using OfficeOpenXml;
using System;
using System.IO;
using System.Threading.Tasks;

namespace SM64Lib.Text.Exporters;

public class ExcelExporter
{
    public ExcelExporter()
    {
        ExcelPackage.LicenseContext = LicenseContext.NonCommercial;
    }

    public async Task Export(string destFilePath, TextGroup[] groups)
    {
        var pkg = new ExcelPackage();

        foreach (var tg in groups)
        {
            var ws = pkg.Workbook.Worksheets.Add(tg.TextGroupInfo.Name);
            var hasDialogCells = false;

            ws.Cells.Style.VerticalAlignment = OfficeOpenXml.Style.ExcelVerticalAlignment.Top;
            ws.Cells.Style.HorizontalAlignment = OfficeOpenXml.Style.ExcelHorizontalAlignment.Left;
            ws.Row(1).Style.Font.Bold = true;
            ws.Cells[1, 1].Value = "#";
            ws.Cells[1, 2].Value = "Text";

            for (int i = 0; i < tg.Count; i++)
            {
                var ti = tg[i];
                var ri = i + 2;

                ws.Cells[ri, 1].Value = i;
                ws.Cells[ri, 2].Value = ti.Text;

                if (ti is TextTableDialogItem)
                    hasDialogCells = true;
            }


            for (int ri = 1; ri <= ws.Cells.Rows; ri++)
            {
                var r = ws.Row(ri);
                r.CustomHeight = false;
            }

            if (hasDialogCells)
            {
                var c = ws.Column(2);
                c.Style.WrapText = true;
                c.Width = 30;
            }

            for (int ci = 1; ci <= 2; ci++)
            {
                var c = ws.Column(ci);
                if (!c.Style.WrapText)
                    c.AutoFit();
            }
        }

        await pkg.SaveAsAsync(new FileInfo(destFilePath));
        pkg.Dispose();
    }

    public async Task Import(string filePath, TextGroup[] groups)
    {
        try
        {
            var pkg = new ExcelPackage();
            await pkg.LoadAsync(new FileInfo(filePath));

            foreach (var tg in groups)
            {
                var ws = pkg.Workbook.Worksheets[tg.TextGroupInfo.Name];
                if (ws is not null)
                {
                    for (int iti = 0; iti < tg.Count; iti++)
                    {
                        var ti = tg[iti];
                        var ri = iti + 2;
                        var c = ws.Cells[ri, 2];

                        ti.Text = ((string)c.Value).Replace("\r\n", "\n").Replace("\n", "\r\n");
                        tg.NeedToSave = true;
                    }
                }
            }

            pkg.Dispose();
        }
        catch (Exception)
        {
        }
    }
}