<?php

namespace Tpwd\KeSearch\Utility;

use TYPO3\CMS\Core\Utility\GeneralUtility;

class ContentUtility
{
    /**
     * Returns an indexable string without tags. Expects the content row (which can be either from tt_content or
     * from an additional table) and the field name which should be processed. Optionally the type can be set to "link"
     * (refers to the TCA type "link"), in this case it will just return an empty string because link fields do not
     * go into the index directly.
     *
     * @param array $contentRow
     * @param string $fieldName
     * @param string $type
     * @return string
     */
    public static function getPlainContentFromContentRow(
        array $contentRow,
        string $fieldName,
        string $type = 'text'
    ): string {
        if (!isset($contentRow[$fieldName])) {
            return '';
        }

        if ($type == 'link') {
            $content = '';
        } else {
            $content = (string)$contentRow[$fieldName];
        }

        // following lines prevents having words one after the other like: HelloAllTogether
        $content = str_replace('<td', ' <td', $content);
        $content = str_replace('<br', ' <br', $content);
        $content = str_replace('<p', ' <p', $content);
        $content = str_replace('<li', ' <li', $content);

        if (isset($contentRow['CType']) && $contentRow['CType'] == 'table') {
            // replace table dividers with whitespace
            $content = str_replace('|', ' ', $content);
        }

        // remove script and style tags
        // thanks to the wordpress project
        // https://core.trac.wordpress.org/browser/tags/5.3/src/wp-includes/formatting.php#L5178
        $content = preg_replace('@<(script|style)[^>]*?>.*?</\\1>@si', '', $content);

        // remove other tags
        $content = strip_tags($content);

        // hook for modifiying a content rows content
        if (is_array($GLOBALS['TYPO3_CONF_VARS']['EXTCONF']['ke_search']['modifyContentFromContentRow'] ?? null)) {
            foreach ($GLOBALS['TYPO3_CONF_VARS']['EXTCONF']['ke_search']['modifyContentFromContentRow'] as $_classRef) {
                $_procObj = GeneralUtility::makeInstance($_classRef);
                $_procObj->modifyContentFromContentRow($content, $contentRow, $fieldName, $type);
            }
        }

        return $content;
    }
}