import I2C_LCD_driver
import time
import dht11
import datetime
import RPi.GPIO as GPIO
from keypad import keypad

GPIO.setwarnings(False)
GPIO.setmode(GPIO.BOARD)

mylcd = I2C_LCD_driver.lcd()
instance = dht11.DHT11(pin=4)
mode = 0
select = 0
refresh = True
GPIO.setup(38, GPIO.OUT)
GPIO.setup(40, GPIO.OUT)
PIN_TRIGGER = 35
PIN_ECHO = 37
GPIO.setup(PIN_TRIGGER, GPIO.OUT)
GPIO.setup(PIN_ECHO, GPIO.IN)


if __name__ == '__main__':
    kp = keypad(columnCount = 3)
    GPIO.output(PIN_TRIGGER, GPIO.LOW)
    print("Waiting for sensor to settle")
    time.sleep(2)
    #
    mylcd.lcd_display_string("Press any key", 1)
    try:
        while True:
            digit = kp.getKey()
            result = instance.read()
            if mode==0:
                if digit != None or refresh == True:
                    refresh = False
                    # navigation
                    if digit==2:
                        select = select-1
                        if select<0:
                            select = 3
                        time.sleep(0.3)
                    if digit==8:
                        select = select+1
                        if select>3:
                            select = 0
                        time.sleep(0.3)
                    if digit==5:
                        mode = select+1
                        select = 0
                        continue
                    #
                    # menu
                    mylcd.lcd_clear()
                    if select==0:
                        mylcd.lcd_display_string("-> Temperatura", 1)
                        mylcd.lcd_display_string("Wilgotnosc", 2)
                    if select==1:
                        mylcd.lcd_display_string("-> Wilgotnosc", 1)
                        mylcd.lcd_display_string("Tajne haslo", 2)
                    if select==2:
                        mylcd.lcd_display_string("-> Tajne haslo", 1)
                        mylcd.lcd_display_string("Odleglosc", 2)
                    if select==3:
                        mylcd.lcd_display_string("-> Odleglosc", 1)
                        mylcd.lcd_display_string("Temperatura", 2)
                    #print("Last valid input: " + str(datetime.datetime.now()))
                    #print("menu")
            if mode==1:
                if result.is_valid():
                    mylcd.lcd_clear()
                    mylcd.lcd_display_string("%-3.1f C" % result.temperature)
                    time.sleep(0.5)
                if digit != None:
                    if digit=="#":
                        mode = 0
            if mode==2:
                if result.is_valid():
                    mylcd.lcd_clear()
                    mylcd.lcd_display_string("%-3.1f %%" % result.humidity)
                    time.sleep(0.5)
                if digit != None:
                    if digit=="#":
                        mode = 0
            if mode==3:
                time.sleep(0.4)
                passwd = []
                for i in range(4):
                    mylcd.lcd_clear()
                    digit = None
                    if i==0:
                        mylcd.lcd_display_string("Pass: ", 1)
                    if i==1:
                        mylcd.lcd_display_string("Pass: *", 1)
                    if i==2:
                        mylcd.lcd_display_string("Pass: **", 1)
                    if i==3:
                        mylcd.lcd_display_string("Pass: ***", 1)
                    while digit == None:
                        digit = kp.getKey()
                        if digit == "#":
                            mode = 0
                            refresh = True
                            continue
                    passwd.append(digit)
                    time.sleep(0.4)
                mylcd.lcd_clear()
                if passwd == [1, 2, 3, 4]:
                    GPIO.output(38, 1)
                    mylcd.lcd_display_string("GOOD", 1)
                else:
                    GPIO.output(40, 1)
                    mylcd.lcd_display_string("HEHE NOPE!", 1)
                time.sleep(2)
                GPIO.output(38, 0)
                GPIO.output(40, 0)
                mode = 0
                refresh = True
            if mode==4:
                mylcd.lcd_clear()
                GPIO.output(PIN_TRIGGER, GPIO.HIGH)
                time.sleep(0.00001)
                GPIO.output(PIN_TRIGGER, GPIO.LOW)
                while GPIO.input(PIN_ECHO)==0:
                    pulse_start_time = time.time()
                while GPIO.input(PIN_ECHO)==1:
                    pulse_end_time = time.time()
                pulse_duration = pulse_end_time - pulse_start_time
                distance = str(round(pulse_duration * 17150, 2))
                mylcd.lcd_display_string(distance, 1)
                time.sleep(0.4)
                digit = kp.getKey()
                if digit == "#":
                    mode = 0
                    refresh = True
                    continue

    except KeyboardInterrupt:
        print("Cleanup")
        GPIO.cleanup()