import datetime as dt
import RPi.GPIO as GPIO

class LightSchedule:

    def __init__(self):

        self.status =  False
        self.lcd = None
        self.log_file = "logs/log_lighting.txt"

    def setup(self, lcd_display):

        # lighting
        GPIO.setup(5, GPIO.OUT)
        GPIO.setup(6, GPIO.OUT)
        GPIO.setup(13, GPIO.OUT)
        GPIO.setup(19, GPIO.OUT)

        # initilize to 0
        GPIO.output(5, GPIO.HIGH)
        GPIO.output(6, GPIO.HIGH)
        GPIO.output(13, GPIO.HIGH)
        GPIO.output(19, GPIO.HIGH)

        # initialize lcd for lighting
        self.lcd = lcd_display

        # log system startup
        self.log("SYS START: LIGHTING")

        # display startup on lcd
        cur_time = dt.datetime.now()
        dsp_time = cur_time.strftime("%H:%M:%S")

        msg_top = "SYS START: LIGHT\n"
        msg_btm = "{:8}".format(dsp_time)

    def teardown(self):
        # clear GPIO on program failure
        GPIO.output(5, GPIO.HIGH)
        GPIO.output(6, GPIO.HIGH)
        GPIO.output(13, GPIO.HIGH)
        GPIO.output(19, GPIO.HIGH)

    def log(self, msg):

        # get time
        cur_time = dt.datetime.now()
        date_time = cur_time.strftime("%Y/%m/%d %H:%M:%S")

        # get status
        status = self.status

        # log
        pin_5 = "0" if GPIO.input(5) else "1"
        pin_6 = "0" if GPIO.input(6) else "1"
        pin_13 = "0" if GPIO.input(13) else "1"
        pin_19 = "0" if GPIO.input(19) else "1"

        log_msg = "[ {:>22} ] : [ {} ] Status: {:1}\n".format(msg, date_time, status)
        log_msg += "[ {:>22} ] : [ {:2} {:1} ]\n".format("PIN", 5, pin_5)
        log_msg += "[ {:>22} ] : [ {:2} {:1} ]\n".format("PIN", 6, pin_6)
        log_msg += "[ {:>22} ] : [ {:2} {:1} ]\n".format("PIN", 13, pin_13)
        log_msg += "[ {:>22} ] : [ {:2} {:1} ]\n".format("PIN", 19, pin_19)

        log_file = open(self.log_file, "a")
        log_file.write(log_msg)
        log_file.close()

        # display on LCD
        dsp_status = "ON" if status else "OFF"

        msg_top = "LIGHT:       {:3}\n".format(dsp_status);
        msg_btm = "1:{:1} 2:{:1} 3:{:1} 4:{:1}".format(pin_5, pin_6, pin_13, pin_19)

        self.lcd.showMessage(msg_top, msg_btm)

        #print "[ {:>22} ] : [ {} ] Status: {:1}".format(msg, date_time, status)
        #print "[ {:>22} ] : [ {:2} {:1} ]".format("PIN", 5, pin_5)
        #print "[ {:>22} ] : [ {:2} {:1} ]".format("PIN", 6, pin_6)
        #print "[ {:>22} ] : [ {:2} {:1} ]".format("PIN", 13, pin_13)
        #print "[ {:>22} ] : [ {:2} {:1} ]".format("PIN", 19, pin_19)


    def start(self):

        # set status
        self.status = True

        # set relay on
        GPIO.output(5, GPIO.LOW)
        GPIO.output(6, GPIO.LOW)
        GPIO.output(13, GPIO.LOW)
        GPIO.output(19, GPIO.LOW)

        # call log
        self.log("LIGHTING ON")

    def stop(self):

        # set status
        self.status = False

        # set relay off
        GPIO.output(5, GPIO.HIGH)
        GPIO.output(6, GPIO.HIGH)
        GPIO.output(13, GPIO.HIGH)
        GPIO.output(19, GPIO.HIGH)

        # call log
        self.log("LIGHTING OFF")

    def update(self):
        cur_time = dt.datetime.now()
        cur_hour = cur_time.hour

        # check status
        if not self.status:

            # check time range: 20-00/24
            if cur_hour >= 20 and cur_hour < 24:

                #turn on
                self.start()

            # check time range: 00-08
            elif cur_hour >= 0 and cur_hour < 8:

                #turn on
                self.start()

            else:

                # log
                self.log("LIGHTING LOG")

        else:

            # check time range: 8-20
            if cur_hour >= 8 and cur_hour < 20:

                # turn off
                self.stop()

            else:

                # log
                self.log("LIGHTING LOG")