import os
import sys

def drawBar():
    print "---------------------------------------"

def main():
    userList = ['JB']
    passWordList = {'JB':'test'}
    userName = ''
    passWord = ''
    while True:
        drawBar()
        userName = raw_input("Username: ")
        if userName not in userList:
            drawBar()
            print "That is not a valid username"
            raw_input("Press ENTER to continue...")
            continue
        passWord = raw_input("Password: ")
        if passWord != passWordList[userName]:
            drawBar()
            print "That is an incorrect password"
            raw_input("Press ENTER to continue...")
            continue
        #drawBar()
        #print "You have successfully logged on as",userName
        #raw_input("Press ENTER to continue...")
        while True:
            drawBar()
            print "Welcome", userName
            print "L:Log Out    C:Change Password    Q:Quit    U:Change Username"
            choiceList = ['l','c','q','u']
            while True:
                drawBar()
                choice = raw_input("What would you like to do today?: ")
                choice = choice.lower()
                if choice in choiceList:
                    break
                else:
                    drawBar()
                    print "That is not a valid choice"
            if choice == 'l':
                drawBar()
                print "You have successfully logged out"
                raw_input("Press ENTER to continue")
                break
            elif choice == 'c':
                drawBar()
                newPass = raw_input("New Password: ")
                passWordList[userName] = newPass
                print "You have successfully changed your password..."
                raw_input("Press ENTER to continue")
            elif choice == 'q':
                drawBar()
                print "You are now quitting..."
                raw_input("Press ENTER to continue")
                sys.exit(1)
            elif choice == 'u':
                drawBar()
                newUsername = raw_input("New Username: ")
                if newUsername in userList:
                    print "That username is already taken"
                    raw_input("Press ENTER to continue")
                else:
                    userPos = userList.index(userName)
                    userList[userPos] = newUsername
                    passWordList.update({newUsername:passWordList[userName]})
                    del passWordList[userName]
                    userName = newUsername
                    print "You have successfully changed your username"
                    raw_input("Press ENTER to Continue")





main()