using ComPDFKit.PDFDocument;
using System;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Xml.Linq;
using static System.Net.Mime.MediaTypeNames;

namespace HeaderFooterTest
{
    internal class HeaderFooterTest
    {
        private static string outputPath = Path.GetDirectoryName(Path.GetDirectoryName(Path.GetDirectoryName(System.IO.Directory.GetCurrentDirectory()))) + "\\Output\\HeaderFooter";

        static void Main(string[] args)
        {
            SDKLicenseHelper.LicenseVerify();

            CPDFDocument document = CPDFDocument.InitWithFilePath("Blank Page.pdf");

            if (!Directory.Exists(outputPath))
            {
                Directory.CreateDirectory(outputPath);
            }

            #region Add common header and footer
            if (AddCommonHeaderFooter(document))
            {
                Console.WriteLine("Add common header and footer succeeded.\n");
            }
            else
            {
                Console.WriteLine("Add common header and footer failed.\n");
            }
            Console.WriteLine();
            #endregion

            #region Add page header and footer 
            if (AddPageHeaderFooter(document))
            {
                Console.WriteLine("Add page header and footer succeeded.\n");
            }
            else
            {
                Console.WriteLine("Add page header and footer failed.\n");
            }
            Console.WriteLine();
            #endregion

            #region Edit header and footer 
            if (EditHeaderFooter(document))
            {
                Console.WriteLine("Edit header and footer succeeded.\n");
            }
            else
            {
                Console.WriteLine("Edit header and footer failed.\n");
            }
            Console.WriteLine();
            #endregion

            #region Delete header and footer 
            if (DeleteHeaderFooter(document))
            {
                Console.WriteLine("Delete header and footer succeeded.\n");
            }
            else
            {
                Console.WriteLine("delete header and footer failed\n");
            }
            Console.WriteLine();
            #endregion

            Console.ReadLine();
        }

        /// <summary>
        /// Follow these steps to add a header and footer in a blank pages file.  
        /// </summary>
        /// <param name="document">Documents that require manipulation</param>
        private static bool AddCommonHeaderFooter(CPDFDocument document)
        {

            // Init HeaderFooter
            CPDFHeaderFooter headerFooter = document.GetHeaderFooter();
            // Set Text: 1
            headerFooter.SetText(0, "ComPDFKit");
            // Set page index: all the page
            headerFooter.SetPages("0-" + (document.PageCount - 1));
            // Set color : red
            byte[] color = { 255, 0, 0 };
            headerFooter.SetTextColor(0, color);
            // Set font size : 14
            headerFooter.SetFontSize(0, 14);
            // Update HeaderFooter
            headerFooter.Update();

            // Save to pointed path so you can observe the effect.
            string addHeaderFooterPath = outputPath + "\\Blank Page_AddCommonHeaderFooter.pdf";

            if (document.WriteToFilePath(addHeaderFooterPath))
            {
                Console.WriteLine("Browse the changed file in " + addHeaderFooterPath);
                return true;
            }
            else
            {
                return false;
            }
        }

        private static bool AddPageHeaderFooter(CPDFDocument document)
        {
            // Init HeaderFooter
            CPDFHeaderFooter headerFooter = document.GetHeaderFooter();
            // Set Text: 1
            headerFooter.SetText(0, "<<1,2>>");
            // Set page index: all the page
            headerFooter.SetPages("0-" + (document.PageCount - 1));
            // Set color : red
            byte[] color = { 255, 0, 0 };
            headerFooter.SetTextColor(0, color);
            // Set font size : 14
            headerFooter.SetFontSize(0, 14);
            // Update HeaderFooter
            headerFooter.Update();

            // Save to pointed path so you can observe the effect.
            string addHeaderFooterPath = outputPath + "\\Blank Page_AddPageHeaderFooter.pdf";

            if (document.WriteToFilePath(addHeaderFooterPath))
            {
                Console.WriteLine("Browse the changed file in " + addHeaderFooterPath);
                return true;
            }
            else
            {
                return false;
            }
        }

        /// <summary>
        ///  Follow these steps to delete a header and footer in a blank pages file.  
        /// </summary>
        /// <param name="document">Documents that require manipulation</param>
        private static bool EditHeaderFooter(CPDFDocument document)
        {
            CPDFHeaderFooter headerFooter = document.GetHeaderFooter();

            if (headerFooter.GetText(0) != string.Empty)
            {
                Console.WriteLine("Get head and footer 0 succeeded, text is {0}", headerFooter.GetText(0));
            }
            else
            {
                Console.WriteLine("Get head and footer 0 failed");
                return false;
            }
          
            headerFooter.SetText(0, "PDF SDK");

            headerFooter.Update();

            string editHeaderFooterPath = outputPath + "\\Blank Page_EditHeaderFooter.pdf";

            if (document.WriteToFilePath(editHeaderFooterPath))
            {
                Console.WriteLine("Browse the changed file in " + editHeaderFooterPath);
                return true;
            }
            else
            {
                return false;
            }
        }

        private static bool DeleteHeaderFooter(CPDFDocument document)
        {
            CPDFHeaderFooter headerFooter = document.GetHeaderFooter();
    
            headerFooter.Clear();
            //headerFooter.Update();
            var str = headerFooter.GetText(0);

            if (headerFooter.GetText(0) != string.Empty)
            {
                Console.WriteLine("Delete failed");

            } 

            string deleteHeaderFooterPath = outputPath + "\\Blank Page_DeleteHeaderFooter.pdf";

            if (document.WriteToFilePath(deleteHeaderFooterPath))
            {
                Console.WriteLine("Browse the changed file in " + deleteHeaderFooterPath);
                return true;
            }
            else
            {
                return false;
            }
        }
    }
}