added CategoriesCollection

src/CategoriesCollection.php

@@ -0,0 +1,24 @@
+<?php
+declare(strict_types=1);
+
+namespace Nexendrie\Rss;
+
+use Nexendrie\Utils\Collection as BaseCollection;
+
+/**
+ * CategoriesCollection
+ *
+ * @author Jakub Konečný
+ * @internal
+ */
+final class CategoriesCollection extends BaseCollection implements IXmlConvertible {
+  /** @var string */
+  protected $class = Category::class;
+
+  public function appendToXml(\SimpleXMLElement &$parent): void {
+    array_walk($this->items, function(Category $value) use($parent) {
+      $value->appendToXml($parent);
+    });
+  }
+}
+?>

src/Generator.php

@@ -158,6 +158,9 @@ protected function configureOptions(OptionsResolver $resolver): void {
     });
     $resolver->setAllowedTypes("rating", "string");
     $resolver->setAllowedTypes("categories", Category::class . "[]");
+    $resolver->setNormalizer("categories", function(Options $options, array $value) {
+      return CategoriesCollection::fromArray($value);
+    });
     $resolver->setAllowedTypes("skipDays", "string[]");
     $resolver->setAllowedValues("skipDays", function(array $value) {
       $allowedValues = ["Monday", "Tuesday", "Wednesday", "Thursday", "Friday", "Saturday", "Sunday", ];
@@ -194,9 +197,7 @@ public function generate(array $info): string {
     $info = $resolver->resolve($info);
     /** @var \SimpleXMLElement $channel */
     $channel = simplexml_load_file($this->template);
-    $properties = array_filter($resolver->getDefinedOptions(), function(string $value) {
-      return !in_array($value, ["categories", ], true);
-    });
+    $properties = $resolver->getDefinedOptions();
     foreach($properties as $property) {
       $this->writeProperty($channel, $info, $property);
     }
@@ -206,10 +207,6 @@ public function generate(array $info): string {
     if($this->docs !== "") {
       $channel->channel->docs = $this->docs;
     }
-    $categories =  Arrays::get($info, "categories", []);
-    array_walk($categories, function(Category $value) use($channel) {
-      $value->appendToXml($channel->channel);
-    });
     /** @var RssChannelItem $item */
     foreach($items as $item) {
       /** @var \SimpleXMLElement $i */

src/RssChannelItem.php

@@ -38,7 +38,7 @@ class RssChannelItem {
   protected $guid = "";
   /** @var \stdClass */
   protected $source;
-  /** @var \Nexendrie\Utils\Collection|Category[] */
+  /** @var CategoriesCollection|Category[] */
   protected $categories;
   /** @var \Nexendrie\Utils\Collection|Enclosure[] */
   protected $enclosures;
@@ -48,16 +48,7 @@ public function __construct(string $title, string $description, string $link, in
     $this->description = $description;
     $this->link = $link;
     $this->pubDate = $pubDate;
-    $this->categories = new class extends \Nexendrie\Utils\Collection implements IXmlConvertible {
-      /** @var string */
-      protected $class = Category::class;
-
-      public function appendToXml(\SimpleXMLElement &$parent): void {
-        array_walk($this->items, function(Category $value) use($parent) {
-          $value->appendToXml($parent);
-        });
-      }
-    };
+    $this->categories = new CategoriesCollection();
     $this->enclosures = new class extends \Nexendrie\Utils\Collection implements IXmlConvertible {
       /** @var string */
       protected $class = Enclosure::class;