using UnityEngine;
using System.Collections;

public class EnemyAI : MonoBehaviour
{
    public enum FSMState { None, arvoreChase, Chase, Attack, Dead, AttackArvore }


    public float maxHealth = 100;
    public float health;
    public float speed = 5;
    Rigidbody2D EnemyRgdb;
    Vector3 facingDir;
    public Player opponent;
    Animator anim;
    public bool meeleAttacking;
    public float monsterPhysicalDmg = 30;
    public FSMState curState;
    public Vector3 facinDir;
    public Transform arvore;

    void Start()
    {

        monsterPhysicalDmg = 30;
        curState = FSMState.arvoreChase;
        anim = GetComponent<Animator>();
        EnemyRgdb = GetComponent<Rigidbody2D>();
        arvore = GameObject.FindGameObjectWithTag("arvore").transform;
        opponent = GameObject.FindGameObjectWithTag("opponent").GetComponent<Player>();



    }

    // Update is called once per frame
    void Update()
    {

        //if (Vector3.Distance(transform.position, opponent.transform.position) < 0.5)
          //  target = GameObject.FindGameObjectWithTag("opponent").transform;
        //else
          //  target = GameObject.FindGameObjectWithTag("arvore").transform;
        switch (curState)
        {
            case FSMState.arvoreChase: UpdatearvoreChaseState(); break;
            case FSMState.Chase: UpdateChaseState(); break;
            case FSMState.Attack: UpdateAttackState(); break;
            case FSMState.Dead: UpdateDeadState(); break;
            case FSMState.AttackArvore: UpdateAttackArvoreState(); break;
        }
        if (health <= 0)
        {
            curState = FSMState.Dead;
        }




    }

    private void UpdateAttackArvoreState()
    {

        facingDir = (arvore.position - transform.position).normalized;
        if (playerRange() < 0.7)
        {
        curState = FSMState.Chase;
        }
        if (!meeleAttacking)
        {
            StartCoroutine(monsterMeeleAttackArvore());

        }
    }

    private void UpdatearvoreChaseState()
    {
        transform.position = Vector3.MoveTowards(transform.position, arvore.position, Time.deltaTime * speed);
        facingDir = (arvore.position - transform.position).normalized;
        if (playerRange() < 0.7)
        {
            curState = FSMState.Chase;
        }
        if (Vector3.Distance(transform.position, arvore.position) < 0.5)
            curState = FSMState.AttackArvore;
    }

    private void UpdateDeadState()
    {
        Destroy(gameObject);
    }

    private void UpdateAttackState()
    {
        facingDir = (arvore.position - transform.position).normalized;
        if (Vector3.Distance(transform.position, opponent.transform.position) > 0.8)
            curState = FSMState.Chase;

        if (!meeleAttacking)
            StartCoroutine("monsterMeeleAttack");
    }

    private void UpdateChaseState()
    {
        facingDir = (arvore.position - transform.position).normalized;
        transform.position = Vector3.MoveTowards(transform.position, opponent.transform.position, Time.deltaTime * speed);
        if (Vector3.Distance(transform.position, arvore.position) < 0.5)
            curState = FSMState.AttackArvore;
        if (Vector3.Distance(transform.position, opponent.transform.position) > 4)
            curState = FSMState.arvoreChase;
        if (playerRange() > 0.5)
            curState = FSMState.Attack;

    }


    float playerRange(){
        return Vector2.Distance(transform.position, opponent.transform.position);

    }


    public void takeDamage(float damage)
    {
        health -= damage;

    }
    IEnumerator monsterMeeleAttack()
    {
        opponent.takeDmg(monsterPhysicalDmg);
        meeleAttacking = true;
        yield return new WaitForSeconds(3f);
        meeleAttacking = false;


    }

    IEnumerator monsterMeeleAttackArvore()
    {

        arvore.GetComponent<arvoreHP>().takeDmg(monsterPhysicalDmg);
        meeleAttacking = true;
        yield return new WaitForSeconds(3f);
        meeleAttacking = false;


    }



}