Sudo Make Some Toast

from twython import Twython
import json
import time
import datetime
import RPi.GPIO as GPIO
#toast for 2 min
#tweet: "sudo make_some_toast -t 5:15"
GPIO.setmode(GPIO.BCM)
GPIO.setup(4,GPIO.OUT)
GPIO.output(4,GPIO.HIGH)
app_key = "secret"
app_secret = "secret"
oauth_token = "secret"
oauth_token_secret = "secret"
twitter = Twython(app_key,app_secret,oauth_token,oauth_token_secret)
previous = "null"
messageC = "null"
enabled = False
minTill = 0
goalTimeM = 0
goalTimeH = 0

tt = datetime.datetime.now()
tt = tt.timetuple()

prevMin = tt[4]

def getCurrent():
    tt = datetime.datetime.now()
    tt = tt.timetuple()
    hour = int(tt[3])
    minute = int(tt[4])
    return hour, minute
def check_twitter():
    global minTill
    global goalTimeM
    global goalTimeH
    global previous
    global messageC
    global enabled
    json_file = json.dumps(twitter.get_home_timeline()[0])

    data = json.loads(json_file)
    current_message = data["text"]
    messageC = current_message
    print current_message
    if previous != current_message:
        previous = current_message
        current_message = current_message.lower()
        split_message = current_message.split()
        if split_message[0] == "sudo":
            if split_message[2] == "-t":
                timeTill = split_message[3]
                if timeTill == "now":
                    print "Making toast now"
                elif timeTill != "now":
                    split_time = timeTill.split(':')
                    goalTimeH = int(split_time[0])
                    goalTimeM = int(split_time[1])
                    goalTimeM += (goalTimeH * 60)
                    print "Your toast will start in: " + str(goalTimeM) + " minutes."
                    enabled = True
    elif previous == current_message:
        print "Already done." 
    previous = current_message
while 1:
    Chour, Cminute = getCurrent()
    if Cminute != prevMin:
        check_twitter()
        if enabled == True:
            if goalTimeM != 0:
                minTill += 1
                if goalTimeM == minTill:
                    print "Making toast!"
                    GPIO.output(4,GPIO.LOW)
                    time.sleep(2*60) #2 minutes
                    GPIO.output(4,GPIO.HIGH)
                    minTill = 0
                    goalTime = 0
                    enabled = False
    prevMin = Cminute
    time.sleep(1)