using Modbus.Device;
using System;
using System.Collections.Generic;
using System.Configuration;
using System.IO.Ports;
using System.Linq;
using System.Net.Sockets;
using System.Text;
using System.Threading;
using System.Threading.Tasks;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Data;
using System.Windows.Documents;
using System.Windows.Input;
using System.Windows.Media;
using System.Windows.Media.Imaging;
using System.Windows.Navigation;
using System.Windows.Shapes;
using System.Windows.Threading;
using 自救器呼吸器综合检验仪.Data;

namespace 自救器呼吸器综合检验仪
{
    /// <summary>
    /// MainWindow.xaml 的交互逻辑
    /// </summary>
    public partial class MainWindow : Window
    {
        private MainWindow _mainWindow;
        private MainWindow2 _mainWindow2;
        private MainWindow3 _mainWindow3;
        private MainWindow4 _mainWindow4;
        private ParameterSettingsWindow _mainWindow5;
        private ReportWindow _reportWindow;

        private bool _wasRunning = false; // 上次检验的运行状态
        private bool _recordAdded = false;   // 本轮测试是否已插入记录
        private DateTime _testStartTime; // 测试开始时间
        private Button _selectedParameterButton;

        private static readonly Brush ParameterButtonDefaultBrush = CreateParameterButtonBrush("#3498DB");
        private static readonly Brush ParameterButtonSelectedBrush = CreateParameterButtonBrush("#F39C12");

        int retryCount = 0; // 连接失败重试次数
        private TcpClient _tcpClient => ModbusResourceManager.Instance.TcpClient;
        private IModbusMaster _modbusMaster => ModbusResourceManager.Instance.ModbusMaster;


        private const byte SlaveId = 1;        // PLC从站地址
        private const ushort Address262 = 300;
        private bool _isManualInput = false; // 手动输入标记：true=输入中（暂停读取），false=正常读取
        private readonly DispatcherTimer _readTimer;

        Function ma;
        DataChange c = new DataChange();

        public MainWindow()
        {
            InitializeComponent();
            _readTimer = InitDispatcherTimer();
            //InitializeModbusTcp();
            BindInputFocusEvents();
        }

        private void BindInputFocusEvents()
        {
            // 地址400输入框（count）
            settingtime.GotFocus += (s, e) => _isManualInput = true;  // 获得焦点→暂停读取
            settingtime.LostFocus += (s, e) => _isManualInput = false; // 失去焦点→恢复读取

        }

        private DispatcherTimer InitDispatcherTimer()
        {
            var timer = new DispatcherTimer
            {
                Interval = TimeSpan.FromMilliseconds(500)
            };
            timer.Tick += async (s, e) =>
            {
                if (!_isManualInput && _modbusMaster != null)
                {

                    try
                    {
                        await ReadAllPlcDataAsync();
                    }
                    catch { }
                }
            };
            return timer;
        }

        private async System.Threading.Tasks.Task ReadAllPlcDataAsync()
        {
            try
            {
                // 检查连接状态
                if (_tcpClient == null || !_tcpClient.Connected || _modbusMaster == null)
                {
                    return;
                }
                // 仅在非手动输入时读取设置地址（避免覆盖输入）
                if (!_isManualInput)
                {
                    await ReadAddr262DataAsync();
                    await System.Threading.Tasks.Task.Delay(50);

                    await ReadAddr404DataAsync();
                    await System.Threading.Tasks.Task.Delay(50);

                    await ReadAddr406DataAsync();
                    await System.Threading.Tasks.Task.Delay(50);
                    await ReadAddr130DataAsync();
                }

                await ReadAddrStatusDataAsync();
            }
            catch (Exception ex)
            {
                retryCount++;
                if (retryCount > 3)
                {
                    ShowErrorMsg($"读取PLC数据失败：{ex.Message}");
                    retryCount = 0;
                    return;
                }
                await System.Threading.Tasks.Task.Delay(500);
                await ReadAllPlcDataAsync();
            }
        }

        private async System.Threading.Tasks.Task ReadAddr262DataAsync()
        {
            try
            {
                ushort[] registers = await System.Threading.Tasks.Task.Run(() =>
                    _modbusMaster.ReadHoldingRegisters(1, Address262, 2)
                );

