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

/// <summary>
/// 通用设置面板基类
/// 提供标准化的设置面板布局和功能
/// </summary>
public abstract class BaseSettingPanel : BasePanel
{
    [Header("面板标题")]
    public TextMeshProUGUI TitleText;
    public TextMeshProUGUI SubtitleText;
    
    [Header("设置项容器")]
    public Transform SettingsContainer;
    public GameObject SettingItemPrefab;
    
    [Header("标准按钮")]
    public Button HomeButton;
    public Button ConfirmButton;
    public Button BackButton;
    public Button ResetButton;
    
    protected SettingsViewModel _viewModel;
    protected List<SettingItemComponent> _settingItems = new List<SettingItemComponent>();
    
    public override void Init()
    {
        _viewModel = new SettingsViewModel();
        
        SetupTitle();
        SetupStandardButtons();
        CreateSettingItems();
        LoadCurrentValues();
    }
    
    /// <summary>
    /// 设置面板标题
    /// </summary>
    protected virtual void SetupTitle()
    {
        if (TitleText != null)
            TitleText.text = GetPanelTitle();
            
        if (SubtitleText != null)
            SubtitleText.text = GetPanelSubtitle();
    }
    
    /// <summary>
    /// 设置标准按钮事件
    /// </summary>
    protected virtual void SetupStandardButtons()
    {
        if (HomeButton != null)
        {
            HomeButton.onClick.AddListener(() =>
            {
                OnHomeButtonClicked();
                ClosePanel();
                UIManager.Instance.ShowPanel<MainPanel>();
            });
        }
        
        if (ConfirmButton != null)
        {
            ConfirmButton.onClick.AddListener(() =>
            {
                if (ValidateAndApplySettings())
                {
                    OnConfirmButtonClicked();
                    ClosePanel();
                }
            });
        }
        
        if (BackButton != null)
        {
            BackButton.onClick.AddListener(() =>
            {
                OnBackButtonClicked();
                ClosePanel();
            });
        }
        
        if (ResetButton != null)
        {
            ResetButton.onClick.AddListener(() =>
            {
                ResetToDefaults();
                OnResetButtonClicked();
            });
        }
    }
    
    /// <summary>
    /// 创建设置项
    /// </summary>
    protected virtual void CreateSettingItems()
    {
        if (SettingsContainer == null) return;
        
        var settingConfigs = GetSettingConfigurations();
        
        foreach (var config in settingConfigs)
        {
            var settingItem = CreateSettingItem(config);
            if (settingItem != null)
            {
                _settingItems.Add(settingItem);
            }
        }
    }
    
    /// <summary>
    /// 创建单个设置项
    /// </summary>
    protected virtual SettingItemComponent CreateSettingItem(SettingConfig config)
    {
        GameObject itemGO;
        
        if (SettingItemPrefab != null)
        {
            itemGO = Instantiate(SettingItemPrefab, SettingsContainer);
        }
        else
        {
            // 如果没有预制体，创建基础设置项
            itemGO = CreateBasicSettingItem();
        }
        
        var settingItem = itemGO.GetComponent<SettingItemComponent>();
        if (settingItem == null)
        {
            settingItem = itemGO.AddComponent<SettingItemComponent>();
        }
        
        // 配置设置项
        ConfigureSettingItem(settingItem, config);
        
        return settingItem;
    }
    
    /// <summary>
    /// 配置设置项
    /// </summary>
    protected virtual void ConfigureSettingItem(SettingItemComponent item, SettingConfig config)
    {
        item.SetInfo(config.Title, config.Description, config.Icon);
        
        switch (config.Type)
        {
            case SettingType.Slider:
                var slider = item.CreateSlider(config.MinValue, config.MaxValue, config.CurrentValue, config.WholeNumbers);
                item.OnSliderChanged.AddListener((value) => OnSettingChanged(config.Key, value));
                break;
                
            case SettingType.Toggle:
                var toggle = item.CreateToggle(config.CurrentValue > 0);
                item.OnToggleChanged.AddListener((value) => OnSettingChanged(config.Key, value));
                break;
                
            case SettingType.InputField:
                var input = item.CreateInputField(config.Placeholder, config.StringValue);
                item.OnInputChanged.AddListener((value) => OnSettingChanged(config.Key, value));
                break;
                
            case SettingType.Dropdown:
                var dropdown = item.CreateDropdown(config.Options, (int)config.CurrentValue);
                item.OnDropdownChanged.AddListener((value) => OnSettingChanged(config.Key, value));
                break;
                
            case SettingType.Button:
                var button = item.CreateButton(config.ButtonText);
                item.OnButtonClicked.AddListener(() => OnSettingButtonClicked(config.Key));
                break;
        }
    }
    
    /// <summary>
    /// 创建基础设置项GameObject
    /// </summary>
    protected virtual GameObject CreateBasicSettingItem()
    {
        var itemGO = new GameObject("SettingItem", typeof(RectTransform));
        itemGO.transform.SetParent(SettingsContainer, false);
        
        // 设置布局
        var rect = itemGO.GetComponent<RectTransform>();
        rect.anchorMin = new Vector2(0, 1);
        rect.anchorMax = new Vector2(1, 1);
        rect.sizeDelta = new Vector2(0, 60);
        
        return itemGO;
    }
    
    /// <summary>
    /// 验证并应用设置
    /// </summary>
    protected virtual bool ValidateAndApplySettings()
    {
        // 默认返回true，子类可以重写进行验证
        return true;
    }
    
    /// <summary>
    /// 重置为默认值
    /// </summary>
    protected virtual void ResetToDefaults()
    {
        var configs = GetSettingConfigurations();
        foreach (var config in configs)
        {
            OnSettingChanged(config.Key, config.DefaultValue);
        }
        LoadCurrentValues();
    }
    
    /// <summary>
    /// 加载当前值到UI
    /// </summary>
    protected virtual void LoadCurrentValues()
    {
        // 子类实现具体的值加载逻辑
    }
    
    // 抽象方法 - 子类必须实现
    protected abstract string GetPanelTitle();
    protected abstract string GetPanelSubtitle();
    protected abstract List<SettingConfig> GetSettingConfigurations();
    
    // 虚方法 - 子类可以重写
    protected virtual void OnSettingChanged(string key, object value) { }
    protected virtual void OnSettingButtonClicked(string key) { }
    protected virtual void OnHomeButtonClicked() { }
    protected virtual void OnConfirmButtonClicked() { }
    protected virtual void OnBackButtonClicked() { }
    protected virtual void OnResetButtonClicked() { }
    
    public virtual void ClosePanel()
    {
        UIManager.Instance.HidePanel<BaseSettingPanel>();
    }
}

/// <summary>
/// 设置项配置
/// </summary>
[System.Serializable]
public class SettingConfig
{
    public string Key;
    public string Title;
    public string Description;
    public Sprite Icon;
    public SettingType Type;
    public float MinValue;
    public float MaxValue;
    public float CurrentValue;
    public float DefaultValue;
    public bool WholeNumbers;
    public string StringValue;
    public string Placeholder;
    public string[] Options;
    public string ButtonText;
}

/// <summary>
/// 设置类型
/// </summary>
public enum SettingType
{
    Slider,
    Toggle,
    InputField,
    Dropdown,
    Button
}