using System;
using System.Collections.Generic;
using System.Collections.ObjectModel;
using System.Configuration;
using System.IO;
using System.Linq;
using System.Windows;
using Prism.Commands;
using Prism.Mvvm;
using XP.Common.GeneralForm.Views;
using XP.Common.Localization;
using XP.Common.Logging.Interfaces;
using XP.Hardware.PLC.Configs;
using XP.Hardware.PLC.Helpers;
using XP.Hardware.PLC.Models;

namespace XP.Hardware.PLC.ViewModels
{
    /// <summary>
    /// PLC 信号地址定义编辑器 ViewModel | PLC signal address config editor ViewModel
    /// 提供信号表加载/编辑/保存和 PLC 连接参数配置功能
    /// </summary>
    public class PlcAddrConfigEditorViewModel : BindableBase
    {
        // === 依赖 | Dependencies ===
        private readonly XmlSignalParser _xmlParser;
        private readonly ConfigLoader _configLoader;
        private readonly ILoggerService _logger;

        // === 信号分组数据 | Signal group data ===

        /// <summary>
        /// 信号分组集合，每个 Group 对应一个 Tab 页 | Signal group collection, each Group maps to a Tab
        /// </summary>
        public ObservableCollection<SignalGroup> Groups { get; }

        private SignalGroup _selectedGroup;
        /// <summary>
        /// 当前选中的 Group（Tab 页）| Currently selected Group (Tab)
        /// </summary>
        public SignalGroup SelectedGroup
        {
            get => _selectedGroup;
            set => SetProperty(ref _selectedGroup, value);
        }

        // === PLC 连接参数 | PLC connection parameters ===

        private string _ipAddress;
        /// <summary>
        /// PLC IP 地址 | PLC IP address
        /// </summary>
        public string IpAddress
        {
            get => _ipAddress;
            set { if (SetProperty(ref _ipAddress, value)) HasUnsavedChanges = true; }
        }

        private int _port;
        /// <summary>
        /// PLC 端口号 | PLC port number
        /// </summary>
        public int Port
        {
            get => _port;
            set { if (SetProperty(ref _port, value)) HasUnsavedChanges = true; }
        }

        private short _rack;
        /// <summary>
        /// 机架号 | Rack number
        /// </summary>
        public short Rack
        {
            get => _rack;
            set { if (SetProperty(ref _rack, value)) HasUnsavedChanges = true; }
        }

        private short _slot;
        /// <summary>
        /// 插槽号 | Slot number
        /// </summary>
        public short Slot
        {
            get => _slot;
            set { if (SetProperty(ref _slot, value)) HasUnsavedChanges = true; }
        }

        private PlcType _selectedPlcType;
        /// <summary>
        /// 选中的 PLC 型号 | Selected PLC type
        /// </summary>
        public PlcType SelectedPlcType
        {
            get => _selectedPlcType;
            set { if (SetProperty(ref _selectedPlcType, value)) HasUnsavedChanges = true; }
        }

        /// <summary>
        /// PLC 类型枚举值列表，供下拉框绑定 | PLC type enum values for ComboBox binding
        /// </summary>
        public PlcType[] PlcTypes { get; } = Enum.GetValues(typeof(PlcType)).Cast<PlcType>().ToArray();

        private string _readDbBlock;
        /// <summary>
        /// 读取数据块 | Read data block
        /// </summary>
        public string ReadDbBlock
        {
            get => _readDbBlock;
            set { if (SetProperty(ref _readDbBlock, value)) HasUnsavedChanges = true; }
        }

        private int _readStartAddress;
        /// <summary>
        /// 读取起始地址 | Read start address
        /// </summary>
        public int ReadStartAddress
        {
            get => _readStartAddress;
            set { if (SetProperty(ref _readStartAddress, value)) HasUnsavedChanges = true; }
        }

        private int _readLength;
        /// <summary>
        /// 读取长度 | Read length
        /// </summary>
        public int ReadLength
        {
            get => _readLength;
            set { if (SetProperty(ref _readLength, value)) HasUnsavedChanges = true; }
        }

        private int _bulkReadIntervalMs = 100;
        /// <summary>
        /// 批量读取周期（毫秒）| Bulk read interval (ms)
        /// </summary>
        public int BulkReadIntervalMs
        {
            get => _bulkReadIntervalMs;
            set { if (SetProperty(ref _bulkReadIntervalMs, value)) HasUnsavedChanges = true; }
        }

