using ActiveProtect.SimulationEnvironment;
using System;

namespace ActiveProtect.Models
{
    /// <summary>
    /// 激光指示器类，用于对目标进行激光照射
    /// </summary>
    public class LaserDesignator : SimulationElement
    {
        /// <summary>
        /// 目标ID
        /// </summary>
        public string TargetId { get; private set; }

        /// <summary>
        /// 导弹ID
        /// </summary>
        public string MissileId { get; private set; }

        /// <summary>
        /// 干扰阈值（分贝）
        /// </summary>
        public double JammingThreshold { get; private set; } = 0.0;

        /// <summary>
        /// 是否被干扰
        /// </summary>
        public bool IsJammed { get; private set; } = false;

        /// <summary>
        /// 最大照射范围（米）
        /// </summary>
        public double MaxIlluminationRange { get; private set; }

        /// <summary>
        /// 是否正在照射
        /// </summary>
        private bool IsIlluminating { get; set; } = false;

        /// <summary>
        /// 构造函数
        /// </summary>
        /// <param name="id">激光指示器ID</param>
        /// <param name="targetId">目标ID</param>
        /// <param name="missileId">导弹ID</param>
        /// <param name="config">激光指示器配置</param>
        /// <param name="simulationManager">仿真管理器</param>
        public LaserDesignator(string id, string targetId, string missileId, LaserDesignatorConfig config, ISimulationManager simulationManager)
            : base(id, config.InitialPosition, new Orientation(), simulationManager)
        {
            TargetId = targetId;
            MissileId = missileId;
            IsActive = true;
            MaxIlluminationRange = config.MaxIlluminationRange;
            SimulationManager.SubscribeToEvent<LaserJammingEvent>(OnLaserJamming);
            SimulationManager.SubscribeToEvent<EntityDeactivatedEvent>(OnEntityDeactivatedEvent);
        }

        /// <summary>
        /// 更新激光指示器状态
        /// </summary>
        /// <param name="deltaTime">时间步长</param>
        public override void Update(double deltaTime)
        {
            if (IsActive && !IsJammed)
            {
                UpdateIllumination();
            }
            else if (IsIlluminating)
            {
                StopIllumination();
            }
        }

        /// <summary>
        /// 更新照射状态
        /// </summary>
        private void UpdateIllumination()
        {
            if (SimulationManager.GetEntityById(TargetId) is ILaserIlluminatable target)
            {
                double distanceToTarget = Vector3D.Distance(Position, target.Position);
                bool shouldIlluminate = distanceToTarget <= MaxIlluminationRange;

                Console.WriteLine($"激光目标指示器 {Id} 状态更新:");
                Console.WriteLine($"  目标: {TargetId}");
                Console.WriteLine($"  距离目标: {distanceToTarget:F2} m (最大照射范围: {MaxIlluminationRange} m)");
                Console.WriteLine($"  是否应该照射: {shouldIlluminate}");
                Console.WriteLine($"  当前照射状态: {IsIlluminating}");

                if (shouldIlluminate && !IsIlluminating)
                {
                    StartIllumination(target);
                }
                else if (!shouldIlluminate && IsIlluminating)
                {
                    StopIllumination();
                }
            }
            else
            {
                Console.WriteLine($"激光目标指示器 {Id} 无法找到目标 {TargetId}");
                if (IsIlluminating)
                {
                    StopIllumination();
                }
            }
        }

        /// <summary>
        /// 开始照射目标
        /// </summary>
        /// <param name="target">目标</param>
        private void StartIllumination(ILaserIlluminatable target)
        {
            target.Illuminate();
            IsIlluminating = true;
            Console.WriteLine($"激光目标指示器 {Id} 开始照射目标 {TargetId}");
            PublishIlluminationEvent();
        }

        /// <summary>
        /// 停止照射目标
        /// </summary>
        private void StopIllumination()
        {
            if (SimulationManager.GetEntityById(TargetId) is ILaserIlluminatable target)
            {
                target.StopIllumination();
            }
            IsIlluminating = false;
            Console.WriteLine($"激光目标指示器 {Id} 停止照射目标 {TargetId}");
            PublishIlluminationStopEvent();
        }

