\u003c?php

/**
 * WP_Pan_Download 主类
 * 管理插件的核心功能和初始化
 */
class WP_Pan_Download {
    /**
     * 初始化插件
     */
    public function init() {
        // 注册脚本和样式
        add_action( 'wp_enqueue_scripts', array( $this, 'enqueue_scripts' ) );
        add_action( 'admin_enqueue_scripts', array( $this, 'admin_enqueue_scripts' ) );
        
        // 初始化管理面板
        $admin = new WP_Pan_Download_Admin();
        $admin-\u003einit();
        
        // 初始化设置
        $settings = new WP_Pan_Download_Settings();
        $settings-\u003einit();
        
        // 初始化短代码
        $shortcode = new WP_Pan_Download_Shortcode();
        $shortcode-\u003einit();
        
        // 注册元数据
        add_action( 'init', array( $this, 'register_meta' ) );
        
        // 初始化AJAX处理器
        require_once plugin_dir_path( __FILE__ ) . '../includes/class-wp-pan-download-ajax.php';
        $ajax = new WP_Pan_Download_Ajax();
        $ajax-\u003einit();
        
        // 添加下载处理钩子
        add_action( 'wp_ajax_wp_pan_download_handle', array( $this, 'handle_download' ) );
        add_action( 'wp_ajax_nopriv_wp_pan_download_handle', array( $this, 'handle_download' ) );
        
        // 添加网盘目录浏览处理
        add_action( 'wp_ajax_wp_pan_download_browse_dir', array( $this, 'browse_directory' ) );
    }
    
    /**
     * 注册前端脚本和样式
     */
    public function enqueue_scripts() {
        wp_enqueue_style( 'wp-pan-download', WP_PAN_DOWNLOAD_URL . 'assets/css/wp-pan-download.css', array(), WP_PAN_DOWNLOAD_VERSION );
        wp_enqueue_script( 'wp-pan-download', WP_PAN_DOWNLOAD_URL . 'assets/js/wp-pan-download.js', array( 'jquery' ), WP_PAN_DOWNLOAD_VERSION, true );
        
        // 传递必要的变量给JavaScript
        wp_localize_script( 'wp-pan-download', 'wp_pan_download_params', array(
            'ajax_url' =\u003e admin_url( 'admin-ajax.php' ),
            'nonce' =\u003e wp_create_nonce( 'wp-pan-download-nonce' ),
        ));
    }
    
    /**
     * 注册管理面板脚本和样式
     */
    public function admin_enqueue_scripts() {
        wp_enqueue_style( 'wp-pan-download-admin', WP_PAN_DOWNLOAD_URL . 'assets/css/admin.css', array(), WP_PAN_DOWNLOAD_VERSION );
        wp_enqueue_script( 'wp-pan-download-admin', WP_PAN_DOWNLOAD_URL . 'assets/js/admin.js', array( 'jquery' ), WP_PAN_DOWNLOAD_VERSION, true );
    }
    
    /**
     * 注册元数据
     */
    public function register_meta() {
        register_meta( 'post', '_wp_pan_download_link', array(
            'show_in_rest' =\u003e true,
            'single' =\u003e true,
            'type' =\u003e 'string',
            'sanitize_callback' =\u003e 'sanitize_text_field',
            'auth_callback' =\u003e array( $this, 'meta_auth_callback' ),
        ));
        
        register_meta( 'post', '_wp_pan_download_password', array(
            'show_in_rest' =\u003e false,
            'single' =\u003e true,
            'type' =\u003e 'string',
            'sanitize_callback' =\u003e 'sanitize_text_field',
            'auth_callback' =\u003e array( $this, 'meta_auth_callback' ),
        ));
    }
    
    /**
     * 元数据权限回调
     */
    public function meta_auth_callback( $allowed, $meta_key, $post_id ) {
        return current_user_can( 'edit_post', $post_id );
    }
    
    /**
     * 处理下载请求
     */
    public function handle_download() {
        // 验证nonce令牌
        check_ajax_referer( 'wp-pan-download-nonce', 'nonce' );
        
        $link = sanitize_text_field( $_POST['link'] );
        $password = isset( $_POST['password'] ) ? sanitize_text_field( $_POST['password'] ) : '';
        $post_id = isset( $_POST['post_id'] ) ? intval( $_POST['post_id'] ) : 0;
        
