// 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 convert images to PDF files.

const FSDK = require("@fuxinsoft/foxit-pdf-sdk-node");
const fs = require('fs');
const os = require('os');
const path = require('path');
const util = require('util');

var sn = "Rew1vB0TqoMIxX444UcpScARWdhgJpsJfzmyMLR32a0+EgrCjp2NaQ==";
var key = "8f3g1sFttW8NAgfSNv+BvaJWy4Pp8flcm7ncNDkdvCCO4JwUFbGLyZdujReMaiplbYJwwxam3lr7uHtQaEf0xTSu8j2ZBdrZ8FS4OQkEUjOI9UEGb3Ic0GqmlP9T9OnSItOYqoZZA/OnYg5EaVP+c/ha32nUquOk+5riEdhYgINAZDdgJkPc+YSWsrfixOIROf6t34j3eRcyFnOY0MS7tSXi1AEPE0VZdyu+5bfmBSGvLI+WR5lQ+oOQR5hRGwqf990WEdBelNO7dxhZELVhEZ+/L60PpDf5y9A8qmrY6PiEU8nhqIyLpks0BxeIsYyZ3Cr82jjfbItPGyEARsIVzluBSgVMD4oGjojz8T6wGDEXUbmZH/pra94XAs8wZ28mzbmIEppWnhBqX0c6Ov8iXCfFfUZr4KNuPxMEgk4VOYTMOd70GEjGnylivw18hbn7ZpkWh2Zql+uU2HejvOgn+WHvT0HF9NhK0Xb5vH8aFkgBP92PJx8obIbxBVeeExczxvsqWufuPdXS2sPNIgMYZ2TtvqVVsiUToeGB2FQo09fzZOSH5Vi18u/siyvC3FmjeMf4+OYWPuDPNCcrb21NgcHam7XI8AAoGLTGtLLWR+fxynbBBcg2d2ZPcZ5CMFIfOBHRWCkcA0sDT3cl9nsBppHNJze/jVxHy+lREeQEA/etSIgohTGAWW3ZlpibRXqMxlmVWEPifCubbWTzQ6U54mRMpW2UghH3gvCNFNgdday3Av7EtlIJOdUuiMq3zmmd5J4Jt4C82CKnVewA0DtZ4EEtwRG9IYuLrfpuZlnjBAtoeXRV1lqUZ6BcCe0E3m9jO28sGkALuIeJQ74XG7X8lMC7lMWWQYiYD7D6G9QT6X3qV4vXJwNKRKpYc/rI+amEawTSnDYAMEaYPwtZ0rb/7BL+atsZZaI+ncebdfVfjDJZbCZAc+JnkuNlUn2xrNRuObw8h/G0lm2pNOEJ10S8R4+yplo5B1QmC2dCDhaTaW67QJPqnJPKbVmjw7i6KGBi+CDP3JnAKlOX/YUu8uk56JfeQUuGcQg/KaBMGctnchH2n1i3+oGbibhurQj22+OO66Q6mijKoCRP/QJm5WTGcO4c0iVX0B8dIlai/uv/pGU8Wps9MxysH5ViVIj56LWKuNfy1FNO9+wx4iHYnUxfW0Iccq3YJYAlOBkMv8VZIJl9aTEEFJ626LJEw/UbEBdR9CdlwnylPf4RuNW/lcGYMgq3xNVpp/bzYKwZivvQOFgMdX1tv8D33SHvAm3zrRCU+v94BJXnBi9k25fnKsc705IMwv+I6bueXA+mDnagj1oTqsWXZ0WnPAYI3WUO7sBf7XUH230wfYXnTSVhujJxiEP/2oWqi2813gtQkKwz9N2p6yT8Vsh3+BaAwwDvtOZMJKUFcabTBSL6NoouzmzwItJ4mIboT6KXaef66rs8jCU=";

const input_path = "../input_files/";
const output_path = "../output_files/";

class FileWriter {
  constructor() {
    this.m_fileFP = null;
    this.file_path_ = "";
  }

  LoadFile(file_path) {
    try {
      this.file_path_ = file_path;
      this.m_fileFP = fs.openSync(file_path, 'w');
      if (!this.m_fileFP) {
        return false;
      }
      return true;
    } catch (err) {
      console.error(err);
      return false;
    }
  }

