using Microsoft.Data.SqlClient;
using OfficeOpenXml;
using System;
using System.Collections.Generic;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
//using static kmCustomReportsNET.ClassObj.ClsConstants;


namespace kmCustomReportsNET.ClassObj;

internal class ClsDobbsEmail_T1439 : IDisposable
{
  public string RptSaveToFolder { get; set; } = ClsConstants.KDrive + @"\Projects\Daily Report Archive";
  public string Template1Path { get; set; } = ClsConstants.KDrive + @"\Projects\Daily Reports - Dobbs\T1439 Template 01.xlsx";
  public string BusinessName { get; set; } = "DobbsTire";
  public ClsConstants.enuReportIDs ReportID { get; set; } = ClsConstants.enuReportIDs.T1439;
  public bool DebugMode { get; set; } = false;

  #region "Private Variables"
  DataSet? ds = null;
  List<string> FilesToAttach = new();
  #endregion

  public void Dispose()
  {
    if (ds != null)
      ds.Dispose();
    ds = null;
    FilesToAttach.Clear();
  }

  internal void Go()
  {
    ExcelPackage.LicenseContext = LicenseContext.NonCommercial;
    using (var cn = new SqlConnection(kmCommonLibsCore.Constants.cnRDB))
    {
      cn.Open();

      using (var cm = new SqlCommand("crpt.[Dobbs_T1439_EmailContests]", cn) { CommandType = CommandType.StoredProcedure, CommandTimeout = 120 })
      using (var da = new SqlDataAdapter(cm))
      {
        cm.Parameters.Add("@DateThruOverride", SqlDbType.Date).Value = DateTime.Parse("Oct 7, 2025");
        ds = new DataSet();
        da.Fill(ds);
      }
    }

    //

    if (ds != null && ds.Tables.Count > 2 && ds.Tables[0].Rows.Count == 1)
    {
      CreateWeeklyStandings();
      CreateDetailSnapshots();
    }
  }

  private void CreateWeeklyStandings()
  {
    DataRow drDates = ds.Tables[0].Rows[0];
    string xlsFilename;
    int ctr = 0;

    xlsFilename = Path.Combine(RptSaveToFolder, string.Format("Dobbs {0:yyyy-MM MMM} Week {1} Email Contest Results.xlsx", drDates["mthTo"], drDates["WeekNumber"]));
    if (File.Exists(xlsFilename))
    {
      string f0 = xlsFilename;
      while (File.Exists(f0))
      {
        f0 = Path.Combine(RptSaveToFolder, string.Format("Dobbs {0:yyyy-MM MMM} Week {1} Email Contest Results - OLD{2:000}.xlsx", drDates["mthTo"], drDates["WeekNumber"], ctr));
        ctr += 1;
      }
      File.Move(xlsFilename, f0);
    }

    // Standings file first

    using (var fs = new FileStream(Template1Path, FileMode.Open))
    using (var pkg = new ExcelPackage(fs))
    {
      ExcelWorksheet? s = null;  //pkg.Workbook.Worksheets[1];
      int r = 4, rTot = ds.Tables[1].Rows.Count;

      if (pkg.Workbook.Worksheets.Count < 1)
        s = pkg.Workbook.Worksheets.Add("Sheet1");
      else
        s = pkg.Workbook.Worksheets[0];

      s.Name = string.Format("{0:MMM-yyyy} Week {1} Results", drDates["mthTo"], drDates["WeekNumber"]);

      //s.Cells[1, 1].Value = string.Format("Email Contest Results\n{0:ddd MMM d} through {1:ddd MMM d, yyyy}", drDates["wkFrom"], drDates["wkTo"]);
      s.Cells[1, 1].Value = string.Format("Email Contest Results through {1:ddd MMM d, yyyy}", drDates["wkFrom"], drDates["wkTo"]);
      s.Cells[3, 3].Value = string.Format("Week {0}\nNew Emails", drDates["WeekNumber"]);

      foreach (DataRow dr in ds.Tables[1].Rows)
      {
        s.Cells[r, 1].Value = dr["Division"].ToString();
        s.Cells[r, 2].Value = Convert.ToInt32(dr["StoreNumber"]);
        s.Cells[r, 3].Value = Convert.ToInt32(dr["NewEmails"]);
        s.Cells[r, 4].Value = Convert.ToInt32(dr["TransactionsGreaterThanZero"]);
        s.Cells[r, 5].FormulaR1C1 = "=IF(RC[-1]=0,0,RC[-2]/RC[-1])";

