using System;
using UnityEngine;
using Code.Gameplay.Core;

namespace Code.Gameplay.Character.Stats
{
    public class HealthSystem : MonoBehaviour, IDamageable
    {
        [SerializeField] private float maxHealth = 100f;
        [SerializeField] private float currentHealth;
        
        public event Action<float, float> OnHealthChanged;
        public event Action OnDied;
        
        public float CurrentHealth => currentHealth;
        public float MaxHealth => maxHealth;
        public float HealthPercentage => currentHealth / maxHealth;
        public bool IsAlive => currentHealth > 0;

        private void Awake()
        {
            currentHealth = maxHealth;
        }

        public void TakeDamage(float damage)
        {
            if (!IsAlive) return;
            
            currentHealth = Mathf.Max(0, currentHealth - damage);
            OnHealthChanged?.Invoke(currentHealth, maxHealth);
            
            if (currentHealth <= 0)
            {
                Die();
            }
        }

        public void Heal(float amount)
        {
            if (!IsAlive) return;
            
            currentHealth = Mathf.Min(maxHealth, currentHealth + amount);
            OnHealthChanged?.Invoke(currentHealth, maxHealth);
        }

        private void Die()
        {
            OnDied?.Invoke();
        }

        public Transform GetTransform() => transform;
    }
}