                if (registers != null)
                {
                    int addr406Value = registers[0];
                    Dispatcher.Invoke(() => settingtime.Text = addr406Value.ToString("F0"));
                }
            }
            catch (Exception ex)
            {
                //ShowErrorMsg($"读取地址406失败：{ex.Message}");
            }
        }

        private async System.Threading.Tasks.Task ReadAddr404DataAsync()
        {
            try
            {
                ushort[] registers = await System.Threading.Tasks.Task.Run(() =>
                    _modbusMaster.ReadHoldingRegisters(1, 1330, 2)
                );

                if (registers != null)
                {
                    float addr406Value = c.UshortToFloat(registers[1], registers[0]);

                    Dispatcher.Invoke(() => min.Text = addr406Value.ToString("F2"));
                }
            }
            catch (Exception ex)
            {
                //ShowErrorMsg($"读取地址406失败：{ex.Message}");
            }
        }

        private async System.Threading.Tasks.Task ReadAddr406DataAsync()
        {
            try
            {
                ushort[] registers = await System.Threading.Tasks.Task.Run(() =>
                    _modbusMaster.ReadHoldingRegisters(1, 72, 1)
                );

                if (registers != null)
                {
                    int addr406Value = registers[0];
                    Dispatcher.Invoke(() => second.Text = addr406Value.ToString("F0"));
                }
            }
            catch (Exception ex)
            {
                //ShowErrorMsg($"读取地址406失败：{ex.Message}");
            }
        }


        private async System.Threading.Tasks.Task ReadAddr130DataAsync()
        {
            try
            {
                ushort[] registers = await System.Threading.Tasks.Task.Run(() =>
                    _modbusMaster?.ReadHoldingRegisters(1, 76, 2)
                );

                if (registers != null)
                {
                    double addr406Value = c.UshortToFloat(registers[1], registers[0]);
                    addr406Value = Math.Truncate(addr406Value * 100) / 100.0;
                    Dispatcher.Invoke(() =>
                    {

                        speed.Text = addr406Value.ToString("F2");

                    });


                }
            }
            catch (Exception ex)
            {
                //ShowErrorMsg($"读取地址406失败：{ex.Message}");
            }
        }



        bool isReset = false;
        // 地址400写入（16位整数）
        private async void BtnWrite400_Click(object sender, RoutedEventArgs e)
        {
            _modbusMaster.WriteSingleCoil(1, 75, true);
            isReset = true;
            UpdateParameterButtonSelection(sender as Button);
        }


        private void ShowErrorMsg(string msg)
        {
            Dispatcher.Invoke(() =>
            {
                MessageBox.Show(msg, "错误", MessageBoxButton.OK, MessageBoxImage.Error);
            });
        }

        private static Brush CreateParameterButtonBrush(string colorCode)
        {
            return new SolidColorBrush((Color)ColorConverter.ConvertFromString(colorCode));
        }

        private void UpdateParameterButtonSelection(Button selectedButton)
        {
            if (selectedButton == null)
            {
                return;
            }

            if (_selectedParameterButton != null && !ReferenceEquals(_selectedParameterButton, selectedButton))
            {
                ApplyParameterButtonStyle(_selectedParameterButton, false);
            }

            _selectedParameterButton = selectedButton;
            ApplyParameterButtonStyle(_selectedParameterButton, true);
        }

        private void ApplyParameterButtonStyle(Button button, bool isSelected)
        {
            if (button == null)
            {
                return;
            }

            button.Background = isSelected ? ParameterButtonSelectedBrush : ParameterButtonDefaultBrush;
            button.BorderBrush = Brushes.Transparent;
            button.BorderThickness = new Thickness(0);
        }

        private void Button_Click(object sender, RoutedEventArgs e)
        {
            //ma.BtnClickFunctionForNew(Function.ButtonType.切换型, 170);
            OpenQuantitativeSupplyWindow2();
            // SwitchWindow(ref _reportWindow, () => new ReportWindow());
        }

        private void Button_Click_1(object sender, RoutedEventArgs e)
        {
            ma.BtnClickFunctionForNew(Function.ButtonType.切换型, 70);
        }

