using UnityEngine;
using TMPro;
using System;

public class DamageIndicatorText : MonoBehaviour
{
    static readonly int _damageNameHash = Animator.StringToHash("damage");

    [SerializeField] TextMeshProUGUI text;
    [SerializeField] Animator animator;

    static Camera _mainCamera;
    static Camera _uiCamera;

    public bool IsShowing => gameObject.activeInHierarchy;
    public event Action<DamageIndicatorText> OnComplete;

    private void Awake()
    {
        if(_mainCamera == null)
            _mainCamera = Camera.main;

        if(_uiCamera == null)
            _uiCamera = GameObject.FindGameObjectWithTag(GameProperty.Instance.UICameraTag).GetComponent<Camera>();
    }

    private void Update()
    {
        if (animator.IsComplete(_damageNameHash))
        {
            OnComplete?.Invoke(this);
            Hide();
        }
    }

    public void SetText(string text, float fontSize, Color color)
    {
        this.text.color = color;
        this.text.fontSize = fontSize;
        this.text.text = text;
    }

    public void Show()
    {
        gameObject.SetActive(true);
        animator.Play(_damageNameHash);
    }

    public void Show(Vector2 position)
    {
        var screenPos = _mainCamera.WorldToScreenPoint(position);
        RectTransformUtility.ScreenPointToLocalPointInRectangle(transform.parent as RectTransform, screenPos, _uiCamera, out Vector2 localPos);
        transform.localPosition = localPos;

        gameObject.SetActive(true);
        animator.Play(_damageNameHash);
    }

    public void Hide()
    {
        gameObject.SetActive(false);
    }
}