        private int _connectTimeoutMs;
        /// <summary>
        /// 连接超时（毫秒）| Connect timeout (ms)
        /// </summary>
        public int ConnectTimeoutMs
        {
            get => _connectTimeoutMs;
            set { if (SetProperty(ref _connectTimeoutMs, value)) HasUnsavedChanges = true; }
        }

        private int _readTimeoutMs;
        /// <summary>
        /// 读取超时（毫秒）| Read timeout (ms)
        /// </summary>
        public int ReadTimeoutMs
        {
            get => _readTimeoutMs;
            set { if (SetProperty(ref _readTimeoutMs, value)) HasUnsavedChanges = true; }
        }

        private int _writeTimeoutMs;
        /// <summary>
        /// 写入超时（毫秒）| Write timeout (ms)
        /// </summary>
        public int WriteTimeoutMs
        {
            get => _writeTimeoutMs;
            set { if (SetProperty(ref _writeTimeoutMs, value)) HasUnsavedChanges = true; }
        }

        private bool _bReConnect;
        /// <summary>
        /// 断线重连 | Auto reconnect on disconnect
        /// </summary>
        public bool BReConnect
        {
            get => _bReConnect;
            set { if (SetProperty(ref _bReConnect, value)) HasUnsavedChanges = true; }
        }

        // === 文件路径 | File path ===

        private string _xmlFilePath;
        /// <summary>
        /// XML 配置文件路径 | XML config file path
        /// </summary>
        public string XmlFilePath
        {
            get => _xmlFilePath;
            set => SetProperty(ref _xmlFilePath, value);
        }

        // === 状态标志 | Status flags ===

        private bool _hasUnsavedChanges;
        /// <summary>
        /// 是否有未保存的修改 | Whether there are unsaved changes
        /// </summary>
        public bool HasUnsavedChanges
        {
            get => _hasUnsavedChanges;
            set => SetProperty(ref _hasUnsavedChanges, value);
        }

        /// <summary>
        /// 窗口关闭回调 | Window close action callback
        /// </summary>
        public Action CloseAction { get; set; }

        /// <summary>
        /// 支持的数据类型列表，供下拉框绑定 | Supported data types for ComboBox binding
        /// </summary>
        public string[] SupportedDataTypes { get; } = SignalEntry.SupportedTypes;

        // === 命令 | Commands ===

        /// <summary>保存命令 | Save command</summary>
        public DelegateCommand SaveCommand { get; }

        /// <summary>取消命令 | Cancel command</summary>
        public DelegateCommand CancelCommand { get; }

        /// <summary>重新加载命令 | Reload command</summary>
        public DelegateCommand ReloadCommand { get; }

        /// <summary>添加信号命令（操作当前选中 Group）| Add signal command (operates on selected Group)</summary>
        public DelegateCommand AddSignalCommand { get; }

        /// <summary>删除信号命令（操作当前选中 Group）| Delete signal command (operates on selected Group)</summary>
        public DelegateCommand DeleteSignalCommand { get; }

        private SignalEntry _selectedSignal;
        /// <summary>
        /// 当前选中的信号 | Currently selected signal
        /// </summary>
        public SignalEntry SelectedSignal
        {
            get => _selectedSignal;
            set => SetProperty(ref _selectedSignal, value);
        }

        /// <summary>新增 Group 命令 | Add Group command</summary>
        public DelegateCommand AddGroupCommand { get; }

        /// <summary>删除 Group 命令 | Delete Group command</summary>
        public DelegateCommand DeleteGroupCommand { get; }

        /// <summary>重命名 Group 命令 | Rename Group command</summary>
        public DelegateCommand RenameGroupCommand { get; }

        /// <summary>
        /// 构造函数 | Constructor
        /// </summary>
        /// <param name="xmlParser">XML 信号解析器 | XML signal parser</param>
        /// <param name="configLoader">配置加载器 | Config loader</param>
        /// <param name="logger">日志服务 | Logger service</param>
        public PlcAddrConfigEditorViewModel(
            XmlSignalParser xmlParser,
            ConfigLoader configLoader,
            ILoggerService logger)
        {
            _xmlParser = xmlParser ?? throw new ArgumentNullException(nameof(xmlParser));
            _configLoader = configLoader ?? throw new ArgumentNullException(nameof(configLoader));
            _logger = logger?.ForModule<PlcAddrConfigEditorViewModel>() ?? throw new ArgumentNullException(nameof(logger));

