// 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 associate files with PDF.

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

var sn = "Rew1vB0TqoMIxX444UcpScARWdhgJpsJfzmyMLR32a0+EgrCjp2NaQ==";
var key = "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";

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

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

let input_file = input_path + "AF_Catalog_Page_Annot.pdf";
try {
  let doc = new FSDK.PDFDoc(input_file);
  let error_code = doc.Load("");
  if (error_code != FSDK.e_ErrSuccess) {
    console.log("The Doc [%s] Error: %d", input_file, error_code);
    return 1;
  }

  let associated_files = new FSDK.AssociatedFiles(doc)  
  let doc_catalog_dict = doc.GetCatalog();
  let count = associated_files.GetAssociatedFilesCount(doc_catalog_dict);
  console.log("The catalog dictionary of \"AF_Catalog_Page_Annot.pdf\" has %d associated files.", count);
  let filespec = associated_files.GetAssociatedFile(doc_catalog_dict, 0);
  console.log("The file name is \"%s\".\n", filespec.GetFileName());
  filespec.ExportToFile(output_directory + "af_1.txt");

  let page = doc.GetPage(0);
  let page_dict = page.GetDict();
  count = associated_files.GetAssociatedFilesCount(page_dict);
  console.log("The page dictionary of \"AF_Catalog_Page_Annot.pdf\" has %d associated files.n", count);
  filespec = associated_files.GetAssociatedFile(page_dict, 0);
  console.log("The file name is \"%s\".\n", filespec.GetFileName());
  filespec.ExportToFile(output_directory + "af_2.txt");

  let annot = page.GetAnnot(0);
  let annot_dict = annot.GetDict();
  count = associated_files.GetAssociatedFilesCount(annot_dict);
  console.log("The annot dictionary of \"AF_Catalog_Page_Annot.pdf\" has %d associated files.", count);
  filespec = associated_files.GetAssociatedFile(annot_dict, 0);
  console.log("The file name is \"%s\".\n",filespec.GetFileName());
  filespec.ExportToFile(output_directory + "af_4.txt");
} catch (e) {
  console.log(e); 
}

input_file = input_path + "AF_ImageXObject_FormXObject.pdf";
try {
  let doc = new FSDK.PDFDoc(input_file);
  let error_code = doc.Load("");
  if (error_code != FSDK.e_ErrSuccess) {
    console.log("The Doc [%s] Error: %d", input_file, error_code);
    return 1;
  }

  let associated_files = new FSDK.AssociatedFiles(doc);
  let page = doc.GetPage(0);
  page.StartParse(FSDK.PDFPage.e_ParsePageNormal, null, false);
  let pos = page.GetFirstGraphicsObjectPosition(FSDK.GraphicsObject.e_TypeImage);
  let image_x_object = page.GetGraphicsObject(pos);
  
  let image_x_object_dict = image_x_object.GetImageObject().GetStream().GetDictionary();
  let count = associated_files.GetAssociatedFilesCount(image_x_object_dict);
  console.log("The image x object of \"AF_ImageXObject_FormXObject.pdf\" has %d associated files.", count);
  let filespec = associated_files.GetAssociatedFile(image_x_object_dict, 0);
  console.log("The file name is \"%s\".\n", filespec.GetFileName());
  filespec.ExportToFile(output_directory + "2.jpg");

  pos = page.GetFirstGraphicsObjectPosition(FSDK.GraphicsObject.e_TypeFormXObject);
  let form_x_object = page.GetGraphicsObject(pos);
  let form_x_object_dict = form_x_object.GetFormXObject().GetStream().GetDictionary();
  count = associated_files.GetAssociatedFilesCount(form_x_object_dict);
  console.log("The form x object of \"AF_ImageXObject_FormXObject.pdf\" has %d associated files.", count);
  filespec = associated_files.GetAssociatedFile(form_x_object_dict, 0);
  console.log("The file name is \"%s\".\n", filespec.GetFileName());
  filespec.ExportToFile(output_directory + "af_6.txt");
} catch (e) {
  console.log(e); 
}

input_file = input_path + "AF_MarkedContent.pdf";
try {
  let doc = new FSDK.PDFDoc(input_file);
  let error_code = doc.Load("");
  if (error_code != FSDK.e_ErrSuccess) {
    console.log("The Doc [%s] Error: %d", input_file, error_code);
    return 1;
  }

  let associated_files = new FSDK.AssociatedFiles(doc);

  let page = doc.GetPage(0);
  page.StartParse(FSDK.PDFPage.e_ParsePageNormal, null, false);

  let pos = page.GetFirstGraphicsObjectPosition(FSDK.GraphicsObject.e_TypeText);
  let text_object = page.GetGraphicsObject(pos);
  let count = associated_files.GetAssociatedFilesCount(text_object);
  console.log("The text object of \"AF_MarkedContent.pdf\" has %d associated files.", count);
  let filespec = associated_files.GetAssociatedFile(text_object, 0);
  console.log("The first file name is \"%s\".", filespec.GetFileName());
  filespec.ExportToFile(output_directory + "bitmap.bmp");

  filespec = associated_files.GetAssociatedFile(text_object, 1);
  console.log("The second file name is \"%s\".\n", filespec.GetFileName());
  filespec.ExportToFile(output_directory + "text.txt");
} catch (e) {
  console.log(e); 
}


