Add blog configuration and extension dependency injection

[blogbundle] / DependencyInjection / RapsysBlogExtension.php

diff --git a/DependencyInjection/RapsysBlogExtension.php b/DependencyInjection/RapsysBlogExtension.php
new file mode 100644 (file)
index 0000000..d464df4
--- /dev/null
+++ b/DependencyInjection/RapsysBlogExtension.php
@@ -0,0 +1,100 @@
+<?php declare(strict_types=1);
+
+/*
+ * This file is part of the Rapsys BlogBundle package.
+ *
+ * (c) Raphaël Gertz <symfony@rapsys.eu>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace Rapsys\BlogBundle\DependencyInjection;
+
+use Symfony\Component\DependencyInjection\ContainerBuilder;
+use Symfony\Component\DependencyInjection\Extension\Extension;
+use Symfony\Component\DependencyInjection\Extension\PrependExtensionInterface;
+use Symfony\Component\Translation\Loader\ArrayLoader;
+
+use Rapsys\BlogBundle\RapsysBlogBundle;
+
+/**
+ * This is the class that loads and manages your bundle configuration.
+ *
+ * @link http://symfony.com/doc/current/cookbook/bundles/extension.html
+ */
+class RapsysBlogExtension extends Extension implements PrependExtensionInterface {
+       /**
+        * Prepend the configuration
+        *
+        * @desc Preload the configuration to allow sourcing as parameters
+        * {@inheritdoc}
+        */
+       public function prepend(ContainerBuilder $container): void {
+               //Process the configuration
+               $configs = $container->getExtensionConfig($this->getAlias());
+
+               //Load configuration
+               $configuration = $this->getConfiguration($configs, $container);
+
+               //Process the configuration to get merged config
+               $config = $this->processConfiguration($configuration, $configs);
+
+               //Detect when no user configuration is provided
+               if ($configs === [[]]) {
+                       //Prepend default config
+                       $container->prependExtensionConfig($this->getAlias(), $config);
+               }
+
+               //Save configuration in parameters
+               $container->setParameter($this->getAlias(), $config);
+
+               //Store flattened array in parameters
+               //XXX: don't flatten rapsys_blog.icon.png key which is required to be an array
+               foreach($this->flatten($config, $this->getAlias(), 10, '.', ['rapsys_blog.icon.png', 'rapsys_blog.facebook.apps', 'rapsys_blog.locales', 'rapsys_blog.languages']) as $k => $v) {
+                       $container->setParameter($k, $v);
+               }
+       }
+
+       /**
+        * {@inheritdoc}
+        */
+       public function load(array $configs, ContainerBuilder $container): void {
+       }
+
+       /**
+        * {@inheritdoc}
+        */
+       public function getAlias(): string {
+               return RapsysBlogBundle::getAlias();
+       }
+
+       /**
+        * The function that parses the array to flatten it into a one level depth array
+        *
+        * @param $array The config values array
+        * @param $path The current key path
+        * @param $depth The maxmium depth
+        * @param $sep The separator string
+        * @param $skip The skipped paths array
+        * @return array The result array
+        */
+       protected function flatten($array, $path = '', $depth = 10, $sep = '.', $skip = []): array {
+               //Init res
+               $res = [];
+
+               //Flatten hashed array until depth reach zero
+               if ($depth && is_array($array) && $array !== [] && !in_array($path, $skip)) {
+                       foreach($array as $k => $v) {
+                               $sub = $path ? $path.$sep.$k:$k;
+                               $res += $this->flatten($v, $sub, $depth - 1, $sep, $skip);
+                       }
+               //Pass scalar value directly
+               } else {
+                       $res[$path] = $array;
+               }
+
+               //Return result
+               return $res;
+       }
+}