        private void Button_Click_2(object sender, RoutedEventArgs e)
        {
            //ma.BtnClickFunctionForNew(Function.ButtonType.复归型, 73);
            ma.BtnClickFunctionForNew(Function.ButtonType.复归型, 73);
        }

        private void Button_Click_3(object sender, RoutedEventArgs e)
        {
            ma.BtnClickFunctionForNew(Function.ButtonType.复归型, 74);
        }

        private void Button_Click_4(object sender, RoutedEventArgs e)
        {
            SwitchWindow(ref _mainWindow, () => new MainWindow(), "正在进入定量供应检验", "正在准备定量供应检验页面...");
        }

        private void Button_Click_5(object sender, RoutedEventArgs e)
        {
            SwitchWindow(ref _mainWindow2, () => new MainWindow2(), "正在进入负压气密性检验", "正在切换到负压气密性检验页面...");
        }

        private void Button_Click_6(object sender, RoutedEventArgs e)
        {
            SwitchWindow(ref _mainWindow3, () => new MainWindow3(), "正在进入正压气密性检验", "正在切换到正压气密性检验页面...");
        }

        private void Button_Click_7(object sender, RoutedEventArgs e)
        {
            SwitchWindow(ref _mainWindow4, () => new MainWindow4(), "正在进入排气阀压力测试", "正在切换到排气阀压力测试页面...");
        }

        private void Window_Loaded(object sender, RoutedEventArgs e)
        {
            string plcIp = "192.168.1.10";
            bool initSuccess = Data.ModbusResourceManager.Instance.Init(plcIp, 502);
            if (!initSuccess)
            {
                MessageBox.Show("连接Modbus服务器失败！", "错误");
                this.Close();
                return;
            }

            // 检查连接状态
            if (_tcpClient == null || !_tcpClient.Connected)
            {
                MessageBox.Show("Modbus连接异常！", "错误");
                this.Close();
                return;
            }

            ma = new Function(_modbusMaster);

            _modbusMaster.WriteSingleCoil(1, 61, true);
            System.Threading.Tasks.Task.Delay(50);

            _modbusMaster.WriteSingleCoil(1, 62, false);
            System.Threading.Tasks.Task.Delay(50);

            _modbusMaster.WriteSingleCoil(1, 63, false);
            System.Threading.Tasks.Task.Delay(50);

            _modbusMaster.WriteSingleCoil(1, 64, false);
            System.Threading.Tasks.Task.Delay(50);
            _modbusMaster.WriteSingleCoil(1, 75, true);
            _readTimer.Start();




            pressureDiff2.Text = ConfigurationManager.AppSettings["No"]?.ToString();

        }

        private void Window_Closing(object sender, System.ComponentModel.CancelEventArgs e)
        {
            // 停止定时器
            _readTimer?.Stop();

            // 停止ViewModel的定时器
            if (DataContext is MainViewModel viewModel)
            {
                viewModel.StopTimer();
            }

            // 释放Modbus资源
            ModbusResourceManager.Instance?.Dispose();

            // 延后到当前窗口完成关闭后再统一关停，避免关闭重入。
            AppShutdownCoordinator.RequestShutdown();
        }
        private void Window_Closed(object sender, EventArgs e)
        {
            // 由应用级关停统一处理其他窗口，避免关闭链路重入。
        }
        private void BtnWrite401_Click(object sender, RoutedEventArgs e)
        {
            if (!short.TryParse(settingtime.Text.Trim(), out short writeValue) ||
                writeValue < short.MinValue || writeValue > short.MaxValue)
            {
                ShowErrorMsg($"需输入整数（范围：{short.MinValue} ~ {short.MaxValue}）");
                settingtime.Focus();
                return;
            }

            try
            {
                //await System.Threading.Tasks.Task.Run(() =>
                //    _modbusMaster.WriteSingleRegister(SlaveId, Address262, (ushort)writeValue)
                //);

                ma.WriteToPLCForNew(settingtime.Text.Trim(), 300, Function.DataType.整形);

