<?php
/**
 * Page builders (Elementor, Divi, WPBakery, Beaver Builder, Bricks) keep the text outside the article body, in their own
 * data. Suiko can READ such an article (the rendered page), but writing it back would destroy the builder layout, so an
 * update is refused with a clear reason and the article is flagged in the list. Builder-aware writing is a later version.
 */
if ( ! defined( 'ABSPATH' ) ) {
	exit;
}

/** Name of the builder used for this post, or null. */
function suiko_builder_of( $post ) {
	$id = $post->ID;
	if ( 'builder' === get_post_meta( $id, '_elementor_edit_mode', true ) && get_post_meta( $id, '_elementor_data', true ) ) {
		return 'elementor';
	}
	if ( 'on' === get_post_meta( $id, '_et_pb_use_builder', true ) ) {
		return 'divi';
	}
	if ( 'on' === get_post_meta( $id, '_wpb_vc_js_status', true ) || false !== strpos( $post->post_content, '[vc_row' ) ) {
		return 'wpbakery';
	}
	if ( '1' === (string) get_post_meta( $id, '_fl_builder_enabled', true ) ) {
		return 'beaver';
	}
	if ( get_post_meta( $id, '_bricks_page_content_2', true ) ) {
		return 'bricks';
	}
	return apply_filters( 'suiko_builder_of', null, $post );
}

/** The text an Elementor page carries in its own data (headings and text widgets), as plain HTML; other builders: the body. */
function suiko_builder_text( $post ) {
	if ( 'elementor' !== suiko_builder_of( $post ) ) {
		return wpautop( strip_shortcodes( $post->post_content ) );
	}
	$data = json_decode( (string) get_post_meta( $post->ID, '_elementor_data', true ), true );
	$out  = array();
	$walk = function ( $nodes ) use ( &$walk, &$out ) {
		foreach ( (array) $nodes as $n ) {
			if ( ! is_array( $n ) ) {
				continue;
			}
			$s = isset( $n['settings'] ) && is_array( $n['settings'] ) ? $n['settings'] : array();
			if ( isset( $n['widgetType'] ) ) {
				if ( 'heading' === $n['widgetType'] && ! empty( $s['title'] ) ) {
					$tag   = isset( $s['header_size'] ) && preg_match( '/^h[1-6]$/', $s['header_size'] ) ? $s['header_size'] : 'h2';
					$out[] = '<' . $tag . '>' . wp_kses_post( $s['title'] ) . '</' . $tag . '>';
				} elseif ( in_array( $n['widgetType'], array( 'text-editor', 'theme-post-content' ), true ) && ! empty( $s['editor'] ) ) {
					$out[] = wp_kses_post( $s['editor'] );
				}
			}
			if ( ! empty( $n['elements'] ) ) {
				$walk( $n['elements'] );
			}
		}
	};
	$walk( $data );
	return implode( "\n", $out );
}