// 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 do optimize in PDF documents under a folder.

// Include Foxit SDK header files.
#include <time.h>
#include <iostream>
#if defined(_WIN32) || defined(_WIN64)
#include<direct.h>
#else
#include <sys/stat.h>
#endif

#include "../../../include/common/fs_common.h"
#include "../../../include/pdf/fs_pdfdoc.h"
#include "../../../include/pdf/fs_pdfpage.h"
#include "../../../include/addon/optimization/fs_optimization.h"

using namespace std;
using namespace foxit;
using namespace foxit::common;
using foxit::common::Library;
using namespace pdf;
using namespace foxit::addon;

static const char* sn = "bPxThFlBAYifO3yiW0C51bKbjPap1zHaf5aG5sX378TjFvB7Q0802A==";
static const char* key = "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";

#if defined(_WIN32) || defined(_WIN64)
static WString output_path = WString::FromLocal("../output_files/");
static WString input_path = WString::FromLocal("../input_files/optimization/");
#else
static WString output_path = WString::FromLocal("./output_files/");
static WString input_path = WString::FromLocal("./input_files/optimization/");
#endif

class SdkLibMgr {
public:
  SdkLibMgr() : is_initialize_(false){};
  ErrorCode Initialize() {
    ErrorCode error_code = Library::Initialize(sn, key);
    if (error_code != foxit::e_ErrSuccess) {
      printf("Library Initialize Error: %d\n", error_code);
    } else {
      is_initialize_ = true;
    }
    return error_code;

  }
  ~SdkLibMgr(){
    if(is_initialize_)
      Library::Release();
  }
private:
  bool is_initialize_;
};

class Optimization_Pause : public PauseCallback
{
public:
    Optimization_Pause(int pause_count_limit = 0, bool always_pause = false)
        :pause_count_(0)
        ,pause_count_limit_(pause_count_limit)
        ,always_pause_(always_pause)
    {

    }

    virtual FX_BOOL NeedToPauseNow()
    {
        if (always_pause_) return true;
        if (pause_count_< pause_count_limit_)
        {
            pause_count_ ++;
            return 1;
        }
        else{
            pause_count_ = 0;
            return 0; // This is to test a case: valid PauseCallback but needParseNow() will always return FALSE.
        }
    }

    void  ClearCount()
    {
        pause_count_ = 0;
    }

private:
    int pause_count_limit_;
    int pause_count_;
    bool always_pause_;
};


int main(int argc, char *argv[])
{
  WString output_directory = output_path + L"optimization/";
#if defined(_WIN32) || defined(_WIN64)
  _mkdir(String::FromUnicode(output_directory));
#else
  mkdir(String::FromUnicode(output_directory), S_IRWXU | S_IRWXG | S_IROTH | S_IXOTH);
#endif
  int err_ret = 0;
  SdkLibMgr sdk_lib_mgr;
  // Initialize library
  ErrorCode error_code = sdk_lib_mgr.Initialize();
  if (error_code != foxit::e_ErrSuccess) {
    return 1;
  }
  cout << "Optimized Start : Image Compression." << endl;
  WString input_file = input_path +  L"[Optimize]ImageCompression.pdf";
  try
  {
      PDFDoc doc(input_file);
      ErrorCode error_code = doc.Load();
      if (error_code != foxit::e_ErrSuccess) {
          printf("The Doc [%s] Error: %d\n", (const char*)String::FromUnicode(input_path), error_code);
          return 1;
      }
      Optimization_Pause pause(0, true);
      addon::optimization::OptimizerSettings settings;
      settings.SetOptimizerOptions(foxit::addon::optimization::OptimizerSettings::e_OptimizerCompressImages);
      common::Progressive progressive = addon::optimization::Optimizer::Optimize(doc, settings, &pause);
      Progressive::State progress_state = Progressive::e_ToBeContinued;
      while (Progressive::e_ToBeContinued == progress_state) {
          progress_state = progressive.Continue();
          int percent = progressive.GetRateOfProgress();
          String res_string;
          res_string.Format("Optimize progress percent: %d %", percent);
          std::cout << res_string << std::endl;
      }
      if (Progressive::e_Finished == progress_state)
      {
          doc.SaveAs(output_directory + L"ImageCompression_Optimized.pdf", foxit::pdf::PDFDoc::e_SaveFlagRemoveRedundantObjects);
      }
  } catch (...) {
    cout << "Unknown Exception" << endl;
    return 1;
  }
  cout << "Optimized Finsih : Image Compression." << endl;

