import time
import urequests
import dht
from machine import Pin, PWM

# Wi-Fi settings
WIFI_SSID = "Wokwi-GUEST"
WIFI_PASSWORD = ""

# ThingSpeak settings
THING_SPEAK_API_KEY = "2308799"
THING_SPEAK_URL = "https://api.thingspeak.com/update"
THING_SPEAK_API_KEY = "Y5D386LU3W5X66Y2"

THING_SPEAK_FIELD1 = "field1"
THING_SPEAK_FIELD2 = "field2"

# LED pins
LED1_PIN = 21  # Replace with the GPIO pin connected to LED1
LED2_PIN = 22  # Replace with the GPIO pin connected to LED2

LED1 = PWM(Pin(LED1_PIN), freq=1000, duty=0)
LED2 = PWM(Pin(LED2_PIN), freq=1000, duty=0)

# DHT sensor settings
DHT_PIN = 2  # Replace with the GPIO pin connected to the DHT22 sensor
dht_sensor = dht.DHT22(Pin(DHT_PIN))

def connect_to_wifi():
    import network
    wlan = network.WLAN(network.STA_IF)
    if not wlan.isconnected():
        print("Connecting to WiFi...")
        wlan.active(True)
        wlan.connect(WIFI_SSID, WIFI_PASSWORD)
        while not wlan.isconnected():
            pass
    print("Connected to WiFi")

def read_sensor_data():
    dht_sensor.measure()
    temperature = dht_sensor.temperature()
    humidity = dht_sensor.humidity()
    return temperature, humidity

def publish_to_thingspeak(temperature, humidity):
    url = "{}?{}={:.2f}&{}={:.2f}&api_key={}".format(
        THING_SPEAK_URL,
        THING_SPEAK_FIELD1, temperature,
        THING_SPEAK_FIELD2, humidity,
        THING_SPEAK_API_KEY
    )
    print("Sending data to ThingSpeak:", url)  # Debug line
    response = urequests.get(url)
    print("ThingSpeak response:", response.text)  # Debug line
    response.close()

def control_leds(temperature, humidity):
    if temperature > 25.0 and humidity > 70.0:
        print("Air quality might be poor (high temperature and humidity).")
        LED1.duty(1023)  # Full brightness for LED1
        LED2.duty(0)     # LED2 off
    elif temperature < 20.0 and humidity < 30.0:
        print("Air quality might be poor (low temperature and humidity).")
        LED1.duty(0)     # LED1 off
        LED2.duty(1023)  # Full brightness for LED2
    else:
        print("Air quality appears to be normal.")
        LED1.duty(0)     # LED1 off
        LED2.duty(0)     # LED2 off

def main():
    connect_to_wifi()
    
    while True:
        temperature, humidity = read_sensor_data()
        print("Temperature: {:.2f}°C".format(temperature))
        print("Humidity: {:.2f}%".format(humidity))
        
        publish_to_thingspeak(temperature, humidity)
        control_leds(temperature, humidity)
        
        time.sleep(15)  # Delay for the next measurement (15 seconds)

if __name__ == "__main__":
    main()