using Microsoft.ApplicationInsights;
using Microsoft.ApplicationInsights.Channel;

namespace PlanTempus.Core.Telemetry
{
    public class SeqTelemetryChannel : InMemoryChannel, ITelemetryChannel
    {
        private readonly IMessageChannel<ITelemetry> _messageChannel;
        private readonly TelemetryClient _telemetryClient;

        public SeqTelemetryChannel(IMessageChannel<ITelemetry> messageChannel, TelemetryClient telemetryClient)
        {
            _messageChannel = messageChannel;
            _telemetryClient = telemetryClient;
        }
        public new void Send(ITelemetry telemetry)
        {
            if (telemetry.Context.GlobalProperties["OmitSeqTelemetryChannel"] != "true")
                try
                {
                    var writeTask = _messageChannel.Writer.WriteAsync(telemetry).AsTask();
                    writeTask.ContinueWith(t =>
                    {
                        if (t.Exception != null)
                        {
                            throw t.Exception;
                        }
                    }, TaskContinuationOptions.OnlyOnFaulted);
                }
                catch (Exception e)
                {
                    _telemetryClient.TrackException(e, new Dictionary<string, string> { { "OmitSeqTelemetryChannel", "true" } });
                }
            base.Send(telemetry);
        }
    }
}