GCP kubernetes configuration/credentials fetching

gcpkubeconfig

#!/bin/bash

AUTH_LIST=$(gcloud --format=json auth list)
ACC_LIST=$(echo $AUTH_LIST | jq -r '.[].account')

if [ $(echo "${ACC_LIST}" | wc -l) -gt 1 ]; then
	>&2 echo "Select account:"
	select ACCOUNT in $(echo "${ACC_LIST}"); do
		break
	done
	gcloud config set account "$ACCOUNT"
fi

PROJECT_LIST=$(gcloud projects list --format=json | jq -r '.[].projectId')

if [ $(echo "${PROJECT_LIST}" | wc -l) -gt 1 ]; then
	>&2 echo "Select a project:"
	select PROJECT in $(echo "${PROJECT_LIST}"); do
		break
	done
else
	PROJECT=${PROJECT_LIST}
fi

>&2 echo "Getting cluster list for ${PROJECT}"

CLUSTER_DATA=$(gcloud --project=$PROJECT container clusters list --format=json)
CLUSTER_LIST=$(echo "$CLUSTER_DATA" | jq -r '.[].name')

if [ $(echo "$CLUSTER_LIST" | wc -l) -gt 1 ]; then
	select CLUSTER in $(echo "$CLUSTER_LIST"); do
		break
	done
else
	CLUSTER=$CLUSTER_LIST
fi


ZONE=$(echo "$CLUSTER_DATA" | jq -r 'select( .[].name == "cluster-1") | .[0].zone')

>&2 echo "Getting credentials for $PROJECT $CLUSTER $ZONE"
gcloud container clusters get-credentials "${CLUSTER}" --zone "${ZONE}" --project "${PROJECT}"