import datetime as dt
import RPi.GPIO as GPIO
import Adafruit_CharLCD as LCD

class LCDSchedule:

	def __init__(self):
		# initialize timer

		# initialize variable for messages to lcd
		self.msg_row_1 = ""
		self.msg_row_2 = ""

		# initialize lcd
		lcd_rs	=	9
		lcd_en	=	22
		lcd_d4	=	25
		lcd_d5	=	24
		lcd_d6	=	23
		lcd_d7	=	20
		lcd_bl	=	2

		lcd_col	=	16
		lcd_row	=	2
		self.lcd = LCD.Adafruit_CharLCD(lcd_rs, lcd_en, lcd_d4, lcd_d5, lcd_d6, lcd_d7, lcd_col, lcd_row, lcd_bl)

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

		#set initialz message
		self.msg_row_1 = "SYSTEM STARTING:\n"
		self.msg_row_2 = cur_time

		self.lcd.clear()
		self.lcd.message(self.msg_row_1)
		self.lcd.message(self.msg_row_2)

	def teardown(self):

		# clear LCD on program failure
		self.lcd.clear();

	def showMessage(self, display_message_top, display_message_btm):

		# clear lcd
		self.lcd.clear()

		# print message to lcd
		self.lcd.message(display_message_top + display_message_btm)