using MapoDb;
using Microsoft.Reporting.WinForms;
using SteamWare;
using System;
using System.Collections.Generic;
using System.Data;
using System.Drawing.Imaging;
using System.Drawing.Printing;
using System.IO;
using System.Text;

/// <summary>
/// tipologia di report ammessi alla stampa...
/// </summary>
public enum reportRichiesto
{
    SchedaODL
}

/// <summary>
/// Classe che si occupa di stampare report da reportViewer via printer remota
/// </summary>
public class reportPrinter
{
    #region Public Fields

    /// <summary>
    /// singleton pubblico
    /// </summary>
    public static reportPrinter obj = new reportPrinter();

    #endregion Public Fields

    #region Public Methods

    /// <summary>
    /// dispone l'applicazione e rilascia le risorse
    /// </summary>
    public void Dispose()
    {
        if (m_streams != null)
        {
            foreach (Stream stream in m_streams)
                stream.Close();
            m_streams = null;
        }
    }

    /// <summary>
    /// Crea un report locale da file rdlc, carica i dati, esporta report come EMF file e quindi lo
    /// invia alla stampante
    /// </summary>
    /// <param name="tipoReport">report ammessi: ElencoMacchine / RichiestaIntervento</param>
    /// <param name="printerName">nome completo stampante (rispetto al server)</param>
    /// <param name="parametro">numIntMtz (codice numero richiesta)</param>
    public void printReport(reportRichiesto tipoReport, string printerName, string parametro)
    {
        LocalReport report = new LocalReport();
        devInfoParam deviceInfo = new devInfoParam("EMF", "21cm", "29.7cm", "0.2cm", "0.2cm", "0.2cm", "0.2cm");
        switch (tipoReport)
        {
            case reportRichiesto.SchedaODL:
                report.ReportPath = @".\Reports\Donati_ODL.rdlc";
                report.DataSources.Add(new ReportDataSource("MoonPro", caricaDati(tipoReport, parametro)));
                deviceInfo = new devInfoParam("EMF", "21cm", "29.7cm", "0.2cm", "0.2cm", "0.2cm", "0.2cm");
                break;
                //case reportRichiesto.RichiestaIntervento:
                //    report.ReportPath = @".\Reports\RichiestaIntervento.rdlc";
                //    report.DataSources.Add(new ReportDataSource("WebGim", caricaDati(tipoReport, parametro)));
                //    deviceInfo = new devInfoParam("EMF", "29.7cm", "21cm", "0.2cm", "0.2cm", "0.2cm", "0.2cm");
                //    break;
                //default:
                //    break;
        }
        doEmfPrint(printerName, report, deviceInfo.xmlParam);
    }

    #endregion Public Methods

    #region Protected Constructors

    /// <summary>
    /// oggetto protected
    /// </summary>
    /// <param name="args"></param>
    protected reportPrinter()
    {
    }

    #endregion Protected Constructors

    #region Private Fields

    private int m_currentPageIndex;
    private IList<Stream> m_streams;

    #endregion Private Fields

    #region Private Methods

    /// <summary>
    /// carica i dati richiesti dal report dalla StoredProcedure (filtrando quindi...)
    /// </summary>
    /// <param name="tipoReport">report ammessi: ElencoMacchine / RichiestaIntervento</param>
    /// <param name="periodoAnalizzato">
    /// oggetto che contiene data inizio e data fine dell'analisi richiesta per il report
    /// </param>
    /// <returns>tabella dati</returns>
    private DataTable caricaDati(reportRichiesto tipoReport, string idxObj)
    {
        DataLayer DataLayerObj = new DataLayer();
        // calcolo idxODL
        int idxOdl = 0;
        try
        {
            idxOdl = Convert.ToInt32(idxObj);
        }
        catch
        { }
        DataTable tab = new DataTable();
        switch (tipoReport)
        {
            case reportRichiesto.SchedaODL:
                tab = (DataTable)DataLayerObj.taODL.getByIdx(idxOdl, false);
                break;
                //case reportRichiesto.RichiestaIntervento:
                //    tab = (DataTable)TA_app.obj.taInterventiMtz.getByIdx(Convert.ToInt32(idxObj));
                //    break;
                //default:
                //    break;
        }
        return tab;
    }

    /// <summary>
    /// ciclo da fornire al renderizzatore dei report, per salvare 1 immagine da ogni pagina del report
    /// </summary>
    /// <param name="name"></param>
    /// <param name="fileNameExtension"></param>
    /// <param name="encoding"></param>
    /// <param name="mimeType"></param>
    /// <param name="willSeek"></param>
    /// <returns></returns>
    private Stream CreateStream(string name, string fileNameExtension, Encoding encoding, string mimeType, bool willSeek)
    {
        Stream stream = new FileStream(SteamWare.fileMover.getFilePath(@".\temp\" + name + "." + fileNameExtension), FileMode.Create);
        m_streams.Add(stream);
        return stream;
    }

    /// <summary>
    /// esegue print vero e proprio
    /// </summary>
    /// <param name="printerName"></param>
    /// <param name="report"></param>
    /// <param name="deviceInfo"></param>
    private void doEmfPrint(string printerName, LocalReport report, string deviceInfo)
    {
        // export in EMF
        Export(report, deviceInfo);
        m_currentPageIndex = 0;
        // stampo
        Print(printerName);
        // do dispose?
        Dispose();
    }

    /// <summary>
    /// Export del report come EMF (Enhanced Metafile) file.
    /// </summary>
    /// <param name="report"></param>
    private void Export(LocalReport report, string deviceInfo)
    {
        Warning[] warnings;
        m_streams = new List<Stream>();
        report.Render("Image", deviceInfo, CreateStream, out warnings);
        foreach (Stream stream in m_streams) stream.Position = 0;
    }

    /// <summary>
    /// funzione di stampa...
    /// </summary>
    private void Print(string printerName)
    {
        //const string printerName = "Microsoft Office Document Image Writer";
        //const string printerName = "Brother HL-2170W series";
        if (m_streams == null || m_streams.Count == 0)
            return;
        PrintDocument printDoc = new PrintDocument();
        printDoc.PrinterSettings.PrinterName = printerName;
        if (!printDoc.PrinterSettings.IsValid)
        {
            logger.lg.scriviLog(String.Format("Can't find printer \"{0}\".", printerName), tipoLog.ERROR);
            return;
        }
        printDoc.PrintPage += new PrintPageEventHandler(PrintPage);
        printDoc.Print();
    }

    /// <summary>
    /// Handler per PrintPageEvents
    /// </summary>
    /// <param name="sender"></param>
    /// <param name="ev"></param>
    private void PrintPage(object sender, PrintPageEventArgs ev)
    {
        Metafile pageImage = new Metafile(m_streams[m_currentPageIndex]);
        ev.Graphics.DrawImage(pageImage, ev.PageBounds);
        m_currentPageIndex++;
        ev.HasMorePages = (m_currentPageIndex < m_streams.Count);
    }

    #endregion Private Methods
}