using UnityEngine;
using UnityEngine.Events;
using UnityEngine.EventSystems;
using UnityEngine.UI;

/// <summary>
/// View和Control功能分离的Toggle
/// </summary>
[RequireComponent(typeof(Toggle))]
public class UiToggleVC : MonoBehaviour, IPointerDownHandler
{
    private Toggle _toggle;
    public event UnityAction<bool> onToggleClick;
    
    private void Awake()
    {
        _toggle = GetComponent<Toggle>();
        _toggle.interactable = false;
        var colors = _toggle.colors;
        colors.disabledColor = Color.white;
        _toggle.colors = colors;
    }

    public void SetOn(bool isOn)
    {
        _toggle.isOn = isOn;
    }

    public void OnPointerDown(PointerEventData eventData)
    {
        if (onToggleClick != null)
            onToggleClick(!_toggle.isOn);
    }
}
/// <summary>
/// 用于控制一组UiToggle的工具
/// </summary>
public class UiToggleVCGroup
{
    private readonly UiToggleVC[] _toggleVcs;
    public event UnityAction<int> onToggleClick; 
    
    public UiToggleVCGroup(Toggle[] toggles)
    {
        _toggleVcs = new UiToggleVC[toggles.Length];
        for (var i = 0; i < _toggleVcs.Length; i++)
        {
            var index = i;
            _toggleVcs[i] = toggles[i].gameObject.AddComponent<UiToggleVC>();
            _toggleVcs[i].onToggleClick += a =>
            {
                if (a)
                    OnToggleClick(index);
            };
        }
    }

    public void SetToggle(int index)
    {
        for (var i = 0; i < _toggleVcs.Length; i++)
            _toggleVcs[i].SetOn(index == i);
    }

    private void OnToggleClick(int index)
    {
        if (onToggleClick != null)
            onToggleClick(index);
    }
}