// Associate files with objects in PDF document.
input_file = input_path + "AssociateTestFile.pdf";
try{
  let doc = new FSDK.PDFDoc(input_file);
  let error_code = doc.Load("");
  if (error_code != FSDK.e_ErrSuccess) {
    console.log("The Doc [%s] Error: %d", input_file, error_code);
    return 1;
  }

  let associated_files = new FSDK.AssociatedFiles(doc);

  //Create filespec with 1.txt
  let filespec_txt = new FSDK.FileSpec(doc);
  filespec_txt.SetAssociteFileRelationship(FSDK.AssociatedFiles.e_RelationshipSource);
  filespec_txt.SetFileName("1.txt");
  let dateTime = new FSDK.DateTime(2017, 9, 15, 17, 20, 20, 0, 8, 0);
  filespec_txt.SetDescription("text");
  filespec_txt.Embed(input_path +  "1.txt");
  filespec_txt.SetCreationDateTime(dateTime);
  filespec_txt.SetModifiedDateTime(dateTime);
  filespec_txt.SetSubtype("application/octet-stream");

  //Associate 1.txt with catalog dictionary.
  {
    let catalog_dict = doc.GetCatalog();
    associated_files.AssociateFile(catalog_dict, filespec_txt);
    console.log("Associate a text file with catalog dictionary.");
    let filespec_catalog = associated_files.GetAssociatedFile(catalog_dict, 0);
    filespec_catalog.ExportToFile(output_directory + "catalog.txt");
  }

  var page = doc.GetPage(0);  
  page.StartParse(FSDK.PDFPage.e_ParsePageNormal, null, false);
  
  //Associate 1.txt with page dictionary.
  {
    associated_files.AssociateFile(page, filespec_txt);
    console.log("Associate a text file with page.");

    let filespec_page = associated_files.GetAssociatedFile(page.GetDict(), 0);
    filespec_page.ExportToFile(output_directory + "page.txt");
  }

  //Associate 1.txt with annotation dictionary.
  {
    let rect = new FSDK.RectF(100, 50, 220, 100);
    let annot = page.AddAnnot(FSDK.Annot.e_Note, rect);
    annot.ResetAppearanceStream();
    associated_files.AssociateFile(annot, filespec_txt);
    console.log("Associate a text file with annotation.");
    let filespec_annot = associated_files.GetAssociatedFile(annot.GetDict(), 0);
    filespec_annot.ExportToFile(output_directory + "annotation.txt");
  }

  //Create filespec with 2.jpg image.
  let filespec_jpg = new FSDK.FileSpec(doc);
  filespec_jpg.SetAssociteFileRelationship(FSDK.AssociatedFiles.e_RelationshipSource);
  filespec_jpg.SetFileName("2.jpg");
  filespec_jpg.SetDescription("jpeg");
  filespec_jpg.Embed(input_path +  "2.jpg");
  filespec_jpg.SetCreationDateTime(dateTime);
  filespec_jpg.SetModifiedDateTime(dateTime);
  filespec_jpg.SetSubtype("application/octet-stream");

  //Associate 2.jpg with marked content.
  {
    let page_dict = page.GetDict();
    let resource_dict = page_dict.GetElement("Resources");
    if (!resource_dict) return 1;

    let position = page.GetFirstGraphicsObjectPosition(FSDK.GraphicsObject.e_TypeText);
    let text_object = page.GetGraphicsObject(position);
    if (text_object) {
      let markcontent = text_object.GetMarkedContent();
      if (!markcontent) return 1;

      if (markcontent.GetItemCount() == 0) {
        markcontent.AddItem("Associated", null);
      }
      associated_files.AssociateFile(text_object, 0, resource_dict, "textobject", filespec_jpg);
      page.GenerateContent();

      console.log("Associate a jpeg file with markcontent.");

      let filespec_text_object = associated_files.GetAssociatedFile(text_object, 0);
      filespec_text_object.ExportToFile(output_directory + "textobject.jpg");
    }
  }

  //Associate 2.jpg with image object.
  {
    let position = page.GetFirstGraphicsObjectPosition(FSDK.GraphicsObject.e_TypeImage);
    let image_oject = page.GetGraphicsObject(position).GetImageObject();
    if (image_oject) {
      associated_files.AssociateFile(image_oject, filespec_jpg);
      console.log("Associate a jpeg file with image xobject.");

      let filespec_image_oject = associated_files.GetAssociatedFile(image_oject.GetStream().GetDictionary(), 0);
      filespec_image_oject.ExportToFile(output_directory + "image_x_object.jpg");
    }
  }

  //Associate 2.jpg with form XObject.
  {
    let position = page.GetFirstGraphicsObjectPosition(FSDK.GraphicsObject.e_TypeFormXObject);
    let form_x_object = page.GetGraphicsObject(position).GetFormXObject();
    if (form_x_object) {
      associated_files.AssociateFile(form_x_object, filespec_jpg);
      console.log("Associate a jpeg file with form xobject.");

      let filespec_form_x_object = associated_files.GetAssociatedFile(form_x_object.GetStream().GetDictionary(), 0);
      filespec_form_x_object.ExportToFile(output_directory + "form_x_object.jpg");
    }
  }

  // Save PDF file
  let newPdf = output_directory + "associated_files.pdf";
  doc.SaveAs(newPdf, FSDK.PDFDoc.e_SaveFlagNoOriginal);
} catch (e) {
  console.log(e); 
}

FSDK.Library.Release();