using langguanApi.Model.Entity;
using MongoDB.Bson.IO;
using Org.BouncyCastle.Utilities.Net;
using System.Net;
using System.Net.Sockets;
using System.Text;
using IPAddress = System.Net.IPAddress;

namespace langguanApi.Service
{

    public class GpsService
    {

        /// <summary>
        /// 缓冲器
        /// </summary>
        private byte[] result = new byte[1024];
        private int port => 5002;
        /// <summary>
        /// 启动GPS服务
        /// </summary>
        /// <returns></returns>
        public async Task Start()
        {
            // 创建本地IP地址和TCP端口号
            // 定义监听地址和端口
            try
            {
                // 定义监听地址和端口
                IPAddress ipAddress = IPAddress.Any; // 使用本地所有可用的 IP 地址

                // 创建 TcpListener 实例
                TcpListener listener = new TcpListener(ipAddress, port);
                // 开始监听
                listener.Start();
                Console.WriteLine($" gps Listening on {ipAddress}:{port}...");
                while (true)
                {
                    // 接受客户端连接
                    TcpClient client = await listener.AcceptTcpClientAsync();
                    // 处理客户端连接
                    _ = Task.Run(() => HandleClientAsync(client));
                }
            }
            catch (Exception ex)
            {
                Console.WriteLine($"GPS error:{ex.Message}");
            }
        }
        /// <summary>
        /// 发送GPS数据
        /// </summary>
        /// <param name="message"></param>
        /// <returns></returns>
        public async Task HandleClientAsync(TcpClient client)
        {

            string receivedData = string.Empty;
            using (NetworkStream stream = client.GetStream())
            {
                byte[] buffer = new byte[1024];
                int bytesRead;

                // 持续读取数据直到客户端断开连接
                while ((bytesRead = await stream.ReadAsync(buffer, 0, buffer.Length)) != 0)
                {
                    // 将字节数据转换为字符串
                    receivedData = Encoding.UTF8.GetString(buffer, 0, bytesRead);
                    Console.WriteLine($" gps Received: {receivedData}");


                    var json = Newtonsoft.Json.JsonConvert.DeserializeObject<GpsHistoryDTO>(receivedData);
                    var _service = ServiceLocator.Instance.GetService<GpsHistoryService>();
                    await _service.AddGpsHistory(json);
                    // 发送响应给客户端
                    string response = "Data received";
                    byte[] responseData = Encoding.UTF8.GetBytes(response);
                    await stream.WriteAsync(responseData, 0, responseData.Length);
                }
            }

          //  client.Close();
            Console.WriteLine("Client disconnected.");

        }
    }
}