"""Divers fonctions utiles
"""

import time
import machine
import network
from umqtt.robust import MQTTClient


def WifiConnect(ssid, psk):
    """Connect to the wifi with given credentials"""
    wlan = network.WLAN(network.STA_IF)
    wlan.active(True)
    nets = wlan.scan()
    for net in nets:
        net_ssid = net[0].decode()
        if net_ssid == ssid:
            print('Network found!')
            wlan.connect(net_ssid, psk)
            while not wlan.isconnected():
                machine.idle()  # save power while waiting
            print('WLAN connection succeeded!')
            break
    if not wlan.isconnected():
        print("WLAN not found/not connected")

    return wlan

def now(rtc):
    """Return a string representing date/time now"""
    return "{0:04d}/{1:02d}/{2:02d}_{4:02d}:{5:02d}:{6:02d}".format(*rtc.datetime())


def MqttPublish(client, topic, message, retain=False, qos=0, sleep=10):
    """MQTT publish helper"""
    client.publish("test/{device}/{topic}".format(device=client.client_id, topic=topic),
                   message,
                   retain=retain,
                   qos=qos)
    time.sleep_ms(sleep)