// 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 operate PDF objects directly.


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

var sn = "bPxThFlBAYifO3yiW0C51bKbjPap1zHaf5aG5sX378TjFvB7Q0802A==";
var key = "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";

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

// This function is to do some operation to PDF object.
function ObjectOperation(document) {
  let boolean_object = FSDK.PDFObject.CreateFromBoolean(true);
  let boolean_object_number= document.AddIndirectObject(boolean_object);

  console.log("Object number of new boolean object:  %s ", boolean_object_number.toString());

  let boolean_object_value = boolean_object.GetBoolean();
  console.log("\tValue of new boolean object: %s\r\n", boolean_object_value ? "true":"false");

  let float_object = FSDK.PDFObject.CreateFromFloat(0.1);
  let float_object_number= document.AddIndirectObject(float_object);
  console.log("Object number of new number object (as float):  %s ", float_object_number.toString());
  let float_object_value = float_object.GetFloat();
  console.log("\tValue of new number object (as float): %f", float_object_value);

  let integer_object = FSDK.PDFObject.CreateFromInteger(1);
  let integer_object_number= document.AddIndirectObject(integer_object);
  console.log("Object number of new number object (as integer): %s ", integer_object_number.toString());
  let integer_object_value = integer_object.GetInteger();
  console.log("\tValue of new number object (as integer): %d", integer_object_value);

  let string_object = FSDK.PDFObject.CreateFromString("foxit");
  let string_object_number= document.AddIndirectObject(string_object);
  console.log("Object number of new string object: %s ", string_object_number.toString());
  let string_object_value = string_object.GetWideString();
  console.log("\tValue of new string object: %s", string_object_value);

  let name_object = FSDK.PDFObject.CreateFromName("sdk");
  let name_object_number= document.AddIndirectObject(name_object);
  console.log("Object number of new name object: %s ", name_object_number.toString());
  let name_object_value = name_object.GetName();
  console.log("\tValue of new name object: %s\r\n", name_object_value);

  let date_time = new FSDK.DateTime(2017, 9, 27, 19, 36, 6, 0, 8, 0);
  let datetime_object = FSDK.PDFObject.CreateFromDateTime(date_time);
  let datetime_object_number= document.AddIndirectObject(datetime_object);
  console.log("Object number of new string object (as date-time):  %s ", datetime_object_number.toString());
  let datetime_object_value = datetime_object.GetWideString();
  console.log("\tValue of new string object (as date-time): %s", datetime_object_value);

  let array = FSDK.PDFArray.Create();
  let boolean_object_reference = FSDK.PDFObject.CreateReference(document, boolean_object_number);
  let boolean_object_reference_number = boolean_object_reference.GetObjNum();
  console.log("Object number of a new reference object to a boolean object: %s ", boolean_object_reference_number.toString());
  let float_object_reference = FSDK.PDFObject.CreateReference(document, float_object_number);
  let integer_object_reference = FSDK.PDFObject.CreateReference(document, integer_object_number);
  let integer_object_direct = integer_object_reference.GetDirectObject();
  console.log("Object number of the direct number object:  %s ", integer_object_direct.GetObjNum().toString());
  let string_object_reference = FSDK.PDFObject.CreateReference(document, string_object_number);
  let name_object_reference = FSDK.PDFObject.CreateReference(document, name_object_number);
  let datetime_object_reference = FSDK.PDFObject.CreateReference(document, datetime_object_number);

  array.AddElement(boolean_object_reference);
  array.AddElement(float_object_reference);
  array.AddElement(integer_object_reference);
  array.AddElement(string_object_reference);
  array.AddElement(name_object_reference);
  array.AddElement(datetime_object_reference);
  array.AddElement(boolean_object.CloneObject());

  let array_object_number = document.AddIndirectObject(array);
  console.log("Object number of array object:  %s ", array_object_number.toString());
}

// This function is to remove some properties from catalog dictionary.
function RemoveCatalogKey(document) {
  if (document.IsEmpty()) return;

  let catalog = document.GetCatalog();
  if (null == catalog) return;

  let key_strings = [ "Type", "Boolean", "Name", "String", "Array", "Dict"];
  let count = key_strings.length;
  for (let i = 0; i < count; i ++) {
    if (catalog.HasKey(key_strings[i]))
      catalog.RemoveAt(key_strings[i]);
  }
}

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 + "pdfobjects/";
if (!fs.existsSync(output_directory))  {
  fs.mkdirSync(output_directory);
}

let input_file = input_path + "pdfobjects.pdf";
try {
  let doc = new FSDK.PDFDoc(input_file);
  doc.StartLoad("", false, null);

  // Do some operation about PDF object.
  ObjectOperation(doc);
  let save_pdf_patth = output_directory + "pdfobjects_addnewobjects.pdf";
  doc.StartSaveAs(save_pdf_patth, FSDK.PDFDoc.e_SaveFlagNoOriginal, null);

  // To remove some properties from catalog dictionary.
  RemoveCatalogKey(doc);
  save_pdf_patth = output_directory + "pdfobjects_removekeyfromcatalog.pdf";
  doc.StartSaveAs(save_pdf_patth, FSDK.PDFDoc.e_SaveFlagNoOriginal, null);

} catch (e) {
  console.log(e);
}
FSDK.Library.Release();

