fix(static): move static files to new place for embeding

static/fs.go

@@ -0,0 +1,38 @@
+package static
+
+import (
+	"embed"
+	"io/fs"
+	"net/http"
+)
+
+//go:embed public/*
+var embedFS embed.FS
+
+type EmbedStaticFS struct {
+	http.FileSystem
+}
+
+func NewEmbedStaticFS() (*EmbedStaticFS, error) {
+	// the public folder will temporarily be copied to here in building
+	publicFS, err := fs.Sub(embedFS, "public")
+	if err != nil {
+		return nil, err
+	}
+	httpFS := http.FS(publicFS)
+
+	return &EmbedStaticFS{
+		FileSystem: httpFS,
+	}, nil
+}
+
+func (efs *EmbedStaticFS) Exists(prefix string, path string) bool {
+	// prefix should already be considered by http.FileSystem
+	_, err := efs.Open(path)
+	if err != nil {
+		// TODO: need more checking
+		// if errors.Is(err, fs.ErrNotExist) {
+		return false
+	}
+	return true
+}