  cout << "Optimized Start : Clean up." << endl;
  input_file = input_path + L"[Optimize]Cleanup.pdf";
  try {
    PDFDoc doc(input_file);
    ErrorCode error_code = doc.Load();
    if (error_code != foxit::e_ErrSuccess) {
      printf("The Doc [%s] Error: %d\n", (const char*)String::FromUnicode(input_path), error_code);
      return 1;
    }
    Optimization_Pause pause(0, true);
    addon::optimization::OptimizerSettings settings;
    settings.SetOptimizerOptions(foxit::addon::optimization::OptimizerSettings::e_OptimizerCleanUp);
    settings.SetCleanUpOptions(optimization::OptimizerSettings::e_CleanUpRemoveInvalidBookmarks | optimization::OptimizerSettings::e_CleanUpRemoveInvalidLinks
      | optimization::OptimizerSettings::e_CleanUpUseFlateForNonEncodedStream | optimization::OptimizerSettings::e_CleanUpUseFlateInsteadOfLZW);
    common::Progressive progressive = addon::optimization::Optimizer::Optimize(doc, settings, &pause);
    Progressive::State progress_state = Progressive::e_ToBeContinued;
    while (Progressive::e_ToBeContinued == progress_state) {
      progress_state = progressive.Continue();
      int percent = progressive.GetRateOfProgress();
      String res_string;
      res_string.Format("Optimize progress percent: %d %", percent);
      std::cout << res_string << std::endl;
    }
    if (Progressive::e_Finished == progress_state) {
      doc.SaveAs(output_directory + L"Cleanup_Optimized.pdf", foxit::pdf::PDFDoc::e_SaveFlagRemoveRedundantObjects);
    }
  } catch (...) {
    cout << "Unknown Exception" << endl;
    return 1;
  }
  cout << "Optimized Finsih : Clean up." << endl;

  cout << "Optimized Start : Discard Objects." << endl;
  input_file = input_path + L"[Optimize]DiscardObjects.pdf";
  try {
      PDFDoc doc(input_file);
      ErrorCode error_code = doc.Load();
      if (error_code != foxit::e_ErrSuccess) {
          printf("The Doc [%s] Error: %d\n", (const char*)String::FromUnicode(input_path), error_code);
          return 1;
      }
      Optimization_Pause pause(0, true);
      addon::optimization::OptimizerSettings settings;
      settings.SetOptimizerOptions(foxit::addon::optimization::OptimizerSettings::e_OptimizerDiscardObjects);
      settings.SetDiscardObjectsOptions(optimization::OptimizerSettings::e_DiscardObjectsBookmarks | optimization::OptimizerSettings::e_DiscardObjectsEmbeddedPageThumbnails
          | optimization::OptimizerSettings::e_DiscardObjectsEmbeddedPrintSettings | optimization::OptimizerSettings::e_DiscardObjectsFlattenFormFields 
          | optimization::OptimizerSettings::e_DiscardObjectsFormActions | optimization::OptimizerSettings::e_DiscardObjectsJavaScriptActions);

      common::Progressive progressive = addon::optimization::Optimizer::Optimize(doc, settings, &pause);
      Progressive::State progress_state = Progressive::e_ToBeContinued;
      while (Progressive::e_ToBeContinued == progress_state) {
          progress_state = progressive.Continue();
          int percent = progressive.GetRateOfProgress();
          String res_string;
          res_string.Format("Optimize progress percent: %d %", percent);
          std::cout << res_string << std::endl;
      }
      if (Progressive::e_Finished == progress_state) {
          doc.SaveAs(output_directory + L"DiscardObjects_Optimized.pdf", foxit::pdf::PDFDoc::e_SaveFlagRemoveRedundantObjects);
      }
  }
  catch (...) {
      cout << "Unknown Exception" << endl;
      return 1;
  }
  cout << "Optimized Finsih : Discard Objects." << endl;
  return err_ret;
}