Consolidate GVL deletion workflow and document purge semantics

src/background.js

@@ -125,10 +125,6 @@ async function handleVendorGetMessage(message, sender) {
     return handlePurgeUnlockedEvidenceRecordsMessage();
   }
 
-  if (message.type === "purge_gvl_reference_data") {
-    return handlePurgeGvlReferenceDataMessage();
-  }
-
   if (message.type === "delete_all_evidence_database") {
     return handleDeleteAllEvidenceDatabaseMessage();
   }
@@ -302,7 +298,8 @@ async function handleMarkGvlRevisionEvidenceVaultCopyMessage(message) {
     return {
       success: true,
       mark: await markVendorGetGvlRevisionEvidenceVaultCopy(
-        message?.payload?.snapshotSha256 ?? null
+        message?.payload?.snapshotSha256 ?? null,
+        message?.payload?.verification ?? null
       )
     };
   } catch (error) {
@@ -1229,12 +1226,6 @@ async function handlePurgeUnlockedEvidenceRecordsMessage() {
   return purgeUnlockedEvidenceRecords(db);
 }
 
-async function handlePurgeGvlReferenceDataMessage() {
-  const db = await openVendorGetDb();
-
-  return purgeGvlReferenceData(db);
-}
-
 function handleDeleteAllEvidenceDatabaseMessage() {
   return deleteVendorGetDatabase();
 }

src/background/db/db-constants.js

@@ -33,16 +33,3 @@ const VENDORGET_EVIDENCE_STORE_NAMES = [
   VENDORGET_STORE_NAMES.gvlDataCategories,
   VENDORGET_STORE_NAMES.gvlVendorRelationships
 ];
-
-const VENDORGET_GVL_REFERENCE_STORE_NAMES = [
-  VENDORGET_STORE_NAMES.gvlRawEvidence,
-  VENDORGET_STORE_NAMES.gvlSnapshots,
-  VENDORGET_STORE_NAMES.gvlSnapshotEvents,
-  VENDORGET_STORE_NAMES.gvlVendors,
-  VENDORGET_STORE_NAMES.gvlPurposes,
-  VENDORGET_STORE_NAMES.gvlSpecialPurposes,
-  VENDORGET_STORE_NAMES.gvlFeatures,
-  VENDORGET_STORE_NAMES.gvlSpecialFeatures,
-  VENDORGET_STORE_NAMES.gvlDataCategories,
-  VENDORGET_STORE_NAMES.gvlVendorRelationships
-];

src/background/db/db-retention.js

@@ -89,31 +89,11 @@ async function purgeUnlockedEvidenceRecords(db) {
   });
 }
 
-function purgeGvlReferenceData(db) {
-  return new Promise((resolve, reject) => {
-    const clearedStores = {};
-    const tx = db.transaction(VENDORGET_GVL_REFERENCE_STORE_NAMES, "readwrite");
-
-    tx.onerror = () => reject(tx.error);
-    tx.onabort = () => reject(tx.error);
-    tx.oncomplete = () => {
-      resolve({
-        success: true,
-        clearedStores
-      });
-    };
-
-    for (const storeName of VENDORGET_GVL_REFERENCE_STORE_NAMES) {
-      const objectStore = tx.objectStore(storeName);
-      const countRequest = objectStore.count();
-
-      countRequest.onsuccess = () => {
-        clearedStores[storeName] = countRequest.result;
-        objectStore.clear();
-      };
-    }
-  });
-}
+// TODO: GVL-Datenpflege darf nicht storeweise per clear() erfolgen.
+// Loeschbar ist nur eine GVL-Revision, wenn ihre zugehoerigen Raw-, Snapshot-,
+// Event- und normalisierten Records identifiziert sind, ihr Schutzstatus
+// vollstaendig bewertet wurde und eine vorhandene Vault-/Workspace-Schutzlogik
+// die Loeschung erlaubt.
 
 function buildGvlWorkspaceProtectionIndex(db) {
   return new Promise((resolve, reject) => {

src/core/gvl-evidence-json.js

@@ -287,14 +287,21 @@ async function importVendorGetGvlRevisionEvidenceJson(exportContainer) {
   };
 }
 
-async function markVendorGetGvlRevisionEvidenceVaultCopy(snapshotSha256) {
+async function markVendorGetGvlRevisionEvidenceVaultCopy(
+  snapshotSha256,
+  verification = null
+) {
   if (!snapshotSha256) {
     throw new Error("missing_snapshot_sha256");
   }
 
   const db = await openVendorGetDb();
 
-  return markGvlRevisionEvidenceVaultCopyAvailable(db, snapshotSha256);
+  return markGvlRevisionEvidenceVaultCopyAvailable(
+    db,
+    snapshotSha256,
+    verification
+  );
 }
 
 function getGvlEvidenceRecordByKey(db, storeName, key) {
@@ -632,9 +639,16 @@ function formatGvlEvidenceProvenance(values) {
   return "web";
 }
 
