using System.Collections.Concurrent;
using CommunityToolkit.Mvvm.ComponentModel;
using YZWater.Core.Services;

namespace YZWater.Core.Models;

/// <summary>
/// PLC 数据模型 - 内存数据快照
/// </summary>
public partial class PlcDataModel : ObservableObject
{
    // ═══════════════════════════════════════════════
    //  水箱液位
    // ═══════════════════════════════════════════════
    [ObservableProperty] private float _tank1Level;
    [ObservableProperty] private float _tank2Level;
    [ObservableProperty] private float _tank3Level;
    [ObservableProperty] private float _tank4Level;

    // ═══════════════════════════════════════════════
    //  流量
    // ═══════════════════════════════════════════════
    [ObservableProperty] private float _inflowRate;
    [ObservableProperty] private float _outflowRate;
    [ObservableProperty] private float _flowDelta;

    // ═══════════════════════════════════════════════
    //  泵状态 (0-4)
    // ═══════════════════════════════════════════════
    [ObservableProperty] private bool _pump1Running;
    [ObservableProperty] private bool _pump2Running;
    [ObservableProperty] private bool _pump3Running;
    [ObservableProperty] private bool _pump4Running;
    [ObservableProperty] private bool _pump5Running;

    // 泵故障
    [ObservableProperty] private bool _pump1Fault;
    [ObservableProperty] private bool _pump2Fault;
    [ObservableProperty] private bool _pump3Fault;
    [ObservableProperty] private bool _pump4Fault;
    [ObservableProperty] private bool _pump5Fault;

    // 泵频率
    [ObservableProperty] private float _pump1Freq;
    [ObservableProperty] private float _pump2Freq;
    [ObservableProperty] private float _pump3Freq;
    [ObservableProperty] private float _pump4Freq;
    [ObservableProperty] private float _pump5Freq;

    // 泵电流
    [ObservableProperty] private float _pump1Current;
    [ObservableProperty] private float _pump2Current;
    [ObservableProperty] private float _pump3Current;
    [ObservableProperty] private float _pump4Current;
    [ObservableProperty] private float _pump5Current;

    // ═══════════════════════════════════════════════
    //  风机状态
    // ═══════════════════════════════════════════════
    [ObservableProperty] private bool _fan1Running;
    [ObservableProperty] private bool _fan2Running;

    [ObservableProperty] private bool _fan1Fault;
    [ObservableProperty] private bool _fan2Fault;

    // ═══════════════════════════════════════════════
    //  阀门位置 (0-3, 0=100=全关, 100=全开)
    // ═══════════════════════════════════════════════
    [ObservableProperty] private int _valve1Position;
    [ObservableProperty] private int _valve2Position;
    [ObservableProperty] private int _valve3Position;
    [ObservableProperty] private int _valve4Position;

    // ═══════════════════════════════════════════════
    //  系统状态
    // ═══════════════════════════════════════════════
    [ObservableProperty] private bool _isAutoMode;

    // ═══════════════════════════════════════════════
    //  数据质量
    // ═══════════════════════════════════════════════
    [ObservableProperty] private DateTime _lastReadTime;
    [ObservableProperty] private bool _isDataValid;
    [ObservableProperty] private bool _isPlcConnected;

    // ═══════════════════════════════════════════════
    //  动态寄存器（由 ProjectProfile 驱动）
    // ═══════════════════════════════════════════════

    /// <summary>模拟量动态寄存器（名称 → 值），由项目档案驱动</summary>
    public ConcurrentDictionary<string, float> AnalogRegisters { get; } = new();

    /// <summary>数字量动态寄存器（名称 → 值），由项目档案驱动</summary>
    public ConcurrentDictionary<string, bool> DigitalRegisters { get; } = new();

    // ═══════════════════════════════════════════════
    //  测点级数据质量（OPC 风格的 Good/Bad）
    // ═══════════════════════════════════════════════

    /// <summary>
    /// 测点质量（名称 → 最近一次读取是否成功）。
    /// 读取失败的测点保留上一次有效值，只把质量位置为 Bad，
    /// 这样单个坏地址不会把整轮数据打成零，也不会有零被当成真实值使用。
    /// </summary>
    private readonly ConcurrentDictionary<string, bool> _tagQuality = new();

