From 8ef93e3f06f40b739adffca79156ecd1cbf3c504 Mon Sep 17 00:00:00 2001
From: Paul-Christian Volkmer
Date: Tue, 28 Oct 2025 09:38:30 +0100
Subject: feat: do not convert MII consent again (#169)

---
 .../etl/processor/consent/GicsConsentService.java  | 18 +++++++++++++++
 .../processor/consent/GicsConsentServiceTest.java  | 26 ++++++++++++++++++++++
 2 files changed, 44 insertions(+)

diff --git a/src/main/java/dev/dnpm/etl/processor/consent/GicsConsentService.java b/src/main/java/dev/dnpm/etl/processor/consent/GicsConsentService.java
index a1a613e..9b785ab 100644
--- a/src/main/java/dev/dnpm/etl/processor/consent/GicsConsentService.java
+++ b/src/main/java/dev/dnpm/etl/processor/consent/GicsConsentService.java
@@ -307,6 +307,11 @@ public class GicsConsentService implements IConsentService {
     Bundle.BundleEntryComponent bundleEntryComponent = gIcsResultBundle.getEntry().getFirst();
 
     var consentAsOne = (Consent) bundleEntryComponent.getResource();
+
+    if (isMiiConsent(consentAsOne)) {
+      return gIcsResultBundle;
+    }
+
     if (consentAsOne.getPolicy().stream().noneMatch(p -> p.getUri().equals(BROAD_CONSENT_POLICY))) {
       consentAsOne.addPolicy(new Consent.ConsentPolicyComponent().setUri(BROAD_CONSENT_POLICY));
     }
@@ -347,6 +352,19 @@ public class GicsConsentService implements IConsentService {
     return gIcsResultBundle;
   }
 
+  private static boolean isMiiConsent(Consent consent) {
+    for (var category : consent.getCategory()) {
+      for (var categoryCoding : category.getCoding()) {
+        if ("https://www.medizininformatik-initiative.de/fhir/modul-consent/CodeSystem/mii-cs-consent-consent_category"
+                .equals(categoryCoding.getSystem())
+            && "2.16.840.1.113883.3.1937.777.24.2.184".equals(categoryCoding.getCode())) {
+          return true;
+        }
+      }
+    }
+    return false;
+  }
+
   protected Bundle anonymizeBroadConsent(Bundle bundle) {
     Bundle.BundleEntryComponent bundleEntryComponent = bundle.getEntry().getFirst();
     hashBundleEntry(bundleEntryComponent);
diff --git a/src/test/java/dev/dnpm/etl/processor/consent/GicsConsentServiceTest.java b/src/test/java/dev/dnpm/etl/processor/consent/GicsConsentServiceTest.java
index 40fdc52..bbc53be 100644
--- a/src/test/java/dev/dnpm/etl/processor/consent/GicsConsentServiceTest.java
+++ b/src/test/java/dev/dnpm/etl/processor/consent/GicsConsentServiceTest.java
@@ -210,4 +210,30 @@ class GicsConsentServiceTest {
     var actual = gicsConsentService.anonymizeBroadConsent(miiConsentBundle);
     assertThat(fhirJsonParser.encodeToString(actual)).doesNotContain(currentPatientId);
   }
+
+  @Test
+  void miiBroadConsentShouldNotBeConvertedAgain() throws Exception {
+    var fhirJsonParser = FhirContext.forR4().newJsonParser();
+    fhirJsonParser.setPrettyPrint(true);
+
+    var gicsInputStream =
+        Objects.requireNonNull(
+            this.getClass()
+                .getClassLoader()
+                .getResourceAsStream("fake_broadConsent_mii_response_permit.json"));
+    var gicsConsentBundle =
+        (Bundle)
+            fhirJsonParser.parseResource(IOUtils.toString(gicsInputStream, StandardCharsets.UTF_8));
+
+    var miiInputStream =
+        Objects.requireNonNull(
+            this.getClass()
+                .getClassLoader()
+                .getResourceAsStream("fake_broadConsent_mii_response_permit.json"));
+    var miiConsent = IOUtils.toString(miiInputStream, StandardCharsets.UTF_8);
+
+    var actual = gicsConsentService.convertGicsResultToMiiBroadConsent(gicsConsentBundle);
+
+    assertThat(fhirJsonParser.encodeToString(actual)).isEqualTo(miiConsent);
+  }
 }
-- 
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