package api import ( "net/http" ) // CORS is a middleware that sets the Access-Control-Allow-Origin header to * (all origins). func CORS(next http.Handler) http.Handler { return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) { // Set CORS headers for all domains w.Header().Set("Access-Control-Allow-Origin", "*") w.Header().Set("Access-Control-Allow-Methods", "GET, POST, OPTIONS, PUT, DELETE") w.Header().Set("Access-Control-Allow-Headers", "Content-Type, Access-Control-Allow-Headers, Authorization, X-Requested-With") // Handle preflight requests if r.Method == "OPTIONS" { w.WriteHeader(http.StatusOK) return } next.ServeHTTP(w, r) }) }