from machine import Pin, ADC, PWM, I2C
import dht
import time
import network
import blynklib as BlynkLib
from machine_i2c_lcd import I2cLcd 

# =========================
# KONFIGURASI BLYNK & WIFI
# =========================
# Masukkan Token dari Blynk Console
BLYNK_AUTH = '4mGn4o_Je8O307Y4hc8ICz-LxGopM0wJ'

# Koneksi WiFi Wokwi
print("Menghubungkan ke WiFi...", end="")
sta_if = network.WLAN(network.STA_IF)
sta_if.active(True)
sta_if.connect('Wokwi-GUEST', '')
while not sta_if.isconnected():
    print(".", end="")
    time.sleep(0.1)
print(" Terhubung!")

# Inisialisasi Blynk
blynk = BlynkLib.Blynk(BLYNK_AUTH)

# =========================
# PENGATURAN LCD I2C
# =========================
I2C_ADDR = 0x27
i2c = I2C(0, sda=Pin(21), scl=Pin(22), freq=400000)
lcd = I2cLcd(i2c, I2C_ADDR, 2, 16)

# =========================
# PENGATURAN PIN
# =========================
pir = Pin(13, Pin.IN)
ldr = Pin(27, Pin.IN)
lamp = Pin(2, Pin.OUT)
fan = Pin(4, Pin.OUT)
fan.value(1)  # OFF awal (Active Low)
buzzer = PWM(Pin(5))
dht_sensor = dht.DHT22(Pin(15))

# =========================
# THRESHOLD
# =========================
TEMP_FAN = 30
TEMP_BUZZER = 35

def buzzer_off():
    buzzer.duty(0)

def beep_fast():
    buzzer.freq(2000)
    buzzer.duty(512)
    time.sleep(0.1)
    buzzer.duty(0)

# Tampilan Awal
lcd.clear()
lcd.putstr("Syamsul Arifin\nSystem Siap")
time.sleep(2)

last_blynk_update = 0

# =========================
# LOOP UTAMA
# =========================
while True:
    # Jalankan Blynk
    blynk.run()
    
    try:
        # Baca Sensor
        dht_sensor.measure()
        temp = dht_sensor.temperature()
        hum = dht_sensor.humidity()
        motion = pir.value()
        light = ldr.value()

        # Logika Lampu
        if motion == 1 and light == 1:
            lamp.on()
            status_lamp = 1 # Untuk Blynk (Gunakan Integer/Value)
            str_lamp = "ON "
        else:
            lamp.off()
            status_lamp = 0
            str_lamp = "OFF"

        # Logika Fan (Relay Active Low)
        if temp > TEMP_FAN:
            fan.value(0)
            status_fan = 1
            str_fan = "ON "
        else:
            fan.value(1)
            status_fan = 0
            str_fan = "OFF"

        # Logika Buzzer
        if temp > TEMP_BUZZER:
            beep_fast()
        else:
            buzzer_off()

        # Update LCD
        lcd.move_to(0, 0)
        lcd.putstr("T:{:.1f}C H:{:.0f}%".format(temp, hum))
        lcd.move_to(0, 1)
        lcd.putstr("L:{} F:{}".format(str_lamp, str_fan))

        # Kirim data ke Blynk setiap 2 detik (agar tidak spamming/flood)
        if time.ticks_ms() - last_blynk_update > 2000:
            blynk.virtual_write(1, temp)        # V1: Suhu
            blynk.virtual_write(2, hum)         # V2: Kelembapan
            blynk.virtual_write(3, status_lamp) # V3: Status Lampu
            blynk.virtual_write(4, status_fan)  # V4: Status Kipas
            last_blynk_update = time.ticks_ms()
            print("Data terkirim ke Blynk: T:{} H:{}".format(temp, hum))

    except Exception as e:
        print("Error:", e)
        time.sleep(1)

    time.sleep(0.1) # Loop kecil agar Blynk tetap responsif