using ActiveProtect.SimulationEnvironment;
using System;

namespace ActiveProtect.Models
{
    /// <summary>
    /// 激光告警器类，用于检测激光照射并发出警报
    /// </summary>
    public class LaserWarner : SimulationElement
    {
        /// <summary>
        /// 是否正在发出警报
        /// </summary>
        public bool IsAlarming { get; private set; }

        /// <summary>
        /// 警报持续时间（秒）
        /// </summary>
        private readonly double alarmDuration;

        /// <summary>
        /// 当前警报计时器
        /// </summary>
        private double alarmTimer = 0;

        /// <summary>
        /// 被监视实体的ID
        /// </summary>
        public string MonitoredEntityId { get; private set; }

        /// <summary>
        /// 构造函数
        /// </summary>
        /// <param name="id">激光告警器ID</param>
        /// <param name="position">初始位置</param>
        /// <param name="orientation">初始朝向</param>
        /// <param name="simulationManager">仿真管理器</param>
        /// <param name="monitoredEntityId">被监视实体的ID</param>
        /// <param name="config">激光告警器配置</param>
        public LaserWarner(string id, Vector3D position, Orientation orientation, ISimulationManager simulationManager, string monitoredEntityId, LaserWarnerConfig config)
            : base(id, position, orientation, 0, simulationManager)
        {
            MonitoredEntityId = monitoredEntityId;
            IsAlarming = false;
            alarmDuration = config.AlarmDuration;
            SimulationManager.SubscribeToEvent<LaserIlluminationStartEvent>(OnLaserIlluminationStart);
            SimulationManager.SubscribeToEvent<LaserIlluminationStopEvent>(OnLaserIlluminationStop);
        }

        /// <summary>
        /// 更新激光告警器状态
        /// </summary>
        /// <param name="deltaTime">时间步长</param>
        public override void Update(double deltaTime)
        {
            if (!IsActive) return;

            var tank = SimulationManager.GetEntityById(MonitoredEntityId) as Tank;
            if (tank != null)
            {
                Position = tank.Position;
                Orientation = tank.Orientation;
            }

            if (IsAlarming)
            {
                alarmTimer += deltaTime;
                if (alarmTimer >= alarmDuration)
                {
                    StopAlarm();
                }
            }
        }

        /// <summary>
        /// 处理激光照射事件
        /// </summary>
        /// <param name="evt">激光照射事件</param>
        private void OnLaserIlluminationStart(LaserIlluminationStartEvent evt)
        {
            if (evt?.Target != null && evt.Target.Id == MonitoredEntityId)
            {
                TriggerAlarm();
            }
        }

        /// <summary>
        /// 处理激光照射停止事件
        /// </summary>
        /// <param name="evt">激光照射停止事件</param>
        private void OnLaserIlluminationStop(LaserIlluminationStopEvent evt)
        {
            if (evt?.Target != null && evt.Target.Id == MonitoredEntityId)
            {
                StopAlarm();
            }
        }

        /// <summary>
        /// 触发警报
        /// </summary>
        public void TriggerAlarm()
        {
            if (!IsAlarming)
            {
                IsAlarming = true;
                alarmTimer = 0;
                PublishEvent(new LaserWarnerAlarmEvent() { TargetId = MonitoredEntityId });
                Console.WriteLine($"激光告警器 {Id} 发出警报!");
            }
        }

        /// <summary>
        /// 停止警报
        /// </summary>
        public void StopAlarm()
        {
            if (IsAlarming)
            {
                IsAlarming = false;
                alarmTimer = 0;
                PublishEvent(new LaserWarnerAlarmStopEvent() { TargetId = MonitoredEntityId });
                Console.WriteLine($"激光告警器 {Id} 停止警报");
            }
        }

        /// <summary>
        /// 获取激光告警器状态信息
        /// </summary>
        /// <returns>状态信息字符串</returns>
        public override string GetStatus()
        {
            return $"激光告警器 {Id}:\n" +
                   $"  监视实体: {MonitoredEntityId}\n" +
                   $"  警报状态: {(IsAlarming ? "警报中" : "正常")}\n" +
                   $"  警报持续时间: {(IsAlarming ? alarmTimer : 0):F2}/{alarmDuration:F2}";
        }

        /// <summary>
        /// 激活激光告警器
        /// </summary>
        public override void Activate()
        {
            base.Activate();
            SimulationManager.SubscribeToEvent<LaserIlluminationStartEvent>(OnLaserIlluminationStart);
            SimulationManager.SubscribeToEvent<LaserIlluminationStopEvent>(OnLaserIlluminationStop);
        }

        /// <summary>
        /// 停用激光告警器
        /// </summary>
        public override void Deactivate()
        {
            base.Deactivate();
            SimulationManager.UnsubscribeFromEvent<LaserIlluminationStartEvent>(OnLaserIlluminationStart);
            SimulationManager.UnsubscribeFromEvent<LaserIlluminationStopEvent>(OnLaserIlluminationStop);
        }
    }
}