using DeviceCommand.Devices;
using Prism.Commands;
using Prism.Ioc;
using System;
using System.Threading;
using System.Threading.Tasks;
using System.Windows.Input;
using UIShare.GlobalVariable;
using UIShare.ViewModelBase;

namespace DeviceEditModule.ViewModels
{
    /// <summary>
    /// ANEVH 高压源载一体机 控制面板 ViewModel
    /// </summary>
    public class ANEVH80ViewModel : NavigateViewModelBase, IDisposable
    {
        private readonly DeviceManager _dm;
        private ANEVH80? _dev;
        private CancellationTokenSource? _cts;

        private string _deviceName = "ANEVH80";
        public string DeviceName { get => _deviceName; set => SetProperty(ref _deviceName, value); }
        private bool _isConnected;
        public bool IsConnected { get => _isConnected; set => SetProperty(ref _isConnected, value); }
        private bool _isBusy;
        public bool IsBusy { get => _isBusy; set => SetProperty(ref _isBusy, value); }

        #region 输入参数 — 源模式
        private double _voltage;
        public double Voltage { get => _voltage; set => SetProperty(ref _voltage, value); }
        private double _current;
        public double Current { get => _current; set => SetProperty(ref _current, value); }
        private double _power;
        public double Power { get => _power; set => SetProperty(ref _power, value); }
        #endregion

        #region 输入参数 — 负载(SINK)参数
        private double _sinkCurrent;
        public double SinkCurrent { get => _sinkCurrent; set => SetProperty(ref _sinkCurrent, value); }
        private double _sinkPower;
        public double SinkPower { get => _sinkPower; set => SetProperty(ref _sinkPower, value); }
        #endregion

        #region 测量结果
        private double _measuredVoltage;
        public double MeasuredVoltage { get => _measuredVoltage; set => SetProperty(ref _measuredVoltage, value); }
        private double _measuredCurrent;
        public double MeasuredCurrent { get => _measuredCurrent; set => SetProperty(ref _measuredCurrent, value); }
        private double _measuredPower;
        public double MeasuredPower { get => _measuredPower; set => SetProperty(ref _measuredPower, value); }
        private string _responseLog = "";
        public string ResponseLog { get => _responseLog; set => SetProperty(ref _responseLog, value); }
        #endregion

        #region 命令
        public ICommand QueryIdn { get; } public ICommand Reset { get; }
        public ICommand OutOn { get; } public ICommand OutOff { get; }
        public ICommand SetV { get; } public ICommand SetI { get; } public ICommand SetP { get; }
        public ICommand SetSinkI { get; } public ICommand SetSinkP { get; }
        public ICommand QMeas { get; }
        #endregion

        public ANEVH80ViewModel(IContainerProvider cp) : base(cp)
        {
            _dm = cp.Resolve<DeviceManager>();
            QueryIdn = new DelegateCommand(async () => await Exec(async () => Log("IDN:" + await _dev!.查询设备信息Async(Ct()))));
            Reset = new DelegateCommand(async () => await Exec(async () => { await _dev!.复位Async(Ct()); Log("设备已复位"); }));
            OutOn = new DelegateCommand(async () => await Exec(async () => { await _dev!.设置输出开关Async(true, Ct()); Log("输出已开启"); }));
            OutOff = new DelegateCommand(async () => await Exec(async () => { await _dev!.设置输出开关Async(false, Ct()); Log("输出已关闭"); }));
            SetV = new DelegateCommand(async () => await Exec(async () => { await _dev!.设置电压Async(Voltage, Ct()); Log($"电压={Voltage}V"); }));
            SetI = new DelegateCommand(async () => await Exec(async () => { await _dev!.设置电流Async(Current, Ct()); Log($"电流={Current}A"); }));
            SetP = new DelegateCommand(async () => await Exec(async () => { await _dev!.设置功率Async(Power, Ct()); Log($"功率={Power}W"); }));
            SetSinkI = new DelegateCommand(async () => await Exec(async () => { await _dev!.设置负载电流Async(SinkCurrent, Ct()); Log($"负载电流={SinkCurrent}A"); }));
            SetSinkP = new DelegateCommand(async () => await Exec(async () => { await _dev!.设置负载功率Async(SinkPower, Ct()); Log($"负载功率={SinkPower}W"); }));
            QMeas = new DelegateCommand(async () => await Exec(async () =>
            {
                MeasuredVoltage = await _dev!.读取电压Async(Ct());
                MeasuredCurrent = await _dev!.读取电流Async(Ct());
                MeasuredPower = await _dev!.读取功率Async(Ct());
                Log($"测量→V:{MeasuredVoltage} I:{MeasuredCurrent} P:{MeasuredPower}");
            }));
            Initialize();
        }

        #region 初始化 / Navigation

        public void Initialize(string? deviceName = null)
        {
            ANEVH80? found = null; string? fn = null;
            if (deviceName != null && _dm.DeviceMap.TryGetValue(deviceName, out var d) && d is ANEVH80 e)
            { found = e; fn = deviceName; }
            else
            {
                foreach (var kv in _dm.DeviceMap)
                    if (kv.Value is ANEVH80 it) { found = it; fn = kv.Key; break; }
            }
            _dev = found;
            DeviceName = fn ?? "ANEVH80 (未找到)";
            IsConnected = _dev?.IsConnected ?? false;
            Log(found != null
                ? $"已关联设备 [{DeviceName}]，连接:{(IsConnected ? "已连接" : "未连接")}"
                : "未在 DeviceManager 中找到 ANEVH80 设备");
        }

        public override void OnNavigatedTo(NavigationContext context)
        {
            var pName = context.Parameters.GetValue<string?>("DeviceName");
            Initialize(pName);
        }

        #endregion

        #region 辅助

        private CancellationToken Ct() => (_cts = new CancellationTokenSource(TimeSpan.FromSeconds(10))).Token;

        private async Task Exec(Func<Task> action)
        {
            if (_dev == null) { Log("错误：未关联到设备实例，请检查设备配置。"); return; }
            if (IsBusy) return;
            IsBusy = true;
            try
            {
                await action();
                IsConnected = _dev.IsConnected;
            }
            catch (OperationCanceledException) { Log("命令超时或已取消。"); }
            catch (Exception ex) { Log($"错误：{ex.Message}"); }
            finally { IsBusy = false; }
        }

        private void Log(string message)
        {
            var line = $"[{DateTime.Now:HH:mm:ss}] {message}";
            ResponseLog = ResponseLog.Length > 4000
                ? line + "\n" + ResponseLog[..3000]
                : line + "\n" + ResponseLog;
        }

        #endregion

        public void Dispose()
        {
            _cts?.Cancel();
            _cts?.Dispose();
        }
    }
}