RFE: add sensors for Kettle state

[gregsheremeta]

Note that I'm a homeassistant user and have never used Homebridge before today, so apologies if my terminology is slightly off.

• Please explain your feature request in a one or two sentences.
  I'd like to expose Kettle attributes as sensors (in homeassistant) -- primarily temperature and done-boiling/keep-warm-mode-started. The reason I installed this plugin is that I'd like to get "water done boiling" status updates into homeassistant (i.e. I don't have any use for the remote start buttons). All I really want to do is get a watch notification when my water is done. The govee app is surprisingly useless for this unless I open the app before I start the water, and I don't want to have to do that. So I'm trying to get a homeassistant notification instead.

Looks like it might be possible somewhere in the externalUpdate() function here:

homebridge-govee/lib/device/kettle.js

Lines 220 to 267 in e0a3675

	externalUpdate(params) {
	// Check for some other scene/mode change
	(params.commands || []).forEach((command) => {
	const hexString = base64ToHex(command);
	const hexParts = hexToTwoItems(hexString);
	// Return now if not a device query update code
	if (getTwoItemPosition(hexParts, 1) !== 'aa') {
	return;
	}
	const deviceFunction = `${getTwoItemPosition(hexParts, 2)}${getTwoItemPosition(hexParts, 3)}`;
	switch (deviceFunction) {
	case '0500': { // current mode
	// switch to green tea_: aa050002000000000000000000000000000000ad
	// switch to oolong tea: aa050003000000000000000000000000000000ac
	// switch to coffee____: aa050004000000000000000000000000000000ab
	// switch to black tea_: aa050005000000000000000000000000000000aa
	// switch to preset1___: aa050001010000000000000000000000000000af
	// switch to preset2___: aa050001020000000000000000000000000000ac
	// No point in changing any switches for the sake of three seconds, no action taken here
	break;
	}
	case '1001': { // current temperature in F
	// const currentTempInF = hexToDecimal(`${getTwoItemPosition(hexParts, 4)}${getTwoItemPosition(hexParts, 5)}`);
	// const currentTempInC = farToCen(currentTempInF / 100);
	break;
	}
	case '1700': { // on/off base?
	const onBase = getTwoItemPosition(hexParts, 4) === '00' ? 'yes' : 'no';
	if (this.cacheOnBase !== onBase) {
	this.cacheOnBase = onBase;
	this.accessory.log(`current on base [${this.cacheOnBase}]`);
	}
	break;
	}
	case '2200': // keep warm off
	case '2201': // keep warm on
	case '2300': // scheduled start off
	case '2301': { // scheduled start on
	break;
	}
	default:
	this.accessory.logDebugWarn(`${platformLang.newScene}: [${command}] [${hexString}]`);
	break;
	}
	});

(I see temperature is commented out)

• Any particular Govee devices that this relates to?
  7171 kettle

[gregsheremeta]

btw, I found your plugin here: https://www.reddit.com/r/homeassistant/comments/11nwq02/comment/jne77w8/

thanks for your work on this!