UserPreferencesSerializer.kt

object UserPreferencesSerializer : Serializer<UserPreferences> {
  override val defaultValue: UserPreferences = UserPreferences()

  override suspend fun readFrom(input: InputStream): UserPreferences {
    try {
      return UserPreferences.ADAPTER.decode(input)
    } catch (exception: IOException) {
      throw CorruptionException("Cannot read proto.", exception)
    }
  }

  override suspend fun writeTo(
    t: UserPreferences,
    output: OutputStream) = t.adapter.encode(output, t)
}

val Context.sserPreferencesDataStore: DataStore<UserPreferences> by dataStore(
  fileName = "user_preferences.pb",
  serializer = UserPreferencesSerializer
)