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

public class Damageable : MonoBehaviour
{
#if (UNITY_EDITOR)
    // ONLY FOR DEBUG USE
    [SerializeField]
    private bool selfDamage = false;
#endif
    Animator animator;

    [SerializeField]
    private int _maxHealth = 100;
    [SerializeField]
    private int _health = 100;
    [SerializeField]
    private bool _isAlive = true;
    [SerializeField]
    private bool isInvincible = false;
    private float timeSinceHit = 0f;
    public float invincibilityTime = 0.25f;

    public AudioClip hitSound;
    public AudioClip healSound;
    public AudioClip deathSound;

    public int MaxHealth
    {
        get { return _maxHealth; }
        set { _maxHealth = value; }
    }
    public int Health
    {
        get { return _health; }
        set
        {
            if (value > MaxHealth)
            {
                _health = MaxHealth;
            }
            else
            {
                _health = value;
            }
            if (value <= 0)
            {
                IsAlive = false;
                if (deathSound != null)
                {
                    SoundManager.instance.PlaySoundAtPoint(gameObject, deathSound.name);
                }
            }
        }
    }
    public bool IsAlive
    {
        get { return _isAlive; }
        private set
        {
            _isAlive = value;
            animator.SetBool(AnimationStrings.isAlive, value);
        }
    }

    private void Awake()
    {
        //Health = MaxHealth;
        animator = GetComponent<Animator>();
    }
    private void Update()
    {
        if (isInvincible)
        {
            if (timeSinceHit > invincibilityTime)
            {
                isInvincible = false;
                timeSinceHit = 0;
            }
            else
            {
                timeSinceHit += Time.deltaTime;
            }
        }
#if (UNITY_EDITOR)
        if (selfDamage)
        {
            Hit(10);
        }
#endif
    }

    public void Hit(int damage)
    {
        if (IsAlive && !isInvincible)
        {
            int actualDamageAmount = Mathf.Min(damage, Health);
            Health -= actualDamageAmount;
            isInvincible = true;

            CharacterEvents.characterDamaged.Invoke(gameObject, actualDamageAmount);
            if (hitSound != null)
            {
                SoundManager.instance.PlaySoundAtPoint(gameObject, hitSound.name);
            }
        }
    }

    public bool Heal(int healAmount)
    {
        bool result = false;
        if (IsAlive && Health < MaxHealth)
        {
            int actualHealAmount = Mathf.Min(healAmount, MaxHealth - Health);
            Health += actualHealAmount;

            CharacterEvents.characterHealed.Invoke(gameObject, actualHealAmount);

            result = true;
            if (healSound != null)
            {
                SoundManager.instance.PlaySoundAtPoint(gameObject, healSound.name);
            }

        }
        return result;
    }
}