using ShotSimulator.Screen;
using ShotSimulator.Target;
using ShotSimulator.Tool;
using ShotSimulator.Train.Info;
using System;
using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using Random = UnityEngine.Random;

namespace ShotSimulator.Train
{
    public class GridShotTrainHandle : BaseTrainHandle
    {
        private int maxTargetNum = 3;

        private GridShotTrainDifficultyData m_DifficultyData;
        private GridShotTrainScoreData m_ScoreData;

        private List<TimeTask> generateTargetTimeTasks = new List<TimeTask>();

        private double m_TotalHitNum;
        private double TotalHitNum
        {
            get { return m_TotalHitNum; }
            set
            {
                m_TotalHitNum = value;
                UpdatePrecision();
            }
        }
        private double m_MissHitNum;
        private double MissHitNum
        {
            get { return m_MissHitNum; }
            set
            {
                m_MissHitNum = value;
                UpdatePrecision();
            }
        }
        private double totalTargetNum;

        private List<SphereShotTarget> curTargets = new List<SphereShotTarget>();

        public GridShotTrainHandle(BaseTrainCallBack callBack, BaseTrainInfo info, DifficultyType difficultyType) : base(callBack, info, difficultyType)
        {
            SetShotTargetInteractiveEvent(ShotTargetInteractiveType.OnClick, OnShottedTargetEvent);

            m_DifficultyData = info.GetDifficultyData<GridShotTrainDifficultyData>(m_DifficultyType);
            m_ScoreData = info.GetScoreData<GridShotTrainScoreData>(m_DifficultyType);
        }

        #region Train
        protected override void ResetTrain()
        {
            ResetTarget();

            for(int i = 0; i < generateTargetTimeTasks.Count; i++)
            {
                TimerSystem.GetInstance().RemoveTimeTask(generateTargetTimeTasks[i]);
            }
            generateTargetTimeTasks.Clear();

            m_TotalHitNum = 0;
            totalTargetNum = 0;
            m_MissHitNum = 0;
        }
        public override void StartTrain()
        {
            base.StartTrain();
            ResetTrain();
            InitShotTargets();
            StartBestHitTimer();
        }

        public override void PauseTrain()
        {
            base.PauseTrain();

            foreach(var timer in generateTargetTimeTasks)
            {
                timer.pause = true;
            }
        }

        public override void ContinueTrain()
        {
            base.ContinueTrain();

            foreach (var timer in generateTargetTimeTasks)
            {
                timer.pause = false;
            }
        }

        public override void CalculateTrainResult()
        {
            SetResultMetricsDataValue(MetricsType.TimeToKill, Math.Round(TrainInfo.duration / TotalHitNum, 2));
            SetResultMetricsDataValue(MetricsType.Kill_Sec, Math.Round(TotalHitNum / TrainInfo.duration, 2));
            SetResultMetricsDataValue(MetricsType.Target, totalTargetNum);
            SetResultMetricsDataValue(MetricsType.KillTotal, TotalHitNum);
        }
        #endregion

        #region TrainResult
        private void UpdatePrecision()
        {
            double totalShot = TotalHitNum + MissHitNum;
            double precision = 0;
            if (totalShot != 0)
            {
                precision = Math.Round(TotalHitNum / totalShot, 2);
            }
            SetResultMetricsDataValue(MetricsType.Precision, precision);
        }
        #endregion
        #region ShootTarget
        private void OnShottedTargetEvent(BaseShotTarget target)
        {
            if (target != null)
            {
                int comboS = Mathf.CeilToInt(m_ScoreData.baseScore * comboNums * m_ScoreData.comboMul);
                int bestS = m_IsBestHit ? Mathf.CeilToInt(m_ScoreData.baseScore * m_ScoreData.bestHitMul) : 0;
                IncreaseScore(m_ScoreData.baseScore + comboS + bestS);
                comboNums++;

                TotalHitNum++;
                DestroyShootTarget(target as SphereShotTarget);
                generateTargetTimeTasks.Add(TimerSystem.GetInstance().AddTimeTask(GenerateShotTarget, 0.5f));

                StartBestHitTimer();
            }
            else
            {
                MissHitNum++;

                comboNums = 0;
                int missPunitiveS = Mathf.CeilToInt(m_ScoreData.baseScore * m_ScoreData.missPunitiveMul);
                IncreaseScore(missPunitiveS * -1);
            }
        }
        #endregion
        private void InitShotTargets()
        {
            for (int i = 0; i < maxTargetNum; i++)
            {
                GenerateShotTarget();
            }
        }

        private void GenerateShotTarget()
        {
            GameObject obj = GameObject.Instantiate<GameObject>(Resources.Load<GameObject>("Prefabs/SphereTarget"));
            SphereShotTarget target = obj.GetComponent<SphereShotTarget>();
            target.IsRunning = true;
            target.onClickCanChangeColor = false;
            target.onHoveringCanChangeColor = false;
            target.defaultColor = ScreenEffectManager.GetInstance().GetTargetColor();
            target.Init(1, ReduceHealthTriggerType.OnClick, false, ReduceHealthType.Per, MotionType.None, RandomPosition());
            curTargets.Add(target);
            totalTargetNum++;
        }

        private Vector3 RandomPosition()
        {
            List<Vector3> positions = curTargets.GetGameObjectWorldPosition<SphereShotTarget>();
            Vector2 widthLimt = Vector2.zero;
            Vector2 heightLimt = Vector2.zero;
            switch (m_DifficultyType)
            {
                case DifficultyType.Standard:
                    widthLimt = new Vector2(-4, 4);
                    heightLimt = new Vector2(-1.5f, 1.5f);
                    break;
                case DifficultyType.Advance:
                    widthLimt = new Vector2(-8, 8);
                    heightLimt = new Vector2(-1.5f, 3.5f);
                    break;
                case DifficultyType.Professional:
                    widthLimt = new Vector2(-8, 8);
                    heightLimt = new Vector2(-1.5f, 5f);
                    break;
            }
            Vector3 min = ExtraTool.GetScreenOffsetPosition(ExtraTool.Sphere_Diameter1_ScreenLeftBottomOffset, m_DifficultyData.targetDistance, widthLimt, heightLimt);
            Vector3 max = ExtraTool.GetScreenOffsetPosition(ExtraTool.Sphere_Diameter1_ScreenRightTopOffset, m_DifficultyData.targetDistance, widthLimt, heightLimt);
            if (ExtraTool.TryGetNonOverlapRamdonPos(positions, min, max, 2, out Vector3 ramdonPos, true))
            {
                return ramdonPos;
            }
            else
            {
                return new Vector3(0, 0, 25f);
            }
        }

        private void DestroyShootTarget(SphereShotTarget target)
        {
            if (target != null)
            {
                curTargets.Remove(target);
                target.IsRunning = false;
                GameObject.Destroy(target.gameObject);
            }
        }

        private void ResetTarget()
        {
            for (int i = 0; i < curTargets.Count; i++)
            {
                curTargets[i].IsRunning = false;
                GameObject.Destroy(curTargets[i].gameObject);
            }
            curTargets.Clear();
        }
    }
}