using MiniExcelLibs;
using SharpCompress.Common;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace Admin.NET.Core;

/// <summary>
/// 
/// </summary>
/// <typeparam name="T"></typeparam>
public class InputExcelUtil<T> where T : class, new()
{
    private static List<string> extName = new List<string>() { ".xls", ".xlsx" };

    /// <summary>
    /// 导入Excel内容读取到List<T>中
    /// </summary>
    /// <param name="file"></param>
    /// <param name="sheetName"></param>
    /// <returns></returns>
    public static List<T> InputExcel(IFormFile file, string sheetName = null)
    {
        //获取文件后缀名
        string type = Path.GetExtension(file.FileName);
        //判断是否导入合法文件
        if (!extName.Contains(type))
        {
            return null;
        }

        //  List<T> list = new List<T>();
        //转成为文件流
        //MemoryStream ms = new MemoryStream();
        //file.CopyTo(ms);
        //ms.Seek(0, SeekOrigin.Begin);
        ////实例化T数组

        ////获取数据
        //   list = InputExcel(ms, sheetName);
        //根据指定路径读取文件
        var fs = file.OpenReadStream();
        List<T> list = fs.Query<T>(sheetName: sheetName).ToList();
        //  list = ms.Query().ToList();
        return list;
    }

}