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

namespace TH1_UI.View.Outside
{
    public class UIOutsideSelectOptionGroupMono : MonoBehaviour
    {
    

        public List<Button> options = new List<Button>();
        public RectTransform SelectBG;
        public bool Passive;
        public Action<uint> OnOptionClicked;

        public uint SelectedIndex => _selectedIndex;
    
        private uint _selectedIndex;
        private bool _firstShow;
        private Color _blue = new Color32(65,59,107,255);
        private Color _gray = new Color32(128,128,128,128);

        // SelectBG 颜色：Passive=false 时恢复 prefab 上配置的原色，Passive=true 时强制灰
        // 首次 Init 时缓存 prefab 原色，确保使用方可在 Inspector 自定义底色（音乐室等场景）
        private Image _bgImage;
        private Color _bgOrigColor;
        private bool _bgColorCached;

        private void EnsureBGColorCached()
        {
            if (_bgColorCached) return;
            if (SelectBG != null)
            {
                _bgImage = SelectBG.GetComponent<Image>();
                if (_bgImage != null) _bgOrigColor = _bgImage.color;
            }
            _bgColorCached = true;
        }

        public void Init(uint defaultIndex)
        {
            _selectedIndex = defaultIndex;
            _firstShow = false;

            // SelectBG 颜色按 Passive 切换
            EnsureBGColorCached();
            if (_bgImage != null)
                _bgImage.color = Passive ? _gray : _bgOrigColor;

            //Debug.Log($"[UIOutsideSelectOptionGroupMono.Init] Passive={Passive}, name={gameObject.name}");

            // 先设置所有按钮颜色（Passive模式下全灰色，否则蓝色）
            for (int i = 0; i < options.Count; i++)
            {
                var text = options[i].gameObject.GetComponentInChildren<TextMeshProUGUI>(true);
                if (text != null)
                    text.color = Passive ? Color.gray : _blue;
                 
                // 禁用按钮交互
                options[i].interactable = !Passive;
                
            }

            for (int i = 0; i < options.Count; i++)
            {
                options[i].onClick.RemoveAllListeners();
                uint index = (uint)i;
                if(!Passive)
                    options[i].onClick.AddListener(() =>
                    {
                        Select(index);
                        OnOptionClicked?.Invoke((uint)index);
                    });
                if (i == defaultIndex)
                    Select((uint)i);
            }
        }

        public void OnShow()
        {
            //Debug.Log($"[OnShow] _firstShow={_firstShow}, Passive={Passive}, name={gameObject.name}");
            if (_firstShow) return;
            _firstShow = true;
            Select(_selectedIndex);
        }
        public string GetSelectedString()
        {
            if (options.Count <= _selectedIndex) return "";
            return options[(int)_selectedIndex].gameObject.GetComponent<TextMeshProUGUI>()?.text;
        }
    

        public void Select(uint index)
        {
            if (index >= options.Count) return;
            //Debug.Log($"[Select] index={index}, Passive={Passive}, name={gameObject.name}");
            for(int i = 0;i < options.Count; i++)
                if (i == index)
                {
                    LayoutRebuilder.ForceRebuildLayoutImmediate(this.GetComponent<RectTransform>());
                    var pos = options[i].gameObject.GetComponent<RectTransform>().anchoredPosition;
                    var text = options[i].gameObject.GetComponentInChildren<TextMeshProUGUI>(true);
                    if(text != null) text.color = Color.white;
                    SelectBG.anchoredPosition = pos;
                }
                else
                {
                    var text = options[i].gameObject.GetComponentInChildren<TextMeshProUGUI>(true);
                    if (text != null)
                    {
                        text.color = Passive ? Color.gray : _blue;
                        //Debug.Log($"[Select] Button {i} Text set to {(Passive ? "Gray" : "Blue")}, actual={text.color}");
                    }
                    // 禁用按钮交互
                    if (Passive)
                        options[i].interactable = false;
                }
            _selectedIndex = index;
        }
        void Start()
        {
        
        }

        // Update is called once per frame
        void Update()
        {
        
        }
    }
}