-function markGvlRevisionEvidenceVaultCopyAvailable(db, snapshotSha256) {
-  return updateGvlRevisionEvidenceRecords(db, snapshotSha256, (record) =>
-    markGvlEvidenceRecordVaultCopyAvailable(record)
+function markGvlRevisionEvidenceVaultCopyAvailable(
+  db,
+  snapshotSha256,
+  verification = null
+) {
+  return updateGvlRevisionEvidenceRecords(
+    db,
+    snapshotSha256,
+    (record) => markGvlEvidenceRecordVaultCopyAvailable(record),
+    verification
   );
 }
 
@@ -652,7 +666,12 @@ function markGvlRevisionEvidenceProvenance(db, snapshotSha256, provenance) {
   );
 }
 
-function updateGvlRevisionEvidenceRecords(db, snapshotSha256, updateRecord) {
+function updateGvlRevisionEvidenceRecords(
+  db,
+  snapshotSha256,
+  updateRecord,
+  verification = null
+) {
   return new Promise((resolve, reject) => {
     const tx = db.transaction(
       [VENDORGET_STORE_NAMES.gvlSnapshots, VENDORGET_STORE_NAMES.gvlRawEvidence],
@@ -665,7 +684,8 @@ function updateGvlRevisionEvidenceRecords(db, snapshotSha256, updateRecord) {
       snapshotMarked: false,
       rawEvidenceMarked: false,
       snapshotSha256,
-      rawGvlSha256: null
+      rawGvlSha256: null,
+      skippedReason: null
     };
 
     snapshotRequest.onerror = () => reject(snapshotRequest.error);
@@ -673,6 +693,12 @@ function updateGvlRevisionEvidenceRecords(db, snapshotSha256, updateRecord) {
       const snapshot = snapshotRequest.result ?? null;
 
       if (!snapshot) {
+        result.skippedReason = "gvl_snapshot_not_found";
+        return;
+      }
+
+      if (!doesGvlRevisionEvidenceMatchVerification(snapshot, verification)) {
+        result.skippedReason = "gvl_revision_evidence_verification_mismatch";
         return;
       }
 
@@ -708,6 +734,40 @@ function updateGvlRevisionEvidenceRecords(db, snapshotSha256, updateRecord) {
   });
 }
 
+function doesGvlRevisionEvidenceMatchVerification(snapshot, verification) {
+  if (!verification) {
+    return true;
+  }
+
+  if (verification.valid !== true) {
+    return false;
+  }
+
+  if (
+    verification.snapshotSha256 &&
+    snapshot.sha256 !== verification.snapshotSha256
+  ) {
+    return false;
+  }
+
+  if (
+    verification.vendorListVersion !== null &&
+    verification.vendorListVersion !== undefined &&
+    snapshot.vendorListVersion !== verification.vendorListVersion
+  ) {
+    return false;
+  }
+
+  if (
+    verification.rawGvlSha256 &&
+    snapshot.rawGvlSha256 !== verification.rawGvlSha256
+  ) {
+    return false;
+  }
+
+  return true;
+}
+
 function formatGvlEvidenceUtcCompact(date) {
   return [
     date.getUTCFullYear(),

src/dashboard/dashboard.html

@@ -81,15 +81,6 @@
             <strong>Analyse-Vorbereitung</strong>
             <span>Datenbestände und vorbereitete Prüffelder, keine Engine.</span>
           </a>
-          <a class="workspace-link workspace-placeholder" href="../data-maintenance/data-maintenance.html">
-            <strong>Datenpflege</strong>
-            <span>
-              Gezielte Verwaltung lokaler Datenbestände. Löschen,
-              Wiederherstellen und Exportieren erfolgen künftig segmentbezogen.
-              Vorgesehene Segmente sind GVL-Referenzdaten der Browser-DB,
-              Consent-Daten, Analyse-Daten und weitere künftige Datenbereiche.
-            </span>
-          </a>
         </div>
       </section>
 
@@ -127,6 +118,16 @@
         </dl>
       </section>
 
+      <section class="panel" aria-labelledby="data-maintenance-title">
+        <h2 id="data-maintenance-title">Datenpflege</h2>
+        <div class="workspace-actions">
+          <a class="workspace-link workspace-placeholder" href="../data-maintenance/data-maintenance.html">
+            <strong>Datenpflege</strong>
+            <span>Verwaltung lokaler Datenbestände.</span>
+          </a>
+        </div>
+      </section>
+
     </main>
 
