continue if user is already invited

d2m/actions/register-user.js

@@ -72,8 +72,16 @@ async function ensureSimJoined(user, roomID) {
 	// Ensure joined
 	const existing = db.prepare("SELECT * FROM sim_member WHERE room_id = ? and mxid = ?").get(roomID, mxid)
 	if (!existing) {
+		try {
 			await api.inviteToRoom(roomID, mxid)
 			await api.joinRoom(roomID, mxid)
+		} catch (e) {
+			if (e.message.includes("is already in the room.")) {
+				// Sweet!
+			} else {
+				throw e
+			}
+		}
 		db.prepare("INSERT INTO sim_member (room_id, mxid) VALUES (?, ?)").run(roomID, mxid)
 	}
 	return mxid

matrix/api.js

@@ -171,13 +171,12 @@ async function setUserPower(roomID, mxid, power) {
 	assert(mxid[0] === "@")
 	// Yes there's no shortcut https://github.com/matrix-org/matrix-appservice-bridge/blob/2334b0bae28a285a767fe7244dad59f5a5963037/src/components/intent.ts#L352
 	const powerLevels = await getStateEvent(roomID, "m.room.power_levels", "")
-	const users = powerLevels.users || {}
+	powerLevels.users = powerLevels.users || {}
 	if (power != null) {
-		users[mxid] = power
+		powerLevels.users[mxid] = power
 	} else {
-		delete users[mxid]
+		delete powerLevels.users[mxid]
 	}
-	powerLevels.users = users
 	await sendState(roomID, "m.room.power_levels", "", powerLevels)
 	return powerLevels
 }