using System;
using System.Collections;
using System.Collections.Generic;
using DamageNumbersPro;
using Unity.Mathematics;
using UnityEngine;

public class EntityStats : MonoBehaviour
{
    [Header("Identification")] 
    public string name;
    public Sprite icon; //only if applicable...
    public Entity thisEntity;
    [Header("Health")] 
    public float health;
    public float maxHealth;
    public DamageNumber damageNumbers;
    [Header("Health UI")] 
    public Transform healthBar;
    [Header("Stats")]
    public float speed;
    public float jumpPower;
    [Header("State")] 
    public bool isStalled;
    public bool abilitiesDisabled;
    [Header("Ground Detection")]
    [SerializeField] private Transform groundCheck;
    [SerializeField] private LayerMask groundLayer;
    [Header("Attack Origin")]
    public Transform attackOriginPoint;
    public Transform attackOriginCenter;
    [Header("Abilities")] 
    public List<Ability> abilities = new();
    [Header("Cache")]
    public Rigidbody2D rb;
    public SpriteRenderer sprite;
    public bool isFacingRight;
    public Color originalColor; //remove later
    public float damageColorChangeSpeed;

    private void Start()
    {
        originalColor = sprite.color;
    }

    public void TakeDamage(float damage)
    {
        health -= damage;
        StartCoroutine(DamageVisual());
        if (damageNumbers)
        {
            damageNumbers.Spawn(transform.position, damage.ToString());
        }
        if (healthBar)
        {
            UpdateHealthBar();
        }
        if (health <= 0)
        {
            thisEntity.OnDeath();
        }
    }

    private IEnumerator DamageVisual()
    {
        float currentState = 0;
        while (currentState < 1)
        {
            currentState += Time.deltaTime * damageColorChangeSpeed;
            sprite.color = Color.Lerp(Color.gray, originalColor, currentState);
            yield return null;
        }
    }

    public void Heal(float healing)
    {
        health += healing;
        health = Math.Clamp(health, 0, maxHealth);
    }
    public bool OnGround()
    {
        return Physics2D.OverlapCircle(groundCheck.position, 0.05f, groundLayer);
    }

    public void UpdateHealthBar()
    {
        healthBar.transform.localScale = new Vector3(math.clamp(health / maxHealth, 0f, 1f), 1f, 1f);
    }
}