     <script src="dashboard.js"></script>

src/data-maintenance/data-maintenance.css

@@ -113,6 +113,10 @@ p {
   background: #172033;
 }
 
+.protected-revisions {
+  white-space: pre-line;
+}
+
 button {
   width: fit-content;
   max-width: 100%;

src/data-maintenance/data-maintenance.html

@@ -31,7 +31,7 @@
                 Consent-Daten, Request-Beobachtungen und Analyse-Daten bleiben
                 unberührt.
               </p>
-              <button id="purge-gvl-reference-data-button" type="button">
+              <button id="purge-gvl-reference-data-button" type="button" disabled>
                 GVL-Referenzdaten bereinigen
               </button>
             </div>
@@ -40,7 +40,16 @@
               class="segment-status"
               aria-live="polite"
             >
-              Bereit.
+              –
+            </p>
+            <p
+              id="gvl-reference-protected-revisions"
+              class="protected-revisions"
+              aria-live="polite"
+              hidden
+            ></p>
+            <p id="gvl-reference-maintenance-message">
+              Keine GVL-Revisionen.
             </p>
           </article>
 

src/data-maintenance/data-maintenance.js

@@ -1,69 +1,119 @@
 "use strict";
 
-const purgeGvlReferenceDataButton = document.getElementById(
-  "purge-gvl-reference-data-button"
-);
 const gvlReferenceMaintenanceStatus = document.getElementById(
   "gvl-reference-maintenance-status"
 );
+const gvlReferenceProtectedRevisions = document.getElementById(
+  "gvl-reference-protected-revisions"
+);
+const gvlReferenceMaintenanceMessage = document.getElementById(
+  "gvl-reference-maintenance-message"
+);
+const purgeGvlReferenceDataButton = document.getElementById(
+  "purge-gvl-reference-data-button"
+);
 
-document.addEventListener("DOMContentLoaded", () => {
-  purgeGvlReferenceDataButton?.addEventListener("click", async () => {
-    await purgeGvlReferenceData();
+document.addEventListener("DOMContentLoaded", async () => {
+  purgeGvlReferenceDataButton.addEventListener("click", async () => {
+    await purgeUnlockedEvidenceRecords();
   });
+  await renderGvlReferenceMaintenanceStatus();
 });
 
-async function purgeGvlReferenceData() {
-  if (!confirm(buildGvlReferenceDataPurgeConfirmationText())) {
-    renderGvlReferenceMaintenanceStatus("Abgebrochen.");
+async function renderGvlReferenceMaintenanceStatus() {
+  try {
+    const result = await browser.runtime.sendMessage({
+      type: "list_gvl_snapshots"
+    });
+
+    if (!result?.success) {
+      throw new Error(result?.error ?? "list_gvl_snapshots_failed");
+    }
+
+    renderGvlReferenceSnapshotStatus(result.gvlSnapshots ?? []);
+  } catch (error) {
+    renderGvlReferenceStatus("–", true, "Status nicht verfügbar.");
+    renderProtectedRevisions([]);
+    console.warn("VG-Observe GVL maintenance status failed", error);
+  }
+}
+
+function renderGvlReferenceSnapshotStatus(snapshots) {
+  if (!snapshots.length) {
+    renderGvlReferenceStatus("–", true, "Keine GVL-Revisionen.");
+    renderProtectedRevisions([]);
+    return;
+  }
+
+  const protectedRevisions = snapshots
+    .filter((snapshot) => snapshot.workspaceDeleteProtected === true)
+    .map((snapshot) => snapshot.vendorListVersion)
+    .filter((vendorListVersion) => vendorListVersion !== null)
+    .filter((vendorListVersion) => vendorListVersion !== undefined);
+  const allRevisionsDeleteAllowed = snapshots.every((snapshot) => {
+    return snapshot.workspaceDeleteAllowed === true;
+  });
+
+  if (allRevisionsDeleteAllowed) {
+    renderGvlReferenceStatus("🔓", false, "GVL-Revisionen löschbar.");
+  } else if (protectedRevisions.length) {
+    renderGvlReferenceStatus("🔒", true, "GVL-Revisionen geschützt.");
+  } else {
+    renderGvlReferenceStatus("–", true, "Status nicht verfügbar.");
+  }
+
+  renderProtectedRevisions(protectedRevisions);
+}
+
+function renderGvlReferenceStatus(statusSymbol, buttonDisabled, message) {
+  gvlReferenceMaintenanceStatus.textContent = statusSymbol;
+  purgeGvlReferenceDataButton.disabled = buttonDisabled;
+  gvlReferenceMaintenanceMessage.textContent = message;
+}
+
+async function purgeUnlockedEvidenceRecords() {
+  if (
+    !confirm(
+      "Ungesperrte Evidence-Daten mit bestehender Schutzlogik bereinigen?"
+    )
+  ) {
     return;
   }
 
   purgeGvlReferenceDataButton.disabled = true;
-  renderGvlReferenceMaintenanceStatus("GVL-Referenzdaten werden bereinigt...");
+  gvlReferenceMaintenanceMessage.textContent = "Bereinigung läuft...";
 
   try {
     const result = await browser.runtime.sendMessage({
-      type: "purge_gvl_reference_data"
+      type: "purge_unlocked_evidence_records"
     });
 
     if (!result?.success) {
-      throw new Error(result?.error ?? "purge_gvl_reference_data_failed");
+      throw new Error(result?.error ?? "purge_unlocked_evidence_records_failed");
     }
 
