<?php
/**
* Class Feed
*
* @link https://github.com/googleforcreators/web-stories-wp
*
* @copyright 2020 Google LLC
* @license https://www.apache.org/licenses/LICENSE-2.0 Apache License 2.0
*/
/**
* Copyright 2020 Google LLC
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* https://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
namespace Google\Web_Stories\Renderer;
use Google\Web_Stories\Model\Story;
use Google\Web_Stories\Renderer\Story\Image;
use Google\Web_Stories\Service_Base;
use Google\Web_Stories\Story_Post_Type;
use WP_Post;
/**
* Class Feed
*/
class Feed extends Service_Base {
/**
* Filter RSS content fields.
*
* @since 1.7.0
*/
public function register(): void {
add_filter( 'the_content_feed', [ $this, 'embed_image' ] );
add_filter( 'the_excerpt_rss', [ $this, 'embed_image' ] );
}
/**
* Filter feed content for stories to render as an image.
*
* @since 1.0.0
*
* @param string|mixed $content Feed content.
* @return string|mixed
*/
public function embed_image( $content ) {
$post = get_post();
if ( $post instanceof WP_Post && Story_Post_Type::POST_TYPE_SLUG === $post->post_type ) {
$story = new Story();
$story->load_from_post( $post );
$image = new Image( $story );
$content = $image->render();
}
return $content;
}
}