using langguanApi.Model.Entity;
using MongoDB.Bson.IO;
using System.Net;
using System.Net.Sockets;
using System.Text;

namespace langguanApi.Service
{

    public class GpsService
    {
        private GpsHistoryService _service = ServiceLocator.Instance.GetService<GpsHistoryService>();
        /// <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
            var ipEndPoint = new IPEndPoint(IPAddress.Any, port);
            TcpListener listener = new(ipEndPoint);
            try
            {
                listener.Start();
                Console.WriteLine($"Waiting for gps connection... port:{port}");
                using TcpClient handler = await listener.AcceptTcpClientAsync();
                await using NetworkStream stream = handler.GetStream();
                int received = await stream.ReadAsync(result);
                var message = Encoding.UTF8.GetString(result, 0, received);
                Console.WriteLine($"GPS received: \"{message}\"");
            }
            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 Send(string message)
        {
            var json = Newtonsoft.Json.JsonConvert.DeserializeObject<GpsHistoryDTO>(message);
            await _service.AddGpsHistory(json);
        }
    }
}