  GetSize() {
    try {
      let stats = fs.statSync(this.file_path_);
      return stats.size;
    } catch (err) {
      console.error(err);
      return 0;
    }
  }

  Flush() {
    return true;  
  }

  WriteBlock(buffer, offset, size) { 
    try {
      const write_size = fs.writeSync(this.m_fileFP, buffer, 0, size, offset);
      if (write_size == size) {
        return true;
      } else {
        return false;
      }
    } catch (err) {
      console.error(err);
      return false;
    }
  }

  Release() {
    try {
      fs.closeSync(this.m_fileFP);
      this.m_fileFP = null;
    } catch (err) {
      console.error(err);

    }
  }
}

class FileRead {
  constructor() {
    this.file_ = null;
    this.file_path_ = "";
    this.hint_data_record_ = [];
  }

  LoadFile(file_path) {
    try {
      this.file_path_ = file_path;
      this.file_ = fs.openSync(file_path, 'r');
      return true;
    } catch (err) {
      console.error(err);
      return false;
    }
  }

  CloseFile() {
    fs.closeSync(this.file_);
  }

  GetSize() {
    try {
      let stats = fs.statSync(this.file_path_);
      return stats.size;
    } catch (err) {
      console.error(err);
      return 0;
    }
  }

  ReadBlock(offset, size_t) {
    try {
      let buffer = Buffer.alloc(size_t);
      fs.readSync(this.file_, buffer, 0, size_t, offset);      
      return [true, buffer]
    } catch (err) {
      return [false, null];
    }
  }

  Release() {  }
}


function Image2PDF(input_file, output_file)
{
  let image = new FSDK.Image(input_file);
  let count = 1;
  if (image.GetType() != FSDK.Image.e_JBIG2) {
    count = image.GetFrameCount();
  }  
  let doc = new FSDK.PDFDoc();
  for (let i = 0; i < count; i++) {
    page = doc.InsertPage(i, image.GetWidth(), image.GetHeight());
    page.StartParse(FSDK.PDFPage.e_ParsePageNormal, null, false);
    // Add image to page
    page.AddImage(image, i, new FSDK.PointF(0, 0), image.GetWidth(), image.GetHeight(), true);
  }
  doc.SaveAs(output_file, FSDK.PDFDoc.e_SaveFlagNoOriginal);

}

function FromImageWithPath(input_file, output_file)
{
  try {
    FSDK.Convert.FromImage(input_file, output_file);
  }
  catch (e) {
    console.log(e);
  }
}

function FromImageWithCallback(reader, writer)
{
  try {
    FSDK.Convert.FromImage(reader, writer);
  }
  catch (e) {
    console.log(e);
  }
}

let error_code = FSDK.Library.Initialize(sn, key);
if (FSDK.e_ErrSuccess != error_code) {
  if (FSDK.e_ErrInvalidLicense == error_code)
    console.log("[Failed] Current used Foxit PDF SDK key information is invalid.");
  else
    console.log("Library Initialize Error: %d", FSDK.e_ErrSuccess);
  return;
}

let output_directory = output_path + "image2pdf/";
if (!fs.existsSync(output_directory))  {
  fs.mkdirSync(output_directory);
}


