package unimapdbconsole;

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;

public class executer
{
	BufferedReader reader;
	String username,password;
	db dbobject;
	int choice;
	public executer()
	{
		reader=new BufferedReader(new InputStreamReader(System.in));
		username=password=null;
		dbobject=new db();
		dbobject.init();
		choice=0;
		login();
	}
	public void login()
	{
		while(true)
		{
			try
			{
				clearScreen();
				System.out.println("Welcome !");
				System.out.println("Enter User Name");
				username=reader.readLine();
				System.out.println("Enter Password");
				password=reader.readLine();
				if(dbobject.validate(username, password))
					menu();
				else
				{
					clearScreen();
					System.out.println("Authentication Error");
				}
			}
			catch(Exception e)
			{
				System.out.println("Invalid Choice");
				try {reader.readLine();}catch(IOException ex) {}
				menu();
			}
		}
	}
	public void menu()
	{
		do
		{
			clearScreen();
			System.out.println("Welcome !");
			System.out.println("1. Add Student");
			System.out.println("0. Exit");
			System.out.println("Enter your choice");
			try
			{
				choice=Integer.parseInt(reader.readLine());
				if(choice==1)
				{
					//
				}
				else
				{;}
			}
			catch(Exception e)
			{
				System.out.println("Invalid Choice");
				try {reader.readLine();}catch(IOException ex) {}
				menu();
			}

		}while(choice!=0);
	}
	public static void clearScreen()
	{
		for (int i=1; i<=10; i++)
		    System.out.println("\n");
	}
	public static void main(String[] args)
	{
		new executer();
	}
}