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using System.Text.RegularExpressions;
using Enmarcha.Backend.Types;
using Enmarcha.Backend.Types.Arrivals;
using Enmarcha.Sources.GtfsRealtime;
using Arrival = Enmarcha.Backend.Types.Arrivals.Arrival;
namespace Enmarcha.Backend.Services.Processors;
public partial class RenfeRealTimeProcessor : AbstractRealTimeProcessor
{
private readonly GtfsRealtimeEstimatesProvider _realtime;
private readonly ILogger<RenfeRealTimeProcessor> _logger;
public RenfeRealTimeProcessor(
GtfsRealtimeEstimatesProvider realtime,
ILogger<RenfeRealTimeProcessor> logger
)
{
_realtime = realtime;
_logger = logger;
}
public override async Task ProcessAsync(ArrivalsContext context)
{
if (!context.StopId.StartsWith("renfe:")) return;
try
{
var delays = await _realtime.GetRenfeDelays();
var positions = await _realtime.GetRenfePositions();
System.Diagnostics.Activity.Current?.SetTag("realtime.count", delays.Count);
foreach (Arrival contextArrival in context.Arrivals)
{
var trainNumber = RenfeTrainNumberExpression.Match(contextArrival.TripId).Groups[1].Value;
contextArrival.Headsign.Destination = trainNumber + " - " + contextArrival.Headsign.Destination;
if (delays.TryGetValue(trainNumber, out var delay))
{
if (delay is null)
{
// TODO: Indicate train got cancelled
_logger.LogDebug("Train {TrainNumber} has no delay information, skipping", trainNumber);
continue;
}
var delayMinutes = delay.Value / 60;
contextArrival.Delay = new DelayBadge()
{
Minutes = delayMinutes
};
var oldEstimate = contextArrival.Estimate.Minutes;
contextArrival.Estimate.Minutes += delayMinutes;
contextArrival.Estimate.Precision = ArrivalPrecision.Confident;
if (contextArrival.Estimate.Minutes < 0)
{
_logger.LogDebug("Train {TrainNumber} supposedly departed already ({OldEstimate} + {DelayMinutes} minutes), marking as deleted. ", trainNumber, oldEstimate, delayMinutes);
contextArrival.Delete = true;
}
}
if (positions.TryGetValue(trainNumber, out var position))
{
contextArrival.CurrentPosition = new Position
{
Latitude = position.Latitude,
Longitude = position.Longitude,
Bearing = null // TODO: Set the proper degrees
};
}
}
}
catch (Exception ex)
{
_logger.LogError(ex, "Error fetching Renfe real-time data");
}
}
[GeneratedRegex(@"renfe:(?:\d{4}[A-Z]|)(\d{5})")]
public partial Regex RenfeTrainNumberExpression { get; }
}
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