initial commit

backend/webui/embed.go

@@ -0,0 +1,31 @@
+// Package webui embeds the compiled React bundle produced by `make build`.
+//
+// The `dist` directory is populated by the build pipeline (npm run build copies
+// frontend/dist into backend/webui/dist). A placeholder index.html is checked
+// in so the backend always compiles and runs, even in a fresh checkout where
+// the frontend has not been built yet.
+package webui
+
+import (
+	"embed"
+	"io/fs"
+)
+
+//go:embed all:dist
+var assets embed.FS
+
+// FS returns the root of the embedded bundle, or nil when the placeholder build
+// is still in place and no real frontend bundle has been compiled.
+func FS() fs.FS {
+	sub, err := fs.Sub(assets, "dist")
+	if err != nil {
+		return nil
+	}
+	if _, err := fs.Stat(sub, "index.html"); err != nil {
+		return nil
+	}
+	return sub
+}
+
+// Assets exposes the raw embedded filesystem, including the dist prefix.
+func Assets() fs.FS { return assets }