Delete pages instead of writing empty files

main.go

@@ -162,9 +162,16 @@ func (h *handler) handlePost(w http.ResponseWriter, r *http.Request, urlPath, fs
 	}
 	content := r.FormValue("content")
 	indexPath := filepath.Join(fsPath, "index.md")
-	if err := os.WriteFile(indexPath, []byte(content), 0644); err != nil {
-		http.Error(w, "write failed: "+err.Error(), http.StatusInternalServerError)
-		return
+	if strings.TrimSpace(content) == "" {
+		if err := os.Remove(indexPath); err != nil && !os.IsNotExist(err) {
+			http.Error(w, "delete failed: "+err.Error(), http.StatusInternalServerError)
+			return
+		}
+	} else {
+		if err := os.WriteFile(indexPath, []byte(content), 0644); err != nil {
+			http.Error(w, "write failed: "+err.Error(), http.StatusInternalServerError)
+			return
+		}
 	}
 	http.Redirect(w, r, urlPath, http.StatusSeeOther)
 }