using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using DevExpress.XtraReports.UI;
using System.IO;
namespace GZTW.AyaNova.BLL
{
    /// <summary>
    /// Generate AyaNova reports from code
    /// </summary>
    public class ReportGenerator
    {
       /// <summary>
        /// Generates a pdf file of report and returns in memory stream
       /// </summary>
       /// <param name="r">AyaNova Report object</param>
       /// <param name="DataSource">Data source for report</param>
       /// <returns>A pdf file in memory stream</returns>
        public static MemoryStream GetReportAsPDF(Report r, object DataSource)
        {
            ReportDataSet source = null;
            if (DataSource is ReportDataSet)
                source = (ReportDataSet)DataSource;
            else
            {
                ReportDataSetAdapter rdsa = new ReportDataSetAdapter();
                source = new ReportDataSet();
                rdsa.Fill(source, DataSource);
            }

            //test with data portal and remove this if not necessary
            if (AyaBizUtils.LocaleText == null)
                throw new System.ApplicationException("Generate report -> AyaBizUtils.LocaleText is null");

           // source.LocaleTextTable = AyaBizUtils.LocaleText;
            
            XtraReport x = new XtraReport();
            x.LoadLayout(r.GetReportContent());
            LocalizeReport(x);

            if (source.Tables.Count == 1)
            {
                //It's a summary report so just bind to the report as normal
                x.DataSource = source;
            }
            else
            {
                //It's a detailed report made of subreports so remove the datasource
                //from the main report and set it on the detailereport band
                x.DataSource = null;
                DetailReportBand detailReport = x.Bands[BandKind.DetailReport] as DetailReportBand;
                if (detailReport != null)
                {
                    detailReport.DataSource = source;

                }
            }

            //case 3646 removed
           // if (AyaBizUtils.Trial) WatermarkReport(x);

            MemoryStream ms = new MemoryStream();
            x.ExportToPdf(ms);
            return ms;

            
        }

        static private void LocalizeReport(XtraReport x)
        {
            foreach (Band b in x.Bands)
            {
                LocalizeReportControl(b);
            }


        }

        /// <summary>
        /// Localize the text on the report if it starts with LT
        /// </summary>
        /// <param name="c"></param>
        static private void LocalizeReportControl(XRControl c)
        {
            if (c.Text.StartsWith("LT"))
                c.Text = AyaBizUtils.LocaleText.GetLocalizedText(c.Text.Replace("LT:", ""));

            foreach (XRControl d in c.Controls)
                LocalizeReportControl(d);


        }


        static internal void WatermarkReport(XtraReport x)
        {
                x.Watermark.Text = "TRIAL SAMPLE";
                x.Watermark.Font = new System.Drawing.Font("Tahoma", 72, System.Drawing.FontStyle.Bold);                
                x.Watermark.TextTransparency = 128;
                x.Watermark.ShowBehind = false;
           
        }


    }
}