#include<iostream>
#include<fstream>
#include<string.h>
#include<unistd.h>
#include<termios.h>
using namespace std;
int getch() {
    struct termios oldt, newt;
    int ch;
    tcgetattr(STDIN_FILENO, &oldt);
    newt = oldt;
    newt.c_lflag &= ~(ICANON | ECHO);
    tcsetattr(STDIN_FILENO, TCSANOW, &newt);
    ch = getchar();
    tcsetattr(STDIN_FILENO, TCSANOW, &oldt);
    return ch;
}
bool authUser();
class user{
	char uid[8];
	char pwd[8];
	int level;
public:
	void initUser(){
		cout<<"\nUsername(7ch max): ";
		cin.getline(uid, 7);
		cout<<"Password(7ch max): ";
		cin.getline(pwd, 7);
		level = 0;
	}
	int authenticate(char *u, char *p){
		if((!strcmp(u, uid)) && (!strcmp(p, pwd)))
			return 1;
		else if(!strcmp(u, uid))
			return 0;
		else
			return -1;
	}
	void _debug(){
		cout<<uid<<"|"<<pwd<<"|"<<level;
	}
	char* getData(int f){
		if(f)
			return uid;
		return pwd;
	}
	int getLevel(){
		return level;
	}
}CURRENT;
void addUser(){
	cout<<"\n==========================================================================="
	    <<"\n                                                            CTC UserDB V1.0";
	user newUser, t;
	newUser.initUser();
	fstream userdb;
	userdb.open("users.ctc", ios::binary|ios::in);
	while(!userdb.eof()){
		userdb.read((char*)&t, sizeof(t));
		if(!strcmp(newUser.getData(1), t.getData(1))){
			cout<<"\nUser already exist, please redo\n";
			userdb.close();
			addUser();
		}
	}
	userdb.close();
	userdb.open("users.ctc", ios::binary|ios::out|ios::app);
	userdb.write((char*)&newUser, sizeof(newUser));
	cout<<"\n                                                  User Successfully created";
	userdb.close();
	authUser();
}
bool authUser(){
	char u[8],p[8],x;
	int i=0;
	cout<<"\n==========================================================================="
	    <<"\n                                                         CTC UserAuth V1.1a";
	cout<<"\nUSERNAME : ";cin.getline(u, 7);
	cout<<"PASSWORD : ";
	do{
		x = getch();
		p[i] = x;
		if(x == '\n'){
			p[i]='\0';
			break;
		}
		cout<<"*";
		i++;
	}while(i<8);
	user t;
	fstream userdb;
	userdb.open("users.ctc", ios::binary|ios::in);
	while(!userdb.eof()){
		userdb.read((char*)&t, sizeof(t));
		if(t.authenticate(u, p) == 1){
			CURRENT = t;
			cout<<"\n                                          Logged in successfully as "<<CURRENT.getData(1);
			userdb.close();
			return true;
		}
		else if(t.authenticate(u, p) == 0){
			cout<<"\nWrong password, please login again.";
			userdb.close();
			return authUser();
		}
	}
	cout<<"\nInvalid login data, please login again";
	return authUser();
}
int main(){
	char ch;
	cout<<"8\"\"\"\"8                             \"\"8\"\"               8\"\"\"\"8\n8    \" eeeee  eeeee eeee e   e       8   e   e eeee    8    \" eeeee eeeee eeee\n8e     8   8  8   8 8  8 8   8       8e  8   8 8       8e     8  88 8   8 8\n88     8eee8e 8eee8 8e   8eee8e      88  8eee8 8eee    88     8   8 8e  8 8eee\n88   e 88   8 88  8 88   88   8      88  88  8 88      88   e 8   8 88  8 88\n88eee8 88   8 88  8 88e8 88   8      88  88  8 88ee    88eee8 8eee8 88ee8 88ee\n";
	cout<<"\n==========================================================================="
	    <<"\n                                                       Crack The Code V0.1b"
	    <<"\n1)Login\n2)Create"
	    <<"\n$ ";
	cin>>ch;
	cin.ignore();
	if(ch == '1')
		authUser();
	else
		addUser();
	cout<<"\n==========================================================================="
	    <<"\nHello "<<CURRENT.getData(1)<<", you are currently on Level "<<CURRENT.getLevel()<<".\nContinue playing now? (y)es or (n)o";
}