[dev] Implement IP address autodiscovery (zeroconf)

Discovery should be implemented, in order to detect the Google Home device’s IP. By using the pychromecast API, this can be achieved, for example, with the following snippet:

import pychromecast

VALID_GOOGLE_HOME_MODELS = [
    "Google Home",
    "Google Home Mini",
    "Lenovo Smart Clock"
]


def discover_google_home():
    print("Discovering Google Homes...")
    services, browser = pychromecast.discovery.discover_chromecasts()
    for service in services:
        model = service[2]
        name = service[3]
        ip = service[4]
        access_port = service[5]
        if model in VALID_GOOGLE_HOME_MODELS:
            print(f"{name} ({ip}:{access_port}) - {model}")
            print()

The port is more or less useless, since as far as I know, for every Google Home the port is the same: 8009, but, who knows.

This should be added to the integration in the discovery.py file, as stated by the Home Assistant documentation.

I will start working on that, and see if we can make the device configuration easier.

[ArnyminerZ]

For now, will move the conversation to glocaltokens and once it’s implemented there, we will start working at ha-glocaltokens. Will reopen as soon as it’s ready there.

[DurgNomis-drol]

Using mDNS(pychromecast) we can make an reverse lookup and get the IP from that. If we can find the string in homegraph. Then we can make an reverse lookup with socket.gethostbyname in python by adding ._tcp.local afterwards. But I don’t know if this will work or if homegraph has this string included

Or we could just show the user a list were they have to enter the IP of each device. This could at least be the solution until we can finde a better one.