override fun decode(databaseValue: Long) = when (databaseValue) {
        1L -> DbMessageType.APPOINTMENT
        2L -> DbMessageType.FILE
        3L -> DbMessageType.LINK
        4L -> DbMessageType.WEB_MEETING
        5L -> DbMessageType.PIN
        else -> DbMessageType.TEXT
    }

    override fun encode(value: DbMessageType) = when (value) {
        DbMessageType.APPOINTMENT -> 1L
        DbMessageType.FILE -> 2L
        DbMessageType.LINK -> 3L
        DbMessageType.WEB_MEETING -> 4L
        DbMessageType.PIN -> 5L
        DbMessageType.TEXT -> 0L
    }

to get unified - safer, without allocating Pair instance (or any other)?

the longs could be constants and

DbMessageType

could be an inline class with the constant as a parameter

yea but that leaks the integer to the rest of the app, and its only a database thing -.-

That doesn't solve the problem both ways