using DG.Tweening;
using IVDataFormat;
using Spine.Unity;
using System.Collections;
using UnityEngine;
using Vector3 = UnityEngine.Vector3;

// 전투용 몬스터.
public class IVMonster : CreatureBase
{
    private static readonly Color CLR_DamNormal = new Color(1f, 1f, 1f);
    private static readonly Color CLR_DamCritical = new Color(1f, 56f / 255f, 0f);
    private static readonly float F_DamNormal = 24f;
    private static readonly float F_DamCritical = 32f;

    [SerializeField, AutoInjector("/ptcDie")] private ParticleSystem ptcDieEffect;
    [SerializeField, AutoInjector("/hit2")] private ParticleSystem ptcHit2;
    [SerializeField, AutoInjector("/hit3")] private ParticleSystem ptcHit3;

    [SerializeField] Transform damageIndicatorPos;

    protected override void Start()
    {
        base.Start();
        bFriendly = false;
    }

    // 몬스터 애니메이션 세팅.
    public void SetMonsterAni(SkeletonDataAsset skdata)
    {
        if (skdata == null || (skAnim.skeletonDataAsset != null && skdata.name.Equals(skAnim.skeletonDataAsset.name)))
        {
            bLoading = false;
            if (bSummonNeed)
            {
                bSummonNeed = false;
                Summon();
            }
            return;
        }

        if (skAnim.skeletonDataAsset != null)
            skAnim.skeletonDataAsset.Clear();
        skAnim.ClearState();

        skAnim.skeletonDataAsset = skdata;
        skAnim.updateWhenInvisible = UpdateMode.EverythingExceptMesh;
        skAnim.Initialize(true);
        ChangeStateForce(eState.idle);
        bInitNeed = true;
        bLoading = false;

        if (bSummonNeed)
        {
            bSummonNeed = false;
            Summon();
        }

        skAnim.gameObject.SetActive(true);
    }

    // 사망시.
    protected override void OnDie()
    {
        base.OnDie();
        ptcHit2.Stop();
        ptcHit3.Stop();
        StartCoroutine(fadeOut());
        PushFrameForce(10f);
        alertPlayer = false;
        battleMgr.DieEnemy(creatureClass, iIndex);
    }

    protected void KnockBack()
    {
        int ifront = 1;
        float pushPower = 10f;
        if (IsLookRight)
            ifront = -1;
        transform.DOMoveX(transform.position.x + (ifront * pushPower), 0.3f);
    }

    private IEnumerator fadeOut()
    {
        Spine.Skeleton sk = skAnim.skeleton;
        yield return new WaitForSeconds(0.6f);
        if (eType != eMonsterType.SmallObject)
        {
            ptcDieEffect.Play();
        }

        while (sk.A > 0)
        {
            sk.A -= 0.05f;
            yield return new WaitForSeconds(0.05f);
        }
        yield return null;
    }

    protected override void MoveToTarget()
    {
        if (!bCoward && moveSpeed <= 0f || target is null) return;

        Vector3 newPos;
        Vector2 to = (targetPos - (Vector2)transform.position).normalized;

        if (!alertPlayer)
            newPos = transform.position + (Vector3)to * moveSpeed * enemySlowSpeed * Time.deltaTime;
        else
            newPos = transform.position + (Vector3)to * moveSpeed * Time.deltaTime;

        if (bCoward)
        {
            if (newPos.x < -25)
                newPos.x = -25;
            else if (newPos.x > 25)
                newPos.x = 25;

            if (newPos.y < -25)
                newPos.y = -25;
            else if (newPos.y > 25)
                newPos.y = 25;
        }
        newPos.z = newPos.y * 0.1f;

        transform.position = newPos;
        ChangeLookDirection(targetTransform);
    }

    protected override void OnDamaged(Damage damage)
    {
        var indicator = battleMgr.GetDamageIndicatorText(false);
        if (indicator != null)
        {
            if (damage.isCritical)
                indicator.SetText(FormatString.BigIntString1(damage.value), F_DamCritical, CLR_DamCritical);
            else
                indicator.SetText(FormatString.BigIntString1(damage.value), F_DamNormal, CLR_DamNormal);

            indicator.Show(damageIndicatorPos.position);
        }

        if (eType == eMonsterType.SmalllMonster || eType == eMonsterType.MediumMonster || eType == eMonsterType.BigMonster)
        {
            ptcHit2.Play();
            if(!ptcHit3.isPlaying)
                ptcHit3.Play();
        }
    }

    // 타겟 위치 찾기.
    protected override void SearchTarget()
    {
        if (!IsBattleAvail())
        {
            if (battleMgr.BattlePause)
                ChangeState(eState.idle);

            return;
        }

        fSearchTick = 0f;
        target = battleMgr.GetPlayer();
        attackRange = 3f;

        if (sqrtDistToTarget <= attackRange * attackRange && maxAtk != 0)
        {
            CheckAttack();
        }
        else if(sqrtDistToTarget <= recogRange * recogRange)
        {
            alertPlayer = true;
            ChangeState(eState.move);
        }
        else
        {
            ChangeState(eState.move);
        }
    }

    #region Ani Event
    public override void AttackDamage()
    {
        if (BattleMgr.Instance.BattlePause || bSummon || bDead) return;
        battleMgr.SendDamage(target, currentAtk, fCrtDamCalc, iCrtRateCalc);
    }
    #endregion Ani Event
}