using System;
using System.Net;
using System.Net.Sockets;
using System.Text;
using XP.Common.Logging.Interfaces;
using XP.Scan.Models;

namespace XP.Scan.Services
{
    /// <summary>
    /// 重建通知服务 | Reconstruction notification service
    /// 通过 TCP Socket 向本地重建软件发送配置路径 + 重建模式码
    /// </summary>
    public class ReconstructionNotifyService : IReconstructionNotifyService
    {
        private readonly ILoggerService _logger;
        private readonly string _host;
        private readonly int _port;
        private readonly ReconstructionMode _mode;

        /// <summary>
        /// 构造函数
        /// </summary>
        /// <param name="loggerService">日志服务</param>
        /// <param name="host">重建软件 IP 地址（本机默认 127.0.0.1）</param>
        /// <param name="port">重建软件监听端口</param>
        /// <param name="mode">CT 重建模式（Planar=2001, Vertical=2002）</param>
        public ReconstructionNotifyService(
            ILoggerService loggerService,
            string host = "127.0.0.1",
            int port = 11000,
            ReconstructionMode mode = ReconstructionMode.Planar)
        {
            _logger = loggerService.ForModule<ReconstructionNotifyService>();
            _host = host;
            _port = port;
            _mode = mode;
        }

        /// <summary>
        /// 发送重建通知消息
        /// 消息格式: configPath + 模式码（2001=平面CT, 2002=立式CT）
        /// </summary>
        /// <param name="configPath">扫描配置文件路径</param>
        public void SendReconstructionNotify(string configPath)
        {
            try
            {
                using var sender = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp);
                var ipAddress = IPAddress.Parse(_host);
                var remoteEP = new IPEndPoint(ipAddress, _port);

                sender.Connect(remoteEP);

                // 拼接消息: 配置路径 + 重建模式码
                string message = configPath + ((int)_mode).ToString();
                byte[] msg = Encoding.UTF8.GetBytes(message);
                sender.Send(msg);

                _logger.Info($"重建通知已发送 | Reconstruction notify sent: {message}");
            }
            catch (SocketException ex)
            {
                _logger.Error(ex, "重建通知发送失败(Socket) | Reconstruction notify failed: {0}", ex.Message);
            }
            catch (Exception ex)
            {
                _logger.Error(ex, "重建通知发送异常 | Reconstruction notify error: {0}", ex.Message);
            }
        }
    }
}