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

public class ChildSwitchBtnPanel : MonoBehaviour {

    [Serializable]
    public class ChildSwitchBtnEvent : UnityEvent<int>
    {
        public ChildSwitchBtnEvent() { }
    }

    [SerializeField]
    public ChildSwitchBtnEvent OnSwitchBtnClick;

    public GameObject _LastBtn;
    public GameObject _NextBtn;
    private int _TotalCount = 0;
    private static int _CurSelectIndex = 0;
	public void InitSwitchPanel(int totalCount, int curSelectIndex = 0)
    {
        _TotalCount = totalCount;
        _CurSelectIndex = curSelectIndex;
        if (totalCount == 0)
        {
            gameObject.SetActive(false);
            return;
        }

        _LastBtn.SetActive(_CurSelectIndex > 0);
        _NextBtn.SetActive(_CurSelectIndex < totalCount - 1);
    }

    public void OnSwithBtnClick(int index)
    {
        InitSwitchPanel(_TotalCount, _CurSelectIndex += index);
        if (OnSwitchBtnClick != null)
            OnSwitchBtnClick.Invoke(_CurSelectIndex);
    }
}