Scaffold Vanilla JS Frontend (v3): Create directory, update Makefile/web.go, embed dist/v3

1 files changed, 36 insertions, 33 deletions

diff --git a/web/frontend.go b/web/frontend.go
index d77c974..00074ec 100644
--- a/web/frontend.go
+++ b/web/frontend.go
@@ -8,46 +8,49 @@ import (
 	"strings"
 )
 
-func ServeFrontend(w http.ResponseWriter, r *http.Request) {
-	// Use fs.Sub to treat dist/v2 as the root
-	box, err := fs.Sub(frontendFiles, "dist/v2")
-	if err != nil {
-		http.Error(w, "frontend not found", http.StatusNotFound)
-		return
-	}
+func ServeFrontend(distDir string) http.HandlerFunc {
+	return func(w http.ResponseWriter, r *http.Request) {
+		// Use fs.Sub to treat distDir as the root
+		box, err := fs.Sub(frontendFiles, distDir)
+		if err != nil {
+			http.Error(w, "frontend not found", http.StatusNotFound)
+			return
+		}
 
-	// Get the file path from the URL
-	path := r.URL.Path
-	path = strings.TrimPrefix(path, "/")
+		// Get the file path from the URL
+		path := r.URL.Path
+		path = strings.TrimPrefix(path, "/")
 
-	// If path is empty, it's index.html
-	if path == "" {
-		path = "index.html"
-	}
+		// If path is empty, it's index.html
+		if path == "" {
+			path = "index.html"
+		}
 
-	// Try to open the file
-	f, err := box.Open(path)
-	if err != nil {
-		// If file not found, serve index.html for client-side routing
-		if !strings.Contains(filepath.Base(path), ".") {
-			f, err = box.Open("index.html")
-			if err != nil {
-				http.Error(w, "frontend not found", http.StatusNotFound)
+		// Try to open the file
+		f, err := box.Open(path)
+		if err != nil {
+			// If file not found, serve index.html for client-side routing
+			// but only if it looks like a route (no extension)
+			if !strings.Contains(filepath.Base(path), ".") {
+				f, err = box.Open("index.html")
+				if err != nil {
+					http.Error(w, "frontend not found", http.StatusNotFound)
+					return
+				}
+				path = "index.html"
+			} else {
+				http.Error(w, "not found", http.StatusNotFound)
 				return
 			}
-			path = "index.html"
-		} else {
-			http.Error(w, "not found", http.StatusNotFound)
+		}
+		defer func() { _ = f.Close() }()
+
+		d, err := f.Stat()
+		if err != nil {
+			http.Error(w, "internal error", http.StatusInternalServerError)
 			return
 		}
-	}
-	defer func() { _ = f.Close() }()
 
-	d, err := f.Stat()
-	if err != nil {
-		http.Error(w, "internal error", http.StatusInternalServerError)
-		return
+		http.ServeContent(w, r, path, d.ModTime(), f.(io.ReadSeeker))
 	}
-
-	http.ServeContent(w, r, path, d.ModTime(), f.(io.ReadSeeker))
 }