import machine
import time
import urequests as requests
import network
import ujson
import dht

#thingspeak setting
THINGSPEAK_API_KEY = "DENJCQY50F2YTYN37"
THINGSPEAK_URL="http://api.thingspeak.com/update"

#wifi settings
WIFI_SSID="wokwi-GUEST"
WIFI_PASSWORD=""

#dht22 settings
dht_sensor=dht.DHT22(machine.pin(4))

#function to read the dht data
def read_room_temperature_humidity():
    dht_sensor.measure()
    temperature=dht_sensor.temperature()
    humidity=dht.dht_sensor.humidity()
    return temperature,humidity

#function to send data to thingspeak
def send_data_to_thingspeak(temperature,humidity):
    data={
        "api_key":THINGSPEAK_API_KEY,
        "field1":temperature,
        "field2":humidity
    } 
    response=urequest.post(THINGSPEAK_URL,data=json.dumps(data),headers={"content-type":"application/json"})
    response.close()
#initialize the wifi connection
wifi=network.WLAN(network.STA_IF)
wifi.active(True)
wifi.connect(WIFI_SSID,WIFI_PASSWORD)
while not wifi.isconnected():
    time.sleep(1)


print("wifi is connected")

if __name__=="__main__":
    try:
        while True:
            temperature,humidity=read_room_temperature_humidity()
            send_data_to_thingspeak(temperature,humidity)
            print("data is send to thingspeak")
            time.sleep(15)
    except keyboardinterrupt:
        pass