using System;
using System.Collections.Concurrent;
using System.Collections.Generic;
using System.Data;
using System.Linq;
using System.Text.RegularExpressions;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
using ClosedXML.Excel;
using Extensiones;

public partial class General_ExcelToBD : System.Web.UI.Page
{
    #region propiedades 

    private string URLFile
    {
        get
        {
            if (ViewState["URLFile"] == null) { return ""; }
            else { return ViewState["URLFile"].ToString(); }
        }

        set { ViewState["URLFile"] = value; }
    }
    private string extension
    {
        get
        {
            if (ViewState["extension"] == null) { return ""; }
            else { return ViewState["extension"].ToString(); }
        }

        set { ViewState["extension"] = value; }
    }
    private List<ADSWorksBooks> workBooks
    {
        get
        {
            if (ViewState["workBooks"] == null) { return null; }
            else { return (List<ADSWorksBooks>)ViewState["workBooks"]; }
        }

        set { ViewState["workBooks"] = value; }
    }
    private ConcurrentDictionary<string, string> ColumnsTitles
    {
        get
        {
            if (ViewState["ColumnsTitles"] == null) { return null; }
            else { return (ConcurrentDictionary<string, string>)ViewState["ColumnsTitles"]; }
        }

        set { ViewState["ColumnsTitles"] = value; }
    }
    #endregion
    protected void Page_Load(object sender, EventArgs e)
    {

    }

    protected void LnkCargarArchivo_Click(object sender, EventArgs e)
    {
        List<Archivo> filesgral = TxtArchivoXls.getfiles().Archivos;
        workBooks = new List<ADSWorksBooks>();
        foreach (Archivo fileItem in filesgral)
        {
            extension = System.IO.Path.GetExtension(string.Format(@"{0}Temp\{1}", AppDomain.CurrentDomain.BaseDirectory, fileItem.filename)).Replace(".", "");
            URLFile = fileItem.FileUrl;
        }
        using (var workbook = new XLWorkbook(URLFile))
        {
            int position = 1;
            foreach (IXLWorksheet wokitem in workbook.Worksheets)
            {
                workBooks.Add(new ADSWorksBooks() { Name = wokitem.Name, position = position++ });
            }


        }
        DdlWorkBooks.DataSource = workBooks;
        DdlWorkBooks.DataBind();
        if (workBooks.Count > 0)
        {
            DdlWorkBooks.SelectedIndex = 1;
            DdlWorkBooks_SelectedIndexChanged(null, null);
        }
        LnkContinuar_Click(null, null);
    }

    protected void DdlWorkBooks_SelectedIndexChanged(object sender, EventArgs e)
    {
        using (var workbook = new XLWorkbook(URLFile))
        {

            int Filas = 0;
            int columnas = 0;
            IXLWorksheet workSheet = workbook.Worksheet(DdlWorkBooks.SelectedValue.ToEntero());
            Filas = workSheet.LastColumnUsed().CellCount();
            columnas = workSheet.LastRowUsed().CellCount();
            TxtFilas.Text = Filas.ToString();
            TxtInicia.Text = "2";
            TxtColumnas.Text = "48";//"62";// columnas.ToString();
        }

    }

    protected void Lnkdoit_Click(object sender, EventArgs e)
    {
        GVDatos.DataSource = GetDatosExcel();
        GVDatos.DataBind();
    }

    protected void LnkContinuar_Click(object sender, EventArgs e)
    {
        DataSet ds = new DataSet();
        DataTable dtDatos = new DataTable();
        DataTable dt = GetDatosExcel();
        ds.DataSetName = "DSDatos";
        dtDatos.TableName = "TCol";
        dt.TableName = "TData";

        dtDatos.Columns.Add(new DataColumn("Columnas", typeof(string)));
        dtDatos.Columns.Add(new DataColumn("LEN", typeof(int)));
        foreach (DataColumn item in dt.Columns)
        {
            DataRow drow = dtDatos.NewRow();
            drow["Columnas"] = item.ColumnName;
            int longitud = 0;
            foreach (DataRow dr in dt.Rows)
            {
                int length = dr[item.ColumnName].ToString().Length;

                longitud = length > longitud ? length : longitud;
            }
            drow["LEN"] = longitud;
            dtDatos.Rows.Add(drow);
        }

        ds.Tables.Add(dtDatos);
        ds.Tables.Add(dt);
        string xml = ds.GetXml();
         
        using (ClsNominas objbase = new ClsNominas())
        {
            if (objbase.ExcelToBD(xml))
            {
                ClsPaginas.Alert("Información capturada", ModExtensiones.TipoMensaje.MsgInformacion);
            }
        }
        GVDatos.DataSource = dt;
        GVDatos.DataBind();

