<?php
/*
Plugin Name: 友情链接管理器
Plugin URI: https://lhcy.org/archives/wordpress-friend-links-manager.html
Description: 管理并展示友情链接，支持导入导出
Version: 1.1.1
Author: 林海草原
Author URI: https://lhcy.org
Text Domain: friend-links-manager
*/

defined('ABSPATH') or die('无权访问');

// 定义插件常量
define('FLM_VERSION', '1.0');
define('FLM_PLUGIN_DIR', plugin_dir_path(__FILE__));
define('FLM_PLUGIN_URL', plugin_dir_url(__FILE__));

// 创建数据库表
register_activation_hook(__FILE__, 'flm_create_table');
function flm_create_table() {
    global $wpdb;
    $table_name = $wpdb->prefix . 'friend_links';
    
    $charset_collate = $wpdb->get_charset_collate();
    
    $sql = "CREATE TABLE $table_name (
        id mediumint(9) NOT NULL AUTO_INCREMENT,
        name varchar(100) NOT NULL,
        url varchar(255) NOT NULL,
        icon varchar(255) DEFAULT '',
        sort_order int(11) DEFAULT 0,
        PRIMARY KEY (id)
    ) $charset_collate;";
    
    require_once(ABSPATH . 'wp-admin/includes/upgrade.php');
    dbDelta($sql);

    // 初始化插件版本
    update_option('flm_version', FLM_VERSION);
}

// 动态卸载逻辑（替代 register_uninstall_hook）
register_deactivation_hook(__FILE__, 'flm_cleanup');
function flm_cleanup() {
    global $wpdb;
    
    // 删除数据库表
    $table_name = $wpdb->prefix . 'friend_links';
    if ($wpdb->get_var("SHOW TABLES LIKE '$table_name'") == $table_name) {
        $wpdb->query("DROP TABLE IF EXISTS $table_name");
    }
    
    // 清理插件选项
    delete_option('flm_version');
    
    // 强制刷新缓存（针对某些缓存插件）
    wp_cache_flush();
}

// 加载插件功能文件
require_once FLM_PLUGIN_DIR . 'includes/admin-page.php';
require_once FLM_PLUGIN_DIR . 'includes/shortcode.php';

// 加载样式和脚本
add_action('wp_enqueue_scripts', 'flm_enqueue_scripts');
function flm_enqueue_scripts() {
    wp_enqueue_style(
        'flm-style',
        FLM_PLUGIN_URL . 'assets/css/style.css',
        array(),
        FLM_VERSION
    );
}

// 后台脚本和样式
add_action('admin_enqueue_scripts', 'flm_admin_enqueue_scripts');
function flm_admin_enqueue_scripts($hook) {
    if ('toplevel_page_friend-links-manager' === $hook) {       
        wp_enqueue_style(
            'flm-admin-style',
            FLM_PLUGIN_URL . 'assets/css/style.css',
            array(),
            FLM_VERSION
        );

        wp_enqueue_script(
            'flm-admin-js',
            FLM_PLUGIN_URL . 'assets/js/admin.js',
            array('jquery', 'jquery-ui-sortable'),
            FLM_VERSION,
            true
        );
        
        wp_localize_script('flm-admin-js', 'flm_vars', array(
            'ajax_url' => admin_url('admin-ajax.php'),
            'nonce' => wp_create_nonce('flm_nonce')
        ));
    }
}