import machine
import dht
import network
import urequests
import time
import random

# Konfigurasi WiFi
SSID = 'Wokwi-GUEST'          
PASSWORD = ''  
API_KEY = '9FPF1XQYU0I6NIP7' 
CHANNEL_ID = 3157022       
THINGSPEAK_URL = 'http://api.thingspeak.com/update'

DHT_PIN = machine.Pin(15)        
FAN_PIN = machine.Pin(5, machine.Pin.OUT)  
ZMPT_PIN = machine.Pin(34)      
SCT_PIN = machine.Pin(35) 
HEATER_PIN = machine.Pin(25, machine.Pin.OUT)     

dht_sensor = dht.DHT22(DHT_PIN)
MIN_TEMP = 30.0
MAX_TEMP = 43.0
dummy_voltages = [180, 210, 220, 230]

def connect_wifi():
    wlan = network.WLAN(network.STA_IF)
    wlan.active(True)
    wlan.connect(SSID, PASSWORD)
    while not wlan.isconnected():
        time.sleep(1)
    print('Connected to WiFi')

# Setup
connect_wifi()
FAN_PIN.value(0)
HEATER_PIN.value(0)  

while True:
    try:
        
        dht_sensor.measure()
        temperature = dht_sensor.temperature()
        humidity = dht_sensor.humidity()
        
        print(f'Temperature: {temperature}°C, Humidity: {humidity}%')
        
        
        if temperature < MIN_TEMP or temperature > MAX_TEMP:
            print('Temperature out of range!')

        dummy_voltage = random.choice(dummy_voltages)

        if temperature > MAX_TEMP:
            HEATER_PIN.value(1)
            dummy_voltage = 220;
            print('Voltage out of range!')
            heater_status = "Heater aktif"
        else :
            HEATER_PIN.value(0)
            heater_status = "Heater tidak aktif"

        if temperature < MIN_TEMP:
            HEATER_PIN.value(0)
            dummy_voltage = 180;
            print('Voltage below of range!')
            heater_status = "Heater tidak aktif"
        else :
            HEATER_PIN.value(1)
            heater_status = "Heater aktif"

        print(f'Voltage ZMPT101B: {dummy_voltage}V - {heater_status}')  

        if temperature > MAX_TEMP:
            FAN_PIN.value(1)  
            dummy_current = 2.5  
            print('Exhaust Fan ON')
        else:
            FAN_PIN.value(0)  
            dummy_current = 0.0  
            print('Exhaust Fan OFF')
        
        url = f'{THINGSPEAK_URL}?api_key={API_KEY}&field1={temperature}&field2={humidity}&field3={dummy_voltage}&field4={dummy_current}'
        response = urequests.get(url)
        if response.status_code == 200:
            print('Data sent to Thingspeak')
        else:
            print('Error sending data to Thingspeak')
        response.close()
        
    except Exception as e:
        print(f'Error: {e}')
    
    time.sleep(5)