using System;
using System.Collections;
using System.Collections.Generic;
using iTextSharp.text;
using iTextSharp.text.pdf;
using Spring.Objects;
using Sleis.Utility;

namespace Sleis.Pdf
{

    public class ObjectColumnWriter : ElementWriter
    {

        public int BoderWidth { get; set; }

        public string HeaderLeft { get; set; }
        public string HeaderRight { get; set; }

        public int LabelColumnWidth { get; set; }
        public int ValueColumnWidth { get; set; }

        public ElementWriter NewLeftColumn { get; set; }
        public ElementWriter NewRightColumn { get; set; }
        public ObjectValueLabelParser LeftColumn { get; set; }
        public ObjectValueLabelParser RightColumn { get; set; }

        public override void Init()
        {
            ArgumentValidationUtility.ThrowOnNull(LeftColumn, "LeftColumn");
            if (LabelColumnWidth < 1)
            {
                LabelColumnWidth = 15;
            }
            if (ValueColumnWidth < 1)
            {
                ValueColumnWidth = 35;
            }
        }
        public override IElement GetElement(IElement parent, ObjectWrapper data)
        {
            LOG.Debug("Init Write");
            //BeforeWrite(pdf, context);            
            PdfPTable table = new PdfPTable(4);
            if (parent == null) { parent = table; }
            table.WidthPercentage = 100;
            table.SetWidths(new int[] { LabelColumnWidth, ValueColumnWidth, LabelColumnWidth, ValueColumnWidth });
            table.HorizontalAlignment = Element.ALIGN_LEFT;
            table.SpacingAfter = (SpaceAfter.HasValue) ? SpaceAfter.Value : 2;
            table.SpacingBefore = (SpaceBefore.HasValue) ? SpaceBefore.Value : 0;

            //exit and don't write anything if no values to write.
            //if ((LeftColumn == null && RightColumn == null) ||
             //   (LeftColumn != null && RightColumn != null && String.IsNullOrEmpty(LeftColumn.ParseValue(data)) && String.IsNullOrEmpty(RightColumn.ParseValue(data)))) return null;

            if (!String.IsNullOrEmpty(HeaderLeft))
            {
                //LEFT LABEL
                PdfPCell cell0Label = new PdfPCell(new Phrase(HeaderLeft, LabelFont));
                cell0Label.HorizontalAlignment = PdfPCell.ALIGN_LEFT;
                cell0Label.VerticalAlignment = PdfPCell.ALIGN_TOP;
                cell0Label.BorderWidth = BoderWidth;
                cell0Label.Colspan = 2;
                table.AddCell(cell0Label);

                //LEFT LABEL
                PdfPCell cell00Label = null;

                if (!String.IsNullOrEmpty(HeaderRight))
                {
                    cell00Label = new PdfPCell(new Phrase(HeaderRight, LabelFont));
                }
                else
                {
                    cell00Label = new PdfPCell(new Phrase(String.Empty, LabelFont));
                }

                cell00Label.HorizontalAlignment = PdfPCell.ALIGN_LEFT;
                cell00Label.VerticalAlignment = PdfPCell.ALIGN_TOP;
                cell00Label.BorderWidth = BoderWidth;
                cell00Label.Colspan = 2;
                table.AddCell(cell00Label);
            }

            //LEFT
            int leftColSpan = 1;
            //if (!String.IsNullOrEmpty(LeftColumn.Label))
            if(LeftColumn!=null)
            {
                PdfPCell cell1Label = new PdfPCell(new Phrase(LeftColumn.Label, Font));                
                cell1Label.HorizontalAlignment = PdfPCell.ALIGN_LEFT;
                cell1Label.VerticalAlignment = PdfPCell.ALIGN_TOP;
                cell1Label.BorderWidth = BoderWidth;
                table.AddCell(cell1Label);
            }
            else
            {
                leftColSpan = 2;
            }


            //PdfPCell cell1Value = new PdfPCell(new Phrase(LeftColumn.ParseValue(context), Font));
            PdfPCell cell1Value = new PdfPCell(new Phrase(LeftColumn.ParseValue(data), Font));
            cell1Value.HorizontalAlignment = PdfPCell.ALIGN_LEFT;
            cell1Value.VerticalAlignment = PdfPCell.ALIGN_TOP;
            cell1Value.BorderWidth = BoderWidth;
            cell1Value.Colspan = leftColSpan;


            //RIGHT
            int rightColSpan = 1;
            if (RightColumn != null)
            {

                table.AddCell(cell1Value);

                if (!String.IsNullOrEmpty(LeftColumn.Label))
                {
                    PdfPCell cell2Label = new PdfPCell(new Phrase(RightColumn.Label, Font));
                    cell2Label.HorizontalAlignment = PdfPCell.ALIGN_LEFT;
                    cell2Label.VerticalAlignment = PdfPCell.ALIGN_TOP;
                    cell2Label.BorderWidth = BoderWidth;
                    table.AddCell(cell2Label);
                }
                else
                {
                    rightColSpan = 2;
                }

