Fix handling of encrypted unprocessed envelopes

ts/sql/migrations/1320-unprocessed-received-at-date.ts

@@ -0,0 +1,38 @@
+// Copyright 2025 Signal Messenger, LLC
+// SPDX-License-Identifier: AGPL-3.0-only
+
+import type { LoggerType } from '../../types/Logging';
+import { sql } from '../util';
+import type { WritableDB } from '../Interface';
+
+export const version = 1320;
+
+export function updateToSchemaVersion1320(
+  currentVersion: number,
+  db: WritableDB,
+  logger: LoggerType
+): void {
+  if (currentVersion >= 1320) {
+    return;
+  }
+
+  db.transaction(() => {
+    const [query] = sql`
+      DROP INDEX unprocessed_timestamp;
+
+      ALTER TABLE unprocessed
+        ADD COLUMN receivedAtDate INTEGER DEFAULT 0 NOT NULL;
+
+      UPDATE unprocessed
+        SET receivedAtDate = timestamp;
+
+      CREATE INDEX unprocessed_byReceivedAtDate ON unprocessed
+        (receivedAtDate);
+    `;
+    db.exec(query);
+
+    db.pragma('user_version = 1320');
+  })();
+
+  logger.info('updateToSchemaVersion1320: success!');
+}