"""Senses vibration and sends text after timeout"""
import time
import datetime
import logging
import RPi.GPIO as GPIO
from twilio.rest import Client

# pip3 install twilio

#global vars
BUTTON = 5
SENSOR = 25
LED = 13
WASHERLED = 6
INTERVAL = 5 # frequency to check
STARTTIME = None
DELTA = None
WASHING = False
TIMESTOPPED = False
SMSNUMBERS = ["+1111111111", "+222222222222"]


#setup pins
GPIO.setwarnings(False)
GPIO.setmode(GPIO.BCM)
GPIO.setup(SENSOR, GPIO.IN) # setup vibration sensor
GPIO.setup(LED, GPIO.OUT) # setup LED
GPIO.setup(WASHERLED, GPIO.OUT) # setup WASHERLED
GPIO.setup(BUTTON, GPIO.IN, pull_up_down=GPIO.PUD_DOWN) # pulldown to prevent bouncing

# sensor up or down
GPIO.add_event_detect(SENSOR, GPIO.RISING, bouncetime=200)

# Configure debugging journal file on RPi
logging.basicConfig(filename='/home/pi/washer.log',
                    level=logging.INFO,
                    filemode='w',
                    format='%(asctime)s %(levelname)s:%(message)s')
GPIO.output(LED, True) # LED off
GPIO.output(WASHERLED, False) # LED on
time.sleep(.5)
GPIO.output(LED, False) # LED on
GPIO.output(WASHERLED, True) # LED off
time.sleep(.5)
GPIO.output(LED, True) # LED off
GPIO.output(WASHERLED, False) # LED on
time.sleep(.5)
GPIO.output(LED, False) # LED on
GPIO.output(WASHERLED, True) # LED off
time.sleep(.5)
logging.info("*******************")
logging.info("*  System Loaded  *")
logging.info("*******************")
print("*******************")
print("*  System Loaded  *")
print("*******************")



# function to send SMS alert
def sendalert():
    """sends alerts via twilio"""
    account_sid = "xxxxxxxxx"
    auth_token = "yyyyyyyyy"
    client = Client(account_sid, auth_token)
    for i in SMSNUMBERS:
        client.messages.create(
            to=i,
            from_="+1333333333333",
            body="LAUNDRY COMPLETED")
    logging.info("  Alert attempted")
    print("  Alert attempted")

def buttonpress(channel):
    """callback for button presses"""
    global WASHING
    #blink a few times
    GPIO.output(LED, True) # LED off
    time.sleep(.050)
    GPIO.output(LED, False) # LED on
    time.sleep(.050)
    # switch vars and send logs
    if GPIO.input(channel):
        logging.info("Button Pressed")
        print("  Button Pressed")
        if WASHING:
            WASHING = False
            GPIO.output(WASHERLED, True) # LED off
            logging.info("  Washing is stopping")
            print("  Washing is stopping after " + str(DELTA))
        else:
            WASHING = True
            logging.info("  Washing is starting")
            print("  Washing is starting at " + str(datetime.datetime.now().strftime("%Y-%m-%d %H:%M:%S")))
            GPIO.output(WASHERLED, False) # LED on

# Tie callback to button events
GPIO.add_event_detect(BUTTON, GPIO.BOTH, bouncetime=300)  # let us know if pin goes high or low
GPIO.add_event_callback(BUTTON, buttonpress) #assign function on change

# main loop
while True:
    # main loop
    time.sleep(INTERVAL) #keep CPU down while doing nothing
    while WASHING:
        GPIO.output(LED, True) # LED off
        time.sleep(1) # short pause
        GPIO.output(LED, False) # LED on
        time.sleep(1) # short pause
        # check status of vibration sensor
        if not GPIO.event_detected(SENSOR):  # no  motion
            if TIMESTOPPED:
                #logging.info("  No motion detected x" + str(STILLCOUNT))
                DELTA = datetime.datetime.now() - STARTTIME    # gives you a timedelta
                print("  No motion detected for " + str(DELTA))
            else:
                TIMESTOPPED = True
                STARTTIME = datetime.datetime.now()
        else: # still washing
            STARTTIME = None
            DELTA = None
            TIMESTOPPED = False
            print("  Motion detected")
        if ((DELTA) and (DELTA > datetime.timedelta(minutes=12))): # end of wash cycle
            logging.info("  Sending alert")
            print("  Sending alert")
            sendalert()
            GPIO.output(LED, False) # LED on
            GPIO.output(WASHERLED, True) # WASHERLED off
            logging.info("  Exiting washing mode after " +str(DELTA) )
            print("  Exiting washing mode after " + str(DELTA))
            WASHING = False
            TIMESTOPPED = False
            STARTTIME = None
            DELTA = None