import network
import time
import blynklib
from machine import Pin, ADC, PWM
import dht

# ---------------- WiFi and Blynk setup ----------------
WIFI_SSID = "Wokwi-GUEST"
WIFI_PASS = ""
BLYNK_AUTH = "Xlc8GVWM0auSkwVjCjOChj1esHZZiosf"  # your Blynk token

print("Connecting to WiFi...")
sta_if = network.WLAN(network.STA_IF)
sta_if.active(True)
sta_if.connect(WIFI_SSID, WIFI_PASS)
while not sta_if.isconnected():
    time.sleep(0.5)
print("✅ WiFi connected:", sta_if.ifconfig())

blynk = blynklib.Blynk(BLYNK_AUTH)

# ---------------- Sensor & Actuator setup ----------------
pir = Pin(14, Pin.IN)
ldr = ADC(Pin(34)); ldr.atten(ADC.ATTN_11DB)
gas = ADC(Pin(35)); gas.atten(ADC.ATTN_11DB)
dht_sensor = dht.DHT22(Pin(27))
light = Pin(2, Pin.OUT)
fan = Pin(4, Pin.OUT)
buzzer = Pin(19, Pin.OUT)
door = Pin(22, Pin.OUT)

# ---------------- Main Loop ----------------
print("🏠 Smart Home Started")
while True:
    blynk.run()
    try:
        dht_sensor.measure()
        temp = dht_sensor.temperature()
        hum = dht_sensor.humidity()
        gas_val = gas.read()
        ldr_val = ldr.read()
        motion = pir.value()
    except:
        temp, hum = 0, 0

    @blynk.on("V6")  # Light control button in Blynk app
    def v10_handler(value):
     if int(value[0]) == 1:
            light.value(1)
     else:
        light.value(0)

    @blynk.on("V7")  # Fan control
    def v11_handler(value):
     if int(value[0]) == 1:
            fan.value(1)
     else:
        fan.value(0)

    @blynk.on("V9")  # Buzzer control
    def v12_handler(value):
        if int(value[0]) == 1:
            buzzer.value(1)
        else:
            buzzer.value(0)
    @blynk.on("V8")  # door control
    def v12_handler(value):
        if int(value[0]) == 1:
            door.value(1)
        else:
         door.value(0)

    print("Temp:", temp, "°C | Hum:", hum, "% | Gas:", gas_val, "| LDR:", ldr_val, "| PIR:", motion)

    # Auto control
    if motion == 1 and ldr_val > 1000:
        light.value(1)
    else:
        light.value(0)

    if temp > 28:
        fan.value(1)
    else:
        fan.value(0)

    if gas_val > 800:
        buzzer.value(1)
    else:
        buzzer.value(0)

    # Send values to Blynk
    blynk.virtual_write(1, temp)
    blynk.virtual_write(2, hum)
    blynk.virtual_write(3, gas_val)
    blynk.virtual_write(4, ldr_val)
    blynk.virtual_write(5, motion)

    time.sleep(2)