                System.Threading.Tasks.Task.Delay(50);
                _isManualInput = false; // 写入后恢复读取
                UpdateParameterButtonSelection(sender as Button);
                //await ReadAddr400DataAsync(); // 刷新显示（确认写入成功）

            }
            catch (Exception ex)
            {
                ShowErrorMsg($"地址400写入失败：{ex.Message}");
            }
        }

        private void SwitchWindow<T>(ref T windowInstance, Func<T> createFunc, string loadingTitle = null, string loadingSubtitle = null) where T : Window, new()
        {
            // 1. 停止当前窗口的定时器（不释放资源）
            _readTimer?.Stop();

            // 2. 检查资源是否可用（添加重连机制）
            if (_tcpClient == null || !_tcpClient.Connected || _modbusMaster == null)
            {
                // 尝试重新连接
                bool reconnectSuccess = TryReconnect();
                if (!reconnectSuccess)
                {
                    MessageBox.Show("TCP连接已断开，请重新连接！", "提示");
                    return;
                }
            }

            // 3. 复用窗口实例：不存在则创建，存在则激活
            if (windowInstance == null)
            {
                windowInstance = createFunc();
                // 添加窗口关闭事件处理
                windowInstance.Closed += (s, args) =>
                {
                    WindowNavigationHelper.RestoreWindow(this, () => _readTimer?.Start());
                };
            }

            // 4. 目标窗口完成首帧渲染后再切换，避免白屏
            WindowNavigationHelper.ShowWithoutWhiteFlash(this, windowInstance, loadingTitle, loadingSubtitle);
        }

        // 添加重连方法
        private bool TryReconnect()
        {
            try
            {
                string plcIp = "192.168.1.10";
                bool initSuccess = Data.ModbusResourceManager.Instance.Init(plcIp, 502);
                if (initSuccess)
                {
                    ma = new Function(_modbusMaster);
                    return true;
                }
            }
            catch (Exception ex)
            {
                ShowErrorMsg($"重新连接失败：{ex.Message}");
            }
            return false;
        }


        private void OpenQuantitativeSupplyWindow()
        {
            try
            {
                SwitchWindow(ref _mainWindow5, () => new ParameterSettingsWindow());
            }
            catch (Exception ex)
            {
                MessageBox.Show($"打开定量供应检验窗口时出错：{ex.Message}", "错误",
                    MessageBoxButton.OK, MessageBoxImage.Error);
            }
        }

        private void btn_setting_Click(object sender, RoutedEventArgs e)
        {
            OpenQuantitativeSupplyWindow();
        }


        private async System.Threading.Tasks.Task ReadAddrStatusDataAsync()
        {
            try
            {
                bool[] result = _modbusMaster?.ReadCoils(0x01, 71, 1);
                bool isTestRunning = result != null && result.Length > 0 && result[0];

                Dispatcher.Invoke(() =>
                {
                    if (isTestRunning)
                    {
                        status.Text = "正在运行";
                        statusPanel.Background = Brushes.Green;
                        if (!_wasRunning)
                        {
                            _testStartTime = DateTime.Now;
                            _recordAdded = false; // 测试刚开始，允许插入记录
                        }
                    }
                    else
                    {
                        status.Text = "空闲";
                        statusPanel.Background = Brushes.Blue;
                        // 状态从“运行”切换到“空闲”，且还没插入记录
                        if (_wasRunning && !_recordAdded)
                        {
                            AddTestRecord();      // 插入记录
                            _recordAdded = true;  // 标记已插入
                        }
                    }
                    _wasRunning = isTestRunning; // 更新上一次状态
                });
            }
            catch (Exception ex)
            {
                ShowErrorMsg($"读取运行状态失败：{ex.Message}");
            }
        }

        private void OpenQuantitativeSupplyWindow2()
        {
            try
            {
                SwitchWindow(ref _reportWindow, () => new ReportWindow());
            }
            catch (Exception ex)
            {
                MessageBox.Show($"打开定量供应检验窗口时出错：{ex.Message}", "错误",
                    MessageBoxButton.OK, MessageBoxImage.Error);
            }
        }


        private void AddTestRecord()
        {
            try
            {
                // 计算测试时长
                TimeSpan duration = DateTime.Now - _testStartTime;
                string durationStr = $"{duration.Minutes:00}:{duration.Seconds:00}";