try {
  {
    // Convert .bmp file to PDF document.
    let input_file = input_path + "watermark.bmp";
    let output_file = output_directory + "watermark_bmp.pdf";
    Image2PDF(input_file,output_file);
    console.log("Convert BMP file to PDF file.");
  }
  {
    // Convert .jpg file to PDF document.
    let input_file = input_path + "image_samples.jpg";
    let output_file = output_directory + "image_samples_jpg.pdf";
    Image2PDF(input_file,output_file);
    console.log("Convert JPG file to PDF file.");
  }
  {
    // Convert .tif file to PDF document.
    let input_file = input_path + "TIF2Pages.tif";
    let output_file = output_directory + "TIF2Pages_tif.pdf";
    Image2PDF(input_file,output_file);
    console.log("Convert TIF file to PDF file.");
  }
  {
    // Convert .gif file to PDF document.
    let input_file = input_path + "image005.gif";
    let output_file = output_directory + "image005_gif.pdf";
    Image2PDF(input_file,output_file);
    console.log("Convert GIF file to PDF file.");
  }
  {
    // Convert .png file to PDF document.
    let input_file = input_path + "1.png";
    let output_file = output_directory + "1_png.pdf";
    Image2PDF(input_file, output_file);
    console.log("Convert PNG file to PDF file.");
  }
  {
    // Convert .jb2 file to PDF document.
    let input_file = input_path + "STR_039.jb2";
    let output_file = output_directory + "STR_039_jb2.pdf";
    Image2PDF(input_file, output_file);
    console.log("Convert JB2 file to PDF file.");
  }
  {
    // Convert .jp2 file to PDF document.
    let input_file = input_path + "1.jp2";
    let output_file = output_directory + "1_jp2.pdf";
    Image2PDF(input_file, output_file);
    console.log("Convert JP2 file to PDF file.");
  }
  {
    // Convert .jpx file to PDF document.
    let input_file = input_path + "1.jpx";
    let output_file = output_directory + "1_jpx.pdf";
    Image2PDF(input_file, output_file);
    console.log("Convert JPX file to PDF file.");
  }

} catch (e) {
  console.log(e);
}

// Convert from filepath
try {
  console.log("Start: convert file from file path.");
  {
    // Convert .bmp file to PDF document.
    let input_file = input_path + "watermark.bmp";
    let output_file = output_directory + "watermark_bmp_frompath.pdf";
    FromImageWithPath(input_file, output_file);
    console.log("Convert BMP file to PDF file.");
  }
  {
    // Convert .jpg file to PDF document.
    let input_file = input_path + "image_samples.jpg";
    let output_file = output_directory + "image_samples_jpg_frompath.pdf";
    FromImageWithPath(input_file, output_file);
    console.log("Convert JPG file to PDF file.");
  }
  {
    // Convert .tif file to PDF document.
    let input_file = input_path + "TIF2Pages.tif";
    let output_file = output_directory + "TIF2Pages_tif_frompath.pdf";
    FromImageWithPath(input_file, output_file);
    console.log("Convert TIF file to PDF file.");
  }
  {
    // Convert .gif file to PDF document.
    let input_file = input_path + "image005.gif";
    let output_file = output_directory + "image005_gif_frompath.pdf";
    FromImageWithPath(input_file, output_file);
    console.log("Convert GIF file to PDF file.");
  }
  {
    // Convert .png file to PDF document.
    let input_file = input_path + "1.png";
    let output_file = output_directory + "1_png_frompath.pdf";
    FromImageWithPath(input_file, output_file);
    console.log("Convert PNG file to PDF file.");
  }
  {
    // Convert .jb2 file to PDF document.
    let input_file = input_path + "STR_039.jb2";
    let output_file = output_directory + "STR_039_jb2_frompath.pdf";
    FromImageWithPath(input_file, output_file);
    console.log("Convert JB2 file to PDF file.");
  }
  {
    // Convert .jp2 file to PDF document.
    let input_file = input_path + "1.jp2";
    let output_file = output_directory + "1_jp2_frompath.pdf";
    FromImageWithPath(input_file, output_file);
    console.log("Convert JP2 file to PDF file.");
  }
  {
    // Convert .jpx file to PDF document.
    let input_file = input_path + "1.jpx";
    let output_file = output_directory + "1_jpx_frompath.pdf";
    FromImageWithPath(input_file, output_file);
    console.log("Convert JPX file to PDF file.");
  }
  console.log("End: convert file from file path.");
}
catch (e) {
  console.log(e);
  err_ret = 1;
}

