UnreadCounter.kt

  private fun getUnreadCountFromUsers() {
    val conversations = datasource.getConversations()
    var count = 0
    for (conversation in conversations) {
      if (conversation.recipientId != null) {
        for (message in conversation.messages) {
          if (message.unread) {
            count += 1
          }
        }
      }
    }
  }

  private fun getNumberOfUnreadAttachmentsInGroupConversations() {
    val conversations = datasource.getConversations()
    var count = 0
    for (conversation in conversations) {
      if (conversation.groupId != null) {
        for (message in conversation.messages) {
          if (message.unread && message.type == MessageType.ATTACHMENT) {
            count += 1
          }
        }
      }
    }
  }