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

# ===============================
# WIFI & SERVER
# ===============================
ssid = 'Wokwi-GUEST'
password = ''

server_url = 'https://script.google.com/macros/s/AKfycbzRc2xrPa0owl8JBQtEdfX37VeCFL_RbmDrSzfECGYtjkIO2P1HunqKyy7pItsNA4MVdQ/exec'
ntptime.host = 'pool.ntp.org'
DEVICE_NAME = "ESP32-Gudang"

# ===============================
# SENSOR SETUP
# ===============================
dht_sensor = dht.DHT22(Pin(14))
pir_sensor = Pin(13, Pin.IN)

# ===============================
# WIFI CONNECT
# ===============================
def connect_wifi():
    wlan = network.WLAN(network.STA_IF)
    wlan.active(True)
    wlan.connect(ssid, password)

    while not wlan.isconnected():
        print("Connecting WiFi...")
        time.sleep(1)

    print("WiFi Connected:", wlan.ifconfig())

# ===============================
# TIME
# ===============================
def get_ntp_time():
    try:
        ntptime.settime()
        tm = time.localtime()
        return "%04d-%02d-%02d %02d:%02d:%02d" % tm[0:6]
    except:
        return "1970-01-01 00:00:00"

# ===============================
# SEND DATA
# ===============================
def send_data(motion, suhu):
    waktu = get_ntp_time()

    print("📤 Send →", suhu, "°C | Motion:", motion)

    payload = {
        "method": "append",
        "waktu": waktu,
        "motion": motion,
        "suhu": suhu,
        "device": DEVICE_NAME
    }

    try:
        r = urequests.post(server_url, json=payload)
        r.close()
    except Exception as e:
        print("HTTP Error:", e)

# ===============================
# MAIN LOGIC (STATE MACHINE)
# ===============================
connect_wifi()
print("🚀 SYSTEM READY")

last_motion = 0
last_send = 0
SEND_INTERVAL = 10  # seconds

while True:
    now = time.time()
    motion = pir_sensor.value()

    # Read temperature
    try:
        dht_sensor.measure()
        suhu = dht_sensor.temperature()
    except:
        suhu = None

    # ---- PERIODIC TEMP SEND ----
    if now - last_send >= SEND_INTERVAL and suhu is not None:
        send_data(False, suhu)
        last_send = now

    # ---- MOTION EDGE DETECTION ----
    if motion == 1 and last_motion == 0 and suhu is not None:
        print("🚨 MOTION DETECTED!")
        send_data(True, suhu)

    last_motion = motion
    time.sleep(0.2)