// 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 is a demo demonstrate how to convert a PDF file to one or multiple image 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 = "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";

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

function Save2Image(bitmap, page_index, sExt, from_memory) {
  // Add the bitmap to image and save the image.
  let image = new FSDK.Image();
  image.AddFrame(bitmap);
  let s;
  if (from_memory) {
    s = `AboutFoxit_from_memory_${page_index}`;
  } else {
    s = `AboutFoxit_${page_index}`;
  }
  s = output_directory + s + sExt;
  image.SaveAs(s);
  console.log("Save page %d  into a picture of %s format %s.", page_index, sExt, from_memory ? " from memory" : "")
}

function PDF2Image(doc, from_memory) {
  let support_image_extends = [".bmp", ".jpg", ".jpeg", ".png", ".jpx", ".jp2"];

  // Get page count
  let page_count = doc.GetPageCount();
  for(let i=0; i<page_count; i++) {
    let page = doc.GetPage(i);
    // Parse page.
    page.StartParse(FSDK.PDFPage.e_ParsePageNormal, null, false);

    let width = page.GetWidth();
    let height = page.GetHeight();
    let matrix = page.GetDisplayMatrix(0, 0, width, height, page.GetRotation());

    // Prepare a bitmap for rendering.
    let bitmap = new FSDK.Bitmap(width, height, FSDK.Bitmap.e_DIBArgb, null, 0);
    bitmap.FillRect(0xFFFFFFFF, null);

    // Render page
    let render = new FSDK.Renderer(bitmap, false);
    render.StartRender(page, matrix, null);
    for(let j=0;j<support_image_extends.length;j++) {
      let extend = support_image_extends[j];
      Save2Image(bitmap,i,extend,from_memory);
    }
  }
}

function SaveTiffImage(doc, from_memory)
{
  let support_multi_image = [ ".tif", ".tiff" ];
  for (let i = 0; i < support_multi_image.length; i++) {
    let s = output_directory + "AboutFoxit";
    if (from_memory) s += "_from_memory";
    s += support_multi_image[i];
    let image = new FSDK.Image();
    let nPageCount = doc.GetPageCount();
    for (let page_index = 0; page_index < nPageCount; page_index++) {
      let page = doc.GetPage(page_index);
      // Parse page.
      page.StartParse(FSDK.PDFPage.e_ParsePageNormal, null, false);

      let width = page.GetWidth();
      let height = page.GetHeight();
      let matrix = page.GetDisplayMatrix(0, 0, width, height, page.GetRotation());

      // Prepare a bitmap for rendering.
      let bitmap = new FSDK.Bitmap(width, height, FSDK.Bitmap.e_DIBArgb, null, 0);
      bitmap.FillRect(0xFFFFFFFF, null);

      // Render page
      let render = new FSDK.Renderer(bitmap, false);
      render.StartRender(page, matrix, null);
      image.AddFrame(bitmap);
    }
    image.SaveAs(s);

    console.log("Save pdf file into a picture of %s format %s.", support_multi_image[i], from_memory ? " from memory" : "");
  }
}


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 + "pdf2image/";
if (!fs.existsSync(output_directory))  {
  fs.mkdirSync(output_directory);
}


let input_file = input_path + "AboutFoxit.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\n", input_file, error_code);
       return;
     }
     PDF2Image(doc, false);
     SaveTiffImage(doc, false);

  }

  {
    console.log("Load document from memory.");
    const data = fs.readFileSync(input_file);
    const file_size = data.length;
    const buffer = Buffer.alloc(file_size);
    data.copy(buffer);
    let doc_memory = new FSDK.PDFDoc(buffer, file_size);
     error_code = doc_memory.Load("");
     if (error_code != FSDK.e_ErrSuccess) {
       console.log("The Doc [%s] Error from memory: %d", input_file, error_code);
       return;
     }
     PDF2Image(doc_memory, true);
     SaveTiffImage(doc_memory, true);
  }
} catch (e) {
  console.log(e);
}
FSDK.Library.Release();