        /// <summary>
        /// 处理激光干扰事件
        /// </summary>
        /// <param name="evt">激光干扰事件</param>
        private void OnLaserJamming(LaserJammingEvent evt)
        {
            if (evt.TargetId == TargetId)
            {
                var tank = SimulationManager.GetEntityById(TargetId) as Tank;
                if (tank != null)
                {
                    double distanceToTarget = Vector3D.Distance(Position, tank.Position);
                    double jammingEffectiveness = 20 * Math.Log10(evt.JammingPower) - 20 * Math.Log10(distanceToTarget) - 20 * Math.Log10(4 * Math.PI);

                    Console.WriteLine($"激光目标指示器 {Id} 收到干扰事件，干扰功率: {evt.JammingPower:F2}, 距离: {distanceToTarget:F2}, 干扰效果: {jammingEffectiveness:F2} dB, 阈值: {JammingThreshold:F2} dB");

                    if (jammingEffectiveness > JammingThreshold)
                    {
                        if (!IsJammed)
                        {
                            Console.WriteLine($"激光目标指示器 {Id} 被干扰，停止工作");
                            IsJammed = true;
                            StopIllumination();
                        }
                    }
                    else
                    {
                        if (IsJammed)
                        {
                            Console.WriteLine($"激光目标指示器 {Id} 干扰解除，恢复工作");
                            IsJammed = false;
                        }
                    }
                }
            }
        }

        /// <summary>
        /// 激活激光指示器
        /// </summary>
        public override void Activate()
        {
            if (!IsActive)
            {
                IsActive = true;
                IsJammed = false;
                Console.WriteLine($"激光目标指示器 {Id} 已激活");
                UpdateIllumination();
            }
            base.Activate();
        }

        /// <summary>
        /// 停用激光指示器
        /// </summary>
        public override void Deactivate()
        {
            if (IsActive)
            {
                IsActive = false;
                StopIllumination();
                Console.WriteLine($"激光目标指示器 {Id} 已停用");
            }
            base.Deactivate();
        }

        /// <summary>
        /// 发布激光照射事件
        /// </summary>
        private void PublishIlluminationEvent()
        {
            var evt = new LaserIlluminationEvent
            {
                TargetId = TargetId,
                SenderId = Id
            };
            PublishEvent(evt);
            Console.WriteLine($"激光指示器 {Id} 发布激光照射事件, 目标ID: {TargetId}");
        }

        /// <summary>
        /// 发布激光照射停止事件
        /// </summary>
        private void PublishIlluminationStopEvent()
        {
            var evt = new LaserIlluminationStopEvent
            {
                TargetId = TargetId,
                SenderId = Id
            };
            PublishEvent(evt);
            Console.WriteLine($"激光指示器 {Id} 发布激光照射停止事件, 目标ID: {TargetId}");
        }

        /// <summary>
        /// 处理实体停用事件
        /// </summary>
        /// <param name="evt">实体停用事件</param>
        private void OnEntityDeactivatedEvent(EntityDeactivatedEvent evt)
        {
            if (evt.DeactivatedEntityId == TargetId || evt.DeactivatedEntityId == MissileId)
            {
                Deactivate();
            }
        }

        /// <summary>
        /// 获取激光指示器状态信息
        /// </summary>
        /// <returns>状态信息字符串</returns>
        public override string GetStatus()
        {
            return $"激光目标指示器 {Id}:\n" +
                   $"  位置: {Position}\n" +
                   $"  目标: {TargetId}\n" +
                   $"  导弹: {MissileId}\n" +
                   $"  激活状态: {(IsActive ? "激活" : "未激活")}\n" +
                   $"  照射状态: {(IsIlluminating ? "正在照射" : "未照射")}\n" +
                   $"  干扰状态: {(IsJammed ? "被干扰" : "正常")}\n" +
                   $"  最大照射范围: {MaxIlluminationRange}";
        }
    }
}