Improvements to the media editor

ts/util/normalizeAci.ts

@@ -0,0 +1,42 @@
+// Copyright 2023 Signal Messenger, LLC
+// SPDX-License-Identifier: AGPL-3.0-only
+
+import type { AciString } from '../types/ServiceId';
+import type { LoggerType } from '../types/Logging';
+import * as log from '../logging/log';
+import { isAciString } from './isAciString';
+
+export function normalizeAci(
+  rawAci: string,
+  context: string,
+  logger?: Pick<LoggerType, 'warn'>
+): AciString;
+
+export function normalizeAci(
+  rawAci: string | undefined | null,
+  context: string,
+  logger?: Pick<LoggerType, 'warn'>
+): AciString | undefined;
+
+export function normalizeAci(
+  rawAci: string | undefined | null,
+  context: string,
+  logger: Pick<LoggerType, 'warn'> = log
+): AciString | undefined {
+  if (rawAci == null) {
+    return undefined;
+  }
+
+  const result = rawAci.toLowerCase();
+
+  if (!isAciString(result)) {
+    logger.warn(
+      `Normalizing invalid serviceId: ${rawAci} to ${result} in context "${context}"`
+    );
+
+    // Cast anyway we don't want to throw here
+    return result as AciString;
+  }
+
+  return result;
+}