#define TIMEOUT 45
#define BUFFSIZE 1000
#define USERNAME 1
#define PASSWORD 2

int handle_robot(int klient) {
	request_login(klient); //poslali jsme zadost o login
	struct timeval timeout;
    timeout.tv_sec = TIMEOUT;
    timeout.tv_usec = 0;
    fd_set sockets;
    char buffer[BUFFSIZE];

    while(1) {
    	int expecting = USERNAME;
    	int passwordInteger = 0;
    	string username;
    	string password;
    	unsigned char prevByte;
    	unsigned char currentByte;
    	FD_ZERO (&sockets);
    	FD_SET (klient, &sockets);

    	if (int r = select (klient + 1, &sockets, NULL, NULL, &timeout) < 0) {
    		cout << "Could not receive data from client." << endl;
    		close(klient);
    		return -1;
    	}

    	if (!FD_ISSET(klient, &sockets)) {
    		cout << "Connection timeout." << endl;
    		close(klient);
    		return 0;
    	}
    	int bytesCount = recv (klient, buffer, BUFFSIZE, 0);

    	if ( bytesCount <= 0) {
    		cout << "Could not read from sock." << endl;
    		close(klient);
    		return -1;
    	}

    	for (int i = 0; i < bytesCount; i++) {
    		currentByte = buffer[i];

    		switch (expecting) {
    			case USERNAME:
    				if (currentByte == '\n' && prevByte == '\r') {
    					passwordInteger -= '\r';
    					int userSize = username.length();
    					username.resize(userSize - 1);

    					request_password(klient);
    					expecting = PASSWORD;
    					prevByte = currentByte;
    					break;
    				} else {
    					passwordInteger += currentByte;
    					username.push_back(currentByte);
    					prevByte = currentByte;
    					break;
    				}
    			case PASSWORD:
    				if (currentByte == '\n' && prevByte == '\r') {
    					int passwordSize = password.length();
    					password.resize (passwordSize - 1);
    					if (username.substr(0,5) != "Robot" || atoi(password.c_str()) != passwordInteger) {
    						login_failed(klient);
    						close(klient);
    						return -1;
    					} else {
    						login_ok(klient);
    					}
    				} else {
    					password.push_back(currentByte);
    					prevByte = currentByte;
    					break;
    				}



    			//zde konci switch podle statusu
    		}

    		//zde konci for cyklus
    	}
    	//zde konci while cyklus
    }


}