feat(m4): SvelteKit frontend - today, week, history, settings views

internal/handler/router.go

@@ -1,6 +1,7 @@
 package handler
 
 import (
+	"io/fs"
 	"net/http"
 
 	"github.com/go-chi/chi/v5"
@@ -9,7 +10,14 @@ import (
 )
 
 // NewRouter builds the full HTTP router.
-func NewRouter(authToken string, entrySvc *service.EntryService, daySvc *service.DayService, settingsSvc *service.SettingsService, weekSvc *service.WeekService) http.Handler {
+func NewRouter(
+	authToken string,
+	entrySvc *service.EntryService,
+	daySvc *service.DayService,
+	settingsSvc *service.SettingsService,
+	weekSvc *service.WeekService,
+	staticFiles fs.FS,
+) http.Handler {
 	r := chi.NewRouter()
 	r.Use(middleware.RequestID)
 	r.Use(middleware.RealIP)
@@ -38,5 +46,23 @@ func NewRouter(authToken string, entrySvc *service.EntryService, daySvc *service
 		weekH.Routes(r)
 	})
 
+	// Serve embedded SPA if available (production build)
+	if staticFiles != nil {
+		fileServer := http.FileServer(http.FS(staticFiles))
+		r.Get("/*", func(w http.ResponseWriter, r *http.Request) {
+			// Try to open the requested path; fall back to index.html for SPA routing
+			path := r.URL.Path
+			if path == "/" || path == "" {
+				path = "index.html"
+			} else {
+				path = path[1:] // strip leading slash
+			}
+			if _, err := staticFiles.Open(path); err != nil {
+				r.URL.Path = "/"
+			}
+			fileServer.ServeHTTP(w, r)
+		})
+	}
+
 	return r
 }