            // 初始化信号分组集合 | Initialize signal group collection
            Groups = new ObservableCollection<SignalGroup>();

            // 加载 PLC 连接参数 | Load PLC connection parameters
            LoadPlcConfig();

            // 读取 XML 文件路径，未配置时使用默认路径 | Read XML file path, fallback to default
            var configuredPath = ConfigurationManager.AppSettings["PlcAddrDfnXmlPath"];
            XmlFilePath = !string.IsNullOrWhiteSpace(configuredPath)
                ? configuredPath
                : Path.Combine(AppDomain.CurrentDomain.BaseDirectory, "PlcAddrDfn.xml");

            // 初始化命令 | Initialize commands
            SaveCommand = new DelegateCommand(ExecuteSave);
            CancelCommand = new DelegateCommand(ExecuteCancel);
            ReloadCommand = new DelegateCommand(ExecuteReload);

            // 添加信号到当前选中 Group | Add signal to currently selected Group
            AddSignalCommand = new DelegateCommand(() =>
            {
                if (SelectedGroup == null)
                {
                    MessageBox.Show(
                        LocalizationHelper.Get("PlcAddrEditor_NoGroupSelected"),
                        LocalizationHelper.Get("PlcAddrEditor_Title"),
                        MessageBoxButton.OK, MessageBoxImage.Warning);
                    return;
                }
                var signal = new SignalEntry { OwnerCollection = SelectedGroup.Signals };
                SelectedGroup.Signals.Add(signal);
                HasUnsavedChanges = true;
            });

            // 从当前选中 Group 删除信号 | Delete signal from currently selected Group
            DeleteSignalCommand = new DelegateCommand(() =>
            {
                if (SelectedSignal == null) return;
                if (MessageBox.Show(
                    LocalizationHelper.Get("PlcAddrEditor_DeleteConfirm"),
                    LocalizationHelper.Get("PlcAddrEditor_Title"),
                    MessageBoxButton.YesNo, MessageBoxImage.Question) == MessageBoxResult.Yes)
                {
                    SelectedSignal.OwnerCollection?.Remove(SelectedSignal);
                    SelectedSignal = null;
                    HasUnsavedChanges = true;
                }
            });

            // 新增 Group | Add new Group
            AddGroupCommand = new DelegateCommand(ExecuteAddGroup);

            // 删除当前选中 Group | Delete currently selected Group
            DeleteGroupCommand = new DelegateCommand(ExecuteDeleteGroup);

            // 重命名当前选中 Group | Rename currently selected Group
            RenameGroupCommand = new DelegateCommand(ExecuteRenameGroup);

            // 加载信号数据 | Load signal data
            LoadSignals();

            _logger.Info("PLC 信号地址定义编辑器 ViewModel 初始化完成 | PlcAddrConfigEditorViewModel initialized");
        }

        /// <summary>
        /// 从 ConfigLoader 加载 PLC 连接参数并填充绑定属性 | Load PLC config and populate binding properties
        /// </summary>
        private void LoadPlcConfig()
        {
            try
            {
                var config = _configLoader.LoadPlcConfig();
                _ipAddress = config.IpAddress;
                _port = config.Port;
                _rack = config.Rack;
                _slot = config.Slot;
                _selectedPlcType = config.PlcType;
                _readDbBlock = config.ReadDbBlock;
                _readStartAddress = config.ReadStartAddress;
                _readLength = config.ReadLength;
                _bulkReadIntervalMs = config.BulkReadIntervalMs;
                _connectTimeoutMs = config.ConnectTimeoutMs;
                _readTimeoutMs = config.ReadTimeoutMs;
                _writeTimeoutMs = config.WriteTimeoutMs;
                _bReConnect = config.bReConnect;
            }
            catch (Exception ex)
            {
                _logger.Warn($"加载 PLC 配置失败，使用默认值 | Failed to load PLC config, using defaults: {ex.Message}");
            }
        }

        /// <summary>
        /// 加载信号分组数据 | Load signal group data
        /// 调用 XmlSignalParser.LoadFromFile 获取 List&lt;SignalGroup&gt;，填充 Groups 集合
        /// </summary>
        private void LoadSignals()
        {
            try
            {
                var groups = _xmlParser.LoadFromFile(XmlFilePath);

