private async Task LoadData()
{
var rawBlocks = await _viewModel.CheckBlock();
var blocks = JsonConvert.DeserializeObject <List <UserToBlockedUser> >(rawBlocks.content);
ButtonSend.IsEnabled = true;
EntrySend.IsEnabled = true;
EntrySend.Placeholder = AppResources.ChatMessagePlaceholder;
if (blocks.Any())
{
ButtonSend.IsEnabled = false;
EntrySend.IsEnabled = false;
EntrySend.Placeholder = AppResources.ChatIsBlockedPlaceholder;
}
var connectTask = _viewModel.Connect(_tripId, _conversationId);
var getMessagesTask = _viewModel.LoadMessageListAsync(_tripId, _conversationId);
var(baseResult, content) = (new BaseResult(), string.Empty);
if (_conversationId == Guid.Empty)
{
await connectTask;
(baseResult, content) = await _viewModel.LoadMessageListAsync(_tripId, _viewModel.ConversationId);
}
else
{
await Task.WhenAny(connectTask, getMessagesTask);
(baseResult, content) = await getMessagesTask;
}
switch (baseResult.Result)
{
case StatusCode.Ok:
_viewModel.IsBusy = false;
_viewModel.FillMessageList(content);
Device.BeginInvokeOnMainThread(() =>
{
MainScreenMessagesListView.ScrollTo(_viewModel.MessageList.LastOrDefault(), ScrollToPosition.MakeVisible, false);
});
break;
case StatusCode.Unauthorized when _viewModel.IsModalAuthWasOpen:
return;
case StatusCode.Unauthorized:
await Navigation.PushAsync(new ModalAuthenticationPage(Chat));
_viewModel.IsModalAuthWasOpen = true;
break;
default:
await DisplayAlert(AppResources.Notification, baseResult.Message, AppResources.Ok);
_viewModel.IsModalAuthWasOpen = true;
break;
}
}
private void OnSizeChanged(object sender, EventArgs e)
{
Device.BeginInvokeOnMainThread(() =>
{
MainScreenMessagesListView.ScrollTo(_viewModel.MessageList.LastOrDefault(), ScrollToPosition.MakeVisible, false);
});
}
public ChatPage(int tripId, int userId, Guid conversationId, string userName)
{
InitializeComponent();
_userName = userName;
_tripId = tripId;
_userId = userId;
_conversationId = conversationId;
_viewModel = new ChatViewModel(tripId, userId, conversationId, userName);
BindingContext = _viewModel;
Appearing += (object sender, EventArgs e) => EntrySend.Focus();
MessagingCenter.Subscribe <object>(this, "MessageReceived", (sender) => {
Device.BeginInvokeOnMainThread(() =>
{
MainScreenMessagesListView.ScrollTo(_viewModel.MessageList.LastOrDefault(), ScrollToPosition.Start, false);
});
});
MessagingCenter.Subscribe <object>(this, "ClosedModalAuthChat", (sender) => {
OnAppearing();
});
}
