Add tagged services for import

- list services in /import
- add url to import service
- ImportBundle routing are now prefixed by /import
- optimize flush in each import (flushing each 20 contents)
- improve design of each import
- add more tests

src/Wallabag/ImportBundle/Import/ImportChain.php

@@ -0,0 +1,34 @@
+<?php
+
+namespace Wallabag\ImportBundle\Import;
+
+class ImportChain
+{
+    private $imports;
+
+    public function __construct()
+    {
+        $this->imports = [];
+    }
+
+    /**
+     * Add an import to the chain.
+     *
+     * @param ImportInterface $import
+     * @param string          $alias
+     */
+    public function addImport(ImportInterface $import, $alias)
+    {
+        $this->imports[$alias] = $import;
+    }
+
+    /**
+     * Get all imports.
+     *
+     * @return array<ImportInterface>
+     */
+    public function getAll()
+    {
+        return $this->imports;
+    }
+}

src/Wallabag/ImportBundle/Import/ImportCompilerPass.php

@@ -0,0 +1,33 @@
+<?php
+
+namespace Wallabag\ImportBundle\Import;
+
+use Symfony\Component\DependencyInjection\ContainerBuilder;
+use Symfony\Component\DependencyInjection\Compiler\CompilerPassInterface;
+use Symfony\Component\DependencyInjection\Reference;
+
+class ImportCompilerPass implements CompilerPassInterface
+{
+    public function process(ContainerBuilder $container)
+    {
+        if (!$container->hasDefinition('wallabag_import.chain')) {
+            return;
+        }
+
+        $definition = $container->getDefinition(
+            'wallabag_import.chain'
+        );
+
+        $taggedServices = $container->findTaggedServiceIds(
+            'wallabag_import.import'
+        );
+        foreach ($taggedServices as $id => $tagAttributes) {
+            foreach ($tagAttributes as $attributes) {
+                $definition->addMethodCall(
+                    'addImport',
+                    [new Reference($id), $attributes['alias']]
+                );
+            }
+        }
+    }
+}

src/Wallabag/ImportBundle/Import/ImportInterface.php

@@ -13,6 +13,13 @@ interface ImportInterface extends LoggerAwareInterface
      */
     public function getName();
 
+    /**
+     * Url to start the import.
+     *
+     * @return string
+     */
+    public function getUrl();
+
     /**
      * Description of the import.
      *

src/Wallabag/ImportBundle/Import/PocketImport.php

@@ -45,12 +45,20 @@ class PocketImport implements ImportInterface
         return 'Pocket';
     }
 
+    /**
+     * {@inheritdoc}
+     */
+    public function getUrl()
+    {
+        return 'import_pocket';
+    }
+
     /**
      * {@inheritdoc}
      */
     public function getDescription()
     {
-        return 'This importer will import all your <a href="https://getpocket.com">Pocket</a> data.';
+        return 'This importer will import all your <a href="https://getpocket.com">Pocket</a> data. Pocket doesn\'t allow us to retrieve content from their service, so the readable content of each article will be re-fetched by Wallabag.';
     }
 
     /**
@@ -196,6 +204,8 @@ class PocketImport implements ImportInterface
      */
     private function parseEntries($entries)
     {
+        $i = 1;
+
         foreach ($entries as $pocketEntry) {
             $url = isset($pocketEntry['resolved_url']) && $pocketEntry['resolved_url'] != '' ? $pocketEntry['resolved_url'] : $pocketEntry['given_url'];
 
@@ -241,6 +251,12 @@ class PocketImport implements ImportInterface
 
             $this->em->persist($entry);
             ++$this->importedEntries;
+
+            // flush every 20 entries
+            if (($i % 20) === 0) {
+                $em->flush();
+            }
+            ++$i;
         }
 
         $this->em->flush();

src/Wallabag/ImportBundle/Import/WallabagV1Import.php

@@ -50,12 +50,20 @@ class WallabagV1Import implements ImportInterface
         return 'Wallabag v1';
     }
 
+    /**
+     * {@inheritdoc}
+     */
+    public function getUrl()
+    {
+        return 'import_wallabag_v1';
+    }
+
     /**
      * {@inheritdoc}
      */
     public function getDescription()
     {
-        return 'This importer will import all your wallabag v1 articles.';
+        return 'This importer will import all your wallabag v1 articles. On your config page, click on "JSON export" in the "Export your wallabag data" section. You will have a "wallabag-export-1-xxxx-xx-xx.json" file.';
     }
 
     /**
@@ -75,7 +83,13 @@ class WallabagV1Import implements ImportInterface
             return false;
         }
 
-        $this->parseEntries(json_decode(file_get_contents($this->filepath), true));
+        $data = json_decode(file_get_contents($this->filepath), true);
+
+        if (empty($data)) {
+            return false;
+        }
+
+        $this->parseEntries($data);
 
         return true;
     }
@@ -108,6 +122,8 @@ class WallabagV1Import implements ImportInterface
      */
     private function parseEntries($entries)
     {
+        $i = 1;
+
         foreach ($entries as $importedEntry) {
             $existingEntry = $this->em
                 ->getRepository('WallabagCoreBundle:Entry')
@@ -130,6 +146,12 @@ class WallabagV1Import implements ImportInterface
 
             $this->em->persist($entry);
             ++$this->importedEntries;
+
+            // flush every 20 entries
+            if (($i % 20) === 0) {
+                $em->flush();
+            }
+            ++$i;
         }
 
         $this->em->flush();