feat: view the user's app version on the user page (#21345)

Co-authored-by: Daniel Dietzler <mail@ddietzler.dev>

server/src/utils/request.ts

@@ -1,5 +1,22 @@
+import { IncomingHttpHeaders } from 'node:http';
+import { UAParser } from 'ua-parser-js';
+
 export const fromChecksum = (checksum: string): Buffer => {
   return Buffer.from(checksum, checksum.length === 28 ? 'base64' : 'hex');
 };
 
 export const fromMaybeArray = <T>(param: T | T[]) => (Array.isArray(param) ? param[0] : param);
+
+const getAppVersionFromUA = (ua: string) =>
+  ua.match(/^Immich_(?:Android|iOS)_(?<appVersion>.+)$/)?.groups?.appVersion ?? null;
+
+export const getUserAgentDetails = (headers: IncomingHttpHeaders) => {
+  const userAgent = UAParser(headers['user-agent']);
+  const appVersion = getAppVersionFromUA(headers['user-agent'] ?? '');
+
+  return {
+    deviceType: userAgent.browser.name || userAgent.device.type || (headers['devicemodel'] as string) || '',
+    deviceOS: userAgent.os.name || (headers['devicetype'] as string) || '',
+    appVersion,
+  };
+};