feat(wirepas): add timestamp to button press

wirepas-5g-mesh-gateway/decodePayload.spec.ts

@@ -60,10 +60,18 @@ void describe('decodePayload()', () => {
 		})
 	})
 
-	void it('should decode a button press', () =>
-		assert.deepEqual(decodePayload(Buffer.from('010002', 'hex')), {
-			btn: 2,
-		}))
+	void it('should decode a button press', () => {
+		const now = Date.now()
+		assert.deepEqual(
+			decodePayload(Buffer.from('010002', 'hex'), undefined, () => now),
+			{
+				btn: {
+					v: 2,
+					ts: now,
+				},
+			},
+		)
+	})
 
 	void it('should decode a LED state change', () =>
 		assert.deepEqual(decodePayload(Buffer.from('030101', 'hex')), {

wirepas-5g-mesh-gateway/decodePayload.ts

@@ -1,7 +1,12 @@
 import { ScannableArray } from './ScannableArray.js'
 export type Wirepas5GMeshNodePayload = {
 	temp?: number
-	btn?: number
+	btn?: {
+		// The ID of the pressed button
+		v: number
+		// The local timestamp
+		ts: number
+	}
 	led?: {
 		r?: boolean
 		g?: boolean
@@ -70,6 +75,7 @@ Concerning the message starting with BF, it does not come from the Thingy: these
 export const decodePayload = (
 	payload: Uint8Array,
 	onUnknown?: (type: number, pos: number) => void,
+	now = () => Date.now(),
 ): Wirepas5GMeshNodePayload => {
 	const msg = new ScannableArray(payload)
 
@@ -84,7 +90,12 @@ export const decodePayload = (
 	if (payload.length === 3 && msg.peek() === 1) {
 		msg.next() // skip type
 		msg.next() // skip len
-		return { btn: readUint(msg, 1) }
+		return {
+			btn: {
+				v: readUint(msg, 1),
+				ts: now(),
+			},
+		}
 	}
 
 	// LED special case