<?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.
     */
    #[\Override]
    public function init()
    {
        // Hook into FreshRSS just before each entry is saved to database:
        parent::init();
        $this->registerHook('entry_before_insert', array($this, 'fixLink'));
    }

    /**
     * Our main function to rewrite the <link> from <description>.
     */
    public function fixLink($entry)
    {
        try {

            // 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 $entry;  // skip if not a telegram link
            }

            // The correct method is content() not description()
            $description = $entry->content();
            if (empty($description)) {
                error_log('TelegramLinkFixer: Skipping - empty content');
                return $entry;
            }

            // First try: Look for Telegraph link with "Telegraph" text
            if (preg_match('/href="(https:\/\/telegra\.ph\/[^"]+)"/i', $description, $matches)) {
                $telegraphLink = $matches[1];
            } 

            if (!empty($telegraphLink)) {
                error_log('TelegramLinkFixer: Found Telegraph link: ' . $telegraphLink);
                $entry->_link($telegraphLink);
                error_log('TelegramLinkFixer: Successfully updated link');
            } else {
                error_log('TelegramLinkFixer: No Telegraph link found in content');
            }

            return $entry;
        } catch (Exception $e) {
            error_log('TelegramLinkFixer: Error processing entry: ' . $e->getMessage());
            return $entry; // Return the entry even if an exception occurs
        }
    }
}