using System;
using TMPro;
using UnityEngine;
using UnityEngine.Serialization;

public class Player : MonoBehaviour
{
    public event Action<int> DiamondCountUpdated;
    public event Action<int> HealthUpdated; 
    
    [SerializeField] private int maxHealth;
    [SerializeField] private int diamonds;
    [SerializeField] private GameObject rooms;
    private int _healthIndex = 0;
    private readonly int[] _healthBar = {0, 0, -1, -2, -4, -6, -9, -12, -16, -20};

    private void OnEnable()
    {
        RoomRewards.DiamondsRewarded += AddDiamonds;
        RoomRewards.DamageDealt += TakeDamage;
        ChestRewardSelection.DiamondAndLifeSelected += HandleDiamondAndLifeAbilitySelected; 
    }

    private void OnDisable()
    {
        RoomRewards.DiamondsRewarded -= AddDiamonds;
        RoomRewards.DamageDealt -= TakeDamage;
    }

    private void Start() {
        UpdateGUI();
    }

    public void AddDiamonds(int count)
    {
        diamonds += count;
        UpdateGUI();
    }

    public void TakeDamage(int damage)
    {
        if (_healthIndex + damage < _healthBar.Length)
        {
            _healthIndex += damage;
            UpdateGUI();
        }
    }

    public void Heal(int healAmount)
    {
        if (_healthIndex - healAmount >= 0)
        {
            _healthIndex -= healAmount;
            UpdateGUI();
        }
    }

    private void UpdateGUI()
    {
        DiamondCountUpdated?.Invoke(diamonds);
        HealthUpdated?.Invoke(_healthIndex);
    }

    private void HandleDiamondAndLifeAbilitySelected()
    {
        Heal(1);
        AddDiamonds(1);
    }
}