package middleware

import (
	"net/http"
)

func APIKeyAuth(apiKey string) func(http.Handler) http.Handler {
	return func(next http.Handler) http.Handler {
		return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
			key := r.Header.Get("X-API-Key")
			if key == "" || key != apiKey {
				w.Header().Set("Content-Type", "application/json")
				w.WriteHeader(http.StatusUnauthorized)
				w.Write([]byte(`{"error":{"code":"UNAUTHORIZED","message":"Invalid or missing API key"}}`))
				return
			}
			next.ServeHTTP(w, r)
		})
	}
}