From 4a9c3a645487e4e718751d6933063c6ea95c2b4d Mon Sep 17 00:00:00 2001
From: dtonon <git@dtonon.com>
Date: Tue, 22 Sep 2026 16:01:51 +0200
Subject: [PATCH] Add a config to manage assets when building specific
 instances

---
 .env.example     |  2 +-
 README.md        |  2 +-
 svelte.config.js | 14 ++++++++++++++
 3 files changed, 16 insertions(+), 2 deletions(-)

diff --git a/.env.example b/.env.example
index fe99724..6c96c15 100644
--- a/.env.example
+++ b/.env.example
@@ -17,4 +17,4 @@ PUBLIC_BLOSSOM_URL=                    # Blossom server URL for uploads (e.g., h
 # Theme color overrides — quote the value, a leading # is read as a comment otherwise
 PUBLIC_ACCENT_COLOR=                   # override the accent color (default #e32a6d), e.g. "#00ff00"; hover shade derived
 PUBLIC_SECONDARY_COLOR=                # override the secondary color (default #ffaf25), e.g. "#0000ff"; hover shade derived
-PUBLIC_FAVICON=                        # favicon URL (absolute, or /favicon.png for a file in static/); default is a filled circle in the accent color
+PUBLIC_FAVICON=                        # favicon URL (absolute, or /favicon.png for a file in static/ or .local/<mode>/static/); default is a filled circle in the accent color
diff --git a/README.md b/README.md
index 1bc50a0..bb279b2 100644
--- a/README.md
+++ b/README.md
@@ -104,7 +104,7 @@ Preview a build locally with `npm run preview` (static) or `node --env-file=.env
 
 `just deploy <host>` rsyncs the static bundle to `~/squalk/` on the host and purges the Cloudflare cache.
 
-`just deploy-ssr <mode>` builds with `--mode <mode>` (so vite bakes `.env.<mode>` in), ships the Node build, `package.json`/`package-lock.json` and `.env.<mode>` (as `.env` in the app dir, since the server reads the `PUBLIC_*` values at runtime), runs `npm ci --omit=dev` and restarts the instance's systemd unit. Everything instance-specific lives in `.env.<mode>.local` (gitignored, never shipped): `DEPLOY_HOST`, `DEPLOY_DIR` and `DEPLOY_SERVICE` (all required), plus the Cloudflare credentials (`CF_ZONE_ID`/`CF_API_TOKEN`) for the cache purge. Multiple instances coexist by giving each its own mode, directory, unit and port. On the host you need:
+`just deploy-ssr <mode>` builds with `--mode <mode>` (so vite bakes `.env.<mode>` in), ships the Node build, `package.json`/`package-lock.json` and `.env.<mode>` (as `.env` in the app dir, since the server reads the `PUBLIC_*` values at runtime), runs `npm ci --omit=dev` and restarts the instance's systemd unit. Everything instance-specific lives in `.env.<mode>.local` (gitignored, never shipped): `DEPLOY_HOST`, `DEPLOY_DIR` and `DEPLOY_SERVICE` (all required), plus the Cloudflare credentials (`CF_ZONE_ID`/`CF_API_TOKEN`) for the cache purge. Multiple instances coexist by giving each its own mode, directory, unit and port. Files an instance needs served at its root (a favicon, say) go in `.local/<mode>/static/` (gitignored): when that folder exists, the build ships it instead of the shared `static/`. On the host you need:
 
 - Node 22 or newer (the relay client uses the built-in `WebSocket`).
 - The unit from [`deploy/production-example.service`](deploy/production-example.service), with `ORIGIN` set to the public URL — it feeds canonical links, `robots.txt` and the sitemap.
diff --git a/svelte.config.js b/svelte.config.js
index 75459b0..661e05d 100644
--- a/svelte.config.js
+++ b/svelte.config.js
@@ -1,3 +1,4 @@
+import { existsSync } from "node:fs";
 import { loadEnv } from "vite";
 import adapterNode from "@sveltejs/adapter-node";
 import adapterStatic from "@sveltejs/adapter-static";
@@ -12,10 +13,23 @@ const env = loadEnv(
 );
 const ssr = (process.env.PUBLIC_SSR ?? env.PUBLIC_SSR) === "yes";
 
+// Instance assets: a build run with `--mode <mode>` serves the files in
+// .local/<mode>/static (gitignored) instead of the shared static/ folder.
+const argv = process.argv;
+const modeIdx = argv.findIndex((a) => a === "--mode" || a === "-m");
+const mode =
+  modeIdx !== -1
+    ? argv[modeIdx + 1]
+    : argv.find((a) => a.startsWith("--mode="))?.slice(7);
+const instanceAssets = mode ? `.local/${mode}/static` : undefined;
+const assets =
+  instanceAssets && existsSync(instanceAssets) ? instanceAssets : "static";
+
 /** @type {import('@sveltejs/kit').Config} */
 const config = {
   kit: {
     adapter: ssr ? adapterNode() : adapterStatic({ fallback: "index.html" }),
+    files: { assets },
   },
 };