wp_ajax_image_editor() WordPress Function

function wp_ajax_image_editor() {
	$attachment_id = (int) $_POST['postid'];

	if ( empty( $attachment_id ) || ! current_user_can( 'edit_post', $attachment_id ) ) {
		wp_die( -1 );
	}

	check_ajax_referer( "image_editor-$attachment_id" );
	include_once ABSPATH . 'wp-admin/includes/image-edit.php';

	$msg = false;

	switch ( $_POST['do'] ) {
		case 'save':
			$msg = wp_save_image( $attachment_id );
			if ( ! empty( $msg->error ) ) {
				wp_send_json_error( $msg );
			}

			wp_send_json_success( $msg );
			break;
		case 'scale':
			$msg = wp_save_image( $attachment_id );
			break;
		case 'restore':
			$msg = wp_restore_image( $attachment_id );
			break;
	}

	ob_start();
	wp_image_editor( $attachment_id, $msg );
	$html = ob_get_clean();

	if ( ! empty( $msg->error ) ) {
		wp_send_json_error(
			array(
				'message' => $msg,
				'html'    => $html,
			)
		);
	}

	wp_send_json_success(
		array(
			'message' => $msg,
			'html'    => $html,
		)
	);
}