                Groups.Clear();
                foreach (var group in groups)
                {
                    // 为每个 Signal 设置 OwnerCollection | Set OwnerCollection for each Signal
                    foreach (var signal in group.Signals)
                    {
                        signal.OwnerCollection = group.Signals;
                    }
                    Groups.Add(group);
                }

                // 默认选中第一个 Group | Select first Group by default
                SelectedGroup = Groups.FirstOrDefault();

                HasUnsavedChanges = false;
                var totalSignals = groups.Sum(g => g.Signals.Count);
                _logger.Info($"成功加载信号数据：共 {totalSignals} 条信号，来自 {groups.Count} 个 Group | Loaded {totalSignals} signals from {groups.Count} groups");
            }
            catch (Exception ex)
            {
                _logger.Error(ex, $"加载信号数据失败 | Failed to load signals: {ex.Message}");
                Groups.Clear();
            }
        }

        /// <summary>
        /// 执行新增 Group 操作 | Execute add Group operation
        /// 弹出输入框获取 Group ID 和 DBNumber，检查 ID 唯一性
        /// </summary>
        private void ExecuteAddGroup()
        {
            // 弹出输入框获取 Group ID，内置唯一性验证 | Prompt for Group ID with uniqueness validation
            var groupId = InputDialog.Show(
                LocalizationHelper.Get("PlcAddrEditor_InputGroupId"),
                LocalizationHelper.Get("PlcAddrEditor_AddGroup"),
                validate: input =>
                {
                    if (string.IsNullOrWhiteSpace(input))
                        return LocalizationHelper.Get("Message_InvalidInput");
                    if (Groups.Any(g => string.Equals(g.GroupId, input, StringComparison.Ordinal)))
                        return LocalizationHelper.Get("PlcAddrEditor_GroupIdDuplicate");
                    return null;
                });

            if (groupId == null)
                return;

            // 弹出输入框获取 DBNumber，内置非负整数验证 | Prompt for DBNumber with non-negative integer validation
            var dbNumberStr = InputDialog.Show(
                LocalizationHelper.Get("PlcAddrEditor_InputDbNumber"),
                LocalizationHelper.Get("PlcAddrEditor_AddGroup"),
                "0",
                validate: input =>
                {
                    if (!int.TryParse(input, out int val) || val < 0)
                        return LocalizationHelper.Get("PlcAddrEditor_InvalidDbNumber");
                    return null;
                });

            if (dbNumberStr == null)
                return;

            var dbNumber = int.Parse(dbNumberStr);

            // 创建新 Group 并添加到集合 | Create new Group and add to collection
            var newGroup = new SignalGroup
            {
                GroupId = groupId,
                DBNumber = dbNumber,
                Signals = new ObservableCollection<SignalEntry>()
            };
            Groups.Add(newGroup);
            SelectedGroup = newGroup;
            HasUnsavedChanges = true;

            _logger.Info($"新增 Group: ID={groupId}, DBNumber={dbNumber} | Added Group: ID={groupId}, DBNumber={dbNumber}");
        }

        /// <summary>
        /// 执行重命名 Group 操作 | Execute rename Group operation
        /// 弹出输入框获取新名称，检查唯一性
        /// </summary>
        private void ExecuteRenameGroup()
        {
            if (SelectedGroup == null)
            {
                MessageBox.Show(
                    LocalizationHelper.Get("PlcAddrEditor_NoGroupSelected"),
                    LocalizationHelper.Get("PlcAddrEditor_Title"),
                    MessageBoxButton.OK, MessageBoxImage.Warning);
                return;
            }

            var oldId = SelectedGroup.GroupId;
            var newId = InputDialog.Show(
                LocalizationHelper.Get("PlcAddrEditor_InputNewGroupId"),
                LocalizationHelper.Get("PlcAddrEditor_RenameGroup"),
                oldId,
                validate: input =>
                {
                    if (string.IsNullOrWhiteSpace(input))
                        return LocalizationHelper.Get("Message_InvalidInput");
                    if (input == oldId)
                        return null; // 没改名，允许通过 | Same name, allow
                    if (Groups.Any(g => string.Equals(g.GroupId, input, StringComparison.Ordinal)))
                        return LocalizationHelper.Get("PlcAddrEditor_GroupIdDuplicate");
                    return null;
                });

            if (newId == null || newId == oldId)
                return;

