package kube

import (
	"fmt"
	"strings"

	"istio.io/istio/pkg/config/constants"
)

// IsInternalGatewayReference returns true if gatewayName is referencing the internal
// Istio Gateway corresponding to a Kubernetes Gateway API gateway.
func IsInternalGatewayReference(gatewayName string) bool {
	parts := strings.SplitN(gatewayName, "/", 2)
	if len(parts) == 2 {
		gatewayName = parts[1]
	}

	vsName := r.Metadata.FullName

	for i, gwName := range vs.Gateways {
		// This is a special-case accepted value
		if gwName == util.MeshGateway {
			continue
		}

		if kubeconfig.IsInternalGatewayReference(gwName) {
			m := msg.NewReferencedInternalGateway(r, vsName.String(), gwName)

			if line, ok := util.ErrorLine(r, fmt.Sprintf(util.VSGateway, i)); ok {
				m.Line = line
			}