using UnityEngine;
using System.IO;
using NPOI.SS.UserModel;
using NPOI.XSSF.UserModel;
using NPOI.HSSF.UserModel;
using TMPro;
using System.Collections.Generic;
using System.Text;
using System.Runtime.InteropServices;
using System;
using System.Reflection;

public class ReadExlAndSetValue : MonoBehaviour
{
    string basePath=Application.streamingAssetsPath+ "/ExcelData";

    public string excelName;
    public string sheetName;
    public string keyName;


    public void Awake()
    {
        //System.Text.Encoding.RegisterProvider(System.Text.CodePagesEncodingProvider.Instance);
        // 手动注册编码提供程序
      
        FillFromExcel();
    }



    private void FillFromExcel()
    {
        string filePath = Path.Combine( basePath, excelName+ ".xlsx");
        if (!File.Exists(filePath))
        {
            Debug.LogWarning($"Excel 文件不存在: {filePath}");
            return;
        }

        IWorkbook workbook;
        using (var fs = new FileStream(filePath, FileMode.Open, FileAccess.Read))
        {
            //if (Path.GetExtension(fileName).ToLower() == ".xls")
            //    workbook = new HSSFWorkbook(fs);
            //else
            //    workbook = new XSSFWorkbook(fs);
            workbook = new XSSFWorkbook(fs);
        }

        //string sheetName = sheetName; // Sheet 名与挂载物体名一致
        ISheet sheet = workbook.GetSheet(sheetName);
        if (sheet == null)
        {
            Debug.LogWarning($"Sheet 不存在: {sheetName}");
            return;
        }

        for (int i = 0; i <= sheet.LastRowNum; i++)
        {
            IRow row = sheet.GetRow(i);
            if (row == null) continue;

            ICell keyCell = row.GetCell(0);
            ICell valueCell = row.GetCell(1);
            if (keyCell == null || valueCell == null) continue;

            string key = GetCellStringValue(keyCell);
            


            if (key == keyName)
            {
                string value = GetCellStringValue(valueCell);
                ApplyValueToChild(gameObject, value);
                break;
            }
            //Transform target = FindTargetByKey(transform, key);
            //if (target != null)
            //{
            //    ApplyValueToChild(target.gameObject, value);
            //}
            //else
            //{
            //    Debug.LogWarning($"子物体未找到: {key}");
            //}
        }

        
    }

    private string GetCellStringValue(ICell cell)
    {
        if (cell == null) return "";
        switch (cell.CellType)
        {
            case CellType.String: return cell.StringCellValue;
            case CellType.Numeric: return cell.NumericCellValue.ToString();
            case CellType.Boolean: return cell.BooleanCellValue.ToString();
            case CellType.Formula:
                if (cell.CachedFormulaResultType == CellType.String)
                    return cell.StringCellValue;
                if (cell.CachedFormulaResultType == CellType.Numeric)
                    return cell.NumericCellValue.ToString();
                return cell.ToString();
            default: return "";
        }
    }



    /// <summary>
    /// 将 Excel value 填充到自身组件
    /// </summary>
    private void ApplyValueToChild(GameObject go, string value)
    {
        // TMP_InputField 优先
        TMP_InputField tmpInput = go.GetComponent<TMP_InputField>();
        if (tmpInput != null)
        {
            tmpInput.text = value;
            return; // 不再操作子物体
        }

        TMP_Dropdown tmpDropdown = go.GetComponent<TMP_Dropdown>();
        if (tmpDropdown != null)
        {
            string[] options = value.Split('-');
            tmpDropdown.ClearOptions();
            tmpDropdown.AddOptions(new List<string>(options));
            if (options.Length > 0)
            {
                tmpDropdown.value = 0; // 默认选第一个
                tmpDropdown.RefreshShownValue();
            }
            return;
        }

        TMP_Text tmpText = go.GetComponent<TMP_Text>();
        if (tmpText != null)
        {
            tmpText.text = value;
        }
    }
}