from machine import Pin
import time
# Thu vien bat dong bo
import uasyncio as asyncio
import dht
import network
import urequests as requests

# Khai bao 2 den
led = Pin(14, Pin.OUT)

# Chan cam bien
d = dht.DHT22(Pin(18))

# cam bien chuyen dong 16
motion = Pin(16, Pin.IN)
led_motion = Pin(2, Pin.OUT)

# Ket noi wifi
print("Connecting to WiFi", end="")
sta_if = network.WLAN(network.STA_IF)
sta_if.active(True)
sta_if.connect('Wokwi-GUEST', '')
while not sta_if.isconnected():
  print(".", end="")
  time.sleep(0.1)
print(" Connected!")

# Tao bien luu trang thai wifi
is_connected = False

# Lay thong tin moi truong
async def get_env():
    global is_connected
    while True:
        d.measure()
        t = d.temperature() # nhiet do
        h = d.humidity()   # do am
        print(t, h)
        # Co ket noi internet moi day len thingspeak
        if(is_connected):
            # https://api.thingspeak.com/update?api_key=MZW05049NHHQGK9O&field1=40&field2=50
            res = requests.get(url=f'http://api.thingspeak.com/update?api_key=MZW05049NHHQGK9O&field1={t}&field2={h}')
            del res # giai phong bo nho
        await asyncio.sleep(30)


async def status_led():
    led_status = False
    global is_connected
    while True:
        is_connected = sta_if.isconnected()
        if(is_connected == True):
            led.on()
        else:
            # Goi den ham -> reconnect wifi
            if(led_status):
                led.off()
            else:
                led.on()
            led_status = not led_status
        await asyncio.sleep(0.5)


async def detect_motion():
    while True:
        v = motion.value()
        if(v == 1):
            led_motion.on()
        else:
            led_motion.off()
        await asyncio.sleep(1)


loop = asyncio.get_event_loop()
loop.create_task(status_led())
loop.create_task(detect_motion())
loop.create_task(get_env())

loop.run_forever()