fix: handle exceptions during point transformation and initialize shape points

2 files changed, 17 insertions, 2 deletions

diff --git a/src/Enmarcha.Backend/Services/ShapeTraversalService.cs b/src/Enmarcha.Backend/Services/ShapeTraversalService.cs
index 1f77929..10de3e0 100644
--- a/src/Enmarcha.Backend/Services/ShapeTraversalService.cs
+++ b/src/Enmarcha.Backend/Services/ShapeTraversalService.cs
@@ -41,7 +41,22 @@ public class ShapeTraversalService
 
         foreach (var point in points)
         {
-            var transformed = inverseTransform.Transform(new[] { point.Longitude, point.Latitude });
+            double[]? transformed = null;
+            try
+            {
+                transformed = inverseTransform.Transform(new[] { point.Longitude, point.Latitude });
+            }
+            catch (Exception)
+            {
+                _logger.LogError("Exception while transforming point from {Lat},{Lon}", point.Latitude, point.Longitude);
+                continue;
+            }
+
+            if (transformed is null)
+            {
+                _logger.LogError("Transformed point from {Lat},{Lon} is null", point.Latitude, point.Longitude);
+                continue;
+            }
             shape.Points.Add(new Epsg25829 { X = transformed[0], Y = transformed[1] });
         }
         return shape;
diff --git a/src/Enmarcha.Backend/Types/ConsolidatedCirculation.cs b/src/Enmarcha.Backend/Types/ConsolidatedCirculation.cs
index bb6a251..298e2f4 100644
--- a/src/Enmarcha.Backend/Types/ConsolidatedCirculation.cs
+++ b/src/Enmarcha.Backend/Types/ConsolidatedCirculation.cs
@@ -46,5 +46,5 @@ public class Epsg25829
 public class Shape
 {
     public string ShapeId { get; set; }
-    public List<Epsg25829> Points { get; set; }
+    public List<Epsg25829> Points { get; set; } = [];
 }