private void AddLatestMessage(ChatMessageModel message)
{
if (message == null)
{
throw new ArgumentNullException(nameof(message));
}
var messageViewModel = CreateMessageViewModel(message);
if (TryAddMessageToCache(message))
{
_messageAdded.OnNext(messageViewModel);
var chat = new ChatSummaryModel {
Id = messageViewModel.ChatId
};
if (TryAddChat(chat))
{
UpdateChatsListFromNetworkAsync();
}
FindChatForUpdateLastMessage(message);
}
}
private bool TryAddChat(ChatSummaryModel chatSummary)
{
return(ModifyChatsSafely(() =>
{
if (chatSummary == null || ChatsCollection.Any(x => x.ChatId == chatSummary.Id))
{
return false;
}
var viewModel = _viewModelFactoryService.ResolveViewModel <ChatSummaryViewModel, ChatSummaryModel>(chatSummary);
ChatsCollection.Insert(0, viewModel);
ChatsCollection.Sort((x, y) => y.LastUpdateDate.CompareTo(x.LastUpdateDate));
return true;
}));
}
private void OnChatUpdated(ChatSummaryModel updatedChatSummary)
{
if (updatedChatSummary == null)
{
return;
}
ModifyChatsSafely(() =>
{
var chatSummary = ChatsCollection.FirstOrDefault(x => x.ChatId == updatedChatSummary.Id);
if (chatSummary != null)
{
chatSummary.UpdateModel(updatedChatSummary);
}
});
}
public ChatDetailsHeaderViewModel(
ChatSummaryModel chatModel,
IUploadImageService uploadImageService,
IChatsListManager chatsListManager)
{
_chatModel = chatModel;
_uploadImageService = uploadImageService;
_chatsListManager = chatsListManager;
ChatName = chatModel.Name;
AvatarUrl = chatModel.PhotoUrl;
IsMuted = chatModel.IsMuted;
StartEditingCommand = new RelayCommand(StartEditing);
ChangeMuteNotificationsCommand = new RelayCommand(() => ChangeMuteNotificationsAsync().FireAndForget());
SaveCommand = new RelayCommand <Func <(Task <Stream>, string)> >(x => SaveAsync(x).FireAndForget());
}
public Task EditChatAsync(ChatSummaryModel chatSummary)
{
return(_chatService.EditChatAsync(chatSummary));
}
