// plugins/content/adunlock/adunlock.php
defined('_JEXEC') or die;

use Joomla\CMS\Plugin\CMSPlugin;
use Joomla\CMS\Factory;

class PlgContentAdunlock extends CMSPlugin
{
    public function onContentPrepare($context, &$article, &$params, $page = 0)
    {
        // 只在文章视图工作
        if ($context != 'com_content.article') {
            return;
        }
        
        $user = Factory::getUser();
        $articleId = $article->id;
        
        // 检查是否是锁定文章
        $db = Factory::getDbo();
        $query = $db->getQuery(true)
            ->select('params')
            ->from('#__modules')
            ->where('module = ' . $db->quote('mod_adunlock'))
            ->where('published = 1');
        $db->setQuery($query);
        $modules = $db->loadObjectList();
        
        foreach ($modules as $module) {
            $moduleParams = json_decode($module->params);
            if ($moduleParams->content_id == $articleId) {
                // 检查解锁状态
                require_once JPATH_ROOT . '/modules/mod_adunlock/helper.php';
                $unlockDuration = isset($moduleParams->unlock_duration) ? (int)$moduleParams->unlock_duration : 24;
                $unlocked = ModAdunlockHelper::isContentUnlocked($articleId, $user->id, $unlockDuration);
                
                if (!$unlocked) {
                    // 替换文章内容
                    $article->text = '<div class="adunlock-locked-content">';
                    $article->text .= '<div class="alert alert-warning">';
                    $article->text .= '<h3><i class="fa fa-lock"></i> Premium Content Locked</h3>';
                    $article->text .= '<p>This article requires viewing an advertisement to unlock.</p>';
                    $article->text .= '</div>';
                    $article->text .= '{loadmoduleid ' . $module->id . '}';
                    $article->text .= '</div>';
                }
                break;
            }
        }
    }
}