package http import "net/http" // FileHandler represents an HTTP API handler for managing static files. type FileHandler struct { http.Handler } func newFileHandler(assetPath string) *FileHandler { h := &FileHandler{ Handler: http.FileServer(http.Dir(assetPath)), } return h } func (fileHandler *FileHandler) ServeHTTP(w http.ResponseWriter, r *http.Request) { w.Header().Set("Cache-Control", "max-age=31536000") fileHandler.Handler.ServeHTTP(w, r) }