#!/usr/bin/env bash

set -e

TTL="24h"
CERTIFICATE_GROUP="system:masters"

print_usage() {
  echo "gs-login - login to Giant Swarm managed clusters"
  echo " "
  echo "gs-login [INSTALLATION] [WORKLOAD CLUSTER] [ORGANISATION]"
  echo " "
  echo "Examples:"
  echo "> gs-login gauss"
  echo "> gs-login gauss mywc1"
  echo " "
  echo "Options:"
  echo "-h, --help                show this help text"
  echo "-t, --ttl                 the certificate ttl for the workload cluster login (default: 24h)"
  echo "-g, --certificate-group   the certificate group to login as on the workload cluster (default: system:masters)"
}

while test $# -gt 0; do
  case "$1" in
    -t|--ttl)
      shift
      TTL=$1
      shift
      ;;
    -g|--certificate-group)
      shift
      CERTIFICATE_GROUP=$1
      shift
      ;;
    -h|--help)
      print_usage
      exit 0
      ;;
    *)
      break
      ;;
  esac
done

case $# in
  1)
    kubectl gs login $1 2>/dev/null || opsctl kgs login -i $1
    ;;
  2)
    kubectl gs login $1 --workload-cluster $2 --certificate-group system:masters --certificate-ttl 24h
    ;;
  3)
    kubectl gs login $1 --workload-cluster $2 --certificate-group system:masters --certificate-ttl 24h --organization $3
    ;;
  *)
    print_usage
    exit 1
    ;;
esac