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<?php
namespace Jet_Engine\Query_Builder\Rest;

use Jet_Engine\Query_Builder\Manager;

class Update_Preview extends \Jet_Engine_Base_API_Endpoint {

/**
	 * Returns route name
	 *
	 * @return string
	 */
	public function get_name() {
		return 'update-query-preview';
	}

/**
	 * API callback
	 *
	 * @return void
	 */
	public function callback( $request ) {

Manager::instance()->include_factory();

$params = $request->get_params();
		$type = ! empty( $params['query_type'] ) ? $params['query_type'] : false;

if ( ! $type ) {
			return rest_ensure_response( array(
				'success' => false,
				'data'    => null,
			) );
		}

$preview = ! empty( $params['preview'] ) ? $params['preview'] : array();

$this->setup_preview( $preview );

$factory = new \Jet_Engine\Query_Builder\Query_Factory( array(
			'id'     => $params['query_id'],
			'lables' => array( 'name' => 'Preview' ),
			'args'   => array(
				'query_type'         => $type,
				$type                => $params['query'],
				'__dynamic_' . $type => $params['dynamic_query'],
			),
		) );

$query = $factory->get_query();

$items = $query->get_items();
		$more  = '';
		$count = $query->get_items_total_count();

if ( 10 < $count ) {
			$items = array_slice( $items, 0, 10 );
			$more  = "\r\n...";
		}

return rest_ensure_response( array(
			'success' => true,
			'count'   => $query->get_items_total_count(),
			'data'    => $this->stringify_data( $items, $more ),
		) );

}

public function setup_preview( $preview = array() ) {

if ( ! empty( $preview['page'] ) ) {

global $wp_query, $post;

$pid = absint( $preview['page'] );
			$post = get_post( $pid );

if ( $post && 'page' === $post->post_type ) {
				$wp_query = new \WP_Query( array( 'page_id' => $pid ) );
			} elseif ( $post ) {
				$wp_query = new \WP_Query( array( 'p' => $pid ) );
			}

}

if ( ! empty( $preview['query_string'] ) ) {

parse_str( $preview['query_string'], $query_array );

if ( ! empty( $query_array ) ) {
				foreach ( $query_array as $key => $value ) {
					$_GET[ $key ]     = $value;
					$_REQUEST[ $key ] = $value;
				}
			}

}

public function stringify_data( $items = array(), $more = '' ) {
		ob_start();
		print_r( $items );
		return ob_get_clean() . $more;
	}

/**
	 * Returns endpoint request method - GET/POST/PUT/DELTE
	 *
	 * @return string
	 */
	public function get_method() {
		return 'POST';
	}

/**
	 * Check user access to current end-popint
	 *
	 * @return bool
	 */
	public function permission_callback( $request ) {
		return current_user_can( 'manage_options' );
	}

}