    /// <summary>
    /// 测点质量是否为 Bad（读不到/从未读到）。质量表里没有的键视为非 Bad：
    /// 那可能是旧版硬编码测点，或客户端模式（服务端只传寄存器值、不传质量表），
    /// 这种情况下由调用方自己的默认值语义负责。
    /// </summary>
    public bool IsTagBad(string key)
        => _tagQuality.TryGetValue(key, out var readable) && !readable;

    /// <summary>
    /// 记录测点质量。
    /// 返回本次是否发生跳变以及跳变前的质量，调用方据此决定是否需要告警
    /// （Good→Bad 才需要通知操作员，Bad→Good 由通信层记恢复日志）。
    /// </summary>
    public (bool Changed, bool WasReadable) SetTagQuality(string key, bool readable)
    {
        // 先取旧值再写：AddOrUpdate 返回的是"新值"，拿它比较永远得不出跳变
        var known = _tagQuality.TryGetValue(key, out var previous);
        _tagQuality[key] = readable;
        return (known && previous != readable, previous);
    }

    /// <summary>
    /// 初始化动态寄存器（根据项目档案创建空条目）
    /// </summary>
    public void InitializeDynamicRegisters(ProjectProfile profile)
    {
        AnalogRegisters.Clear();
        DigitalRegisters.Clear();

        // 泵相关
        foreach (var pump in profile.Pumps)
        {
            if (!string.IsNullOrEmpty(pump.CurrentAddress))
                AnalogRegisters[$"{pump.Name}.Current"] = 0;
            if (!string.IsNullOrEmpty(pump.RunAddress))
                DigitalRegisters[$"{pump.Name}.Run"] = false;
            if (!string.IsNullOrEmpty(pump.FaultAddress))
                DigitalRegisters[$"{pump.Name}.Fault"] = false;
            if (!string.IsNullOrEmpty(pump.AutoStateAddress))
                DigitalRegisters[$"{pump.Name}.AutoMode"] = false;
            if (!string.IsNullOrEmpty(pump.DailyHoursAddress))
                AnalogRegisters[$"{pump.Name}.DailyHours"] = 0;
            if (!string.IsNullOrEmpty(pump.DailyMinutesAddress))
                AnalogRegisters[$"{pump.Name}.DailyMinutes"] = 0;
        }

        // 水箱/水池
        foreach (var tank in profile.Tanks)
        {
            if (!string.IsNullOrEmpty(tank.LevelAddress))
                AnalogRegisters[$"{tank.Name}.Level"] = 0;
            // 动态启泵液位：数量跟随项目泵数（至少检查 3 个以兼容旧配置）
            var pumpThresholdCount = Math.Max(3, profile.Pumps.Count);
            for (int i = 1; i <= pumpThresholdCount; i++)
            {
                var addr = tank.GetStartPumpLevelAddress(i);
                if (!string.IsNullOrEmpty(addr))
                    AnalogRegisters[$"{tank.Name}.StartPump{i}Level"] = 0;
            }
            if (!string.IsNullOrEmpty(tank.StopLevelAddress))
                AnalogRegisters[$"{tank.Name}.StopLevel"] = 0;
            if (!string.IsNullOrEmpty(tank.ProtectionLevelAddress))
                AnalogRegisters[$"{tank.Name}.ProtectionLevel"] = 0;
        }

        // 仪表
        foreach (var gauge in profile.Gauges)
        {
            if (!string.IsNullOrEmpty(gauge.ValueAddress))
                AnalogRegisters[$"{gauge.Name}.Value"] = 0;
            if (!string.IsNullOrEmpty(gauge.HighSetAddress))
                AnalogRegisters[$"{gauge.Name}.HighSet"] = 0;
            if (!string.IsNullOrEmpty(gauge.LowSetAddress))
                AnalogRegisters[$"{gauge.Name}.LowSet"] = 0;
        }

        // 通用传感器
        foreach (var sensor in profile.Sensors)
        {
            if (!string.IsNullOrEmpty(sensor.Address))
                AnalogRegisters[$"{sensor.Name}.Value"] = 0;
        }

        // 通用数字量输入（如变频器故障）
        foreach (var di in profile.DigitalInputs)
        {
            if (!string.IsNullOrEmpty(di.Address))
                DigitalRegisters[$"DI.{di.Name}"] = false;
        }

        // 通用数字量输出（如复位按钮）
        foreach (var do_ in profile.DigitalOutputs)
        {
            if (!string.IsNullOrEmpty(do_.Address))
                DigitalRegisters[$"DO.{do_.Name}"] = false;
        }

