using UnityEngine;
using System;

public class PlayerStats : MonoBehaviour
{
    public static PlayerStats Instance;

    public float MaxTotalHealth = 10f;   // Total number of heart containers that can ever be shown
    public float MaxHealth = 5f;         // Current number of *active* hearts
    public float Health = 5f;            // Current actual health

    public Action onHealthChangedCallback;

    private void Awake()
    {
        if (Instance == null)
        {
            Instance = this;
        }
        else
        {
            Destroy(gameObject);
        }
    }

    public void AddHealth()
    {
        if (MaxHealth < MaxTotalHealth)
        {
            MaxHealth += 1f;
            Health = MaxHealth;
            onHealthChangedCallback?.Invoke();
        }
    }

    public void Heal(float amount)
    {
        Health = Mathf.Clamp(Health + amount, 0, MaxHealth);
        onHealthChangedCallback?.Invoke();
    }

    public void TakeDamage(float amount)
    {
        Health = Mathf.Clamp(Health - amount, 0, MaxHealth);
        onHealthChangedCallback?.Invoke();

        if (Health <= 0)
        {
            Debug.Log("Player died.");
        }
    }
}