        //Alert(string.Format("<div style=\"width:700px;\"><pre><xmp>{0}</xmp>\n</pre></br></div>", xml), ModExtensiones.TipoMensaje.MsgInformacion);

    }
    public string validtitle(string Valor)
    {

        Valor = Valor.Replace(" ", "_");
        Valor = Valor.Replace("$$$$", "_Money_");
        Valor = Valor.Replace("$$$", "_Money_");
        Valor = Valor.Replace("$$", "_Money_");
        Valor = Valor.Replace("$", "_Money_");
        Valor = Valor.Replace(".", string.Empty);
        Regex reg = new Regex("[*'\",&#^@]");
        Valor = reg.Replace(Valor, string.Empty);
        if (Valor.Trim().Length == 0)
        {
            Valor = "Val";
        }
        return Valor;
    }
    public DataTable GetDatosExcel()
    {

        DataTable dtDatos = new DataTable();
        ColumnsTitles = new ConcurrentDictionary<string, string>();
        using (var workbook = new XLWorkbook(URLFile))
        {
            IXLWorksheet workSheet = workbook.Worksheet(DdlWorkBooks.SelectedValue.ToEntero());
            DateTime d = new DateTime();
            bool continuarFila = true;
            string validaValor;

            int contadorValida = 0;
            bool haveTitles = chkcontieneTitulos.Checked;
            int FilaInicial = TxtInicia.Text.ToEntero() > 0 ? TxtInicia.Text.ToEntero() : 1;
            int ColumnaFinal = TxtColumnas.Text.ToEntero();
            int cFila = FilaInicial;
            int cCol = 1;

            while (cCol <= ColumnaFinal)
            {
                string Valor = cCol.ToString();
                if (haveTitles)
                {
                    Valor = workSheet.Cell(cFila, cCol).Value != null && workSheet.Cell(cFila, cCol).Value.GetType() == d.GetType() ? string.Format("{0:yyyy/MM/dd}", workSheet.Cell(cFila, cCol).Value) : workSheet.Cell(cFila, cCol).Value.ToString();
                    Valor = validtitle(Valor);
                }
                if (!ColumnsTitles.TryAdd(Valor, Valor))
                {
                    int x = 2;
                    while (!ColumnsTitles.TryAdd(string.Format("{0}_{1}", Valor, x), Valor)) { x++; }
                    Valor = string.Format("{0}_{1}", Valor, x);
                }
                dtDatos.Columns.Add(new DataColumn(Valor, typeof(string)));
                cCol++;
            }
            if (haveTitles)
            {
                cFila++;
            }
            while (continuarFila)
            {
                DataRow drow = dtDatos.NewRow();
                cCol = 1;
                validaValor = "";
                while (cCol <= ColumnaFinal)
                {
                    string Valor = workSheet.Cell(cFila, cCol).Value != null && workSheet.Cell(cFila, cCol).Value.GetType() == d.GetType() ? string.Format("{0:yyyy/MM/dd}", workSheet.Cell(cFila, cCol).Value) : workSheet.Cell(cFila, cCol).Value.ToString();
                    validaValor = string.Format("{0}{1}", validaValor, Valor);
                    drow[cCol - 1] = Valor;
                    cCol++;
                }
                if (validaValor.Trim() == "")
                {
                    contadorValida++;
                    if (contadorValida > 30)
                    {
                        continuarFila = false;
                    }
                }
                else
                {
                    contadorValida = 0;
                    dtDatos.Rows.Add(drow);
                }
                cFila++;
                if (cFila >= 1048576)
                {
                    continuarFila = false;
                }
            }
        }
        return dtDatos;
    }
}

[Serializable]
public class ADSWorksBooks
{
    public int position { get; set; }
    public string Name { get; set; }
}