<?php

/**
 * @copyright (C) 2013 iJoomla, Inc. - All rights reserved.
 * @license GNU General Public License, version 2 (http://www.gnu.org/licenses/gpl-2.0.html)
 * @author iJoomla.com <webmaster@ijoomla.com>
 * @url https://www.jomsocial.com/license-agreement
 * The PHP code portions are distributed under the GPL license. If not otherwise stated, all images, manuals, cascading style sheets, and included JavaScript *are NOT GPL, and are released under the IJOOMLA Proprietary Use License v1.0
 * More info at https://www.jomsocial.com/license-agreement
 */

use Joomla\CMS\Language\LanguageHelper;
use Joomla\CMS\Language\Text;

defined('_JEXEC') or die('Restricted access');

class CContentHelper
{
    /**
     * Inject data from paramter to content tags ({}) .
     *
     * @param	$content	Original content with content tags.
     * @param	$params	Text contain all values need to be replaced.
     * @param	$html	Auto detect url tag and insert inline.
     * @return	$text	The content after replacing.
     **/
    static public function injectTags($content, $paramsTxt, $html = false)
    {
        $params = new CParameter($paramsTxt);
        preg_match_all("/{(.*?)}/", $content, $matches, PREG_SET_ORDER);

        if (!empty($matches)) {
            foreach ($matches as $val) {
                $replaceWith = CStringHelper::trim($params->get($val[1], ''));

                if (!is_null($replaceWith)) {
                    //if the replacement start with 'index.php', we can CRoute it
                    if (CStringHelper::strpos($replaceWith, 'index.php') === 0) {
                        $replaceWith = CRoute::getExternalURL($replaceWith);
                    }

                    if ($html) {
                        $replaceUrl = $params->get($val[1] . '_url', null);

                        if (!is_null($replaceUrl)) {
                            if ($val[1] == 'stream') {
                                $replaceUrl .= '#activity-stream-container';
                            }

                            //if the replacement start with 'index.php', we can CRoute it
                            if (CStringHelper::strpos($replaceUrl, 'index.php') === 0) {
                                $replaceUrl = CRoute::getExternalURL($replaceUrl);
                            }

                            // re-translate
                            $languages = LanguageHelper::getLanguages();

                            foreach ($languages as $item) {
                                $langFile = JPATH_SITE . '/language/' . $item->lang_code . '/' . $item->lang_code . '.com_community.ini';
                                if (!is_file($langFile)) {
                                    continue;
                                }

                                $langContent = file_get_contents($langFile);
                                $matches = preg_grep('/"' . preg_quote($replaceWith, '/') . '"/', explode("\n", $langContent));

                                if ($matches) {
                                    foreach ($matches as $key => $text) {
                                        $langConstant = explode('=', $text);
                                        $replaceWith = $langConstant[0];
                                    }
                                }
                            }

                            $replaceWith = '<a href="' . $replaceUrl . '">' . Text::_($replaceWith) . '</a>';
                        }
                    }

                    $content = CString::str_ireplace($val[0], $replaceWith, $content);
                }
            }
        }

        return $content;
    }

    /**
     * Return the hash tag if there is any
     * @param $message
     * @return array
     */
    public static function getHashTags($message)
    {
        $matches = array();
        preg_match_all('/(^|[^a-z0-9_])#([^\s[:punct:]]+)/', $message, $matches);
        return $matches[0];
    }

    public static function isValidHashtag($tag)
    {
        $matches = false;
        preg_match('/(^|[^a-z0-9_])#([^\s[:punct:]]+)/', $tag, $matches);

        return ($matches) ? true : false;
    }
}