from umqttsimple import MQTTClient
import network
import time
import ubinascii
import ujson
import random

# Konfigurasi awal
namaPeserta = "Ajang Rahmat"
topik = "quiz/start"

# Koneksi WiFi
wifi = network.WLAN(network.STA_IF)
wifi.active(True)
wifi.connect('Wokwi-GUEST', '')

while not wifi.isconnected():
    print("Menghubungkan ke WiFi...")
    time.sleep(0.5)
print("Terhubung ke Wi-Fi!")

# Buat client ID acak tanpa string
def buat_id_acak(length=6):
    id_acak = ""
    for _ in range(length):
        angka = random.getrandbits(4)  # 0-15
        if angka < 10:
            id_acak += chr(48 + angka)  # '0' to '9'
        else:
            id_acak += chr(65 + angka - 10)  # 'A' to 'F'
    return id_acak

client_id = "WOKWI_" + buat_id_acak()

# Ambil MAC address dan buat payload JSON
mac = ubinascii.hexlify(wifi.config('mac')).decode().upper()
dataJson = ujson.dumps({
    "mac": mac,
    "nama": namaPeserta
})

# Koneksi ke MQTT
client = MQTTClient(client_id, "broker.emqx.io")
client.connect()

# Kirim data terus menerus setiap detik
while True:
    client.publish(topik.encode(), dataJson.encode())
    print("Data terkirim:", dataJson)
    time.sleep(5)