from machine import Pin
import network
import urequests
import time
import sys
from dht import DHT22

# ------------------ DHT SENSOR SETUP ------------------
dht22 = DHT22(Pin(12))

def readDht():
    dht22.measure()
    return dht22.temperature(), dht22.humidity()

# ------------------ WIFI CREDENTIALS ------------------
WIFI_SSID = "Wokwi-GUEST"
WIFI_PASSWORD = ""

# ------------------ WIFI CONNECTION ------------------
def connect_wifi():
    wifi = network.WLAN(network.STA_IF)
    wifi.active(True)
    wifi.connect(WIFI_SSID, WIFI_PASSWORD)

    print("Connecting to WiFi...")
    timeout = 10
    while not wifi.isconnected() and timeout > 0:
        print("Waiting...", timeout)
        timeout -= 1
        time.sleep(1)

    if not wifi.isconnected():
        print("WiFi connection failed")
        sys.exit()

    print("Connected!")
    print("IP:", wifi.ifconfig()[0])

connect_wifi()

# ------------------ THINGSPEAK CONFIG ------------------
THINGSPEAK_WRITE_API_KEY = "SNIPI34MTSGD6OQF"

THINGSPEAK_URL = "http://api.thingspeak.com/update"

# ------------------ MAIN LOOP ------------------
while True:
    try:
        temp, hum = readDht()

        print("Temperature:", temp)
        print("Humidity:", hum)

        # Build URL with query params
        url = "{}?api_key={}&field1={}&field2={}".format(
            THINGSPEAK_URL,
            THINGSPEAK_WRITE_API_KEY,
            temp,
            hum
        )

        response = urequests.get(url)
        response.close()

        print("Data sent to ThingSpeak")
        print("---------------------------")

    except Exception as e:
        print("Error:", e)

    time.sleep(15)  # ThingSpeak minimum interval = 15 sec