using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using Tango.Core;
using Tango.Integration.Operation;
using Tango.Telemetry.Mappers;

namespace Tango.Telemetry.Sources
{
    public class TelemetryJobRunsStreamingSource : ExtendedObject, ITelemetryStreamingSource
    {
        private IMachineOperator _machineOperator;

        public string Name { get; } = "JobRuns Streaming";

        public bool RequiresTelemetryDuplicationTracking { get; } = false;
        public bool IsStarted { get; private set; }

        public event EventHandler<TelemetryAvailableEventArgs> TelemetryAvailable;

        public TelemetryJobRunsStreamingSource(IMachineOperator machineOperator)
        {
            _machineOperator = machineOperator;
        }

        private void JobRunsLogger_JobRunAvailable(object sender, Integration.JobRuns.JobRunAvailableEventArgs e)
        {
            Task.Factory.StartNew(() =>
            {
                if (IsStarted)
                {
                    var tRun = JobRunMapper.MapJobRun(e.JobRun);
                    TelemetryAvailable?.Invoke(this, new TelemetryAvailableEventArgs() { TelemetryObject = tRun });
                }
            });
        }

        public void Dispose()
        {
            Stop();
        }

        public void Start()
        {
            if (!IsStarted)
            {
                _machineOperator.JobRunsLogger.JobRunAvailable += JobRunsLogger_JobRunAvailable;
                IsStarted = true;
            }
        }

        public void Stop()
        {
            if (IsStarted)
            {
                _machineOperator.JobRunsLogger.JobRunAvailable -= JobRunsLogger_JobRunAvailable;
                IsStarted = false;
            }
        }
    }
}