from machine import Pin, PWM, I2C
import ssd1306
import urequests as requests
import time
import network

# Configuración de WiFi y WhatsApp
WIFI_SSID = "Wokwi-GUEST"
WIFI_PASSWORD = ""
API_URL = "https://api.callmebot.com/whatsapp.php"
PHONE_NUMBER = "+50432264330"
API_KEY = "9850545"
MESSAGE_ACTIVE = "SISTEMA ACTIVO!!"
MESSAGE_OPEN = "La puerta se ha abierto."
MESSAGE_CLOSED = "La puerta se ha cerrado."

# Configuración del servo
pwm = PWM(Pin(18), freq=50)

# Configuración del LED y Boton
led = Pin(12, Pin.OUT)
boton = Pin(4, Pin.IN, Pin.PULL_DOWN)

# Configuración del I2C para la pantalla OLED
i2c = I2C(0, scl=Pin(27), sda=Pin(14), freq=400000)
oled = ssd1306.SSD1306_I2C(128, 64, i2c)

def connectWifi():
  wlan = network.WLAN(network.STA_IF)
  wlan.active(True)
  if not wlan.isconnected():
    print('Conectando a la red WiFi...')
    wlan.connect(WIFI_SSID, WIFI_PASSWORD)
    while not wlan.isconnected():
      time.sleep(1)
  print('Conectado a la red WiFi:', WIFI_SSID)

def whatsapp(message):
  encoded_message = message.replace(" ", "+")
  url = "{}?phone={}&text={}&apikey={}".format(API_URL, PHONE_NUMBER, encoded_message, API_KEY)
  try:
    response = requests.get(url)
    if response.status_code == 200:
      print("Mensaje enviado:", message)
    else:
      print("Error al enviar el mensaje:", response.text)
  except Exception as e:
    print("Excepción al enviar el mensaje:", e)

def servo(angle):
  duty = int(((angle / 180) * 2 + 0.5) * (1023 / 20))
  pwm.duty(duty)

def display(line1, line2):
    oled.fill(0)
    oled.text(line1, 30, 10)
    oled.text(line2, 30, 30)
    oled.show()

# Conectar a WiFi
connectWifi()

# Inicio 
display("Sistema", "Activado")
servo(0)
whatsapp(MESSAGE_ACTIVE)  
time.sleep(5)
on = False

while True:
  if boton.value() == 1:
    if not on:
        servo(90)
        led.on() 
        on = True 
        display("", "BIENVENIDO")
        whatsapp(MESSAGE_OPEN)  
        time.sleep(0.2) 
    else:
        servo(0)
        led.off()
        on = False
        display("Acceso", "Restringido")
        whatsapp(MESSAGE_CLOSED)  
        time.sleep(0.2)