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 +1,37 @@
+using Hl7.Fhir.Model;
+using Task = System.Threading.Tasks.Task;
+
+public class MedicationAdministrationFhirMapper
+{
+    private readonly FhirReferenceResolver _refs;
+
+    public MedicationAdministrationFhirMapper(FhirReferenceResolver refs) => _refs = refs;
+
+    public async Task<(CreateMedicationAdministrationRequest Request, Guid EncounterId)> ToCreateRequestAsync(
+        Hl7.Fhir.Model.MedicationAdministration fhir)
+    {
+        if (fhir.Context is null)
+            throw new FhirMappingException(
+                "MedicationAdministration context is required.", "required");
+
+        var encounterId = await _refs.ResolveEncounterReferenceAsync(fhir.Context);
+
+        var drugName = fhir.Medication is CodeableConcept cc
+            ? cc.Text ?? cc.Coding?.FirstOrDefault()?.Display ?? "Unknown"
+            : "Unknown";
+
+        var dose = fhir.Dosage?.Dose as Quantity;
+        var route = fhir.Dosage?.Route?.Text ?? fhir.Dosage?.Route?.Coding?.FirstOrDefault()?.Display ?? "IV";
+        var performer = fhir.Performer?.FirstOrDefault()?.Actor?.Display ?? "Unknown";
+
+        var req = new CreateMedicationAdministrationRequest(
+            DrugName: drugName,
+            Dose: dose?.Value ?? 0m,
+            DoseUnit: dose?.Unit ?? "mg",
+            Route: route,
+            AdministeredAt: fhir.Effective.ToUtcDateTimeOffset(),
+            AdministeredBy: performer);
+
+        return (req, encounterId);
+    }
+}