                // 获取当前流量值
                double currentFlowRate = 0;
                if (!string.IsNullOrEmpty(speed.Text) && double.TryParse(speed.Text, out double flow))
                {
                    currentFlowRate = flow;
                }

                // 获取当前时间
                string currentTime = DateTime.Now.ToString("HH:mm");
                string currentDate = DateTime.Now.ToString("yy/MM/dd");

                // 添加到报表窗口（如果存在或创建）
                Dispatcher.Invoke(() =>
                {
                    // 如果窗口不存在，先创建但不显示
                    if (_reportWindow == null)
                    {
                        _reportWindow = new ReportWindow();
                    }

                    double temprate = 0;
                    if (!isReset)
                    {
                        temprate = currentFlowRate;
                        currentFlowRate = 0;
                    }
                    else
                    {

                    }

                    string No = ConfigurationManager.AppSettings["No"]?.ToString();
                    // 添加记录到窗口（无论窗口是否显示）
                    _reportWindow.AddRecord(currentTime, currentDate, currentFlowRate, durationStr, temprate, No);
                });

            }
            catch (Exception ex)
            {
                ShowErrorMsg($"记录测试数据失败：{ex.Message}");
            }
        }

        private async void BtnWrite400_Click1(object sender, RoutedEventArgs e)
        {
            _modbusMaster.WriteSingleCoil(1, 75, false);
            isReset = false;
            UpdateParameterButtonSelection(sender as Button);
        }

        //private void pressureDiff2_GotFocus(object sender, RoutedEventArgs e)
        //{

        //}
        private void pressureDiff2_GotFocus(object sender, RoutedEventArgs e)
        {

            SaveAppSetting("No", pressureDiff2.Text);

        }


        /// <summary>
        /// 保存 AppSettings 配置到配置文件
        /// </summary>
        /// <param name="key">配置键名</param>
        /// <param name="value">配置值</param>
        /// <returns>是否保存成功</returns>
        public bool SaveAppSetting(string key, string value)
        {
            try
            {
                // 1. 获取当前程序的配置文件路径（编译后的 exe.config）
                string configPath = AppDomain.CurrentDomain.SetupInformation.ConfigurationFile;

                // 2. 加载配置文件（ExeConfigurationFileMap 指定配置路径）
                ExeConfigurationFileMap configFileMap = new ExeConfigurationFileMap { ExeConfigFilename = configPath };
                Configuration config = ConfigurationManager.OpenMappedExeConfiguration(configFileMap, ConfigurationUserLevel.None);

                // 3. 处理 appSettings 节点
                if (config.AppSettings.Settings[key] == null)
                {
                    // 键不存在 → 新增配置
                    config.AppSettings.Settings.Add(key, value);
                }
                else
                {
                    // 键已存在 → 更新配置
                    config.AppSettings.Settings[key].Value = value;
                }

                // 4. 保存配置（重要！否则修改不生效）
                config.Save(ConfigurationSaveMode.Modified);

                // 5. 刷新 ConfigurationManager 缓存（可选，让后续读取能立即获取新值）
                ConfigurationManager.RefreshSection("appSettings");

                return true;
            }
            catch (Exception ex)
            {
                // 捕获异常（如权限不足、文件被占用等）
                MessageBox.Show($"保存配置失败：{ex.Message}", "错误", MessageBoxButton.OK, MessageBoxImage.Error);
                return false;
            }
        }

        private void settingtime_TextChanged(object sender, TextChangedEventArgs e)
        {

        }
    }


    public class TestRecord
    {
        public int Id { get; set; }
        public string Time { get; set; }//时间
        public string Date { get; set; }//日期
        public double FlowRate { get; set; } // 供氧流量L/min
        public string Duration { get; set; } // 测试时长
        public DateTime CreateTime { get; set; }

        public string HeadName { get; set; } // 表头名

        public double FlowRate2 { get; set; } // 供氧流量L/min

        public double FlowRate3 { get; set; } // 供氧流量L/min

        public string No { get; set; }
    }
}