from machine import Pin,I2C
from time import sleep
from pico_i2c_lcd import I2cLcd
i2c=I2C(1,sda=Pin(26),scl=Pin(27))
i2c_add=i2c.scan()
lcd=I2cLcd(i2c,i2c_add[0],2,16)
lcd.backlight_on()
lcd.clear()
entry_pir=Pin(0,Pin.IN)
exit_pir=Pin(1,Pin.IN)
max_count_led=Pin(19,Pin.OUT)
button1=Pin(7,Pin.IN,Pin.PULL_DOWN)
button2=Pin(8,Pin.IN,Pin.PULL_DOWN)
led=Pin(2,Pin.OUT)
max_theatre_count=20
theatre_count=0
entry_num=0
exit_num=0
def lcd_count_panel(number):
    lcd.move_to(7,1)
    lcd.putstr(str(number))
def max_count_indicator():
    max_count_led.value(1)
    lcd.clear()
    lcd.move_to(0,0)
    lcd.putstr("Theatre Full")
    lcd.move_to(0,1)
    lcd.putstr("Count:")
    lcd_count_panel(theatre_count)
def entry_exit_indicator():
    led.value(1)
    sleep(0.5)
    led.value(0)
while True:
    if entry_pir.value()==1:
        entry_num+=1
        entry_exit_indicator()
        if theatre_count < max_theatre_count:
            theatre_count+=1
        lcd.clear()
        lcd.move_to(0,0)
        lcd.putstr("Entry Done!")
    elif exit_pir.value()==1:
        exit_num+=1
        entry_exit_indicator()
        if theatre_count>0:
            theatre_count-=1
        lcd.clear()
        lcd.move_to(0,0)
        lcd.putstr("Exit Done")
    elif button1.value()==1:
        lcd.clear()
        lcd.move_to(0,0)
        if theatre_count>0:
            lcd.putstr("Theatre Presence")
        else:
            lcd.putstr("Theatre Empty")
        lcd.move_to(0,1)
        lcd.putstr("Count:")
        lcd_count_panel(theatre_count)
    elif button2.value()==1:
        lcd.clear()
        if theatre_count<max_theatre_count:
            lcd.move_to(0,0)
            lcd.putstr("Seats Available")
        else:
            lcd.move_to(0,0)
            lcd.putstr("Theatre Full")
        lcd.move_to(0,1)
        lcd.putstr("Count:")
        lcd_count_panel(theatre_count)
    elif theatre_count==max_theatre_count:
        max_count_indicator()
    else:
        max_count_led.value(0)
        lcd.clear()
        lcd.move_to(0,0)
        lcd.putstr("Cinema Theatre ")
    sleep(0.5)