#include <iostream>
#include <string>
#include <chrono>
#include <Windows.h>

using namespace std;
using namespace std::chrono;

void waitforkeypress()
{
    HANDLE hInput = GetStdHandle(STD_INPUT_HANDLE);
    INPUT_RECORD inputRecord;
    DWORD events;

    if (hInput == INVALID_HANDLE_VALUE) return;
     
    while (true)
    {
        WaitForSingleObject(hInput, INFINITE);
        if (PeekConsoleInput(hInput, &inputRecord, 1, &events) && inputRecord.EventType == KEY_EVENT && inputRecord.Event.KeyEvent.bKeyDown) return;
        else ReadConsoleInput(hInput, &inputRecord, 1, &events);
    }
}

int main() {
    string input;
    const string target = "abcdefghijklmnopqrstuvwxyz";

    while (true)
    {
        cout << "Type the alphabet (a-z) as quickly as possible, then press Enter:\n";

        waitforkeypress();
        // Start high-precision timer
        auto start = high_resolution_clock::now();

        getline(cin, input); // Read input from the user

        // Stop the timer
        auto end = high_resolution_clock::now();

        // Calculate the elapsed time in milliseconds
        auto duration = duration_cast<milliseconds>(end - start);

        // Ensure the user typed the alphabet correctly
        if (input == target) {
            cout << "Congratulations! You typed the alphabet in " << duration.count() << " milliseconds.\n";
        }
        else {
            cout << "Alphabet was incorrect. It took you " << duration.count() << " milliseconds.\n" << "Please try again.\n";
        }
    }
}