fix spa fallback for library routes

.gitignore

@@ -31,6 +31,7 @@ logs/
 .tmp-deploy-smoke-cache/
 .tmp-deploy-cache/
 .tmp-deploy-server.*
+.tmp-live-server.*
 .mediastation.pid
 *.log
 *.db

cmd/server/main.go

@@ -200,6 +200,9 @@ func setNoCacheHeaders(c *gin.Context) {
 }
 
 func shouldBypassSPAFallback(path string) bool {
+	if isFrontendLibraryRoute(path) {
+		return false
+	}
 	lower := strings.ToLower(path)
 	for _, exact := range []string{
 		"/emby",
@@ -233,6 +236,33 @@ func shouldBypassSPAFallback(path string) bool {
 	return false
 }
 
+func isFrontendLibraryRoute(path string) bool {
+	const prefix = "/library/"
+	if !strings.HasPrefix(path, prefix) {
+		return false
+	}
+	id := strings.TrimPrefix(path, prefix)
+	if strings.Contains(id, "/") {
+		return false
+	}
+	if len(id) != 36 {
+		return false
+	}
+	for i, ch := range id {
+		switch i {
+		case 8, 13, 18, 23:
+			if ch != '-' {
+				return false
+			}
+		default:
+			if !((ch >= '0' && ch <= '9') || (ch >= 'a' && ch <= 'f') || (ch >= 'A' && ch <= 'F')) {
+				return false
+			}
+		}
+	}
+	return true
+}
+
 func newLogger(cfg *config.Config) (*zap.Logger, error) {
 	if cfg.App.Debug {
 		return zap.NewDevelopment()

cmd/server/main_test.go

@@ -30,7 +30,7 @@ func TestServeSPANoCachesIndexAndServesRoutes(t *testing.T) {
 	router := gin.New()
 	serveSPA(router, webDir)
 
-	for _, path := range []string{"/", "/login", "/media/abc"} {
+	for _, path := range []string{"/", "/login", "/library/e1c3507e-2878-40ae-a0e1-6b6e44b7fa7a", "/media/abc"} {
 		req := httptest.NewRequest(http.MethodGet, path, nil)
 		w := httptest.NewRecorder()
 		router.ServeHTTP(w, req)
@@ -76,6 +76,7 @@ func TestServeSPAServesAssetsImmutableAndBypassesAPIRoutes(t *testing.T) {
 		"/api/missing",
 		"/emby",
 		"/emby/missing",
+		"/Library/VirtualFolders",
 		"/Startup/Configuration",
 		"/QuickConnect/Enabled",
 		"/embywebsocket",