                PdfPCell cell2Value = new PdfPCell(new Phrase(RightColumn.ParseValue(data), Font));
                cell2Value.HorizontalAlignment = PdfPCell.ALIGN_LEFT;
                cell2Value.VerticalAlignment = PdfPCell.ALIGN_TOP;
                cell2Value.BorderWidth = BoderWidth;
                cell2Value.Colspan = rightColSpan;

                table.AddCell(cell2Value);
            }
            else
            {
                cell1Value.Colspan = 3;
                table.AddCell(cell1Value);
            }           
            return table;
           
        }

        public override void Write(Document pdf, ObjectWrapper context)
        {
            LOG.Debug("Init Write");
            BeforeWrite(pdf, context);

            PdfPTable table = new PdfPTable(4);
            table.WidthPercentage = 100;
            table.SetWidths(new int[] { LabelColumnWidth, ValueColumnWidth, LabelColumnWidth, ValueColumnWidth });
            table.HorizontalAlignment = Element.ALIGN_LEFT;
            table.SpacingAfter = (SpaceAfter.HasValue) ? SpaceAfter.Value : 2;
            table.SpacingBefore = (SpaceBefore.HasValue) ? SpaceBefore.Value : 0;

            //exit and don't write anything if no values to write.
           // if ((LeftColumn == null && RightColumn == null) || 
           //     (LeftColumn!=null && RightColumn != null && String.IsNullOrEmpty(LeftColumn.ParseValue(context)) && String.IsNullOrEmpty(RightColumn.ParseValue(context)))) return;

            if (!String.IsNullOrEmpty(HeaderLeft))
            {
                //LEFT LABEL
                PdfPCell cell0Label = new PdfPCell(new Phrase(HeaderLeft, LabelFont));
                cell0Label.HorizontalAlignment = PdfPCell.ALIGN_LEFT;
                cell0Label.VerticalAlignment = PdfPCell.ALIGN_TOP;
                cell0Label.BorderWidth = BoderWidth;
                cell0Label.Colspan = 2;
                table.AddCell(cell0Label);

                //LEFT LABEL
                PdfPCell cell00Label = null;

                if (!String.IsNullOrEmpty(HeaderRight))
                {
                    cell00Label = new PdfPCell(new Phrase(HeaderRight, LabelFont));
                }
                else
                {
                    cell00Label = new PdfPCell(new Phrase(String.Empty, LabelFont));
                }

                cell00Label.HorizontalAlignment = PdfPCell.ALIGN_LEFT;
                cell00Label.VerticalAlignment = PdfPCell.ALIGN_TOP;
                cell00Label.BorderWidth = BoderWidth;
                cell00Label.Colspan = 2;
                table.AddCell(cell00Label);
            }

            //LEFT
            int leftColSpan = 1;
            //if (!String.IsNullOrEmpty(LeftColumn.Label))
            if(LeftColumn!=null)
            {
                PdfPCell cell1Label = new PdfPCell(new Phrase(LeftColumn.Label, Font));
                //PdfPCell cell1Label = new PdfPCell(new Phrase(LeftColumnHeader.Write(pdf, context), Font));
                cell1Label.HorizontalAlignment = PdfPCell.ALIGN_LEFT;
                cell1Label.VerticalAlignment = PdfPCell.ALIGN_TOP;
                cell1Label.BorderWidth = BoderWidth;
                table.AddCell(cell1Label);
            }
            else
            {
                leftColSpan = 2;
            }


            //PdfPCell cell1Value = new PdfPCell(new Phrase(LeftColumn.ParseValue(context), Font));
            PdfPCell cell1Value = new PdfPCell(new Phrase(LeftColumn.ParseValue(context), Font));
            cell1Value.HorizontalAlignment = PdfPCell.ALIGN_LEFT;
            cell1Value.VerticalAlignment = PdfPCell.ALIGN_TOP;
            cell1Value.BorderWidth = BoderWidth;
            cell1Value.Colspan = leftColSpan;


            //RIGHT
            int rightColSpan = 1;
            if (RightColumn != null)
            {

                table.AddCell(cell1Value);

                if (!String.IsNullOrEmpty(LeftColumn.Label))
                {
                    PdfPCell cell2Label = new PdfPCell(new Phrase(RightColumn.Label, Font));
                    cell2Label.HorizontalAlignment = PdfPCell.ALIGN_LEFT;
                    cell2Label.VerticalAlignment = PdfPCell.ALIGN_TOP;
                    cell2Label.BorderWidth = BoderWidth;
                    table.AddCell(cell2Label);
                }
                else
                {
                    rightColSpan = 2;
                }

                PdfPCell cell2Value = new PdfPCell(new Phrase(RightColumn.ParseValue(context), Font));
                cell2Value.HorizontalAlignment = PdfPCell.ALIGN_LEFT;
                cell2Value.VerticalAlignment = PdfPCell.ALIGN_TOP;
                cell2Value.BorderWidth = BoderWidth;
                cell2Value.Colspan = rightColSpan;

                table.AddCell(cell2Value);
            }
            else
            {
                cell1Value.Colspan = 3;
                table.AddCell(cell1Value);
            }

            pdf.Add(table);
        }
    }
}