) {
+            $this->registerTwigExtensions($class, $alias);
+        }
+    }
+
+    public function boot()
+    {
+        /** @var Twig $renderer */
+        $renderer = $this->app->get('twig.environment');
+
+        foreach ($this->app->tagged('twig.extension') as $extension) {
+            $renderer->addExtension($extension);
+        }
     }
 
     protected function registerTwigEngine()
@@ -20,12 +46,30 @@ class TwigServiceProvider extends ServiceProvider
         $twigLoader = $this->app->make(TwigLoader::class, ['paths' => $viewsPath]);
         $this->app->instance(TwigLoader::class, $twigLoader);
         $this->app->instance(TwigLoaderInterface::class, $twigLoader);
+        $this->app->instance('twig.loader', $twigLoader);
 
         $twig = $this->app->make(Twig::class);
         $this->app->instance(Twig::class, $twig);
+        $this->app->instance('twig.environment', $twig);
 
         $twigEngine = $this->app->make(TwigEngine::class);
         $this->app->instance('renderer.twigEngine', $twigEngine);
         $this->app->tag('renderer.twigEngine', ['renderer.engine']);
     }
+
+    /**
+     * @param string $class
+     * @param string $alias
+     */
+    protected function registerTwigExtensions($class, $alias)
+    {
+        $alias = 'twig.extension.' . $alias;
+
+        $extension = $this->app->make($class);
+
+        $this->app->instance($class, $extension);
+        $this->app->instance($alias, $extension);
+
+        $this->app->tag($alias, ['twig.extension']);
+    }
 }
-- 
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