Added fallback translator (#14)

* Added fallback translator

* Code style

* removed line

Author: Nyholm

DependencyInjection/CompilerPass/ExternalTranslatorPass.php

@@ -0,0 +1,50 @@
+<?php
+
+/*
+ * This file is part of the PHP Translation package.
+ *
+ * (c) PHP Translation team <tobias.nyholm@gmail.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace Translation\Bundle\DependencyInjection\CompilerPass;
+
+use Symfony\Component\DependencyInjection\Compiler\CompilerPassInterface;
+use Symfony\Component\DependencyInjection\ContainerBuilder;
+use Symfony\Component\DependencyInjection\Definition;
+use Symfony\Component\DependencyInjection\Reference;
+
+/**
+ * @author Tobias Nyholm <tobias.nyholm@gmail.com>
+ */
+class ExternalTranslatorPass implements CompilerPassInterface
+{
+    public function process(ContainerBuilder $container)
+    {
+        /* @var Definition $def */
+        if (!$container->hasDefinition('php_translation.translator_service.external_translator')) {
+            return;
+        }
+
+        $services = $container->findTaggedServiceIds('php_translation.external_translator');
+        $translators = [];
+        foreach ($services as $id => $tags) {
+            foreach ($tags as $tag) {
+                if (!isset($tag['priority'])) {
+                    $tag['priority'] = 0;
+                }
+                $translators[$id] = $tag['priority'];
+            }
+        }
+
+        // Sort by priority
+        asort($translators);
+
+        $def = $container->getDefinition('php_translation.translator_service.external_translator');
+        foreach ($translators as $id => $prio) {
+            $def->addMethodCall('addTranslatorService', [new Reference($id)]);
+        }
+    }
+}

DependencyInjection/CompilerPass/ExtractorPass.php

@@ -16,6 +16,9 @@
 use Symfony\Component\DependencyInjection\Definition;
 use Symfony\Component\DependencyInjection\Reference;
 
+/**
+ * @author Tobias Nyholm <tobias.nyholm@gmail.com>
+ */
 class ExtractorPass implements CompilerPassInterface
 {
     public function process(ContainerBuilder $container)

DependencyInjection/Configuration.php

@@ -141,6 +141,15 @@ private function configsNode(ArrayNodeDefinition $root)
 
     private function addAutoTranslateNode(ArrayNodeDefinition $root)
     {
+        $root->children()
+            ->arrayNode('fallback_translation')
+                ->canBeEnabled()
+                ->children()
+                    ->enumNode('service')->values(['google', 'bing'])->defaultValue('google')->end()
+                    ->scalarNode('api_key')->defaultNull()->end()
+                ->end()
+            ->end()
+        ->end();
     }
 
     private function addTranslationServiceNode(ArrayNodeDefinition $root)

DependencyInjection/TranslationExtension.php

@@ -14,6 +14,7 @@
 use Symfony\Component\DependencyInjection\ContainerBuilder;
 use Symfony\Component\Config\FileLocator;
 use Symfony\Component\DependencyInjection\DefinitionDecorator;
+use Symfony\Component\DependencyInjection\Reference;
 use Symfony\Component\HttpKernel\DependencyInjection\Extension;
 use Symfony\Component\DependencyInjection\Loader;
 
@@ -43,6 +44,11 @@ public function load(array $configs, ContainerBuilder $container)
             $this->enableWebUi($container, $config);
         }
 
+        if ($config['fallback_translation']['enabled']) {
+            $loader->load('auto_translation.yml');
+            $this->enableFallbackAutoTranslator($container, $config);
+        }
+
         foreach ($config['configs'] as $name => &$c) {
             if (empty($c['project_root'])) {
                 $c['project_root'] = dirname($container->getParameter('kernel.root_dir'));
@@ -61,9 +67,15 @@ private function enableWebUi(ContainerBuilder $container, $config)
     {
     }
 
-    private function configureExtractors(ContainerBuilder $container, $config)
+    private function enableFallbackAutoTranslator(ContainerBuilder $container, $config)
     {
-        $def = $container->getDefinition('php_translation.extractor');
+        $externalTranslatorId = 'php_translation.translator_service.'.$config['fallback_translation']['service'];
+        $externalTranslatorDef = $container->getDefinition($externalTranslatorId);
+        $externalTranslatorDef->addTag('php_translation.external_translator');
+        $externalTranslatorDef->addArgument(new Reference($config['http_client']));
+        $externalTranslatorDef->addArgument(new Reference($config['message_factory']));
+
+        $container->setParameter('php_translation.translator_service.api_key', $config['fallback_translation']['api_key']);
     }
 
     public function getAlias()

Resources/config/auto_translation.yml

@@ -0,0 +1,21 @@
+services:
+  php_translator.fallback_translator:
+    class: Translation\Symfony\Translator\FallbackTranslator
+    public: false
+    decorates: 'translator'
+    decoration_priority: 10
+    arguments:
+      - "%php_translation.default_locale%"
+      - "@php_translator.fallback_translator.inner"
+      - "@php_translation.translator_service.external_translator"
+
+  php_translation.translator_service.external_translator:
+     class: Translation\Translator\Translator
+     arguments: []
+     calls:
+       - [ 'setLogger', ["@?logger"]]
+
+  # ----- Services ------
+  php_translation.translator_service.google:
+     class: Translation\Translator\Service\GoogleTranslator
+     arguments: ["%php_translation.translator_service.api_key%"]

TranslationBundle.php

@@ -13,12 +13,14 @@
 
 use Symfony\Component\DependencyInjection\ContainerBuilder;
 use Symfony\Component\HttpKernel\Bundle\Bundle;
+use Translation\Bundle\DependencyInjection\CompilerPass\ExternalTranslatorPass;
 use Translation\Bundle\DependencyInjection\CompilerPass\ExtractorPass;
 
 class TranslationBundle extends Bundle
 {
     public function build(ContainerBuilder $container)
     {
+        $container->addCompilerPass(new ExternalTranslatorPass());
         $container->addCompilerPass(new ExtractorPass());
     }
 }