from machine import Pin, ADC, SoftI2C, PWM
import time
import dht
from hcsr04 import HCSR04
from lcd_i2c import I2cLcd

# Inisialisasi sensor dan aktuator
sensor_pir = Pin(13, Pin.IN)
sensor_ultrasonic = HCSR04(trigger_pin=12, echo_pin=13)
sensor_dht = dht.DHT22(Pin(4))

gas_sensor_aout = ADC(Pin(34))
gas_sensor_aout.atten(ADC.ATTN_11DB)
gas_sensor_dout = Pin(14, Pin.IN)

ldr_sensor = ADC(Pin(35))
ldr_sensor.atten(ADC.ATTN_11DB)

buzzer_pwm = PWM(Pin(25), freq=1000, duty=0)

# LCD I2C
i2c = SoftI2C(scl=Pin(22), sda=Pin(21), freq=400000)
lcd = I2cLcd(i2c, 0x27, 2, 16)

# Nada buzzer
NOTES = {
    "REST": 0,
    "C5": 523,
    "D5": 587,
    "E5": 659
}

melody = [NOTES["C5"], NOTES["D5"], NOTES["E5"]]
durations = [4, 4, 4]

def buzzer_on(freq=1000):
    buzzer_pwm.freq(freq)
    buzzer_pwm.duty(512)

def buzzer_off():
    buzzer_pwm.duty(0)

def play_warning_melody():
    for i in range(len(melody)):
        if melody[i] > 0:
            buzzer_pwm.freq(melody[i])
            buzzer_pwm.duty(512)
        else:
            buzzer_pwm.duty(0)
        time.sleep_ms(250)
    buzzer_off()

while True:
    try:
        lcd.clear()
        
        # Baca sensor
        sensor_dht.measure()
        suhu = sensor_dht.temperature()
        hum = sensor_dht.humidity()
        jarak = sensor_ultrasonic.distance_cm()
        gas_digital = gas_sensor_dout.value()
        ldr = ldr_sensor.read()
        gerakan = sensor_pir.value()

        # 1. Cek suhu dan kelembaban
        if suhu > 35 or hum < 30:
            lcd.putstr("Suhu >35C /")
            lcd.move_to(0,1)
            lcd.putstr("Hum <30%!")

        # 2. Gas terdeteksi
        if gas_digital == 1:
            lcd.clear()
            lcd.putstr("Gas Terdeteksi!")
            buzzer_on()
            time.sleep(1)
            buzzer_off()

        # 3. Gerakan + cahaya < 500
        if gerakan and ldr < 500:
            lcd.clear()
            lcd.putstr("Gerakan + Gelap!")
            play_warning_melody()

        # 4. Jarak < 10 cm (misal lemari terbuka)
        if jarak < 10:
            lcd.clear()
            lcd.putstr("Ada Yang Mendekat!")
            time.sleep(2)

        # Tampilkan status singkat
        lcd.clear()
        lcd.putstr("T:" + str(int(suhu)) + "C H:" + str(int(hum)) + "%")
        lcd.move_to(0, 1)
        lcd.putstr("LDR:" + str(ldr))
        time.sleep(3)

    except Exception as e:
        print("Error:", e)
        buzzer_off()
        lcd.clear()
        lcd.putstr("Error!")
        time.sleep(2)