///////////////////////////////////////////////////////////////////////
// MT2Q4b.cpp - Asynchronous text finder                             //
//                                                                   //
// Jim Fawcett, CSE687 - Object Oriented Design, Midterm Spring 2018 //
///////////////////////////////////////////////////////////////////////

#include "../StringUtilities/StringUtilities.h"
#include <iostream>
#include <fstream>
#include <sstream>
#include <thread>
#include <future>

using FPtr = bool(*)(const std::string&, const std::string&);

//----< synchronous text finder >--------------------------------------

bool findText(const std::string& text, const std::string& filePath)
{
  std::ifstream in(filePath);
  if (!in.good())
  {
    std::cout << "\n  can't open \"" << filePath << "\"";
    return false;
  }

  std::string fileText;

  std::ostringstream out;
  out << in.rdbuf();
  fileText = out.str();

  //while (in.good())
  //{
  //  char ch;
  //  in >> ch;
  //  fileText += ch;
  //}

  size_t pos = fileText.find(text);
  return pos < fileText.size();
}

int main()
{
  Utilities::Title("MT2Q4b - text finder");
 
  std::string text = "main";
  std::string fPath1 = "../Test/Copy_MT2Q4.h";
  std::string fPath2 = "../Test/Copy_MT2Q4.cpp";
  std::future<bool> f1 = std::async(std::launch::async, findText, text, fPath1);
  std::future<bool> f2 = std::async(std::launch::async, findText, text, fPath2);

  if (f1.get())
    std::cout << "\n  found \"" << text << "\" in file \"" << fPath1;
  else
    std::cout << "\n  didn't find \"" << text << "\" in file \"" << fPath1;

  if (f2.get())
    std::cout << "\n  found \"" << text << "\" in file \"" << fPath2;
  else
    std::cout << "\n  didn't find \"" << text << "\" in file \"" << fPath2;

  std::cout << "\n\n";
  return 0;
}