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

public class ToggleButtonGroupController : MonoBehaviour
{
    public string buttonGroupName = "ButtonGroup";

    private Transform buttonGroup;
    private List<Button> buttons = new List<Button>();
    private Button selectedButton;

    // 高亮与默认颜色
    private readonly Color selectedColor = new Color32(0x3E, 0xAB, 0x02, 255);  // #3EAB02
    private readonly Color normalColor = new Color32(0x00, 0x00, 0x00, 112);    // #000000, alpha 112

    void Start()
    {
        buttonGroup = transform.Find(buttonGroupName);
        if (buttonGroup == null)
        {
            Debug.LogError($"ButtonGroup '{buttonGroupName}' not found under {gameObject.name}");
            return;
        }

        // 查找所有按钮并绑定点击事件
        foreach (Transform child in buttonGroup)
        {
            Button btn = child.GetComponent<Button>();
            if (btn != null)
            {
                buttons.Add(btn);
                btn.onClick.AddListener(() => OnButtonClicked(btn));
            }
        }

        // 默认选中第一个
        if (buttons.Count > 0)
            OnButtonClicked(buttons[0]);
    }

    private void OnButtonClicked(Button clickedButton)
    {
        selectedButton = clickedButton;

        foreach (Button btn in buttons)
        {
            Image bgImage = btn.transform.Find("BG")?.GetComponent<Image>();
            if (bgImage != null)
            {
                bgImage.color = (btn == selectedButton) ? selectedColor : normalColor;
            }
        }
    }

    public string GetSelectedButtonName()
    {
        return selectedButton != null ? selectedButton.name : "";
    }
}