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<?php
/**
 * Element
 *
 * @package   WP Grid Builder - Bricks
 * @author    Loïc Blascos
 * @copyright 2019-2022 Loïc Blascos
 */

namespace WP_Grid_Builder_Bricks\Includes;

// Exit if accessed directly.
if ( ! defined( 'ABSPATH' ) ) {
	exit;
}

/**
 * Element
 *
 * @class WP_Grid_Builder_Bricks\Includes\Element
 * @since 1.0.0
 */
final class Element {

use Helpers;

/**
	 * Holds template attributes
	 *
	 * @since 1.0.0
	 * @access protected
	 * @var array
	 */
	protected $template = [];

/**
	 * Holds elements to render
	 *
	 * @since 1.0.0
	 * @access protected
	 * @var array
	 */
	protected $elements = [];

/**
	 * Constructor
	 *
	 * @since 1.0.0
	 * @access public
	 *
	 * @param array $template Holds template attributes.
	 */
	public function __construct( $template ) {

$this->template = $template;

}

/**
	 * Parse Bricks elements to match the one filterable
	 *
	 * @since 1.0.0
	 * @access public
	 *
	 * @return string
	 */
	public function get_content() {

$content = '';

$this->get_elements();

foreach ( $this->elements as $element ) {

$content = $this->get_element( $element );

if ( ! empty( $content ) ) {
				break;
			}
		}

return $content;

}

/**
	 * Get content from Bricks
	 *
	 * @since 1.0.0
	 * @access public
	 *
	 * @return array
	 */
	public function get_elements() {

// If we render facets in the editor.
		if ( ! empty( $this->template['elements'] ) ) {

$this->elements = $this->template['elements'];
			return;

}

if ( empty( $this->template['post_id'] ) ) {
			return;
		}

foreach ( $this->template['post_id'] as $post_id ) {

$this->elements = array_merge(
				$this->elements,
				$this->get_bricks_data( $post_id )
			);
		}

$this->elements = array_filter( $this->elements );

}

/**
	 * Get filterable element
	 *
	 * @since 1.0.0
	 * @access public
	 *
	 * @param array $element Holds element attributes.
	 * @return array
	 */
	public function get_element( $element ) {

if ( ! isset( $element['id'], $element['settings'] ) ) {
			return '';
		}

if ( 'bricks-element-' . $element['id'] !== $this->template['id'] ) {
			return '';
		}

// We setup element to filter to handle it correctly.
		apply_filters( 'wp_grid_builder_bricks/setup_element', $this->template['id'] );

$element['settings'] = array_merge( $element['settings'], $this->template );

// Render only the element without parent context.
		unset( $element['parent'] );

$elements = array_merge( [ $element ], $this->get_children( $element ) );

// Not properly rendered because of bricks_is_builder_call() that returns true for any Ajax or REST API request.
		return \Bricks\Frontend::render_data( array_filter( $elements ) );

}

/**
	 * Get children element from parent element
	 *
	 * @since 1.0.0
	 * @access public
	 *
	 * @param array $parent Holds parent element attributes.
	 * @return array
	 */
	public function get_children( $parent ) {

$children = [];

if ( empty( $parent['children'] ) ) {
			return $children;
		}

foreach ( $this->elements as $element ) {

if ( in_array( $element['id'], $parent['children'], true ) ) {

$children[] = $element;
				$children   = array_merge( $children, $this->get_children( $element ) );

}
		}

return $children;

}
}