#include <iostream>
#include <string.h>
#include <conio.h>
#include <windows.h>
#include <ddtconsole.h>

#define czas 60000
#define disp_text "Dzwienki od Q do P\nZmiana oktawy + i -\n"

using namespace ddt::console;
using namespace std;

unsigned short last_key;
unsigned char global_char;
HANDLE opened_th[2] = {0,0};
short oktawa = 4;
const int notes[7][10] = {
  {0,33,37,41,44,49,55,62,65,73},
  {62,65,73,82,87,98,110,123,131,147},
  {123,131,147,165,175,196,220,247,262,294},
  {247,262,294,330,349,392,440,494,523,587},
  {494,523,587,659,698,784,880,988,1047,1175},
  {998,1047,1175,1319,1397,1568,1760,1976,2093,2349},
  {1976,2093,2349,2637,2794,3136,3520,3951,4186,0},
};
const string note_symb[7][10] = {
  {"Brak","C1","D1","E1","F1","G1","A1","H1","C2","D2"},
  {"H2","C2","D2","E2","F2","G2","A2","H2","C3","D3"},
  {"H2","C3","D3","E3","F3","G3","A3","H3","C4","D4"},
  {"H3","C4","D4","E4","F4","G4","A4","H4","C5","D5"},
  {"H4","C5","D5","E5","F5","G5","A5","H5","C6","D6"},
  {"H5","C6","D6","E6","F6","G6","A6","H6","C7","D7"},
  {"H6","C7","D7","E7","F7","G7","A7","H7","C8","Brak"},
};
const int keys[10] = {113,119,101,114,116,121,117,105,111,112}; //Kody klawiszy. Małe litery.

DWORD WINAPI play_sound(PVOID freq){
  Beep(DWORD(freq),czas);
}

DWORD WINAPI key_radar(PVOID terminate){
  do {
    while(kbhit()){
      global_char = getch();
    }
    if(!kbhit()){ //tu jest problem.
      global_char = 7;
    }
  } while(1==1);
}

string check_key(unsigned char key){
  //static unsigned char last_key;

  if(key == last_key){
    for(int i=0;i<=10;i++){
      if(int(key) == keys[i]){
        return note_symb[oktawa][i];
      }
    }
  }

  if(key == 43){
    oktawa++;
    if(oktawa > 6) {oktawa = 6;}
    return "Oktawa +";
  } else if (key == 45){
    oktawa--;
    if(oktawa < 0) {oktawa = 0;}
    return "Oktawa -";
  }

  if(key != last_key){
    DWORD th_id = 0;
    int freq = 0;
    if(opened_th[1] != NULL){
      TerminateThread(opened_th[1],0);
    }
    last_key = key;
    for(int i=0;i<=10;i++){
      if(int(key) == keys[ i]){
        freq = notes[oktawa][ i];
        opened_th[1] = CreateThread(NULL, 0, play_sound, (PVOID)freq, 0, &th_id);
        return note_symb[oktawa][ i];
      }
    }
    opened_th[1] = CreateThread(NULL, 0, play_sound, (PVOID)freq, 0, &th_id);
    return "Pauza";
  }
  return "";
}

int main(){
  SetConsoleTitleA("Music Player by Skorek. Rev 3.");
  string info[2];
  cout << disp_text;

  opened_th[0] = CreateThread(NULL, 0, key_radar, (PVOID)false, 0, NULL);

  while (int(global_char) != 27){   
    info[0] = check_key(global_char);
    if(info[0] == "") {info[0] = info[1];}
    gotoxy(1,1);
    cout << disp_text << "Oktawa: " << oktawa+1 << "\nDzwienk: " << info[0] << "              ";
    gotoxy(1, 10);
    info[1] = info[0];
    SetConsoleTitleA("Music Player by Skorek. Rev 3.");
  }   
  TerminateThread(opened_th[0], 0);
  return 0;
}