From 2a9aca302485bc08f5b2dd2a54987de6f80fc338 Mon Sep 17 00:00:00 2001
From: Ariel Costas Guerrero <ariel@costas.dev>
Date: Fri, 19 Dec 2025 13:06:27 +0100
Subject: Implement loading stops as tiles from OTP

---
 .../GraphClient/App/StopTile.cs                    | 76 ++++++++++++++++++++++
 .../GraphClient/ResponseTypes.cs                   | 36 ++++++++++
 2 files changed, 112 insertions(+)
 create mode 100644 src/Costasdev.Busurbano.Backend/GraphClient/App/StopTile.cs
 create mode 100644 src/Costasdev.Busurbano.Backend/GraphClient/ResponseTypes.cs

(limited to 'src/Costasdev.Busurbano.Backend/GraphClient')

diff --git a/src/Costasdev.Busurbano.Backend/GraphClient/App/StopTile.cs b/src/Costasdev.Busurbano.Backend/GraphClient/App/StopTile.cs
new file mode 100644
index 0000000..8a271f2
--- /dev/null
+++ b/src/Costasdev.Busurbano.Backend/GraphClient/App/StopTile.cs
@@ -0,0 +1,76 @@
+using System.Globalization;
+using System.Text.Json.Serialization;
+
+namespace Costasdev.Busurbano.Backend.GraphClient.App;
+
+public class StopTileRequestContent : IGraphRequest<StopTileRequestContent.Bbox>
+{
+    public record Bbox(double MinLon, double MinLat, double MaxLon, double MaxLat);
+
+    public static string Query(Bbox bbox)
+    {
+        return string.Create(CultureInfo.InvariantCulture, $@"
+        query Query {{
+            stopsByBbox(
+                minLat: {bbox.MinLat:F6}
+                minLon: {bbox.MinLon:F6}
+                maxLon: {bbox.MaxLon:F6}
+                maxLat: {bbox.MaxLat:F6}
+            ) {{
+                gtfsId
+                code
+                name
+                lat
+                lon
+                routes {{
+                    gtfsId
+                    shortName
+                    color
+                    textColor
+                }}
+            }}
+        }}
+        ");
+    }
+}
+
+public class StopTileResponse : AbstractGraphResponse
+{
+    [JsonPropertyName("stopsByBbox")]
+    public List<Stop>? StopsByBbox { get; set; }
+
+    public record Stop
+    {
+        [JsonPropertyName("gtfsId")]
+        public required string GtfsId { get; init; }
+
+        [JsonPropertyName("code")]
+        public string? Code { get; init; }
+
+        [JsonPropertyName("name")]
+        public required string Name { get; init; }
+
+        [JsonPropertyName("lat")]
+        public required double Lat { get; init; }
+
+        [JsonPropertyName("lon")]
+        public required double Lon { get; init; }
+
+        [JsonPropertyName("routes")]
+        public List<Route>? Routes { get; init; }
+    }
+
+    public record Route
+    {
+        [JsonPropertyName("gtfsId")]
+        public required string GtfsId { get; init; }
+        [JsonPropertyName("shortName")]
+        public required string ShortName { get; init; }
+
+        [JsonPropertyName("color")]
+        public string? Color { get; init; }
+
+        [JsonPropertyName("textColor")]
+        public string? TextColor { get; init; }
+    }
+}
diff --git a/src/Costasdev.Busurbano.Backend/GraphClient/ResponseTypes.cs b/src/Costasdev.Busurbano.Backend/GraphClient/ResponseTypes.cs
new file mode 100644
index 0000000..2d4d5df
--- /dev/null
+++ b/src/Costasdev.Busurbano.Backend/GraphClient/ResponseTypes.cs
@@ -0,0 +1,36 @@
+using System.Text.Json.Serialization;
+
+namespace Costasdev.Busurbano.Backend.GraphClient;
+
+public class GraphClientRequest
+{
+    public string OperationName { get; set; } = "Query";
+    public required string Query { get; set; }
+}
+
+public class GraphClientResponse<T> where T : AbstractGraphResponse
+{
+    [JsonPropertyName("data")]
+    public T? Data { get; set; }
+
+    [JsonPropertyName("errors")]
+    public List<GraphClientError>? Errors { get; set; }
+
+    public bool IsSuccess => Errors == null || Errors.Count == 0;
+}
+
+public interface IGraphRequest<T>
+{
+    static abstract string Query(T parameters);
+}
+
+public class AbstractGraphResponse
+{
+}
+
+public class GraphClientError
+{
+    [JsonPropertyName("message")]
+    public required string Message { get; set; }
+}
+
-- 
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