using System;
using System.Threading.Tasks;
using ThreatSource.Simulation;
using ThreatSource.Data;
using ThreatSource.Missile;

namespace ThreatSource.Examples
{
    /// <summary>
    /// 红外成像制导导弹仿真示例
    /// 本示例展示了如何：
    /// 1. 创建和配置一个红外成像制导导弹
    /// 2. 设置仿真环境和参数
    /// 3. 运行仿真并获取结果
    /// </summary>
    public class IRMissileSimulationExample
    {
        private ISimulationManager _simulationManager;
        private ThreatSourceDataManager _dataManager;

        public IRMissileSimulationExample()
        {
            _simulationManager = new SimulationManager();
            _dataManager = new ThreatSourceDataManager();
        }

        /// <summary>
        /// 运行红外成像制导导弹仿真示例
        /// </summary>
        public async Task RunSimulationExample()
        {
            try
            {
                // 步骤1：初始化仿真管理器
                _simulationManager.StartSimulation(0.02); // 20ms时间步长

                // 步骤2：创建目标实体
                var target = new BaseEquipment("target_001")
                {
                    KState = new KinematicState
                    {
                        Position = new Vector3(5000, 0, 1000), // 5km距离，1km高度
                        Velocity = new Vector3(-50, 0, 0),     // 50m/s向西移动
                        Orientation = new Orientation(0, 0, 0)
                    }
                };

                // 步骤3：从配置创建红外成像制导导弹
                var missileData = _dataManager.GetMissile("IR_Missile_Example");
                var missile = new InfraredImagingTerminalGuidanceMissile("missile_001", missileData)
                {
                    KState = new KinematicState
                    {
                        Position = new Vector3(0, 0, 100),     // 起始位置
                        Velocity = new Vector3(200, 0, 0),     // 初始速度200m/s
                        Orientation = new Orientation(0, 0, 0) // 初始朝向
                    }
                };

                // 步骤4：注册实体到仿真管理器
                _simulationManager.RegisterEntity(target);
                _simulationManager.RegisterEntity(missile);

                // 步骤5：订阅仿真事件
                _simulationManager.Subscribe<MissileExplodeEvent>(OnMissileExplode);
                _simulationManager.Subscribe<FlightPhaseChangeEvent>(OnFlightPhaseChange);

                // 步骤6：运行仿真循环
                double simulationTime = 0;
                double maxTime = 60.0; // 最大仿真时间60秒

                Console.WriteLine("开始红外成像制导导弹仿真...");
                Console.WriteLine($"目标位置: {target.KState.Position}");
                Console.WriteLine($"导弹初始位置: {missile.KState.Position}");

                while (simulationTime < maxTime && missile.IsActive)
                {
                    // 更新仿真
                    _simulationManager.UpdateSimulation();
                    simulationTime = _simulationManager.CurrentTime;

                    // 每秒输出一次状态
                    if (simulationTime % 1.0 < 0.02)
                    {
                        var distance = Vector3.Distance(missile.KState.Position, target.KState.Position);
                        Console.WriteLine($"时间: {simulationTime:F1}s, 距离目标: {distance:F1}m, 导弹阶段: {missile.FlightPhase}");
                    }

                    await Task.Delay(1); // 避免阻塞
                }

                // 步骤7：输出仿真结果
                var finalDistance = Vector3.Distance(missile.KState.Position, target.KState.Position);
                Console.WriteLine($"仿真结束 - 最终距离: {finalDistance:F2}m");

                if (finalDistance < 10.0)
                {
                    Console.WriteLine("导弹成功命中目标！");
                }
                else
                {
                    Console.WriteLine("导弹未能命中目标。");
                }
            }
            catch (Exception ex)
            {
                Console.WriteLine($"仿真过程出错: {ex.Message}");
            }
            finally
            {
                // 清理资源
                _simulationManager.StopSimulation();
            }
        }

        /// <summary>
        /// 处理导弹爆炸事件
        /// </summary>
        private void OnMissileExplode(MissileExplodeEvent evt)
        {
            Console.WriteLine($"导弹 {evt.SenderId} 在位置 {evt.Position} 爆炸");
        }

        /// <summary>
        /// 处理飞行阶段变化事件
        /// </summary>
        private void OnFlightPhaseChange(FlightPhaseChangeEvent evt)
        {
            Console.WriteLine($"导弹 {evt.SenderId} 进入 {evt.NewPhase} 阶段");
        }
    }

    /// <summary>
    /// 示例程序入口点
    /// </summary>
    public class Program
    {
        public static async Task Main(string[] args)
        {
            var example = new IRMissileSimulationExample();
            await example.RunSimulationExample();
            
            Console.WriteLine("按任意键退出...");
            Console.ReadKey();
        }
    }
}