using System;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using System.Text.Encodings.Web;
using System.Text.Json;
using System.Text.Unicode;
using System.Threading.Tasks;
using Avalonia.Controls;
using OfficeOpenXml;

namespace detect.gui.Views;

public class WebViewService(Window? w)
{
    public Window? Self { get; set; } = w;

    [Obsolete("过时的")]
    public async Task<string?> ImportExcel()
    {
        var dialog = new OpenFileDialog
        {
            Title = "打开文件",
            AllowMultiple = false,
            Filters =
            [
                new FileDialogFilter { Name = "Excel Files", Extensions = { "*.xls; *.xlsx" } }
            ]
        };
        var result = await dialog.ShowAsync(Self!);
        if (result is not { Length: 1 }) return null;
        try
        {
            var ccc = ConvertExcelToJson(result[0]);
            return ConvertExcelToJson(result[0]);
        }
        catch (Exception e)
        {
            return null;
        }
    }

    public static string ConvertExcelToJson(string excelFilePath)
    {
        ExcelPackage.LicenseContext = LicenseContext.NonCommercial;
        var fileInfo = new FileInfo(excelFilePath);
        using var package = new ExcelPackage(fileInfo);
        var worksheet = package.Workbook.Worksheets[0];
        var rowCount = worksheet.Dimension.Rows;
        var colCount = worksheet.Dimension.Columns;

        var data = new List<Dictionary<string, object>>();
        var headers = Enumerable.Range(1, colCount)
            .Select(col => worksheet.Cells[1, col].Text)
            .ToList();
        for (var row = 2; row <= rowCount; row++)
        {
            var rowData = new Dictionary<string, object>();
            for (var col = 1; col <= colCount; col++)
            {
                rowData[headers[col - 1]] = worksheet.Cells[row, col].Text;
            }

            data.Add(rowData);
        }
        return JsonSerializer.Serialize(data, new JsonSerializerOptions { WriteIndented = true, Encoder = JavaScriptEncoder.Create(UnicodeRanges.All) });
    }
}