        // 全局中控/屏控：所有泵共用一个地址，读键约定与 PlcPollingService 一致（挂在第一个泵名下）。
        // 不登记这个键的话它永远"未登记"，IsTagBad 判不出 Bad，首轮就会把默认 false 当成"中控"放行写操作。
        if (!string.IsNullOrEmpty(profile.ModeSelectAddress) && profile.Pumps.Count > 0)
            DigitalRegisters[$"{profile.Pumps[0].Name}.ModeSelect"] = false;

        // 档案里的测点初始质量为 Bad：读到过一次成功才转 Good。
        // 地址填错/被轮询跳过的测点因此一直是 Bad，消费者不会拿零值去做判断。
        _tagQuality.Clear();
        foreach (var key in AnalogRegisters.Keys) _tagQuality[key] = false;
        foreach (var key in DigitalRegisters.Keys) _tagQuality[key] = false;
    }

    /// <summary>获取动态模拟量寄存器值</summary>
    public float GetAnalogRegister(string key, float defaultValue = 0)
        => AnalogRegisters.TryGetValue(key, out var value) ? value : defaultValue;

    /// <summary>获取动态数字量寄存器值</summary>
    public bool GetDigitalRegister(string key, bool defaultValue = false)
        => DigitalRegisters.TryGetValue(key, out var value) ? value : defaultValue;

    /// <summary>
    /// 复制另一份模型的动态寄存器与测点质量。
    /// UI 线程用快照取值，不能直接引用轮询线程正在写入的字典，
    /// 但档案驱动的数据都在这两个字典里，不复制就等于读到的全是默认零值。
    /// </summary>
    public void CopyDynamicFrom(PlcDataModel source)
    {
        AnalogRegisters.Clear();
        DigitalRegisters.Clear();
        _tagQuality.Clear();

        foreach (var (key, value) in source.AnalogRegisters) AnalogRegisters[key] = value;
        foreach (var (key, value) in source.DigitalRegisters) DigitalRegisters[key] = value;
        foreach (var (key, value) in source._tagQuality) _tagQuality[key] = value;
    }

    // ═══════════════════════════════════════════════
    //  计算属性
    // ═══════════════════════════════════════════════
    public int RunningPumpCount => (Pump1Running ? 1 : 0) + (Pump2Running ? 1 : 0) +
                                   (Pump3Running ? 1 : 0) + (Pump4Running ? 1 : 0) +
                                   (Pump5Running ? 1 : 0);

    public int RunningFanCount => (Fan1Running ? 1 : 0) + (Fan2Running ? 1 : 0);

    public bool HasAnyFault => Pump1Fault || Pump2Fault || Pump3Fault || Pump4Fault || Pump5Fault ||
                               Fan1Fault || Fan2Fault;

    /// <summary>数据可用于记录/控制（Mock 模式视为始终有效；读取失败整轮作废时 IsDataValid=false）</summary>
    public bool HasValidData => MockPlcService.IsEnabled || (IsPlcConnected && IsDataValid);

    /// <summary>
    /// 获取泵运行状态
    /// </summary>
    public bool GetPumpRunning(int index) => index switch
    {
        0 => Pump1Running,
        1 => Pump2Running,
        2 => Pump3Running,
        3 => Pump4Running,
        4 => Pump5Running,
        _ => false
    };

    /// <summary>
    /// 获取泵故障状态
    /// </summary>
    public bool GetPumpFault(int index) => index switch
    {
        0 => Pump1Fault,
        1 => Pump2Fault,
        2 => Pump3Fault,
        3 => Pump4Fault,
        4 => Pump5Fault,
        _ => false
    };

    /// <summary>
    /// 获取泵频率
    /// </summary>
    public float GetPumpFreq(int index) => index switch
    {
        0 => Pump1Freq,
        1 => Pump2Freq,
        2 => Pump3Freq,
        3 => Pump4Freq,
        4 => Pump5Freq,
        _ => 0
    };

    /// <summary>
    /// 获取泵电流
    /// </summary>
    public float GetPumpCurrent(int index) => index switch
    {
        0 => Pump1Current,
        1 => Pump2Current,
        2 => Pump3Current,
        3 => Pump4Current,
        4 => Pump5Current,
        _ => 0
    };
}