import time
import datetime
import pifacedigitalio as p

# Configures interval
START = datetime.time(17, 0, 0)
END = datetime.time(23, 59, 0)

TREE = """
           *             ,
                       _/^\_
                      <     >
     *                 /.-.\         *
              *        `/&\`                   *
                      ,@.*;@,
                     /_o.I %_\    *
        *           (`'--:o(_@;
                   /`;--.,__ `')             *
                  ;@`o % O,*`'`&\  *
            *    (`'--)_@ ;o %'()\      *
                 /`;--._`''--._O'@;
                /&*,()~o`;-.,_ `""`)
     *          /`,@ ;+& () o*`;-';\    *
               (`""--.,_0 +% @' &()\   *
               /-.,_    ``''--....-'`)  *
          *    /@%;o`:;'--,.__   __.'\
              ;*,&(); @ % &^;~`"`o;@();         *
              /(); o^~; & ().o@*&`;&%O\
        jgs   `"="==""==,,,.,="=="==="`
           __.----.(\-''#####---...___...-----._
         '`         \)_`'''''`
                 .--' ')
               o(  )_-
                 `'''` `
"""


def timestamp():
    """ Get a timestamp """
    return datetime.datetime.now()


def turn_on():
    """ Turn on the christmas tree """
    print("{} ON".format(timestamp()))
    p.digital_write(0, 1)


def turn_off():
    """ Turn off the christmas tree """
    print("{} OFF".format(timestamp()))
    p.digital_write(0, 0)


def update():
    """ Updates the state """
    now = datetime.datetime.now().time()
    if START <= now <= END:
        turn_on()
    else:
        turn_off()


def check_connectivity():
    """ Flick the switch """
    print("Checking connectivity:")
    for i in range(2):
        turn_on()
        time.sleep(2)
        turn_off()
        time.sleep(2)


if __name__ == "__main__":
    # Connect to PiFace
    print(TREE)
    p.init()

    # Check connectivity
    check_connectivity()

    # Message
    print()
    print("Starting scheduler:")
    print("Xmas enabled between {} and {}.".format(
        START.strftime("%H:%M"), END.strftime("%H:%M")))

    # Run the event loop
    while (True):
        update()
        time.sleep(60)