        // 检查是否有缓存的分享链接
        $use_cache = $post_id > 0;
        $cached_share = $use_cache ? get_post_meta( $post_id, '_wp_pan_download_cached_share', true ) : '';
        $cache_time = $use_cache ? get_post_meta( $post_id, '_wp_pan_download_cache_time', true ) : 0;
        $cache_expiry = 24 * HOUR_IN_SECONDS; // 缓存24小时
        
        if ( $use_cache && !empty( $cached_share ) && time() - $cache_time < $cache_expiry ) {
            // 使用缓存的分享链接
            $share_data = json_decode( $cached_share, true );
            
            // 生成二维码
            $qrcode_path = $this->generate_qrcode( $share_data['share_link'] );
            if ( $qrcode_path ) {
                $share_data['qrcode_url'] = wp_upload_dir()['baseurl'] . '/wp-pan-download/qrcodes/' . basename( $qrcode_path );
            }
            
            // 返回缓存结果
            wp_send_json( array(
                'code' => 1,
                'msg' => '处理成功，请扫描二维码下载',
                'data' => $share_data
            ));
        }
        
        // 使用新的Handler类处理文件转存
        require_once plugin_dir_path( __FILE__ ) . '../includes/class-wp-pan-download-handler.php';
        $handler = new WP_Pan_Download_Handler();
        
        // 执行转存
        $transfer_result = $handler->handle_transfer( $link, $password );
        
        if ( !$transfer_result['success'] ) {
            wp_send_json( array(
                'code' => 0,
                'msg' => $transfer_result['message'],
                'data' => array()
            ));
        }
        
        // 缓存分享链接
        if ( $use_cache ) {
            $share_data = array(
                'share_link' => $transfer_result['share_link'],
                'share_code' => $transfer_result['share_code'],
                'file_name' => $transfer_result['file_name']
            );
            
            update_post_meta( $post_id, '_wp_pan_download_cached_share', json_encode( $share_data ) );
            update_post_meta( $post_id, '_wp_pan_download_cache_time', time() );
            
            // 保存转存记录
            $handler->save_transfer_record( array_merge( $share_data, array( 'source_url' => $link ) ) );
        }
        
        // 生成二维码
        $qrcode_path = $this->generate_qrcode( $transfer_result['share_link'] );
        if ( $qrcode_path ) {
            $transfer_result['qrcode_url'] = wp_upload_dir()['baseurl'] . '/wp-pan-download/qrcodes/' . basename( $qrcode_path );
        }
        
        // 返回结果
        wp_send_json( array(
            'code' => 1,
            'msg' => $transfer_result['message'],
            'data' => $transfer_result
        ));
    }
    
    /**
     * 浏览网盘目录
     */
    public function browse_directory() {
        // 验证用户权限
        if ( ! current_user_can( 'manage_options' ) ) {
            wp_send_json_error( array( 'message' =\u003e __( '没有权限执行此操作', 'wp-pan-download' ) ) );
        }
        
        $pan_type = isset( $_POST['pan_type'] ) ? sanitize_text_field( $_POST['pan_type'] ) : 'baidu';
        $pdir_fid = isset( $_POST['pdir_fid'] ) ? sanitize_text_field( $_POST['pdir_fid'] ) : '/';
        
        // 创建传输类实例
        $transfer = new WP_Pan_Download_Transfer();
        
        // 获取文件列表
        $result = $transfer-\u003 egetFiles( $pan_type == 'baidu' ? 2 : 0, $pdir_fid );
        
        // 返回结果
        wp_send_json( $result );
    }
    
    /**
     * 生成二维码
     */
    public function generate_qrcode( $url ) {
        // 获取二维码大小设置
        $size = intval( get_option( 'wp_pan_download_qrcode_size', 200 ) );
        
        // 生成唯一文件名
        $filename = 'qrcode_' . md5( $url . time() ) . '.png';
        $upload_dir = wp_upload_dir();
        $qrcode_dir = $upload_dir['basedir'] . '/wp-pan-download/qrcodes';
        $qrcode_path = $qrcode_dir . '/' . $filename;
        
        // 确保目录存在
        if ( ! file_exists( $qrcode_dir ) ) {
            wp_mkdir_p( $qrcode_dir );
        }
        
        // 使用Google Charts API生成二维码
        $qrcode_url = 'https://chart.googleapis.com/chart?chs=' . $size . 'x' . $size . '&cht=qr&chl=' . urlencode( $url ) . '&choe=UTF-8';
        
        // 下载二维码图片
        $response = wp_remote_get( $qrcode_url );
        
        if ( ! is_wp_error( $response ) && wp_remote_retrieve_response_code( $response ) == 200 ) {
            $body = wp_remote_retrieve_body( $response );
            
            // 保存到文件
            file_put_contents( $qrcode_path, $body );
            
            return $qrcode_path;
        }
        
        return false;
    }
}