            SelectedGroup.GroupId = newId;
            HasUnsavedChanges = true;
            _logger.Info($"重命名 Group: {oldId} → {newId} | Renamed Group: {oldId} → {newId}");
        }

        /// <summary>
        /// 执行删除 Group 操作 | Execute delete Group operation
        /// 删除前确认提示
        /// </summary>
        private void ExecuteDeleteGroup()
        {
            if (SelectedGroup == null)
            {
                MessageBox.Show(
                    LocalizationHelper.Get("PlcAddrEditor_NoGroupSelected"),
                    LocalizationHelper.Get("PlcAddrEditor_Title"),
                    MessageBoxButton.OK, MessageBoxImage.Warning);
                return;
            }

            var result = MessageBox.Show(
                string.Format(LocalizationHelper.Get("PlcAddrEditor_DeleteGroupConfirm"), SelectedGroup.GroupId),
                LocalizationHelper.Get("PlcAddrEditor_Title"),
                MessageBoxButton.YesNo, MessageBoxImage.Question);

            if (result != MessageBoxResult.Yes)
                return;

            var groupId = SelectedGroup.GroupId;
            Groups.Remove(SelectedGroup);
            SelectedGroup = Groups.FirstOrDefault();
            HasUnsavedChanges = true;

            _logger.Info($"删除 Group: ID={groupId} | Deleted Group: ID={groupId}");
        }

        /// <summary>
        /// 执行保存操作 | Execute save operation
        /// 验证所有 Group 的 ID 唯一性、DBNumber 有效性、信号名称全局唯一性，然后保存
        /// </summary>
        private void ExecuteSave()
        {
            try
            {
                var errors = new List<string>();

                // 1. 验证所有 Group 的 ID 唯一性 | Validate Group ID uniqueness
                var duplicateGroupIds = Groups
                    .GroupBy(g => g.GroupId)
                    .Where(g => g.Count() > 1)
                    .Select(g => g.Key)
                    .ToList();
                foreach (var dupId in duplicateGroupIds)
                {
                    errors.Add($"Group ID 重复 | Duplicate Group ID: {dupId}");
                }

                // 2. 验证所有 Group 的 DBNumber 有效性（非负整数）| Validate DBNumber validity (non-negative integer)
                foreach (var group in Groups)
                {
                    if (group.DBNumber < 0)
                    {
                        errors.Add($"Group [{group.GroupId}] 的 DBNumber 无效（必须为非负整数）| Group [{group.GroupId}] has invalid DBNumber (must be non-negative)");
                    }
                }

                // 3. 验证每个 Group 内信号名称唯一性 | Validate signal name uniqueness within each Group
                foreach (var group in Groups)
                {
                    var intraGroupDuplicates = group.Signals
                        .Where(s => !string.IsNullOrWhiteSpace(s.Name))
                        .GroupBy(s => s.Name)
                        .Where(g => g.Count() > 1)
                        .Select(g => g.Key)
                        .ToList();
                    foreach (var dupName in intraGroupDuplicates)
                    {
                        errors.Add($"Group [{group.GroupId}] 内信号名称重复 | Duplicate signal name in Group [{group.GroupId}]: {dupName}");
                    }
                }

                // 4. 验证所有 Group 中信号名称全局唯一性（跨 Group 检查）| Validate global signal name uniqueness across Groups
                var allSignals = Groups.SelectMany(g => g.Signals.Select(s => new { Signal = s, GroupId = g.GroupId })).ToList();
                var crossGroupDuplicates = allSignals
                    .Where(x => !string.IsNullOrWhiteSpace(x.Signal.Name))
                    .GroupBy(x => x.Signal.Name)
                    .Where(g => g.Select(x => x.GroupId).Distinct().Count() > 1)
                    .ToList();
                foreach (var dup in crossGroupDuplicates)
                {
                    var groupIds = string.Join(", ", dup.Select(x => x.GroupId).Distinct());
                    errors.Add($"跨 Group 信号名称重复 | Cross-Group duplicate signal name: {dup.Key} (Groups: {groupIds})");
                }

