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using System.Text;
using Enmarcha.Sources.OpenTripPlannerGql.Queries;
namespace Enmarcha.Backend.Services.Processors;
public class NextStopsProcessor : IArrivalsProcessor
{
private readonly FeedService _feedService;
public NextStopsProcessor(FeedService feedService)
{
_feedService = feedService;
}
public Task ProcessAsync(ArrivalsContext context)
{
if (context.IsNano) return Task.CompletedTask;
var feedId = context.StopId.Split(':')[0];
foreach (var arrival in context.Arrivals)
{
if (arrival.RawOtpTrip is not ArrivalsAtStopResponse.Arrival otpArrival) continue;
if (arrival.Headsign.Marquee is not null) continue;
// Filter stoptimes that are after the current stop's departure
var currentStopDeparture = otpArrival.ScheduledDepartureSeconds;
if (feedId == "xunta")
{
arrival.NextStops = otpArrival.Trip.Stoptimes
.Where(s => s.ScheduledDeparture > currentStopDeparture)
.OrderBy(s => s.ScheduledDeparture)
.Select(s => $"{s.Stop.Name} -- {s.Stop.Description}")
.Distinct()
.ToList();
}
else
{
arrival.NextStops = otpArrival.Trip.Stoptimes
.Where(s => s.ScheduledDeparture > currentStopDeparture)
.OrderBy(s => s.ScheduledDeparture)
.Select(s => FeedService.NormalizeStopName(feedId, s.Stop.Name))
.ToList();
}
arrival.Headsign.Marquee = GenerateMarquee(feedId, arrival.NextStops);
}
return Task.CompletedTask;
}
private static string? GenerateMarquee(string feedId, List<string> nextStops)
{
if (nextStops.Count == 0) return null;
if (feedId is "vitrasa" or "tranvias" or "tussa" or "ourense" or "lugo")
{
var streets = nextStops
.Select(FeedService.GetStreetName)
.Where(s => !string.IsNullOrWhiteSpace(s))
.Distinct()
.ToList();
return string.Join(" - ", streets);
}
if (feedId == "xunta")
{
var points = nextStops
.Select(SplitXuntaStopDescription)
.ToList();
List<string> seenConcellos = [];
List<string> seenParroquias = [];
List<string> items = [];
var maxPointsPerCouncil = points.GroupBy(p => p.concello)
.Select(g => g.Count())
.DefaultIfEmpty(0)
.Max();
if (maxPointsPerCouncil == 1)
{
// If there's only one stop per council, we can simplify the marquee to just show the council names
return string.Join(" - ", points.Select(p => p.nombre).Distinct());
}
foreach (var (nombre, parroquia, concello) in points)
{
// Santiago de Compostela -- Santiago de Compostela > Conxo -- Santiago de Compostela > Biduído -- Ames > Calo -- Teo > Bugallido -- Ames
// Santiago de Compostela -> Conxo -> Bidueiro (Ames) -> Calo (Teo) -> Bugallido
string item = "";
if (!seenParroquias.Contains(parroquia))
{
seenParroquias.Add(parroquia);
item += $"{parroquia}";
if (parroquia == concello)
{
seenConcellos.Add(concello);
}
if (!seenConcellos.Contains(concello))
{
seenConcellos.Add(concello);
item = $"{item} ({concello})";
}
items.Add(item);
}
}
return string.Join(" > ", items);
}
return feedId switch
{
"renfe" => string.Join(" - ", nextStops),
_ => string.Join(", ", nextStops.Take(4))
};
}
private static (string nombre, string parroquia, string concello) SplitXuntaStopDescription(string stopName)
{
var parts = stopName.Split(" -- ", 3);
if (parts.Length != 3)
{
return ("", "", ""); // TODO: Throw
}
return (parts[0], parts[1], parts[2]);
}
}
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