        // Borders around each cell
        using (var rng = s.Cells[r, 1, r, 5])
        {
          rng.Style.Border.BorderAround(OfficeOpenXml.Style.ExcelBorderStyle.Thin);
          rng.Style.Border.Left.Style = OfficeOpenXml.Style.ExcelBorderStyle.Medium;
          rng.Style.Border.Right.Style = OfficeOpenXml.Style.ExcelBorderStyle.Medium;
        }

        for (int c = 1; c <= 3; c++)
          s.Cells[r, c].Style.Border.Right.Style = OfficeOpenXml.Style.ExcelBorderStyle.Thin;
        s.Cells[r, 5].Style.Border.BorderAround(OfficeOpenXml.Style.ExcelBorderStyle.Medium);

        // Shading
        if (r >= (rTot - 3 + 4))      // +4 since that's where we started
        {
          s.Cells[r, 5].Style.Fill.PatternType = OfficeOpenXml.Style.ExcelFillStyle.Solid;
          s.Cells[r, 5].Style.Fill.BackgroundColor.SetColor(Color.Red);
        }
        else
        {
          s.Cells[r, 5].Style.Fill.PatternType = OfficeOpenXml.Style.ExcelFillStyle.Solid;
          s.Cells[r, 5].Style.Fill.BackgroundColor.SetColor(Color.Yellow);
        }

        r++;
      }

      // Totals
      using (var rng = s.Cells[r, 1, r, 5])
      {
        rng.Style.Border.BorderAround(OfficeOpenXml.Style.ExcelBorderStyle.Thin);
        rng.Style.Border.Left.Style = OfficeOpenXml.Style.ExcelBorderStyle.Medium;
        rng.Style.Border.Right.Style = OfficeOpenXml.Style.ExcelBorderStyle.Medium;
        rng.Style.Fill.PatternType = OfficeOpenXml.Style.ExcelFillStyle.Solid;
        rng.Style.Fill.BackgroundColor.SetColor(Color.LightGray);
        rng.Style.Font.Bold = true;
      }
      for (int c = 1; c <= 3; c++)
        s.Cells[r, c].Style.Border.Right.Style = OfficeOpenXml.Style.ExcelBorderStyle.Thin;
      s.Cells[r, 5].Style.Border.BorderAround(OfficeOpenXml.Style.ExcelBorderStyle.Medium);

      //
      s.Cells[r, 1].Value = "Totals";
      s.Cells[r, 3].FormulaR1C1 = "=SUM(R4C:R[-1]C)";
      s.Cells[r, 4].FormulaR1C1 = "=SUM(R4C:R[-1]C)";
      s.Cells[r, 5].FormulaR1C1 = "=IF(RC[-1]=0,0,RC[-2]/RC[-1])";

      r++;
      pkg.SaveAs(xlsFilename);
      FilesToAttach.Add(xlsFilename);
    }
  }

  private void CreateDetailSnapshots()
  {
    DataRow drDates = ds.Tables[0].Rows[0];
    string xlsFilename;
    int ctr = 0;
    List<string> cols = new() { "dtRangeHumanized;Period;@","Division;Location;@",
      "TotalEmails;Total Emails;#,##0;R","NewEmails;New Emails;#,##0;R","OldEmails;Old Emails;#,##0;R",
      "Transactions;;#,##0;R","TransactionsGreaterThanZero;Invoices Greater than Zero;#,##0;R","Penetration;Penetration Rate;0.0%;R"};

