perf: precompress and cache assets (#7757)

* perf: precompress and cache assets

* fix cache header

* use startswith

---------

Co-authored-by: mertalev <101130780+mertalev@users.noreply.github.com>

server/src/immich/main.ts

@@ -5,6 +5,7 @@ import { NestFactory } from '@nestjs/core';
 import { NestExpressApplication } from '@nestjs/platform-express';
 import { json } from 'body-parser';
 import cookieParser from 'cookie-parser';
+import sirv from 'sirv';
 import { AppModule } from './app.module';
 import { AppService } from './app.service';
 import { useSwagger } from './app.utils';
@@ -28,7 +29,20 @@ export async function bootstrap() {
 
   const excludePaths = ['/.well-known/immich', '/custom.css'];
   app.setGlobalPrefix('api', { exclude: excludePaths });
-  app.useStaticAssets('www');
+  // copied from https://github.com/sveltejs/kit/blob/679b5989fe62e3964b9a73b712d7b41831aa1f07/packages/adapter-node/src/handler.js#L46
+  // provides serving of precompressed assets and caching of immutable assets
+  app.use(
+    sirv('www', {
+      etag: true,
+      gzip: true,
+      brotli: true,
+      setHeaders: (res, pathname) => {
+        if (pathname.startsWith(`/_app/immutable`) && res.statusCode === 200) {
+          res.setHeader('cache-control', 'public,max-age=31536000,immutable');
+        }
+      },
+    }),
+  );
   app.use(app.get(AppService).ssr(excludePaths));
 
   const server = await app.listen(port);