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

public class Enemy : MonoBehaviour
{
    [SerializeField]
    private int MaxHealth = 2;

    private int Health;

    public bool Alive = true;

    public event Action<float> OnHealthChanged = delegate { };

    private Animator enemyAnimator = null;

    private PlayerManagement pm;

    private void Awake()
    {
        Health = MaxHealth;
        enemyAnimator = GetComponent<Animator>();
        pm = GameObject.Find("/OmniCharacterController").GetComponent<PlayerManagement>();
        GetComponent<EnemyMovement>().setEnemyAnimatior(enemyAnimator);
        SetUpEnemyBodyParts();
    }

    private void SetUpEnemyBodyParts()
    {
        EnemyBodyPart[] bodyParts = GetComponentsInChildren<EnemyBodyPart>();

        foreach(EnemyBodyPart enemyBodyPart in bodyParts)
        {
            enemyBodyPart.Setup(this);
        }
    }

    public void TakeDamage(int damage, bool arrowOnFire, bool headShot)
    {
        if (!Alive)
            return;

        if (headShot || arrowOnFire)
            damage *= 2;

        Health -= damage;

        float currentHealth = (float)Health / (float)MaxHealth;
        OnHealthChanged(currentHealth);

        if (Health <= 0)
            Kill(arrowOnFire, headShot);
        else
            // Add 1 point when hitting an enemy
            pm.AddPoints(1);
    }

    public void Kill(bool arrowOnFire, bool headShot)
    {
        Alive = false;

        Destroy(gameObject.transform.Find("HealthBarCanvas").gameObject);

        pm.EvaluatePointsOnKill(headShot, arrowOnFire);

        if(enemyAnimator != null)
        {
            if (!arrowOnFire)
                enemyAnimator.runtimeAnimatorController = Resources.Load("Animations/DeathByArrow/DeathByArrowController") as RuntimeAnimatorController;
            else
                enemyAnimator.runtimeAnimatorController = Resources.Load("Animations/DeathByBurn/DeathByBurnController") as RuntimeAnimatorController;

            GetComponent<EnemyMovement>().removeEnemySocket();

            // Find animation time and destroy enemy once animation ends
            Destroy(gameObject, enemyAnimator.runtimeAnimatorController.animationClips[0].length - 0.2f);
        }
        else
        {
            Destroy(gameObject);
        }

    }
}