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✏️ Editing: class-post-generic.php

<?php

namespace GigaAI\Shortcode;

if ( ! defined( 'ABSPATH' ) ) {
	exit;
}

class Post_Generic
{
	/**
	 * @var array
	 */
	private $keys = [
		// In query
		'error',
		'm',
		'p',
		'post_parent',
		'subpost',
		'subpost_id',
		'attachment',
		'attachment_id',
		'name',
		'static',
		'pagename',
		'page_id',
		'second',
		'minute',
		'hour',
		'day',
		'monthnum',
		'year',
		'w',
		'category_name',
		'tag',
		'cat',
		'tag_id',
		'author',
		'author_name',
		'feed',
		'tb',
		'paged',
		'meta_key',
		'meta_value',
		'preview',
		's',
		'sentence',
		'fields',
		'menu_order',
		'embed',

// Others
		'post_type',
		'cache_results',
		'comment_status',
		'comments_per_page',
		'exact',
		'ignore_sticky_posts',
		'meta_compare',
		'meta_value_num',
		'menu_order',
		'no_paging',
		'no_found_rows',
		'offset',
		'order',
		'orderby',
		'page',
		'perm',
		'ping_status',
		'post_status',
        
        // Only available in Giga AI
        'tax'
	];

public function __construct()
	{
		add_shortcode( 'post-generic', [ $this, 'post_generic' ] );
	}

public function post_generic( $atts = [ ] )
	{
		$bubbles = [ ];

$atts = wp_parse_args( $atts, [
			'query_args'    => [ ],
			'title'         => 'post_title',
			'subtitle'      => 'post_excerpt',
			'image_url'     => 'thumbnail',
			'limit'         => 6,
			'no_found_rows' => true, // Skip count the found row for better performance
			'buttons'       => 'View, web_url, permalink'
		] );

$fields = [ 'title', 'subtitle', 'image_url' ];

// Bind $this->keys to query_args if not set
		$query_args = $this->parse_query_args( $atts );
        
		$posts = get_posts( $query_args );
        
		foreach ( $posts as $post ) {
			setup_postdata( $post );

$bubble = [ ];

foreach ( $fields as $field ) {
				if ( ! array_key_exists( $field, $atts ) ) {
					continue;
				}

$field_value = $this->get_binding_field( $post, $atts[ $field ] );

// If $field is image_url but URL is not valid. Skip it.
				if ( $field === 'image_url' && ! filter_var( $field_value, FILTER_VALIDATE_URL ) ) {
					continue;
				}

if ( ! empty( $field_value ) ) {
					$bubble[ $field ] = $field_value;
				}
			}

$bubble['buttons'] = $this->parse_buttons( $atts['buttons'], $post );

$bubbles[] = $bubble;
		}

wp_reset_postdata();

return json_encode( $bubbles );
	}

/**
	 * Parse simple query args.
	 *
	 * @param $atts
	 *
	 * @return array|mixed|object
	 */
	private function parse_query_args( $atts )
	{
		// If is json. Parse it!
		if ( ! is_array( $atts['query_args'] ) ) {
			$arr = @json_decode( $atts['query_args'], true );

if ( is_array( $arr ) ) {
				$atts['query_args'] = $arr;
			}
		}

$query_args = $atts['query_args'];

if ( is_numeric( $atts['limit'] ) && $atts['limit'] <= 6 && $atts['limit'] > 0 && ! isset( $query_args['posts_per_page'] ) ) {
			$query_args['posts_per_page'] = $atts['limit'];
		}

foreach ( $atts as $key => $value ) {
			if ( in_array( $key, $this->keys ) ) {
				$query_args[ $key ] = $value;
			}
		}

return $query_args;
	}

private function get_binding_field( $post, $field )
	{
		if ( $field === 'the_excerpt' ) {
			return get_the_excerpt( $post );
		}

if ( $field === 'thumbnail' && has_post_thumbnail( $post->ID ) ) {
			$image = wp_get_attachment_image_src( get_post_thumbnail_id( $post->ID ), 'single-post-thumbnail' );

return $image[0];
		}

if ( isset( $post->{$field} ) ) {
			return $post->{$field};
		}

$post_meta = get_post_meta( $post->ID, $field, true );

if ( isset( $post_meta ) && is_string( $post_meta ) ) {
			return $post_meta;
		}

return '';
	}

/**
	 * Parse button from pipe string to array
	 * Example: View, web_url, permalink|Buy, postback, BUY_NOW
	 *
	 * @param String $buttons
	 * @param \WP_Post $post
	 *
	 * @return array
	 */
	private function parse_buttons( $buttons, $post = null )
	{
		$buttons = explode( '|', $buttons );

$buttons = array_map( function ( $button ) use ( $post ) {

$params = array_map( 'trim', explode( ',', $button ) );

$button = [
				'title' => $params[0],
				'type'  => $params[1],
			];

if ( $button['type'] === 'postback' ) {
				$button['payload'] = $params[2];
			}

if ( $button['type'] === 'web_url' ) {
				if ( $params[2] === 'permalink' ) {
					$params[2] = get_permalink( $post );
				}

if ( filter_var( $params[2], FILTER_VALIDATE_URL ) ) {
					$button['url'] = $params[2];
				}
			}

return $button;

}, $buttons );

return $buttons;
	}
}

new Post_Generic;

MR SKB