using System.Collections.Generic;
using UnityEngine;

public class UnitCtrl : MonoBehaviour
{
    public UnitInfo unit;
    public Animator anim;
    public GameObject defensObj;
    bool isHomeAttack;

    List<UnitCtrl> enemyUnits;

    public bool isEnemy;

    float delay;

    private void Awake()
    {
        enemyUnits = new List<UnitCtrl>();
        isHomeAttack = false;
        delay = 0;
    }
    private void Start()
    {
        if(isEnemy)
            defensObj.tag = "enemy";
        else
            defensObj.tag = "player";
    }
    private void Update()
    {
        delay -= Time.deltaTime;
        if (delay > 0)
            return;
        if (enemyUnits.Count != 0 || isHomeAttack)
        {
            if (enemyUnits.Count == 0)
            {
                anim.SetTrigger("att");
                Debug.Log("캠프 공격");
                delay = unit.attackSpeed;
            }
            else
            {
                if (enemyUnits[0] != null)
                {
                    anim.SetTrigger("att");
                    enemyUnits[0].Attack(unit.attack);
                    delay = unit.attackSpeed;
                }
                else
                {
                    enemyUnits.RemoveAt(0);
                }
            }
        }
        else
        {
            transform.position += Vector3.left * unit.moveSpeed * Time.deltaTime * (isEnemy ? 1 : -1);
        }
 
    }
    private void OnTriggerEnter2D(Collider2D collision)
    {
        if (isEnemy)
        {
            if (collision.gameObject.CompareTag("player"))
            {
                enemyUnits.Add(collision.gameObject.GetComponentInParent<UnitCtrl>());
            }
            if (collision.gameObject.CompareTag("player_home"))
            {
                isHomeAttack = true;
            }
        }
        else
        {
            if (collision.gameObject.CompareTag("enemy"))
            {
                enemyUnits.Add(collision.gameObject.GetComponentInParent<UnitCtrl>());
            }
            if (collision.gameObject.CompareTag("enemy_home"))
            {
                isHomeAttack = true;
            }
        }
    }

    /// <summary>
    /// 공격을 받았을때 호출되게 만들기
    /// </summary>
    /// <param name="dmg">공격 대미지</param>
    public void Attack(int dmg)
    {
        unit.hp -= (dmg - unit.defense);
        Debug.Log($"{dmg - unit.defense}데미지! {unit.hp}남음.");
        if(unit.hp <= 0)
        {
            //임시로 삭제하게 처리 추후 재활용 할수 있게 처리할것
            Destroy(gameObject);
        }
    }

}