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using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using Tango.BL.Entities;
using Tango.Integration.Operation;
using Tango.Telemetry.Telemetries;
// NEW:
using System.Timers;
namespace Tango.Telemetry.Sources
{
public class TelemetryJobStatusSource : ITelemetryStreamingSource
{
private IMachineOperator _machineOperator;
private Job _job;
private TelemetryJobStatus _lastStatus;
private String _groupID;
private DateTime _startTime;
// NEW: throttle state
private readonly object _lock = new object();
private DateTime _lastStatusArrivedUtc;
private DateTime _lastEmittedUtc;
private Timer _emitTimer; // ticks every 1s
public bool IsStarted { get; private set; }
public string Name { get; } = "Job Status Streaming";
public bool RequiresTelemetryDuplicationTracking { get; }
public event EventHandler<TelemetryAvailableEventArgs> TelemetryAvailable;
public TelemetryJobStatusSource(IMachineOperator machineOperator)
{
_machineOperator = machineOperator;
}
public void Start()
{
if (!IsStarted)
{
IsStarted = true;
_machineOperator.PrintingStarted += MachineOperator_PrintingStarted;
// NEW: start 1s emitter (idempotent)
if (_emitTimer == null)
{
_emitTimer = new Timer(1000);
_emitTimer.AutoReset = true;
_emitTimer.Elapsed += EmitTimer_Elapsed;
_emitTimer.Start();
}
}
}
public void Stop()
{
if (IsStarted)
{
IsStarted = false;
_machineOperator.PrintingStarted -= MachineOperator_PrintingStarted;
// NEW: stop timer
if (_emitTimer != null)
{
_emitTimer.Stop();
_emitTimer.Elapsed -= EmitTimer_Elapsed;
_emitTimer.Dispose();
_emitTimer = null;
}
}
}
private void MachineOperator_PrintingStarted(object sender, PrintingEventArgs e)
{
if (e.JobHandler != null)
{
_groupID = Guid.NewGuid().ToString();
_job = e.Job;
_startTime = DateTime.UtcNow;
e.JobHandler.StatusChanged += JobHandler_StatusChanged;
e.JobHandler.Failed += JobHandler_Failed;
}
}
// NEW: timer tick — emit only the latest status observed within last 5 seconds, once per tick
private void EmitTimer_Elapsed(object sender, ElapsedEventArgs e)
{
if (!IsStarted) return;
TelemetryJobStatus toEmit = null;
DateTime now = DateTime.UtcNow;
lock (_lock)
{
// Only emit if we have a newer status than last emitted,
// and that status is fresh (arrived within the last 5 seconds).
if (_lastStatus != null &&
_lastStatusArrivedUtc > _lastEmittedUtc &&
(now - _lastStatusArrivedUtc) <= TimeSpan.FromSeconds(5))
{
toEmit = _lastStatus;
_lastEmittedUtc = now; // mark emission (1 per tick max)
}
}
if (toEmit != null)
{
TelemetryAvailable?.Invoke(this, new TelemetryAvailableEventArgs
{
TelemetryObject = toEmit,
DisableDeliveryRetries = true
});
}
}
private void JobHandler_StatusChanged(object sender, RunningJobStatus status)
{
if (!IsStarted) return;
// CHANGED: just update the latest snapshot fast; do NOT emit here.
var tStatus = new TelemetryJobStatus
{
JobName = _job?.Name,
ID = _groupID,
TotalTime = status.TotalTime,
RemainingTime = status.RemainingTime,
Progress = status.ProgressMinusSettingUp,
TotalProgress = status.TotalProgressMinusSettingUp,
CurrentUnit = status.CurrentUnit,
RemainingUnits = status.RemainingUnits,
CurrentUnitProgress = status.CurrentUnitProgress,
CurrentUnitTotalProgress = status.CurrentUnitTotalProgress,
Message = status.Message
};
if (status.ProgressMinusSettingUp > 0) tStatus.Status = TelemetryJobStatus.JobStatus.InProgress;
if (status.IsCompleted) tStatus.Status = TelemetryJobStatus.JobStatus.Completed;
if (status.IsFailed) tStatus.Status = TelemetryJobStatus.JobStatus.Failed;
if (status.IsCanceled) tStatus.Status = TelemetryJobStatus.JobStatus.Aborted;
lock (_lock)
{
_lastStatus = tStatus;
_lastStatusArrivedUtc = DateTime.UtcNow;
}
}
private void JobHandler_Failed(object sender, Exception e)
{
// CHANGED: update the latest snapshot and let the timer emit it (within ~1s)
lock (_lock)
{
if (_lastStatus != null)
{
_lastStatus.Message = e.FlattenMessage();
_lastStatus.Status = TelemetryJobStatus.JobStatus.Failed;
_lastStatusArrivedUtc = DateTime.UtcNow;
}
}
}
public void Dispose()
{
Stop();
}
}
}
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