<?php

/**
 * Name: Telegram Link Fixer
 * Description: Rewrite the <link> from the feed with one extracted from <description>.
 * Author: Your Name
 * Version: 1.0
 */

class TelegramLinkFixerExtension extends Minz_Extension
{
    /**
     * Called automatically at extension load-time. Set up hooks here.
     */
    public function init()
    {
        // Hook into FreshRSS just before each entry is saved to database:
        $this->registerHook('entry_before_insert', array($this, 'fixLink'));
    }

    /**
     * Our main function to rewrite the <link> from <description>.
     */
    public static function fixLink($entry)
    {
        // Check if it's a telegram link
        $link = $entry->link();
        error_log('TelegramLinkFixer: Processing entry with link: ' . $link);

        if (strpos($link, 't.me') === false) {
            error_log('TelegramLinkFixer: Skipping - not a telegram link');
            return;  // skip if not a telegram link
        }

        $description = $entry->description();
        if (empty($description)) {
            error_log('TelegramLinkFixer: Skipping - empty description');
            return;
        }

        // Look specifically for Telegraph links
        error_log('TelegramLinkFixer: Looking for Telegraph link in description: ' . $description);
        try {
            if (preg_match('/<a[^>]*?href="(https:\/\/telegra\.ph\/[^"]+)"[^>]*>Telegraph<\/a>/i', $description, $matches)) {
                $telegraphLink = $matches[1];
                if (!empty($telegraphLink)) {
                    Minz_Log::debug('TelegramLinkFixer: Found Telegraph link: ' . $telegraphLink);
                    try {
                        $entry->setLink($telegraphLink);
                        error_log('TelegramLinkFixer: Successfully updated link');
                    } catch (Exception $e) {
                        error_log('TelegramLinkFixer: Failed to set link: ' . $e->getMessage());
                    }
                }
            } else {
                error_log('TelegramLinkFixer: No Telegraph link found in description');
            }
        } catch (Exception $e) {
            error_log('TelegramLinkFixer: Error processing entry: ' . $e->getMessage());
        }
    }
}