/// <summary>
/// Initializes a new instance of the <see cref="LogViewModel"/> class.
/// </summary>
public ChannelsViewModel()
{
ChannelsCollection = new ObservableCollection <AblyChannel>();
UnSubscribeFromChannel = new Command <string>(async channelName =>
{
await Ably.Channels.Get(channelName).Push.UnsubscribeDevice();
await ExecuteLoadItemsCommand(); // Make sure we reload the channels list
Message = $"Unsubscribed from channel {channelName}";
MessageIsVisible = true;
DelayAction(() =>
{
Message = string.Empty;
MessageIsVisible = false;
return(Task.CompletedTask);
});
});
LoadChannelsCommand = new Command(async() => await ExecuteLoadItemsCommand());
SubscribeToChannel = new Command(async() =>
{
MessageIsVisible = false;
if (string.IsNullOrEmpty(ChannelName))
{
Message = "Please enter a channel name";
return;
}
if (ChannelName.StartsWith("push:") == false)
{
Message = "Make sure the 'push:' channel namespace is set.";
return;
}
try
{
await Ably.Channels.Get(ChannelName).Push.SubscribeDevice();
await ExecuteLoadItemsCommand(); // Make sure we reload the channels list
}
catch (AblyException e)
{
Message = $"Error subscribing device to channel. Messages: {e.Message}. Code: {e.ErrorInfo.Code}";
}
ChannelName = string.Empty;
});
}