#include "pch.h"

#include <stdio.h>
#include <wchar.h>
#include <vector>
#include <string>
#include <iterator>
#include <array>
#include <iostream>    
#include <fstream>      
#include <sstream>
#include <iomanip>
#include <Windows.h>
#include <io.h>
#include <fcntl.h>

//const int CharCount = 255;
//std::string FileIn[CharCount];
//wchar_t *FileOut = new wchar_t[CharCount];
//wchar_t *Title = new wchar_t[CharCount];
//wchar_t *LogFile = new wchar_t[CharCount];

int   wmain(int argc, wchar_t *argv[], wchar_t *envp[])
{   ////////////////////переводим в Юникод
   _setmode(_fileno(stdout), _O_U16TEXT);
   _setmode(_fileno(stdin), _O_U16TEXT);
   _setmode(_fileno(stderr), _O_U16TEXT);
   ////////////////////переводим в Юникод
   system("mode con cols=100 lines=50"); //размер окна, вывод количества строк в консоль
   HANDLE  hout = GetStdHandle(STD_OUTPUT_HANDLE);
   COORD  size{ 100,100 };//символов строки, строк
   SetConsoleScreenBufferSize(hout, size);//размер буфера
   ///////////////////////////////////
   static wchar_t* prog_name = argv[0];
   int Log = 0;
   int Caption = 0;
   int OnlySort = 0;
   std::wcout << L"Created by 2017 Bedvit (bedvit@mail.ru)\n";
   std::wcout << L"Delete duplicate rows in the .CSV file (With or without a title(choose zize), ANSI, text separator - (\\n)(&#10)(U+000A)\n";

   std::wstring FileIn;
   std::wstring FileOut;

   if (argc > 2) {
      FileIn = argv[1];
      std::wcout << L"\nEnter Full Name CSV In: ";
      std::wcout << FileIn;
      FileOut = argv[2];
      std::wcout << L"\nEnter Full Name CSV Out: ";
      std::wcout << FileOut;
      if (argc > 3) Caption = _wtoi(argv[3]);
      std::wcout << L"\nEnter the number of header lines: ";
      std::wcout << Caption;
      if (argc > 4) Log = _wtoi(argv[4]);
      std::wcout << L"\nEnter 0 - Sort and Delete duplicate rows, 1 - Sort: ";
      if (argc > 5) OnlySort = _wtoi(argv[5]);
      std::wcout << OnlySort;
   }
   else {
      std::wcout << L"\nEnter Full Name CSV In: ";
      //std::cin >> FileIn;//scanf("%[^\r\n]", FileIn);//fgets(FileIn, 255, stdin);//std::getline(std::cin, FileIn);
      //fgetws(FileIn.c_str(), CharCount, stdin);
      //FileIn[wcscspn(FileIn, L"\n")] = 0;
      std::wcin >> FileIn;

      wprintf(L"Enter Full Name CSV Out: ");
      //fgetws(FileOut, CharCount, stdin);
      //FileOut[wcscspn(FileOut, L"\n")] = 0;
      std::wcin >> FileOut;

      std::wcout << L"Enter the number of header lines: ";
      //fgetws(Title, CharCount, stdin);
      //Title[wcscspn(Title, L"\n")] = 0;
      //Caption = _wtoi(Title);
      std::wcin >> Caption;

      Log = 1;

      std::wcout << L"nEnter 0 - Sort and Delete duplicate rows, 1 - Sort: ";
      std::wcin >> OnlySort;

   }

   if (Caption < 0) {
      bool err = true;
      wprintf(L"\nERROR: the number of header lines\n\n");
      _wsystem(L"pause");
      return 1;
   }

   if (FileIn.length() < 5 || FileOut.length() < 5) {
      bool err = true;
      wprintf(L"\nERROR: Full Name CSV\n\n");
      _wsystem(L"pause");
      return 1;
   }

   std::ifstream file1(FileIn, std::ios::in | std::ios::binary);
   if (!file1.is_open()) {
      wprintf(L"\nERROR: Full Name CSV In\n\n");
      _wsystem(L"pause");
      return 1;
   }
   std::ofstream file2(FileOut, std::ios::out | std::ios::binary);
   if (!file2.is_open()) {
      wprintf(L"\nERROR: Full Name CSV Out\n\n");
      _wsystem(L"pause");
      return 1;
   }

   unsigned long long time0 = clock(); // начальное время
   wprintf(L"\nStart...\n");

   std::vector<std::string> DataIn;
   std::istream_iterator<std::string> input_iterator(file1), end;
   std::copy(input_iterator, end, std::back_inserter(DataIn));

   unsigned long long time1 = clock();
   wprintf(L"File: Open, rows = %zi, time = %6.3f\n", DataIn.size(), (double)(time1 - time0) / 1000);

   std::sort(DataIn.begin() + Caption, DataIn.end());
   unsigned long long time2 = clock();
   wprintf(L"File: Sort, time = %6.3f\n", (double)(time2 - time1) / 1000);

   unsigned long long time4 = time2;
   if (OnlySort != 1)
   {
      std::vector<std::string>::iterator it;
      it = std::unique(DataIn.begin() + Caption, DataIn.end());
      unsigned long long time3 = clock();
      wprintf(L"File: Unique, time = %6.3f\n", (double)(time3 - time2) / 1000);

      DataIn.resize(std::distance(DataIn.begin(), it));
      time4 = clock();
      wprintf(L"File: Resize, time = %6.3f\n", (double)(time4 - time3) / 1000);
   }
   std::ostream_iterator<std::string> output_iterator(file2, "\n");// std::ostream_iterator<std::string> output_iterator(output_file, "\n");
   std::copy(DataIn.begin(), DataIn.end(), output_iterator);//std::copy(example.begin(), example.end(), output_iterator);

   file1.close();
   file2.close();

   unsigned long long time5 = clock();
   wprintf(L"File: Save, rows = %zi, time = %6.3f\n", DataIn.size(), (double)(time5 - time4) / 1000);
   wprintf(L"End\nTotal Time = %6.3f(sec)\n", (double)(time5 - time0) / 1000);

   if (Log != 0) _wsystem(L"pause");
   return 0;
}