(feat): live preview

CHANGELOG.md

@@ -7,6 +7,11 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ## Version [2.0.10]
 
+### Feat
+
+- Add preview parameter for retrieving drafts
+- Purge Varnish on save_post
+
 ### Fix
 
 -  Add addHighlightedParameters to active items

config/core.php

@@ -3,10 +3,10 @@
 return [
 
     /**
-             * Service Providers.
-         */
+    * Service Providers.
+    */
     'providers'    => [
-        /**
+    /**
      * Global providers.
      */
         OWC\OpenPub\Base\PostType\PostTypeServiceProvider::class,
@@ -15,6 +15,9 @@
         OWC\OpenPub\Base\Metabox\MetaboxServiceProvider::class,
         OWC\OpenPub\Base\RestAPI\RestAPIServiceProvider::class,
         OWC\OpenPub\Base\ElasticPress\ElasticPressServiceProvider::class,
+        OWC\OpenPub\Base\Admin\AdminServiceProvider::class,
+        OWC\OpenPub\Base\Varnish\VarnishServiceProvider::class,
+
         /**
          * Providers specific to the admin.
          */

src/Base/Admin/AdminServiceProvider.php

@@ -0,0 +1,38 @@
+<?php
+
+namespace OWC\OpenPub\Base\Admin;
+
+use OWC\OpenPub\Base\Foundation\ServiceProvider;
+use OWC\OpenPub\Base\Models\Item;
+
+class AdminServiceProvider extends ServiceProvider
+{
+    public function register()
+    {
+        $this->plugin->loader->addAction('preview_post_link', $this, 'filterPostLink', 10, 10, 2);
+        $this->plugin->loader->addAction('rest_prepare_pdc-item', $this, 'restPrepareResponseLink', 10, 2);
+    }
+
+    /**
+     * Changes the url user for live preview to the portal url.
+     * Works in the old editor (not gutenberg)
+     */
+    public function filterPostLink($link, \WP_Post $post): string
+    {
+        $itemModel = Item::makeFrom($post);
+        $url = $itemModel->getPortalURL();
+        return $url . "?preview=true";
+    }
+
+    /**
+     * Changes the url used for live preview to the portal url.
+     * Works in the gutenberg editor.
+     */
+    public function restPrepareResponseLink(\WP_REST_Response $response, \WP_Post $post): \WP_REST_Response
+    {
+        $itemModel = Item::makeFrom($post);
+        $response->data['link'] = $itemModel->getPortalURL() ?? '';
+
+        return $response;
+    }
+}

src/Base/Repositories/AbstractRepository.php

@@ -227,12 +227,13 @@ public static function getGlobalFields(): array
     public function transform(WP_Post $post)
     {
         $data = [
-            'id'      => $post->ID,
-            'title'   => $post->post_title,
-            'content' => apply_filters('the_content', $post->post_content),
-            'excerpt' => $post->post_excerpt,
-            'date'    => $post->post_date,
-            'slug'    => $post->post_name
+            'id'          => $post->ID,
+            'title'       => $post->post_title,
+            'content'     => apply_filters('the_content', $post->post_content),
+            'excerpt'     => $post->post_excerpt,
+            'date'        => $post->post_date,
+            'slug'        => $post->post_name,
+            'post_status' => $post->post_status
         ];
 
         $data = $this->assignFields($data, $post);

src/Base/RestAPI/Controllers/ItemController.php

@@ -63,9 +63,9 @@ public function getItem(WP_REST_Request $request)
     {
         $id = (int) $request->get_param('id');
 
-        $item = (new Item)
-            ->query(apply_filters('owc/openpub/rest-api/items/query/single', []))
-            ->find($id);
+        $item = $this->singleItemQueryBuilder($request);
+
+        $item = $item->find($id);
 
         if (!$item) {
             return new WP_Error('no_item_found', sprintf('Item with ID "%d" not found (anymore)', $id), [
@@ -89,9 +89,9 @@ public function getItemBySlug(WP_REST_Request $request)
     {
         $slug = $request->get_param('slug');
 
-        $item = (new Item)
-            ->query(apply_filters('owc/openpub/rest-api/items/query/single', []))
-            ->findBySlug($slug);
+        $item = $this->singleItemQueryBuilder($request);
+
+        $item = $item->findBySlug($slug);
 
         if (!$item) {
             return new WP_Error('no_item_found', sprintf('Item with slug "%d" not found', $slug), [
@@ -104,6 +104,20 @@ public function getItemBySlug(WP_REST_Request $request)
         return $item;
     }
 
+    public function singleItemQueryBuilder(WP_REST_Request $request): Item
+    {
+        $item = (new Item)
+            ->query(apply_filters('owc/openpub/rest-api/items/query/single', []));
+
+        $preview = filter_var($request->get_param('preview'), FILTER_VALIDATE_BOOLEAN);
+
+        if (true === $preview) {
+            $item->query(['post_status' => ['publish', 'draft']]);
+        }
+
+        return $item;
+    }
+
     /**
      * Get related items
      */

src/Base/Varnish/VarnishServiceProvider.php

@@ -0,0 +1,33 @@
+<?php
+
+namespace OWC\OpenPub\Base\Varnish;
+
+use OWC\OpenPub\Base\Foundation\ServiceProvider;
+
+class VarnishServiceProvider extends ServiceProvider
+{
+    public function register(): void
+    {
+        $this->plugin->loader->addAction('save_post', $this, 'purgeVarnishCache', 10, 2);
+    }
+
+    public function purgeVarnishCache(int $postID, \WP_Post $post): void
+    {
+        if ( ! function_exists('curl_init')){
+            return;
+        }
+
+        $ch = curl_init();
+
+        curl_setopt($ch, CURLOPT_URL, 'http://127.0.0.1/.*');
+        curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
+        curl_setopt($ch, CURLOPT_CUSTOMREQUEST, 'PURGE');
+
+        $headers = [];
+        $headers[] = 'Host: '. \parse_url(get_site_url(), PHP_URL_HOST);
+        curl_setopt($ch, CURLOPT_HTTPHEADER, $headers);
+
+        curl_exec($ch);
+        curl_close($ch);
+    }
+}