import network
import dht
import time
import urequests
from machine import Pin

# Wi-Fi Configuration (Wokwi Virtual Wi-Fi)
WIFI_SSID = "Wokwi-GUEST"
WIFI_PASSWORD = ""  # No password for Wokwi-GUEST

# DHT22 Sensor Setup
dht_pin = Pin(23, Pin.IN)  # DHT22 on pin 23
sensor = dht.DHT22(dht_pin)

# Server URL to send data (This is the IP address of your Flask server on your local network)
SERVER_URL = "http://127.0.0.1:5000/update"  # Use the correct server URL from Flask

# Connect to Wi-Fi
def connect_wifi():
    wlan = network.WLAN(network.STA_IF)
    wlan.active(True)
    wlan.connect(WIFI_SSID, WIFI_PASSWORD)
    print("Connecting to Wi-Fi...")
    while not wlan.isconnected():
        time.sleep(1)
    print("Connected to Wi-Fi")
    print("IP Address: ", wlan.ifconfig()[0])

# Function to send data to the external server
def send_data_to_server(temperature, humidity):
    try:
        # Prepare the data
        data = {
            'temperature': temperature,
            'humidity': humidity
        }
        
        # Send HTTP POST request to external server
        response = urequests.post(SERVER_URL, json=data)
        
        # Print response from server (for debugging purposes)
        print(response.text)
        
        # Close the response to free memory
        response.close()
        
    except Exception as e:
        print(f"Error sending data to server: {e}")


# Main function to read sensor data and send it
def main():
    connect_wifi()

    while True:
        # Read sensor data
        sensor.measure()
        temperature = sensor.temperature()
        humidity = sensor.humidity()

        print("Temperature: {}°C, Humidity: {}%".format(temperature, humidity))

        # Send data to external server
        send_data_to_server(temperature, humidity)

        # Wait before sending the next reading (e.g., every 10 seconds)
        time.sleep(10)

# Run the main loop
if __name__ == '__main__':
    main()