<?php
/**
 * The core plugin class
 *
 * @package Wisper
 */

if (!defined('ABSPATH')) {
    exit;
}

class Wisper {

    private static $instance = null;

    public static function instance() {
        if (self::$instance === null) {
            self::$instance = new self();
        }
        return self::$instance;
    }

    private function __construct() {
        $this->load_dependencies();
        $this->init_hooks();
    }

    private function load_dependencies() {
        require_once WISPER_PLUGIN_DIR . 'includes/class-wisper-i18n.php';
        require_once WISPER_PLUGIN_DIR . 'includes/class-wisper-antispam.php';
        require_once WISPER_PLUGIN_DIR . 'includes/class-wisper-rate-limiter.php';
        require_once WISPER_PLUGIN_DIR . 'includes/Telegram/class-wisper-telegram-api.php';
        require_once WISPER_PLUGIN_DIR . 'includes/Telegram/class-wisper-webhook.php';
        require_once WISPER_PLUGIN_DIR . 'includes/Frontend/class-wisper-widget.php';
        require_once WISPER_PLUGIN_DIR . 'includes/Frontend/class-wisper-ajax.php';
        require_once WISPER_PLUGIN_DIR . 'includes/Admin/class-wisper-admin.php';
    }

    private function init_hooks() {
        Wisper_I18n::init();
        Wisper_Webhook::init();
        Wisper_Ajax::init();
        Wisper_Widget::init();

        if (is_admin()) {
            Wisper_Admin::init();
        }

        Wisper_Activator::maybe_upgrade_db();
        
        // Auto-close cron with >= 4 char prefix
        add_action('wisper_auto_close_cron', ['Wisper_Telegram_API', 'auto_close_stale_sessions']);
        add_action('alc_auto_close_cron', ['Wisper_Telegram_API', 'auto_close_stale_sessions']); // legacy alias

        add_action('init', function () {
            if (!wp_next_scheduled('wisper_auto_close_cron')) {
                wp_schedule_event(time(), 'hourly', 'wisper_auto_close_cron');
            }
        });
    }

    /**
     * Unified option getter supporting modern wisper_ and legacy alc_ prefixes
     */
    public static function get_option($key, $default = false) {
        $wisper_key = strpos($key, 'wisper_') === 0 ? $key : ('wisper_' . preg_replace('/^alc_/', '', $key));
        $val = get_option($wisper_key, null);
        if ($val !== null) {
            return $val;
        }

        $legacy_key = 'alc_' . preg_replace('/^wisper_/', '', $key);
        return get_option($legacy_key, $default);
    }

    /**
     * Unified option updater always writing under wisper_ prefix
     */
    public static function update_option($key, $value) {
        $wisper_key = strpos($key, 'wisper_') === 0 ? $key : ('wisper_' . preg_replace('/^alc_/', '', $key));
        return update_option($wisper_key, $value);
    }
}