// 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 search text in all pages in PDF document.

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/";

class TextDoc {
  constructor(file_name, file_mode) {
    this.file_name = file_name;
    this.file_mode = file_mode;
    this.file_stream = fs.openSync(file_name, file_mode);
    if (!this.file_stream) {
      throw new Error('Cannot open file');
    }
  }
  Write(format, ...args) {
    if(!this.file_stream) 
      throw new Error("File not opened");
    let formatted_string = util.format(format, ...args);
    let buffer = new Buffer.from(formatted_string, 'utf-8');
    fs.writeSync(this.file_stream, buffer, 0, buffer.length);
  }
  WriteWithPrefix(count, prefix, format, ...args){
    for (let i = 0; i < count; i++) {
      this.Write(prefix);
    }
    this.Write(format, ...args);
  }
  Close() {
    fs.closeSync(this.file_stream);
    this.file_stream = null;
  }
}

function OutputMatchedInfo(text_out, search, matched_index) {
  let page_index = search.GetMatchPageIndex();
  let format_str = `Index of matched pattern:\t${matched_index}\r\n`;
  text_out.Write(format_str);
  format_str = `\tpage:${page_index}\r\n`;  
  text_out.Write(format_str);
  format_str = `\tmatch char start index:\t${search.GetMatchStartCharIndex()}\r\n`;
  text_out.Write(format_str);
  format_str = `\tmatch char end index:\t${search.GetMatchEndCharIndex()}\r\n`;
  text_out.Write(format_str);
  format_str = `\tmatch sentence start index:\t${search.GetMatchSentenceStartIndex()}\r\n`;
  text_out.Write(format_str);
  format_str = "\tmatch sentence:\t";
  format_str += search.GetMatchSentence();
  format_str += "\r\n";
  text_out.Write(format_str);
  let rect_array = search.GetMatchRects();
  let rect_count = rect_array.GetSize();
  format_str = `\tmatch rectangles count:\t${rect_count}\r\n`;
  text_out.Write(format_str);
  for (let i = 0; i < rect_count; i++) {
    let rect = rect_array.GetAt(i);
    format_str = `\trectangle(in PDF space) :${i}\t[left = ${rect.left}, bottom = ${rect.bottom}, right = ${rect.right}, top = ${rect.top}]\r\n`;
    text_out.Write(format_str);
  }
}

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

let input_file = input_path + "AboutFoxit.pdf";
let output_file = output_directory + "search.txt";

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;
  }
  let text_out = new TextDoc(output_file, "w");

  // sample 1: search for all pages of doc.
  let search = new FSDK.TextSearch(doc, null, FSDK.TextPage.e_ParseTextNormal);

  let start_index = 0;
  let end_index = doc.GetPageCount() - 1;
  search.SetStartPage(0);
  search.SetEndPage(doc.GetPageCount() - 1);

  let pattern = "Foxit";
  search.SetPattern(pattern, false);

  let flags = FSDK.TextSearch.e_SearchNormal;
  // If want to specify flags, you can do as followings:
  // flags |= TextSearch::e_SearchMatchCase;
  // flags |= TextSearch::e_SearchMatchWholeWord;
  // flags |= TextSearch::e_SearchConsecutive;
  search.SetSearchFlags(flags);
  let format_str = "";
  format_str = "Begin search ";
  format_str += pattern;
  format_str += " at ";
  format_str += input_file;
  format_str += ".\n";
  text_out.Write(format_str);  
  format_str = `Start index:\t${start_index}\r\n"`;
  text_out.Write(format_str);
  format_str = `End index:\t${end_index}\r\n"`;
  text_out.Write(format_str);
  format_str = "Match key:\t";
  format_str += pattern;
  format_str += "\r\n";
  text_out.Write(format_str);
  let match_case = flags & FSDK.TextSearch.e_SearchMatchCase ? "Yes" : "No";
  format_str = "Match Case\t";
  format_str += match_case;
  format_str += "\r\n";
  text_out.Write(format_str);
  let match_whole_word = flags & FSDK.TextSearch.e_SearchMatchWholeWord ? "Yes" : "No";
  format_str = "Match whole word:\t";
  format_str += match_whole_word;
  format_str += "\r\n";
  text_out.Write(format_str);
  match_consecutive = flags & FSDK.TextSearch.e_SearchConsecutive ? "Yes" : "No";
  format_str = "Consecutive:\t";
  format_str += match_consecutive;
  format_str += "\r\n";
  text_out.Write(format_str);
  let match_count = 0;
  while (search.FindNext()) {
    let rect_array = search.GetMatchRects();
    OutputMatchedInfo(text_out, search, match_count);
    match_count ++;
  }
  console.log("Marched %d counts.",match_count);
  // end of sample 1.
  console.log("Search demo finished.");
} catch (e) {
  console.log(e);
}
FSDK.Library.Release();