feature: FHIR R4 Inbound Facade

2026-06-21 13:53:38 +08:00
parent 9f96f54007
commit a43db52813
42 changed files with 2873 additions and 3 deletions
@@ -0,0 +1,41 @@
+using Hl7.Fhir.Model;
+
+internal static class FhirMappingHelpers
+{
+    public static DateTimeOffset? ToUtcDateTimeOffset(this DataType? value)
+    {
+        return value switch
+        {
+            FhirDateTime fdt => fdt.ToDateTimeOffset(TimeSpan.Zero),
+            Period p when p.StartElement is not null => p.StartElement.ToDateTimeOffset(TimeSpan.Zero),
+            Instant i => i.Value,
+            _ => null
+        };
+    }
+
+    public static bool TryParseResourceReference(string? reference, out string resourceType, out string id)
+    {
+        resourceType = "";
+        id = "";
+
+        if (string.IsNullOrWhiteSpace(reference))
+            return false;
+
+        var refValue = reference;
+        if (Uri.TryCreate(refValue, UriKind.Absolute, out var uri))
+            refValue = uri.AbsolutePath.TrimStart('/');
+
+        var slash = refValue.IndexOf('/');
+        if (slash <= 0)
+            return false;
+
+        resourceType = refValue[..slash];
+        id = refValue[(slash + 1)..];
+
+        var historyIdx = id.IndexOf('/');
+        if (historyIdx > 0)
+            id = id[..historyIdx];
+
+        return !string.IsNullOrWhiteSpace(resourceType) && !string.IsNullOrWhiteSpace(id);
+    }
+}