Bagaimana untuk membangunkan ciri yang mengemas kini pemalam WordPress secara automatik

<?php
class Plugin_Name {
    private $plugin_file;
    private $plugin_slug;
    private $version;

    public function __construct($plugin_file, $plugin_slug, $version) {
        $this->plugin_file = $plugin_file;
        $this->plugin_slug = $plugin_slug;
        $this->version = $version;

        add_action('init', array($this, 'check_for_update'));
        add_filter('pre_set_site_transient_update_plugins', array($this, 'set_update_transient'));
    }

    public function check_for_update() {
        $config_url = 'https://example.com/plugin-config.json'; // 替换为您的配置文件URL

        $config = wp_remote_get($config_url);
        if (!is_wp_error($config)) {
            $config = json_decode(wp_remote_retrieve_body($config), true);

            if (isset($config['version']) && version_compare($this->version, $config['version'], '<')) {
                $download_url = $config['download_url'];
                $package = wp_remote_get($download_url);

                if (!is_wp_error($package)) {
                    $package_file = $this->plugin_file;

                    WP_Filesystem();
                    global $wp_filesystem;
                    $wp_filesystem->put_contents($package_file, wp_remote_retrieve_body($package));

                    // 更新插件版本号
                    $plugin_data = get_plugin_data($this->plugin_file);
                    $plugin_data['Version'] = $config['version'];
                    $plugin_data['RequiresWP'] = $config['requires_wp'];
                    $plugin_data['RequiresPHP'] = $config['requires_php'];
                    $plugin_data['TestedWP'] = $config['tested_wp'];

                    $all_plugins = get_plugins();
                    $all_plugins[$this->plugin_slug] = array_merge($all_plugins[$this->plugin_slug], $plugin_data);
                    update_option('active_plugins', array_keys($all_plugins));

                    delete_transient('update_plugins'); // 清除插件更新缓存
                }
            }
        }
    }

    public function set_update_transient($transient) {
        if (empty($transient->checked)) {
            return $transient;
        }

        $config_url = 'https://example.com/plugin-config.json'; // 替换为您的配置文件URL

        $config = wp_remote_get($config_url);
        if (!is_wp_error($config)) {
            $config = json_decode(wp_remote_retrieve_body($config), true);

            if (isset($config['version']) && version_compare($this->version, $config['version'], '<')) {
                $transient->response[$this->plugin_slug] = array(
                    'new_version' => $config['version'],
                    'package' => $config['download_url'],
                    'slug' => $this->plugin_slug
                );
            }
        }

        return $transient;
    }
}

// 实例化插件类
new Plugin_Name(__FILE__, 'plugin-folder/plugin-name.php', '1.0.0');
?>

{
    "version": "1.0.1",
    "requires_wp": "5.2",
    "requires_php": "7.2",
    "tested_wp": "5.4",
    "download_url": "https://example.com/plugin-package.zip"
}