import network
import time
import machine
import random
from umqtt.simple import MQTTClient

# --- Paramètres WiFi ---
WIFI_SSID = "Wokwi-GUEST"  # Remplace par ton vrai SSID
WIFI_PASSWORD = ""

# --- Paramètres MQTT ---
MQTT_SERVER = ""  # Adresse IP de ton broker local
MQTT_PORT = 8883  # Port SSL/TLS
CLIENT_ID = ""
TOPIC_PUB = b"esp32/h/temp"
TOPIC_SUB = b"esp32/h/commande"
MQTT_USER = ""
MQTT_PASSWORD = ""

# --- Connexion WiFi ---
def connect_wifi():
    wlan = network.WLAN(network.STA_IF)
    wlan.active(True)
    if not wlan.isconnected():
        print("Connexion au WiFi...")
        wlan.connect(WIFI_SSID, WIFI_PASSWORD)
        while not wlan.isconnected():
            time.sleep(0.5)
            print(".", end="")
    print("\nConnecté au WiFi:", wlan.ifconfig())

# --- Callback lors de la réception d'un message MQTT ---
def mqtt_callback(topic, msg):
    print("Message reçu - Topic:", topic.decode(), "Message:", msg.decode())

# --- Connexion MQTT ---
def connect_mqtt():
    client = MQTTClient(
        client_id=CLIENT_ID,
        server=MQTT_SERVER,
        port=MQTT_PORT,
        user=MQTT_USER,
        password=MQTT_PASSWORD,
        keepalive=60,
        ssl=True,  # Activation du SSL
        ssl_params={"server_hostname": MQTT_SERVER}
        # ssl_params={}  # si tu veux rajouter du paramétrage SSL plus poussé
    )
    client.set_callback(mqtt_callback)
    client.connect()
    client.subscribe(TOPIC_SUB)
    print("Connecté au broker MQTT (SSL) et abonné au topic:", TOPIC_SUB.decode())
    return client

# --- Programme principal ---
connect_wifi()
mqtt_client = connect_mqtt()

try:
    while True:
        # Publier un chiffre aléatoire
        random_value = random.randint(0, 100)
        mqtt_client.publish(TOPIC_PUB, str(random_value))
        print("Publié :", random_value)
        
        # Vérifier s'il y a des messages MQTT entrants
        mqtt_client.check_msg()
        
        # Attente 5 secondes
        time.sleep(5)

except KeyboardInterrupt:
    print("Arrêt du programme")
    mqtt_client.disconnect()