using System;
using System.Collections.Generic;
using System.Diagnostics;
using System.Xml;
using Bytescout.PDF;

namespace ConvertXmlToPdfExample
{
    /// <summary>
    /// This example demonstrates how to create table from some XML data.
    /// Since your XML file has different structure the example just shows technique of XML data reading 
    //  and PDF table creation.
    /// </summary>
    class Program
    {
        static void Main()
        {
            // Load XML document
            XmlDocument xmlDocument = new XmlDocument();
            xmlDocument.Load(@"sample.xml");

            // Read columns information from XML data
            List<string> columns = new List<string>();
            XmlNodeList columnNodeList = xmlDocument.SelectNodes("/Report/Columns/Column");
            foreach (XmlNode node in columnNodeList)
                columns.Add(node.Attributes["Name"].Value);

            // Read row nodes from XML data
            XmlNodeList rowNodeList = xmlDocument.SelectNodes("/Report/ReportData");
            

            // Create new PDF document
            Document pdfDocument = new Document();
            pdfDocument.RegistrationName = "demo";
            pdfDocument.RegistrationKey = "demo";

            // If you wish to load an existing document uncomment the line below and comment the Add page section instead
            // pdfDocument.Load(@".\existing_document.pdf");

            // Add page
            Page page = new Page(PaperFormat.A4);
            pdfDocument.Pages.Add(page);
            
            DeviceColor lightGrayColor = new ColorGray(200);
            DeviceColor whiteColor = new ColorGray(255);


            // Create PDF table
            Table table = new Table();
            table.BackgroundColor = lightGrayColor;

            // Add columns
            for (int c = 0; c < columns.Count; c++)
            {
                TableColumn column = new TableColumn(columns[c], columns[c]);
                // Set column width
                column.Width = (c == 0)? 100 : 60;
                table.Columns.Add(column);
            }

            // Add rows
            foreach (XmlNode rowNode in rowNodeList)
            {
                // Create new row and set its background color
                TableRow row = table.NewRow();
                row.BackgroundColor = whiteColor;
                
                // Get cell values from XML data
                foreach (XmlNode childNode in rowNode.ChildNodes)
                {
                    // Get cell info from XML data
                    string columnName = childNode.Name;
                    int columnIndex = columns.IndexOf(childNode.Name);
                    string cellValue = childNode.InnerText;

                    // Set cell text
                    row[columnName].Text = cellValue;
                    // Set cell text alignment
                    row[columnName].TextFormat.HorizontalAlign = (columnIndex == 0) ? HorizontalAlign.Left : HorizontalAlign.Right;
                }

                // Add the row to the table
                table.Rows.Add(row);
            }

            // Draw the table on canvas
            page.Canvas.DrawTable(table, 20, 20);


            // Save document to file
            pdfDocument.Save("result.pdf");

            // Cleanup 
            pdfDocument.Dispose();

            // Open result document in default associated application (for demo purpose)
            ProcessStartInfo processStartInfo = new ProcessStartInfo("result.pdf");
            processStartInfo.UseShellExecute = true;
            Process.Start(processStartInfo);
        }
    }
}