package unimapdbconsole;

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

public class executer
{
    private BufferedReader reader;
    private String username,password,fullname;
    private db dbobject;
    private int choice;

    public executer()
    {
        reader=new BufferedReader(new InputStreamReader(System.in));
        username=password=null;
        dbobject=new db();
        dbobject.init();
        dbobject.opencon();
        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("Main Menu");
            System.out.println("1. Add User");
            System.out.println("2. Edit User");
            System.out.println("0. Exit");
            System.out.println("Enter your choice");
            try
            {
                choice=Integer.parseInt(reader.readLine());
                if(choice==0)
                {
                    exit();
                }

                else if(choice==1)
                {
                    adduser();

                }

                else if (choice==2)
                {
                    editUser();
                }

                else
                {;}
            }
            catch(Exception e)
            {
                System.out.println("Invalid Choice");
                try {reader.readLine();}catch(IOException ex) {}
                menu();
            }

        }while(choice!=0);
    }
    public void adduser()
    {
        try
        {
            clearScreen();
            System.out.println("Adding New User...");
            System.out.println("Enter User Name");
            username=reader.readLine();
            System.out.println("Enter Password");
            password=reader.readLine();
            System.out.println("Enter Fullname");
            fullname=reader.readLine();
            if(dbobject.adduser(username, password, fullname))
            {
                System.out.println("User inserted..");
                try {reader.readLine();}catch(IOException ex) {}
            }
            else
            {
                System.out.println("User insert failed..");
            }
        }
        catch(Exception e)
        {
            System.out.println("Input Error");
            try
            {
                reader.readLine();
            }
            catch(IOException ex) {}
        }
        }
        public void editUser()
        {
            try
            {
                System.out.println("Enter Username");
                username=reader.readLine();
                System.out.println("Edit fullname");
                fullname=reader.readLine();
                dbobject.opencon();
                if (dbobject.update(username,fullname))
                {
                    System.out.println("fullname edited");
                }
                else
                {
                    System.out.println("Unable to edit fullname");
                }
            }
            catch(IOException ex) {}

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