                // 5. 检查所有信号条目的字段验证 | Check field validation for all signal entries
                foreach (var group in Groups)
                {
                    foreach (var signal in group.Signals.Where(s => !string.IsNullOrEmpty(s.ValidationError)))
                    {
                        errors.Add($"Group [{group.GroupId}] 信号 [{signal.Name}]: {signal.ValidationError}");
                    }
                }

                if (errors.Count > 0)
                {
                    var errorMsg = LocalizationHelper.Get("PlcAddrEditor_ValidationFailed") + "\n" + string.Join("\n", errors);
                    MessageBox.Show(errorMsg, LocalizationHelper.Get("PlcAddrEditor_Title"), MessageBoxButton.OK, MessageBoxImage.Warning);
                    return;
                }

                // 保存信号配置到 XML | Save signal configuration to XML
                _xmlParser.SaveToFile(XmlFilePath, Groups.ToList());

                // 保存 PlcConfig 参数到 App.config | Save PlcConfig parameters to App.config
                SavePlcConfig();

                HasUnsavedChanges = false;
                _logger.Info("信号数据和 PLC 配置保存成功 | Signals and PLC config saved successfully");
                MessageBox.Show(LocalizationHelper.Get("PlcAddrEditor_SaveSuccess"), LocalizationHelper.Get("PlcAddrEditor_Title"), MessageBoxButton.OK, MessageBoxImage.Information);
            }
            catch (Exception ex)
            {
                _logger.Error(ex, $"保存失败 | Save failed: {ex.Message}");
                MessageBox.Show(LocalizationHelper.Get("PlcAddrEditor_SaveFailed") + $"\n{ex.Message}", LocalizationHelper.Get("PlcAddrEditor_Title"), MessageBoxButton.OK, MessageBoxImage.Error);
            }
        }

        /// <summary>
        /// 执行取消操作，关闭窗口 | Execute cancel, close window
        /// </summary>
        private void ExecuteCancel()
        {
            CloseAction?.Invoke();
        }

        /// <summary>
        /// 执行重新加载操作 | Execute reload operation
        /// 存在未保存修改时提示确认
        /// </summary>
        private void ExecuteReload()
        {
            var result = MessageBox.Show(
                LocalizationHelper.Get("PlcAddrEditor_ReloadConfirm"),
                LocalizationHelper.Get("PlcAddrEditor_Title"),
                MessageBoxButton.YesNo,
                MessageBoxImage.Question);

            if (result != MessageBoxResult.Yes)
                return;

            LoadSignals();
        }

        /// <summary>
        /// 保存 PLC 连接参数到 App.config（已移除 WriteDbBlock）| Save PLC connection parameters to App.config (WriteDbBlock removed)
        /// </summary>
        private void SavePlcConfig()
        {
            try
            {
                var config = ConfigurationManager.OpenExeConfiguration(ConfigurationUserLevel.None);
                var settings = config.AppSettings.Settings;

                void SetOrAdd(string key, string value)
                {
                    if (settings[key] == null)
                        settings.Add(key, value);
                    else
                        settings[key].Value = value;
                }

                SetOrAdd("Plc:IpAddress", IpAddress ?? string.Empty);
                SetOrAdd("Plc:Port", Port.ToString());
                SetOrAdd("Plc:Rack", Rack.ToString());
                SetOrAdd("Plc:Slot", Slot.ToString());
                SetOrAdd("Plc:PlcType", SelectedPlcType.ToString());
                SetOrAdd("Plc:ReadDbBlock", ReadDbBlock ?? string.Empty);
                SetOrAdd("Plc:ReadStartAddress", ReadStartAddress.ToString());
                SetOrAdd("Plc:ReadLength", ReadLength.ToString());
                SetOrAdd("Plc:BulkReadIntervalMs", BulkReadIntervalMs.ToString());
                SetOrAdd("Plc:ConnectTimeoutMs", ConnectTimeoutMs.ToString());
                SetOrAdd("Plc:ReadTimeoutMs", ReadTimeoutMs.ToString());
                SetOrAdd("Plc:WriteTimeoutMs", WriteTimeoutMs.ToString());
                SetOrAdd("Plc:bReConnect", BReConnect.ToString());

                config.Save(ConfigurationSaveMode.Modified);
                ConfigurationManager.RefreshSection("appSettings");
                _logger.Info("PLC 配置参数已保存到 App.config | PLC config saved to App.config");
            }
            catch (Exception ex)
            {
                _logger.Warn($"保存 PLC 配置到 App.config 失败 | Failed to save PLC config to App.config: {ex.Message}");
            }
        }
    }
}