fix(web): preserve query in subpath redirects

apps/desktop/vite.config.ts

@@ -2,6 +2,7 @@ import { defineConfig } from "vite";
 import vue from "@vitejs/plugin-vue";
 import tailwindcss from "@tailwindcss/vite";
 import path from "path";
+import { publicBasePathRedirectPlugin } from "./vitePublicBasePathRedirect";
 
 const host = process.env.TAURI_DEV_HOST;
 const isTauri = !!host || !!process.env.TAURI_ENV_ARCH;
@@ -63,7 +64,7 @@ const backendUrl = process.env.DBX_BACKEND_URL || "http://localhost:4224";
 export default defineConfig(async () => ({
   root: import.meta.dirname,
   base: viteBase,
-  plugins: [vue(), tailwindcss()],
+  plugins: [publicBasePathRedirectPlugin(publicBasePath), vue(), tailwindcss()],
   resolve: {
     alias: {
       "@": path.resolve(import.meta.dirname, "./src"),

apps/desktop/vitePublicBasePathRedirect.ts

@@ -0,0 +1,35 @@
+import type { Connect, Plugin } from "vite";
+
+export function publicBasePathRedirectLocation(requestUrl: string | undefined, publicBasePath: string): string | null {
+  if (!requestUrl || !publicBasePath || publicBasePath === "/") return null;
+
+  const queryStart = requestUrl.indexOf("?");
+  const requestPath = queryStart >= 0 ? requestUrl.slice(0, queryStart) : requestUrl;
+  if (requestPath !== publicBasePath) return null;
+
+  const query = queryStart >= 0 ? requestUrl.slice(queryStart) : "";
+  return `${publicBasePath}/${query}`;
+}
+
+export function publicBasePathRedirectMiddleware(publicBasePath: string): Connect.NextHandleFunction {
+  return (request, response, next) => {
+    const location = publicBasePathRedirectLocation(request.url, publicBasePath);
+    if (!location) {
+      next();
+      return;
+    }
+
+    response.statusCode = 308;
+    response.setHeader("Location", location);
+    response.end();
+  };
+}
+
+export function publicBasePathRedirectPlugin(publicBasePath: string): Plugin {
+  return {
+    name: "dbx-public-base-path-redirect",
+    configureServer(server) {
+      server.middlewares.use(publicBasePathRedirectMiddleware(publicBasePath));
+    },
+  };
+}