package integration

import (
	"k8s.io/client-go/rest"
	"k8s.io/client-go/tools/clientcmd"
	clientcmdapi "k8s.io/client-go/tools/clientcmd/api"
)

// change from https://github.com/kubernetes/client-go/issues/711#issuecomment-730112049
func getKubeconfig(cfg *rest.Config) ([]byte, error) {
	clusters := make(map[string]*clientcmdapi.Cluster)
	clusters["default-cluster"] = &clientcmdapi.Cluster{
		Server:                   cfg.Host,
		CertificateAuthorityData: cfg.CAData,
	}

	contexts := make(map[string]*clientcmdapi.Context)
	contexts["default-context"] = &clientcmdapi.Context{
		Cluster:   "default-cluster",
		Namespace: "default",
		AuthInfo:  "default-context",
	}

	authinfos := make(map[string]*clientcmdapi.AuthInfo)
	authinfos["default-context"] = &clientcmdapi.AuthInfo{
		// try to cover all auth strategies that aren't plugins
		ClientCertificateData: cfg.CertData,
		ClientKeyData:         cfg.KeyData,
		Token:                 cfg.BearerToken,
		Username:              cfg.Username,
		Password:              cfg.Password,
	}

	clientConfig := clientcmdapi.Config{
		Kind:           "Config",
		APIVersion:     "v1",
		Clusters:       clusters,
		Contexts:       contexts,
		CurrentContext: "default-context",
		AuthInfos:      authinfos,
	}

	data, err := clientcmd.Write(clientConfig)
	return data, err
}