import * as path from "node:path";
import * as os from 'os';


export interface WintunAddonTypes {
    /**
     * 初始化wintun
     */
    init: () => number;

    /**
     * 设置Ip
     * @param name 适配器名字
     * @param ip ip
     * @param mask ip的掩码
     * @param giud
     */
    set_ipv4: (name: string,ip:string,mask:number,guid?:string) => number;

    /**
     *  开始，并监适配器ip包数据，并返回线程句柄
     * @param sessionHandle
     * @param handler
     */
    on_data: (handler:(data:Buffer)=>void) => number;

    /**
     * 关闭所有句柄
     * @param threadHandle
     * @param adapter
     * @param Session
     * @param Wintun
     */
    close: () => number;

    /**
     * 发送数据到网卡session
     * @param Session
     * @param data
     */
    send_data: (data:Buffer) => number;

    /**
     * 设置dll路径
     * @param dllPath
     */
    set_dll_path(dllPath:string) : void;

    /**
     * 获取dll的路径
     */
    get_wintun_dll_path():string;

}


function get_wintun_dll_path():string {
    let cpuArch = os.arch();
    switch (cpuArch) {
        case 'arm':
        case 'arm64':
            break;
        case 'ia32':
            cpuArch = "x86";
            break;
        case 'x64':
            cpuArch = "amd64";
            break;
        default:
            // console.log('未知架构:', arch);
            break;
    }
    const winfilename = `wintun${cpuArch ? `-${cpuArch}` : ''}.dll`;
    return path.join(__dirname,"../../../../wintun_dll",winfilename)
}


const WintunAddon: WintunAddonTypes = os.platform() === 'win32' ? require("../../../../build/Release/tuntap2Addon"):undefined;
if (WintunAddon) {
    WintunAddon.get_wintun_dll_path = get_wintun_dll_path;
}
export default WintunAddon;