phase 3 bug fixing

internal/api/router.go

@@ -4,6 +4,8 @@ import (
 	"encoding/json"
 	"io/fs"
 	"net/http"
+	"net/http/httputil"
+	"net/url"
 
 	"github.com/go-chi/chi/v5"
 	chimiddleware "github.com/go-chi/chi/v5/middleware"
@@ -95,11 +97,36 @@ func New(cfg *config.Config, engine *xorm.Engine, store sessions.Store, staticFi
 	})
 
 	r.With(auth.Optional).Get("/ws", wsH.Hub)
-	r.Handle("/*", spaHandler(staticFiles))
+
+	// In debug mode proxy non-API routes to the Vite dev server so :8080 works too.
+	// In production the built React app is embedded and served from staticFiles.
+	if cfg.Debug {
+		r.Handle("/*", viteProxy("http://localhost:5173"))
+	} else {
+		r.Handle("/*", spaHandler(staticFiles))
+	}
 
 	return r
 }
 
+func viteProxy(target string) http.Handler {
+	proxy := &httputil.ReverseProxy{
+		Rewrite: func(r *httputil.ProxyRequest) {
+			r.SetURL(mustParseURL(target))
+			r.Out.Host = r.In.Host
+		},
+	}
+	return proxy
+}
+
+func mustParseURL(raw string) *url.URL {
+	u, err := url.Parse(raw)
+	if err != nil {
+		panic(err)
+	}
+	return u
+}
+
 func spaHandler(staticFiles fs.FS) http.Handler {
 	fileServer := http.FileServer(http.FS(staticFiles))
 	return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {