MultilingualPress Integration

src/Integrations/MultilingualPress.php

@@ -0,0 +1,68 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Itineris\PageAsPostTypeArchive\Integrations;
+
+/**
+ * Inpsyde MultilingualPress integration.
+ */
+
+final class MultilingualPress {
+    public function __construct()
+    {
+        if (
+            ! is_plugin_active('multilingualpress/multilingualpress.php')
+            || ! class_exists('\Inpsyde\MultilingualPress\Framework\Api\Translation')
+        )
+        {
+            return;
+        }
+
+        add_filter(
+            \Inpsyde\MultilingualPress\Framework\Api\Translation::FILTER_URL,
+            [$this, 'translateMultilingualPressArchivePageUrl'],
+            10,
+            4,
+        );
+    }
+
+    public static function init(): self
+    {
+        return new self();
+    }
+
+    /**
+     * MultilingualPress Archive Page URL translation.
+     *
+     * @param string $remoteUrl
+     * @param int $remoteSiteId
+     * @param int $remoteContentId
+     * @param \Inpsyde\MultilingualPress\Framework\Api\Translation $translation
+     * @return string
+     */
+    public static function translateMultilingualPressArchivePageUrl(
+        string $remoteUrl,
+        int $remoteSiteId,
+        int $remoteContentId,
+        \Inpsyde\MultilingualPress\Framework\Api\Translation $translation
+    ): string {
+        if (
+            ! class_exists('\Inpsyde\MultilingualPress\Framework\WordpressContext')
+            || ! is_archive()
+            || \Inpsyde\MultilingualPress\Framework\WordpressContext::TYPE_POST_TYPE_ARCHIVE !== $translation->type()
+        ) {
+            return $remoteUrl;
+        }
+
+        $postType = get_queried_post_type();
+        switch_to_blog($remoteSiteId);
+        $remoteArchivePageId = get_archive_page_id($postType);
+        if (0 !== $remoteArchivePageId) {
+            $remoteUrl = get_permalink($remoteArchivePageId);
+        }
+        restore_current_blog();
+
+        return $remoteUrl;
+    }
+}

src/Types/CustomPostType.php

@@ -4,6 +4,7 @@
 
 namespace Itineris\PageAsPostTypeArchive\Types;
 
+use Itineris\PageAsPostTypeArchive\Integrations\MultilingualPress;
 use WP_Post;
 use WP_Post_Type;
 
@@ -18,6 +19,13 @@ class CustomPostType extends AbstractType {
 	 */
 	public ?array $archivePages = null;
 
+    /**
+     * @var array|\class-string[] $integrations
+     */
+    public array $integrations = [
+        MultilingualPress::class,
+    ];
+
 	public function __construct()
 	{
 		add_filter('display_post_states', [$this, 'addPageStates'], 10, 2);
@@ -27,6 +35,10 @@ public function __construct()
 		add_action('admin_init', [$this, 'addCustomPostTypePageSelectorOptions']);
 		add_action('deleted_post', [$this, 'deletedPost']);
 		add_action('transition_post_status', [$this, 'transitionPostStatus'], 10, 3);
+
+        foreach ($this->integrations as $integration) {
+            $integration::init();
+        }
 	}
 
 	/**