using System;
using Prism.Events;
using XP.Common.Logging.Interfaces;
using XP.Hardware.RaySource.Abstractions;
using XP.Hardware.RaySource.Abstractions.Enums;
using XP.Hardware.RaySource.Abstractions.Events;

namespace XP.Hardware.RaySource.Implementations
{
    /// <summary>
    /// 模拟射线源实现 | Simulated X-Ray Source Implementation
    /// 用于开发和调试环境，无需真实硬件 | For development and debugging without real hardware
    /// </summary>
    public class SimulatedXRaySource : XRaySourceBase
    {
        #region 依赖注入字段

        private readonly IEventAggregator _eventAggregator;
        private readonly ILoggerService _logger;

        #endregion

        #region 内部状态

        private bool _isOn;
        private float _setVoltage;
        private float _setCurrent;
        private float _setFocus;
        private readonly Random _random = new Random();

        #endregion

        #region 构造函数

        /// <summary>
        /// 构造函数，注入依赖
        /// </summary>
        /// <param name="eventAggregator">Prism 事件聚合器</param>
        /// <param name="logger">日志服务</param>
        public SimulatedXRaySource(IEventAggregator eventAggregator, ILoggerService logger)
        {
            _eventAggregator = eventAggregator ?? throw new ArgumentNullException(nameof(eventAggregator));
            _logger = logger?.ForModule<SimulatedXRaySource>() ?? throw new ArgumentNullException(nameof(logger));
        }

        public override string SourceName => "Simulated X-Ray Source";

        #endregion

        #region IXRaySource 方法实现

        /// <summary>
        /// 初始化射线源
        /// </summary>
        public override XRayResult Initialize()
        {
            _isInitialized = true;
            _logger.Info("[Simulated] 射线源初始化成功");
            return XRayResult.Ok();
        }

        /// <summary>
        /// 连接 PVI 变量
        /// </summary>
        public override XRayResult ConnectVariables()
        {
            _isConnected = true;
            _eventAggregator.GetEvent<VariablesConnectedEvent>().Publish(true);
            _eventAggregator.GetEvent<RaySourceStatusChangedEvent>().Publish(RaySourceStatus.Closed);
            _logger.Info("[Simulated] PVI 变量连接成功");
            return XRayResult.Ok();
        }

        /// <summary>
        /// 开启射线
        /// </summary>
        public override XRayResult TurnOn()
        {
            _isOn = true;
            _eventAggregator.GetEvent<RaySourceStatusChangedEvent>().Publish(RaySourceStatus.Opened);
            _logger.Info("[Simulated] 射线源已开启");
            return XRayResult.Ok();
        }

        /// <summary>
        /// 关闭射线
        /// </summary>
        public override XRayResult TurnOff()
        {
            _isOn = false;
            _eventAggregator.GetEvent<RaySourceStatusChangedEvent>().Publish(RaySourceStatus.Closed);
            _logger.Info("[Simulated] 射线源已关闭");
            return XRayResult.Ok();
        }

        /// <summary>
        /// 设置电压（kV）
        /// </summary>
        public override XRayResult SetVoltage(float voltage)
        {
            _setVoltage = voltage;
            _logger.Info("[Simulated] 设置电压: {Voltage} kV", voltage);
            return XRayResult.Ok();
        }

        /// <summary>
        /// 设置电流（μA）
        /// </summary>
        public override XRayResult SetCurrent(float current)
        {
            _setCurrent = current;
            _logger.Info("[Simulated] 设置电流: {Current} μA", current);
            return XRayResult.Ok();
        }

        /// <summary>
        /// 设置焦点
        /// </summary>
        public override XRayResult SetFocus(float focus)
        {
            _setFocus = focus;
            return XRayResult.Ok();
        }

        /// <summary>
        /// 读取实际电压值（模拟 ±2% 波动）
        /// </summary>
        public override XRayResult ReadVoltage()
        {
            float noise = (float)(_random.NextDouble() * 0.04 - 0.02); // -0.02 to +0.02
            float simulatedVoltage = _setVoltage * (1 + noise);
            return XRayResult.Ok(simulatedVoltage);
        }

        /// <summary>
        /// 读取实际电流值（模拟 ±2% 波动）
        /// </summary>
        public override XRayResult ReadCurrent()
        {
            float noise = (float)(_random.NextDouble() * 0.04 - 0.02); // -0.02 to +0.02
            float simulatedCurrent = _setCurrent * (1 + noise);
            return XRayResult.Ok(simulatedCurrent);
        }

        /// <summary>
        /// 读取系统状态
        /// </summary>
        public override XRayResult ReadSystemStatus()
        {
            return XRayResult.Ok();
        }

        /// <summary>
        /// 检查错误状态
        /// </summary>
        public override XRayResult CheckErrors()
        {
            return XRayResult.Ok();
        }

        /// <summary>
        /// TXI 开启
        /// </summary>
        public override XRayResult TxiOn()
        {
            _logger.Info("[Simulated] TXI 已开启");
            return XRayResult.Ok();
        }

        /// <summary>
        /// TXI 关闭
        /// </summary>
        public override XRayResult TxiOff()
        {
            _logger.Info("[Simulated] TXI 已关闭");
            return XRayResult.Ok();
        }

        /// <summary>
        /// 暖机设置
        /// </summary>
        public override XRayResult WarmUp()
        {
            _logger.Info("[Simulated] 暖机完成");
            return XRayResult.Ok();
        }

        /// <summary>
        /// 训机设置
        /// </summary>
        public override XRayResult Training()
        {
            _logger.Info("[Simulated] 训机完成");
            return XRayResult.Ok();
        }

        /// <summary>
        /// 灯丝校准
        /// </summary>
        public override XRayResult FilamentCalibration()
        {
            _logger.Info("[Simulated] 灯丝校准完成");
            return XRayResult.Ok();
        }

        /// <summary>
        /// 全部电压自动定心
        /// </summary>
        public override XRayResult AutoCenter()
        {
            _logger.Info("[Simulated] 自动定心完成");
            return XRayResult.Ok();
        }

        /// <summary>
        /// 设置功率模式
        /// </summary>
        public override XRayResult SetPowerMode(int mode)
        {
            _logger.Info("[Simulated] 设置功率模式: {Mode}", mode);
            return XRayResult.Ok();
        }

        /// <summary>
        /// 完全关闭设备，重置所有状态
        /// </summary>
        public override XRayResult CloseOff()
        {
            _isOn = false;
            _isConnected = false;
            _isInitialized = false;
            _logger.Info("[Simulated] 射线源已完全关闭");
            return XRayResult.Ok();
        }

        #endregion
    }
}