-    renderGvlReferenceMaintenanceStatus(
-      buildGvlReferenceDataPurgeSuccessMessage(result)
-    );
+    await renderGvlReferenceMaintenanceStatus();
+    gvlReferenceMaintenanceMessage.textContent = buildPurgeSuccessMessage(result);
   } catch (error) {
-    renderGvlReferenceMaintenanceStatus(
-      "GVL-Referenzdaten konnten nicht bereinigt werden."
-    );
-    console.warn("VG-Observe GVL reference data purge failed", error);
-  } finally {
-    purgeGvlReferenceDataButton.disabled = false;
+    await renderGvlReferenceMaintenanceStatus();
+    gvlReferenceMaintenanceMessage.textContent = "Bereinigung fehlgeschlagen.";
+    console.warn("VG-Observe protected purge failed", error);
   }
 }
 
-function buildGvlReferenceDataPurgeConfirmationText() {
-  return [
-    "GVL-Referenzdaten bereinigen?",
-    "",
-    "Betroffen: GVL-Referenzdaten der Browser-DB.",
-    "Nicht betroffen: Consent-Daten, Request-Beobachtungen, Analyse-Daten.",
-    "",
-    "Diese Aktion entfernt lokale GVL-Referenzdaten aus der Browser-Datenbank."
-  ].join("\n");
+function buildPurgeSuccessMessage(result) {
+  if (Number.isFinite(result.deletedCount)) {
+    return `Bereinigung abgeschlossen: ${result.deletedCount} Records.`;
+  }
+
+  return "Bereinigung abgeschlossen.";
 }
 
-function buildGvlReferenceDataPurgeSuccessMessage(result) {
-  const clearedCount = Object.values(result.clearedStores ?? {}).reduce(
-    (total, count) => total + Number(count ?? 0),
-    0
-  );
-
-  return `GVL-Referenzdaten bereinigt: ${clearedCount} Records entfernt.`;
-}
-
-function renderGvlReferenceMaintenanceStatus(message) {
-  gvlReferenceMaintenanceStatus.textContent = message;
+function renderProtectedRevisions(vendorListVersions) {
+  gvlReferenceProtectedRevisions.hidden = vendorListVersions.length === 0;
+  gvlReferenceProtectedRevisions.textContent = vendorListVersions.length
+    ? `Geschützt: ${vendorListVersions
+        .map((vendorListVersion) => String(vendorListVersion))
+        .join(", ")}`
+    : "";
 }

src/gvl-explorer/gvl-explorer.js

@@ -215,7 +215,7 @@ async function exportSelectedGvlRevisionEvidenceJsonFile() {
     }
 
     downloadGvlRevisionEvidenceJsonExport(result.export);
-    await markGvlRevisionEvidenceVaultCopy(result.export);
+    await markGvlRevisionEvidenceVaultCopy(result.export, verification);
     await renderGvlSnapshots();
     renderGvlEvidenceTransportStatus(
       [
@@ -271,7 +271,10 @@ function downloadGvlRevisionEvidenceJsonExport(exportContainer) {
   setTimeout(() => URL.revokeObjectURL(url), 0);
 }
 
-async function markGvlRevisionEvidenceVaultCopy(exportContainer) {
+async function markGvlRevisionEvidenceVaultCopy(
+  exportContainer,
+  verification = null
+) {
   const snapshotSha256 = exportContainer?.metadata?.snapshotSha256 ?? null;
 
   if (!snapshotSha256) {
@@ -281,7 +284,8 @@ async function markGvlRevisionEvidenceVaultCopy(exportContainer) {
   const result = await browser.runtime.sendMessage({
     type: "mark_gvl_revision_evidence_vault_copy",
     payload: {
-      snapshotSha256
+      snapshotSha256,
+      verification
     }
   });
 
@@ -338,6 +342,11 @@ async function verifyGvlRevisionEvidenceJsonFile() {
       exportContainer
     );
 
+    if (verification.valid) {
+      await markGvlRevisionEvidenceVaultCopy(exportContainer, verification);
+      await renderGvlSnapshots();
+    }
+
     renderGvlEvidenceTransportStatus(
       buildGvlRevisionEvidenceVerificationMessage(verification),
       verification.valid ? "success" : "error"