import random
import pickle

#Begin Function List#
def save(item, name):
    f = file(name+'file', 'w')
    pickle.dump(item, f)
    f.close

def load(item):
    try:
        f = file(item+'file')
        obj = pickle.load(f)
        return obj
        print 'File loaded successfully.'
    except:
        print 'Failure to load specified file.'

def Login():
    global User
    global Pass
    User = raw_input('Username: ')
    Pass = raw_input('Password: ')
    if User == 'goduser' and Pass == '':
        Parsing()
    else:
        print 'Login Failure.'
        Login()

def Addrbk():
    global firstrun
    if firstrun:
        firstrun = 0
        Addressbook = load('Addressbook')
        if not Addressbook:
            Addressbook = {'Spammah01' : 'Spammaster@spamsite.spam',
                           'Spammer02' : 'Spamemails@spamspam.spam'}
    Cmd = raw_input('Command: ')

    if Cmd == 'add':
        name = raw_input('ContactName: ')
        email = raw_input('ContactEmail: ')
        Addressbook[name] = email
        Addrbk()

    if Cmd == 'remove':
        rmve = raw_input('Remove: ')
        del Addressbook[rmve]
        Addrbk()

    if Cmd == 'contacts':
        for k, v in Addressbook.iteritems():
            print 'Contact: "'+k+'" Email: "'+v+'"'
        Addrbk()

    if Cmd == 'menu':
        save(Addressbook, 'Addressbook')
        Parsing()

    if Cmd == 'help':
        Help()
        Addrbk()

    else:
        print 'That is not a recognized command or operation.'
        print 'Please access help.'

def Dice():
    Quantity = raw_input('Dice to Throw: ')
    Faces = raw_input('Number of Faces: ')
    Modifier = raw_input('Modifier to Throw: ')
    print 'Throwing '+Quantity+'d'+Faces+' + '+Modifier
    try:
        Throw = (random.randrange(1,int(Faces))*int(Quantity))+int(Modifier)
    except:
        print 'Some error/exception occurred.'
        Dice()
    print Throw

def Execute():
    text = raw_input('>')
    if text == 'menu':
        Parsing()
    try:
        exec(text)
    except:
        print 'Some error/exception occurred.'
    Execute()

def calc():
    text = raw_input('Evaluate: ')
    if text == 'menu':
        Parsing()
    try:
        print eval(text)
    except:
        'Some error/exception occurred.'
    calc()

def Help():
    print '''\
dice - Roll dice. Only accepts positive integers.
help - Access this help doc.
exit - Exit the program.
exec - Direct Python interpretation.
    + menu - Return to main.
calc - Evaluate mathematical strings.
    + menu - Return to main.
addrbook - Access the address book; automatically saves on exit.
    + add - Add a contact.  --BROKEN--
    + remove - Remove a contact.  --BROKEN--
    + contacts - List all contacts.
    + help - Access this help doc.
    + menu - Return to main.
'''

def Parsing():
    global firstrun
    global firstlog
    if firstlog:
        print 'Welcome '+User+'!'
        firstlog = 0
    Comlist = 'help_dice_exit_exec_calc_addrbook'
    Command = raw_input('Please input your command: ')
    if Comlist.find(Command) == -1:
        print 'That is not a recognized command or operation.'
        print 'Please access the help files with the command "help"'
        Parsing()
    if Command == 'help':
        Help()
        Parsing()
    if Command == 'dice':
        Dice()
        Parsing()
    if Command == 'exit':
        exit()
    if Command == 'exec':
        print 'Return to the menu via "menu"'
        Execute()
    if Command == 'calc':
        print 'Return to the menu via "menu"'
        calc()
    if Command == 'addrbook':
        print 'Return to menu via "menu"'
        firstrun = 1
        Addrbk()
    if Command == '':
        print 'That is not a recognized command or operation.'
        print 'Please access the help files with the command "help"'
        Parsing()

#End Function List#
firstlog = 1
Login()