    xlsFilename = Path.Combine(RptSaveToFolder, string.Format("Dobbs {0:yyyy-MM MMM} Week {1} Email Contest Detail.xlsx", drDates["mthTo"], drDates["WeekNumber"]));
    if (File.Exists(xlsFilename))
    {
      string f0 = xlsFilename;
      while (File.Exists(f0))
      {
        f0 = Path.Combine(RptSaveToFolder, string.Format("Dobbs {0:yyyy-MM MMM} Week {1} Email Contest Detail - OLD{2:000}.xlsx", drDates["mthTo"], drDates["WeekNumber"], ctr));
        ctr += 1;
      }
      File.Move(xlsFilename, f0);
    }

    using (var fs = new FileStream(xlsFilename, FileMode.Create, FileAccess.Write, FileShare.None))
    using (var pkg = new ExcelPackage(fs))
    {
      ExcelWorksheet? s = null;

      for (int tbNumber = 2; tbNumber < ds.Tables.Count; tbNumber++)
      {
        var dt = ds.Tables[tbNumber];
        int r = 2, c;

        if (dt != null && dt.Rows.Count > 0)
        {
          if (pkg.Workbook.Worksheets.Count < (tbNumber - 1))
            s = pkg.Workbook.Worksheets.Add("Sheet1");
          else
            s = pkg.Workbook.Worksheets[0];

          if (tbNumber == 2)
            s.Name = string.Format("Month of {0:MMM-yyyy}", drDates["mthTo"]); //dt.Rows[0]["dtRangeHumanized"]);
          else
            s.Name = string.Format("Week thru {0:ddd MMM d}", dt.Rows[0]["dtTo"]);

          c = 0;
          foreach (var col in cols)
          {
            var fld = col.Split(';');

            c++;
            if (fld.Length > 2 && !string.IsNullOrWhiteSpace(fld[2]))
              s.Columns[c].Style.Numberformat.Format = fld[2];
            if (fld.Length > 3 && fld[3] == "R")
              s.Columns[c].Style.HorizontalAlignment = OfficeOpenXml.Style.ExcelHorizontalAlignment.Right;

            s.Cells[1, c].Style.Numberformat.Format = "@";
            s.Cells[1, c].Style.Font.Bold = true;
            if (fld.Length > 1 && !string.IsNullOrWhiteSpace(fld[1]))
              s.Cells[1, c].Value = fld[1];
            else
              s.Cells[1, c].Value = fld[0];

            if (fld.Length > 3 && fld[3] == "R")
              s.Cells[1, c].Style.HorizontalAlignment = OfficeOpenXml.Style.ExcelHorizontalAlignment.Right;
          }

          foreach (DataRow dr in dt.Rows)
          {
            c = 0;
            foreach (var col in cols)
            {
              var fld = col.Split(';');

              s.Cells[r, ++c].Value = dr[fld[0]];
            }
            //s.Cells[r, 8].FormulaR1C1 = "=IF(RC7=0,0,RC4/RC7)";
            //s.Cells[r, 8].FormulaR1C1 = "=IF(RC6-RC5=0,0,RC4/(RC6-RC5))";
            s.Cells[r, 8].FormulaR1C1 = "=IF(RC[-2]-RC[-3]=0,0,RC[-4]/(RC[-2]-RC[-3]))";
            r++;
          }

          // Grand Totals
          r++;
          using (var rng = s.Cells[r, 1, r, 8])
            rng.Style.Font.Bold = true;

          s.Cells[r, 2].Value = "Totals";
          for (c = 3; c <= 7; c++)
          {
            s.Cells[r, c].FormulaR1C1 = "=SUM(R2C:R[-1]C)";
          }
          //s.Cells[r, 8].FormulaR1C1 = "=IF(RC7=0,0,RC4/RC7)";
          //s.Cells[r, 8].FormulaR1C1 = "=IF(RC6-RC5=0,0,RC4/(RC6-RC5))";
          s.Cells[r, 8].FormulaR1C1 = "=IF(RC[-2]-RC[-3]=0,0,RC[-4]/(RC[-2]-RC[-3]))";

          s.Cells.AutoFitColumns();
          s.View.FreezePanes(2, 1);
          s.Select("A2");
        }
      }

      pkg.Save();//As(xlsFilename);
      FilesToAttach.Add(xlsFilename);
    }
  }
}