using System;
using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using UnityEngine.Events;
using UnityEngine.UI;

public class ButtonInteraction : MonoBehaviour
{
    private Sprite normal;
    private Sprite highlight;
    private Sprite pressed;

    void Start()
    {
        var btn = GetButton();
        normal = GetImage().sprite;
        highlight = btn.spriteState.highlightedSprite;
        pressed = btn.spriteState.pressedSprite;
    }

    public void SetClickAction(UnityAction action)
    {
        var btn = GetButton();
        btn.onClick.AddListener(action);
    }

    public void ClickTrigger()
    {
        var btn = GetButton();
        btn.onClick.Invoke();
    }

    public void HighlightTrigger()
    {
        GetImage().sprite = highlight;
    }

    public void PressTrigger()
    {
        GetImage().sprite = pressed;

    }

    public void NormalTrigger()
    {
        GetImage().sprite = normal;
    }

    private Image GetImage()
    {
        return GetButton().gameObject.GetComponent<Image>();
    }

    private Button GetButton()
    {
        return GetComponent<Button>() ?? transform.GetChild(1).GetComponent<Button>();
    }
}