website/shared/http/middleware.go

package http

import "net/http"

func CorsMiddleware(next http.Handler, origin string) http.Handler {
	return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
		w.Header().Set("Access-Control-Allow-Credentials", "true")
		w.Header().Set("Access-Control-Allow-Methods", "POST,GET")
		w.Header().Set("Access-Control-Allow-Origin", origin)
		next.ServeHTTP(w, r)
	})
}

func ContentTypeMiddleware(next http.Handler, contentType string) http.Handler {
	return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
		w.Header().Add("Content-Type", contentType)
		next.ServeHTTP(w, r)
	})
}

func OptoutMiddleware(next http.Handler) http.Handler {
	return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
		if _, err := r.Cookie("optout"); err == nil {
			w.WriteHeader(http.StatusNoContent)
			return
		}
		next.ServeHTTP(w, r)
	})
}