using System.Collections.Generic;
using UnityEngine;
using DefaultNamespace.ProcessMode;
using Framework.Manager;
using UnityEngine.UI;

/// <summary>
/// 下拉框验证组件
/// 可以挂载到任何 Dropdown 上，实现选择正确后自动跳转引导
/// </summary>
public class DropdownValidator : MonoBehaviour
{
    [Header("验证设置")]
    [Tooltip("是否启用自动跳转功能")]
    [SerializeField] private bool enableAutoJump = true;
    
    [Tooltip("是否启用调试日志")]
    [SerializeField] private bool enableDebugLog = true;
    
    [Tooltip("验证延迟时间（秒），避免频繁验证")]
    [SerializeField] private float validationDelay = 0.5f;
    
    private Dropdown dropdown;
    private int lastValidatedIndex = -1;

    /// <summary>
    /// 初始化组件
    /// </summary>
    private void Awake()
    {
        dropdown = GetComponent<Dropdown>();
        if (dropdown == null)
        {
            Debug.LogError($"DropdownValidator: 在 {gameObject.name} 中未找到 Dropdown 组件！");
            return;
        }
        
        // 监听选择变化事件
        dropdown.onValueChanged.AddListener(OnDropdownValueChanged);
        
        if (enableDebugLog)
        {
            Debug.Log($"DropdownValidator: 初始化完成 - {gameObject.name}");
        }
    }

    /// <summary>
    /// 下拉框选择变化回调
    /// </summary>
    /// <param name="value">选择的索引</param>
    private void OnDropdownValueChanged(int value)
    {
        // 检查是否与上次验证的索引相同
        if (value == lastValidatedIndex)
        {
            return;
        }
        
        // 立即执行验证（移除防抖延迟）
        ValidateSelection(value);
    }

    /// <summary>
    /// 验证选择并自动跳转
    /// </summary>
    /// <param name="selectedIndex">选择的索引</param>
    private void ValidateSelection(int selectedIndex)
    {
        lastValidatedIndex = selectedIndex;
        
        // 检查是否有有效选择
        if (selectedIndex < 0 || selectedIndex >= dropdown.options.Count)
        {
            if (enableDebugLog)
            {
                Debug.Log($"DropdownValidator: 选择无效，不验证 - 下拉框: {gameObject.name}, 索引: {selectedIndex}");
            }
            return;
        }
        
        // 获取选择的文本
        string selectedText = dropdown.options[selectedIndex].text;
        
        if (enableDebugLog)
        {
            Debug.Log($"DropdownValidator: 开始验证选择 - 下拉框: {gameObject.name}, 索引: {selectedIndex}, 文本: '{selectedText}'");
        }
        
        // 使用新的严谨验证方法：验证选择是否匹配当前动作的正确答案，传递UI的Instance ID
        string uiInstanceId = gameObject.GetInstanceID().ToString();
        bool isSelectionCorrect = MotionFramework.MotionEngine.GetModule<ProcessManager>().ValidateInputAgainstCurrentAction(selectedText, uiInstanceId);
        
        if (isSelectionCorrect)
        {
            if (enableDebugLog)
            {
                Debug.Log($"DropdownValidator: 选择正确自动跳转 - 下拉框: {gameObject.name}, 索引: {selectedIndex}, 文本: '{selectedText}'");
            }
            
            if (enableAutoJump)
            {
                // 选择正确，直接跳转到下一个引导步骤（不调用 HandleClick）
                InterfaceManager.LoadTriggerNextGuide();
            }
        }
        else
        {
            if (enableDebugLog)
            {
                Debug.Log($"DropdownValidator: 选择错误，不跳转 - 下拉框: {gameObject.name}, 索引: {selectedIndex}, 文本: '{selectedText}'");
            }
        }
    }

    /// <summary>
    /// 手动触发验证
    /// </summary>
    public void TriggerValidation()
    {
        if (dropdown != null && dropdown.value >= 0 && dropdown.value < dropdown.options.Count)
        {
            ValidateSelection(dropdown.value);
        }
    }

    /// <summary>
    /// 设置是否启用自动跳转
    /// </summary>
    /// <param name="enabled">是否启用</param>
    public void SetAutoJumpEnabled(bool enabled)
    {
        enableAutoJump = enabled;
        if (enableDebugLog)
        {
            Debug.Log($"DropdownValidator: 自动跳转功能 {(enabled ? "启用" : "禁用")} - {gameObject.name}");
        }
    }

    /// <summary>
    /// 设置验证延迟时间
    /// </summary>
    /// <param name="delay">延迟时间（秒）</param>
    public void SetValidationDelay(float delay)
    {
        validationDelay = Mathf.Max(0f, delay);
        if (enableDebugLog)
        {
            Debug.Log($"DropdownValidator: 验证延迟设置为 {validationDelay} 秒 - {gameObject.name}");
        }
    }

    /// <summary>
    /// 清除下拉框选择
    /// </summary>
    public void ClearSelection()
    {
        if (dropdown != null)
        {
            dropdown.value = 0; // 重置为第一个选项
            lastValidatedIndex = -1;
        }
    }

    /// <summary>
    /// 获取当前选择值
    /// </summary>
    /// <returns>当前选择的文本</returns>
    public string GetCurrentValue()
    {
        if (dropdown != null && dropdown.value >= 0 && dropdown.value < dropdown.options.Count)
        {
            return dropdown.options[dropdown.value].text;
        }
        return "";
    }

    /// <summary>
    /// 获取当前选择索引
    /// </summary>
    /// <returns>当前选择的索引</returns>
    public int GetCurrentIndex()
    {
        return dropdown?.value ?? -1;
    }

    /// <summary>
    /// 设置下拉框选项
    /// </summary>
    /// <param name="options">选项列表</param>
    public void SetOptions(List<string> options)
    {
        if (dropdown != null)
        {
            dropdown.ClearOptions();
            dropdown.AddOptions(options);
            lastValidatedIndex = -1;
            
            if (enableDebugLog)
            {
                Debug.Log($"DropdownValidator: 设置选项完成 - 下拉框: {gameObject.name}, 选项数量: {options.Count}");
            }
        }
    }
}