using System;
using System.Collections;
using System.Collections.Generic;
using UnityEngine;

public class SoldierStateAttack : BaseState<SoldierUnit>
{
    private TimerUnit mAttackTimer = null;
    private TimerUnit mActiveTimer = null;

    private float mAtkAniLength = 1;

    public override void EnterState(Type pLastState)
    {
        base.EnterState(pLastState);

        if (mAttackTimer == null)
        {
            mAttackTimer = TimerManager.Instance.CreateTimerUnit();
        }

        if (mActiveTimer == null)
        {
            mActiveTimer = TimerManager.Instance.CreateTimerUnit();
        }

        mAtkAniLength = Utils.GetAtkAniLength(mMaster.BType, mMaster.Level);

        AttackOnce();
    }

    public override void ExecuteState(float pDeltaTime)
    {
        base.ExecuteState(pDeltaTime);
    }

    public override void ExitState(Type pNextState)
    {
        base.ExitState(pNextState);

        mAttackTimer.CancelTimer();
        mActiveTimer.CancelTimer();
    }

    private void AttackOnce()
    {
        ClearDead();

        if (mMaster.HasAttackableTarget)
        {
            mMaster.LookToTarget(mMaster.AttackTarget[0].RelativePos(mMaster.RelativePos()));
            mMaster.SetACTrigger(SoldierACTrigger.TriggerAttack, Mathf.Max(mAtkAniLength / mMaster.AtkInterval, mAtkAniLength));

            mActiveTimer.StartTimer(ActiveOnce, Mathf.Min(mAtkAniLength * 0.6f, mMaster.AtkInterval * 0.6f));
            mAttackTimer.StartTimer(AttackOnce, Mathf.Min(mAtkAniLength, mMaster.AtkInterval));
        }
        else
        {
            ChangeState(typeof(SoldierStateIdle));
        }
    }

    private void ClearDead()
    {
        if (mMaster.AttackTarget.Count <= 0)
            return;

        List<WarUnit> tRemoveList = new List<WarUnit>();
        WarUnit tTarget = null;
        for (int i = 0; i < mMaster.AttackTarget.Count; i++)
        {
            tTarget = mMaster.AttackTarget[i];
            if (tTarget.IsDead)
            {
                tRemoveList.Add(tTarget);
            }
        }

        for (int i = 0; i < tRemoveList.Count; i++)
        {
            if (mMaster.AttackTarget.Contains(tRemoveList[i]))
                mMaster.AttackTarget.Remove(tRemoveList[i]);
        }
    }

    private void ActiveOnce()
    {
        if (mMaster.HasAttackableTarget)
        {
            List<WarUnit> tRemoveList = new List<WarUnit>();
            WarUnit tTarget = null;
            for (int i = 0; i < mMaster.AttackTarget.Count; i++)
            {
                if (mMaster.AtkArea == 0 && i > 0)
                    break;

                tTarget = mMaster.AttackTarget[i];
                if (!tTarget.IsDead)
                {
                    tTarget.Hurt(Utils.CountDamage(mMaster.Level, tTarget.Level ,mMaster.Damage));
                }
                else
                {
                    tRemoveList.Add(tTarget);
                }
            }

            for (int i = 0; i < tRemoveList.Count; i++)
            {
                if(mMaster.AttackTarget.Contains(tRemoveList[i]))
                    mMaster.AttackTarget.Remove(tRemoveList[i]);
            }

            GameObject tAtkFx = ResourceManager.Instance.LoadRes<GameObject>(Const.Path.GetAtkFx(mMaster.BType, mMaster.Level));
            if (tAtkFx != null)
            {
                Transform tFxTrans = mMaster.AtkTrans ? mMaster.AtkTrans : mMaster.transform;
                GameObject.Instantiate(tAtkFx, tFxTrans.position, tFxTrans.rotation);
            }

            AudioClip tAC = ResourceManager.Instance.LoadRes<AudioClip>(Const.Path.GetAtkSound(mMaster.BType, mMaster.Level));
            AudioManager.Instance.PlaySound(tAC, 0.6f);
        }
    }
}