// Convert from stream
try {
  console.log("Start: convert file from stream.");
  {
    // Convert .bmp file to PDF document.
    let input_file = input_path + "watermark.bmp";
    let filereader = new FileRead();
    filereader.LoadFile(input_file);
    let reader_callback = new FSDK.FileReaderCallback(filereader);
    let output_file = output_directory + "watermark_bmp_stream.pdf";
    let filewriter = new FileWriter();
    filewriter.LoadFile(output_file);
    let writer_callback = new FSDK.FileWriterCallback(filewriter);
    FromImageWithCallback(reader_callback, writer_callback);
    console.log("Convert BMP file to PDF file.");
  }
  {
    // Convert .jpg file to PDF document.
    let input_file = input_path + "image_samples.jpg";
    let filereader = new FileRead();
    filereader.LoadFile(input_file);
    let reader_callback = new FSDK.FileReaderCallback(filereader);
    let output_file = output_directory + "image_samples_jpg_stream.pdf";
    let filewriter = new FileWriter();
    filewriter.LoadFile(output_file);
    let writer_callback = new FSDK.FileWriterCallback(filewriter);
    FromImageWithCallback(reader_callback, writer_callback);
    console.log("Convert JPG file to PDF file.");
  }
  {
    // Convert .tif file to PDF document.
    let input_file = input_path + "TIF2Pages.tif";
    let filereader = new FileRead();
    filereader.LoadFile(input_file);
    let reader_callback = new FSDK.FileReaderCallback(filereader);
    let output_file = output_directory + "TIF2Pages_tif_stream.pdf";
    let filewriter = new FileWriter();
    filewriter.LoadFile(output_file);
    let writer_callback = new FSDK.FileWriterCallback(filewriter);
    FromImageWithCallback(reader_callback, writer_callback);
    console.log("Convert TIF file to PDF file.");
  }
  {
    // Convert .gif file to PDF document.
    let input_file = input_path + "image005.gif";
    let filereader = new FileRead();
    filereader.LoadFile(input_file);
    let reader_callback = new FSDK.FileReaderCallback(filereader);
    let output_file = output_directory + "image005_gif_stream.pdf";
    let filewriter = new FileWriter();
    filewriter.LoadFile(output_file);
    let writer_callback = new FSDK.FileWriterCallback(filewriter);
    FromImageWithCallback(reader_callback, writer_callback);
    console.log("Convert GIF file to PDF file.");
  }
  {
    // Convert .png file to PDF document.
    let input_file = input_path + "1.png";
    let filereader = new FileRead();
    filereader.LoadFile(input_file);
    let reader_callback = new FSDK.FileReaderCallback(filereader);
    let output_file = output_directory + "1_png_stream.pdf";
    let filewriter = new FileWriter();
    filewriter.LoadFile(output_file);
    let writer_callback = new FSDK.FileWriterCallback(filewriter);
    FromImageWithCallback(reader_callback, writer_callback);
    console.log("Convert PNG file to PDF file.");
  }

  {
    // Convert .jb2 file to PDF document.
    let input_file = input_path + "STR_039.jb2";
    let filereader = new FileRead();
    filereader.LoadFile(input_file);
    let reader_callback = new FSDK.FileReaderCallback(filereader);
    let output_file = output_directory + "STR_039_jb2_stream.pdf";
    let filewriter = new FileWriter();
    filewriter.LoadFile(output_file);
    let writer_callback = new FSDK.FileWriterCallback(filewriter);
    FromImageWithCallback(reader_callback, writer_callback);
    console.log("Convert JB2 file to PDF file.");
  }

  {
    // Convert .jp2 file to PDF document.
    let input_file = input_path + "1.jp2";
    let filereader = new FileRead();
    filereader.LoadFile(input_file);
    let reader_callback = new FSDK.FileReaderCallback(filereader);
    let output_file = output_directory + "1_jp2_stream.pdf";
    let filewriter = new FileWriter();
    filewriter.LoadFile(output_file);
    let writer_callback = new FSDK.FileWriterCallback(filewriter);
    FromImageWithCallback(reader_callback, writer_callback);
    console.log("Convert JP2 file to PDF file.");
  }
  {
    // Convert .jpx file to PDF document.
    let input_file = input_path + "1.jpx";
    let filereader = new FileRead();
    filereader.LoadFile(input_file);
    let reader_callback = new FSDK.FileReaderCallback(filereader);
    let output_file = output_directory + "1_jpx_stream.pdf";
    let filewriter = new FileWriter();
    filewriter.LoadFile(output_file);
    let writer_callback = new FSDK.FileWriterCallback(filewriter);
    FromImageWithCallback(reader_callback, writer_callback);
    console.log("Convert JPX file to PDF file.");
  }
  console.log("End: convert file from  stream.");
}
catch (e) {
  console.log(e);
}
FSDK.Library.Release();