// Copyright (C) 2003-2026, Foxit Software Inc..
// All Rights Reserved.
//
// http://www.foxitsoftware.com
//
// The following code is copyrighted and contains proprietary information and trade secrets of Foxit Software Inc..
// You cannot distribute any part of Foxit PDF SDK to any third party or general public,
// unless there is a separate license agreement with Foxit Software Inc. which explicitly grants you such rights.
//
// This file contains an example to demonstrate how to use Foxit PDF SDK to get/set page label information
// in a PDF document.

using System;
using System.IO;

using foxit;
using foxit.common;
using foxit.common.fxcrt;
using foxit.pdf;


namespace page_labelsCS
{
    class page_labels
    {

        static String StyleCodeToString(PageLabels.Style style)
        {
            switch (style)
            {
                case PageLabels.Style.e_None:
                    {
                        return "None";
                    }
                case PageLabels.Style.e_DecimalNums:
                    {
                        return "DecimalNums";
                    }
                case PageLabels.Style.e_UpperRomanNums:
                    {
                        return "UpperRomanNums";
                    }
                case PageLabels.Style.e_LowerRomanNums:
                    {
                        return "LowerRomanNums";
                    }
                case PageLabels.Style.e_UpperLetters:
                    {
                        return "UpperLetters";
                    }
                case PageLabels.Style.e_LowerLetters:
                    {
                        return "LowerLetters";
                    }
            }
            return "";
        }

        static void ShowPageLabelsInfo(PDFDoc doc, String text_doc_path)
        {
            try
            {
                FileStream sfile = new FileStream(text_doc_path, FileMode.OpenOrCreate);
                StreamWriter sw = new StreamWriter(sfile);
                using (PageLabels page_labels = new PageLabels(doc))
                {
                    int count = doc.GetPageCount();
                    for (int i = 0; i < count; i++)
                    {
                        System.String title = page_labels.GetPageLabelTitle(i);
                        sw.WriteLine("page index: " + i + "\tstyle: " + StyleCodeToString(page_labels.GetPageLabelStyle(i)) + "\ttitle: " + page_labels.GetPageLabelTitle(i) + "\tprefix: " + page_labels.GetPageLabelPrefix(i));
                    }
                    sw.Close();
                }                                  
            }
            catch (System.Exception e)
            {
                Console.WriteLine(e.Message);
            }
        }

        static void Main(String[] args)
        {
            string input_path = "../input_files/";
            string output_path = "../output_files/page_labels/";
            System.IO.Directory.CreateDirectory(output_path);

            string sn = "Rew1vB0TqoMIxX444UcpScARWdhgJpsJfzmyMLR32a0+EgrCjp2NaQ==";
            string key = "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";
            // Initialize library
            ErrorCode error_code = Library.Initialize(sn, key);
            if (error_code != ErrorCode.e_ErrSuccess)
                Console.WriteLine("Library Initialize Error: {0}\n", error_code);

            try
            {
                // gif file convert to pdf
                string input_file = input_path + "page_labels.pdf";
                using (PDFDoc doc = new PDFDoc(input_file))
                {
                    error_code = doc.Load(null);
                    if (error_code != ErrorCode.e_ErrSuccess)
                    {
                        Console.WriteLine("The PDFDoc " + input_file + " Error: " + error_code);
                        Library.Release();
                        return;
                    }
                    String text_path = output_path + "page_labels_original_page_labels_info.txt";
                    ShowPageLabelsInfo(doc, text_path);

                    // Add new page labels
                    using (PageLabels page_labels = new PageLabels(doc))
                    {
                        page_labels.RemoveAll();
                        String pdf_removeall = output_path + "removeall_page_labels.pdf";
                        doc.SaveAs(pdf_removeall, (int)PDFDoc.SaveFlags.e_SaveFlagNoOriginal);

                        int count = doc.GetPageCount();
                        if (count > 0)
                        {
                            page_labels.SetPageLabel(0, PageLabels.Style.e_UpperRomanNums, 1, "Cover-");
                        }
                        if (count > 1)
                        {
                            page_labels.SetPageLabel(1, PageLabels.Style.e_LowerRomanNums, 1, "Catolog-");
                        }
                        if (count > 2)
                        {
                            page_labels.SetPageLabel(2, PageLabels.Style.e_DecimalNums, 1, "Contents-");
                        }
                        if (count > 5)
                        {
                            page_labels.SetPageLabel(count - 1, PageLabels.Style.e_UpperLetters, 1, "Appendix-");
                        }

                        String text_path_new = output_path + "page_labels_new_page_labels_info.txt";
                        ShowPageLabelsInfo(doc, text_path_new);
                        String pdf_new = output_path + "new_page_labels.pdf";
                        doc.SaveAs(pdf_new, (int)PDFDoc.SaveFlags.e_SaveFlagNoOriginal);
                    }                    
                }
                Console.WriteLine("PDFPage label test.");
            }
            catch (System.Exception e)
            {
                Console.WriteLine(e.Message);
            }
            Library.Release();
        }
    }
}
