print("Project Temperature in Server Room")
print("By: Nazmi Roslam")
print("Date: 29/4/2024")

# Import libraries
import oled_library
import servo_motor
from machine import Pin, SoftI2C, PWM, ADC
import dht
from utime import sleep

# Pin declaration
oled_pin = SoftI2C(scl=Pin(22), sda=Pin(21))
dht_pin = Pin(4, Pin.IN, Pin.OUT) 
RED_LED = Pin(13, Pin.OUT)
YELLOW_LED = Pin(12, Pin.OUT)
Buzzer_Pin = PWM(Pin(2, Pin.OUT))
servo_pin = Pin(5, Pin.OUT)
Photoresistor_Pin = ADC(Pin(35))

# Create objects
skrin = oled_library.SSD1306_I2C(width=128, height=64, i2c=oled_pin)
dht_sensor = dht.DHT22(dht_pin)
door_alarms = servo_motor.Servo(pin=servo_pin)

# Main program loop
while True:
    skrin.fill(0)
    skrin.text("Temperature", 5, 10, 1)
    skrin.text("Server Room", 20, 20, 1)
    RED_LED.off()
    YELLOW_LED.off()
    Buzzer_Pin.duty(0)

    try:
        dht_sensor.measure()
        temperature = dht_sensor.temperature()
        humidity = dht_sensor.humidity()
        light = Photoresistor_Pin.read()

        print("Light intensity:", light)  

        if light > 500:  
            print("Fire detected!")
            skrin.text("Fire Detected", 10, 40, 1)
            YELLOW_LED.on() 
            Buzzer_Pin.duty(150)
            door_alarms.move(angle=0)
            sleep(2)  
            continue

        if 61 <= temperature <= 71 and 8 <= humidity <= 80:
            skrin.text("Normal Range Temp", 10, 40, 1)
            door_alarms.move(angle=90)  

        elif temperature > 71 or humidity < 8 or humidity > 80:
            if temperature > 71:
                skrin.text("Danger High Temp", 10, 40, 1)
            elif humidity < 8:
                skrin.text("Low Humidity Warning", 10, 40, 1)
            elif humidity > 80:
                skrin.text("High Humidity Warning", 10, 40, 1)
            RED_LED.on()
            Buzzer_Pin.duty(150)
            door_alarms.move(angle=0)

        elif temperature < 61:
            skrin.text("Alert Temp Drop", 10, 40, 1)
            RED_LED.on()
            Buzzer_Pin.duty(150)
            door_alarms.move(angle=0)
        
        skrin.text("Temp: {:.1f}C".format(temperature), 10, 50, 1)
        skrin.text("Humidity: {:.1f}%".format(humidity), 10, 60, 1)

    except OSError as error:
        print("Failed to read DHT22:", error)
        skrin.text("Sensor Error", 10, 80, 1)

    skrin.show()  
    sleep(1)