From 32574981f659a6c59faf968c8dbfe6eda3c632d6 Mon Sep 17 00:00:00 2001
From: Ariel Costas Guerrero <ariel@costas.dev>
Date: Mon, 20 Apr 2026 16:23:00 +0200
Subject: Mostrar procedencia en rutas interurbanas

Closes #154
---
 .../Services/Processors/NextStopsProcessor.cs      | 51 ++++++++++++++++++++++
 src/Enmarcha.Backend/Types/Arrivals/Arrival.cs     |  5 +++
 src/frontend/app/api/schema.ts                     |  1 +
 .../app/components/arrivals/ArrivalCard.tsx        | 16 ++++++-
 4 files changed, 71 insertions(+), 2 deletions(-)

diff --git a/src/Enmarcha.Backend/Services/Processors/NextStopsProcessor.cs b/src/Enmarcha.Backend/Services/Processors/NextStopsProcessor.cs
index 4c0b8ac..0f86be5 100644
--- a/src/Enmarcha.Backend/Services/Processors/NextStopsProcessor.cs
+++ b/src/Enmarcha.Backend/Services/Processors/NextStopsProcessor.cs
@@ -43,7 +43,31 @@ public class NextStopsProcessor : IArrivalsProcessor
                     .ToList();
             }
 
+            // Remove last stop since it doesn't make sense to show "via" for the terminus
+            arrival.NextStops = arrival.NextStops.Take(arrival.NextStops.Count - 1).ToList();
+
+            if (feedId == "xunta")
+            {
+                arrival.OriginStops = otpArrival.Trip.Stoptimes
+                    .Where(s => s.ScheduledDeparture < currentStopDeparture)
+                    .OrderBy(s => s.ScheduledDeparture)
+                    .Take(1)
+                    .Select(s => $"{s.Stop.Name} -- {s.Stop.Description}")
+                    .Distinct()
+                    .ToList();
+            }
+            else if (feedId == "renfe")
+            {
+                arrival.OriginStops = otpArrival.Trip.Stoptimes
+                    .Where(s => s.ScheduledDeparture < currentStopDeparture)
+                    .OrderBy(s => s.ScheduledDeparture)
+                    .Take(1)
+                    .Select(s => FeedService.NormalizeStopName(feedId, s.Stop.Name))
+                    .ToList();
+            }
+
             arrival.Headsign.Marquee = GenerateMarquee(feedId, arrival.NextStops);
+            arrival.Headsign.Origin = GenerateOrigin(feedId, arrival.OriginStops);
         }
 
         return Task.CompletedTask;
@@ -122,6 +146,33 @@ public class NextStopsProcessor : IArrivalsProcessor
         };
     }
 
+    private static string? GenerateOrigin(string feedId, List<string> originStops)
+    {
+        if (originStops.Count == 0) return null;
+
+        if (feedId == "xunta")
+        {
+            var points = originStops.Select(SplitXuntaStopDescription).ToList();
+            var concellos = points
+                .Select(p => p.concello)
+                .Where(c => !string.IsNullOrWhiteSpace(c))
+                .Distinct(StringComparer.OrdinalIgnoreCase)
+                .ToList();
+
+            return concellos.Count > 0 ? string.Join(" > ", concellos) : null;
+        }
+
+        if (feedId == "renfe")
+        {
+            // For trains just show the origin terminus
+            return originStops.First();
+        }
+
+        // For local bus feeds, origin is generally not very informative,
+        // but return the first stop for completeness
+        return originStops.First();
+    }
+
     private static (string nombre, string parroquia, string concello) SplitXuntaStopDescription(string stopName)
     {
         var parts = stopName.Split(" -- ", 3);
diff --git a/src/Enmarcha.Backend/Types/Arrivals/Arrival.cs b/src/Enmarcha.Backend/Types/Arrivals/Arrival.cs
index 0e74a44..3272a05 100644
--- a/src/Enmarcha.Backend/Types/Arrivals/Arrival.cs
+++ b/src/Enmarcha.Backend/Types/Arrivals/Arrival.cs
@@ -33,6 +33,9 @@ public class Arrival
     [JsonIgnore]
     public List<string> NextStops { get; set; } = [];
 
+    [JsonIgnore]
+    public List<string> OriginStops { get; set; } = [];
+
     [JsonIgnore]
     public ArrivalsAtStopResponse.Arrival? RawOtpTrip { get; set; }
 
@@ -73,6 +76,8 @@ public class HeadsignInfo
     [JsonPropertyName("destination")] public required string Destination { get; set; }
 
     [JsonPropertyName("marquee")] public string? Marquee { get; set; }
+
+    [JsonPropertyName("origin")] public string? Origin { get; set; }
 }
 
 public class ArrivalDetails
diff --git a/src/frontend/app/api/schema.ts b/src/frontend/app/api/schema.ts
index 864ea57..d900055 100644
--- a/src/frontend/app/api/schema.ts
+++ b/src/frontend/app/api/schema.ts
@@ -11,6 +11,7 @@ export const HeadsignInfoSchema = z.object({
   badge: z.string().optional().nullable(),
   destination: z.string().nullable(),
   marquee: z.string().optional().nullable(),
+  origin: z.string().optional().nullable(),
 });
 
 export const ArrivalPrecisionSchema = z.enum([
diff --git a/src/frontend/app/components/arrivals/ArrivalCard.tsx b/src/frontend/app/components/arrivals/ArrivalCard.tsx
index 51e0803..3aae65e 100644
--- a/src/frontend/app/components/arrivals/ArrivalCard.tsx
+++ b/src/frontend/app/components/arrivals/ArrivalCard.tsx
@@ -34,7 +34,7 @@ const AutoMarquee = ({ text }: { text: string }) => {
     if (!el) return;
 
     const checkScroll = () => {
-      const charWidth = 8;
+      const charWidth = 12;
       const availableWidth = el.offsetWidth;
       const textWidth = text.length * charWidth;
       setShouldScroll(textWidth > availableWidth);
@@ -252,10 +252,22 @@ export const ArrivalCard: React.FC<ArrivalCardProps> = ({
               {operator && (
                 <span className="text-xs font-mono text-slate-700 dark:text-slate-200 font-medium shrink-0">
                   {operator}
+                  {headsign.destination || headsign.origin ? (
+                    <>&nbsp;·&nbsp;</>
+                  ) : (
+                    ""
+                  )}
+                </span>
+              )}
+              {headsign.origin && (
+                <span className="text-xs font-mono text-slate-500 dark:text-slate-400 shrink-0">
+                  Proc: {headsign.origin}{" "}
                   {headsign.marquee && <>&nbsp;·&nbsp;</>}
                 </span>
               )}
-              {headsign.marquee && <AutoMarquee text={headsign.marquee} />}
+              {headsign.marquee && (
+                <AutoMarquee text={"Via: " + headsign.marquee} />
+              )}
             </div>
           </div>
         </div>
-- 
cgit v1.3