middleware.go

package apieasy

import (
	"net/http"
)

type MiddlewareFunc func(http.Handler) http.Handler

func ApiEasyCorsMiddlewareDefault(next http.Handler) http.Handler {
	return http.HandlerFunc(func(w http.ResponseWriter, req *http.Request) {
		w.Header().Set("Access-Control-Allow-Origin", "*") // any source
		w.Header().Set("Access-Control-Allow-Methods", "GET, POST, PUT, DELETE, OPTIONS")
		w.Header().Set("Access-Control-Allow-Headers", "Content-Type, Authorization")
		w.Header().Set("Access-Control-Max-Age", "3600") // Allow caching for a period of time (in seconds)
		if req.Method == "OPTIONS" {
			w.WriteHeader(http.StatusNoContent)
			return
		}
		next.ServeHTTP(w, req)
	})
}

func SetCorsMiddleware(allowedOrigins, allowedMethods, allowedHeaders string) func(http.Handler) http.Handler {
	return func(next http.Handler) http.Handler {
		return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
			w.Header().Set("Access-Control-Allow-Origin", allowedOrigins)
			w.Header().Set("Access-Control-Allow-Methods", allowedMethods)
			w.Header().Set("Access-Control-Allow-Headers", allowedHeaders)
			if r.Method == "OPTIONS" {
				w.WriteHeader(http.StatusNoContent)
				return
			}

			next.ServeHTTP(w, r)
		})
	}
}