#!/usr/bin/env python2

import xmlrpc.client
import hashlib
import os
import sys

# connects to the XMLRPC Server
s = xmlrpc.client.ServerProxy('http://localhost:8000')
clear = lambda: os.system('clear')
# initalized the login process
session, key = s.init()
authenticated = False
username = ''
password = ''

# concatenates the password and key and returns the hash
def hash_pass( password, key ):
    return hashlib.sha256( ( password + key ).encode( 'utf-8' ) ).hexdigest()

# starts main loop
while True:
    clear()
    # if authenticated offer to user premium methods
    if authenticated:
        print( 'Welcome ' + username )
        print( 'Please enter what you want to do ( hello, create_user, logout )' )
        i = input().lower()
        clear()
        if ( i == 'hello' ):
            print( s.hello( session ) )
        elif ( i == 'create_user' ):
            print( 'Username: ' )
            un = input()
            clear()
            print( 'Password:' )
            pw = input()
            clear()
            print( s.create_user( session, un, pw ) )
        elif( i == 'logout' or i == 'exit' ):
            if ( s.logout( session, username, hash_pass( password, key ) ) ):
                authenticated = False
                sys.exit()

        else:
            print( 'Unknown action ' + i )
        print( 'Press any key to continue' )
        input();
    # otherwise offer to authenticate
    else:
        print( 'Username: ' )
        username = input()
        clear()
        print( 'Password:' )
        password = input()
        clear()
        authenticated = s.auth( session, username, hash_pass( password, key ) )
    pass