#!/bin/bash
DELETE=0
UPGRADE=0
VERBOSE=0

printHelp () {
  echo "A script to create a Minikube VM."
	echo ""
	echo "Usage: $0 [--delete] [--upgrade] [-v]"
  echo "      --delete Delete/overwrite existing Minikube VM"
  echo "      --upgrade Upgrade Minikube"
	echo "  -v, --verbose increase output verbosity"
  minikube start -h | grep "--" -
  echo ""
  exit 0
}

#if [[ $# -eq 0 ]]; then
#	printHelp
#fi
#while [[ $# -gt 0 ]]; do
#	key="$1"
#	case $key in
#		-h|--help) printHelp ;;
#		--delete) DELETE=1 ;;
#    --upgrade) UPGRADE=1 ;;
#    -v|--verbose) VERBOSE=1 ;;
#	esac
#	shift
#done

msg_info () {
  if [[ $VERBOSE == 1 ]]; then echo "$1"; fi
}

countup () {
  secs=$(expr $(date +%s) - $1)
  printf "\r$2 %02d:%02d:%02d" $((secs/3600)) $(( (secs/60)%60)) $((secs%60))
}

if [[ $DELETE == 1 ]]; then
  msg_info "* Delete old Minikube instance"
  minikube delete
fi
if [[ $UPGRADE == 1 ]]; then
  msg_info "* Upgrade Minikube"
  brew upgrade minikube
fi
msg_info "* Start Minikube"
minikube start $@
if [ ! -z ${no_proxy+x} ]; then
  # Used by the minikube kvm2 driver.
  if [[ $DRIVER == "kvm2" ]]; then no_proxy=$no_proxy,192.168.39.0/24
  # Used by the minikube docker driver’s first cluster.
  elif [[ $DRIVER == "docker" ]]; then no_proxy=$no_proxy,192.168.49.0/24
  # Used by the minikube VM. Configurable for some hypervisors via --host-only-cidr
  else no_proxy=$no_proxy,192.168.99.0/24; fi
  # Used by service cluster IP’s. Configurable via --service-cluster-ip-range
  no_proxy=$no_proxy,10.96.0.0/12,$(minikube ip)
  msg_info "* Add Kubernetes service and Minikube VM IPs to no_proxy and NO_PROXY environment variables. To set them in your environment, source this script or run the following commands:"
  msg_info "  export no_proxy=$no_proxy"
  msg_info "  export NO_PROXY=$no_proxy"
  export no_proxy=$no_proxy
  export NO_PROXY=$no_proxy
fi
msg_info "* Set Docker environment variables. To set them in your environment, source this script or run the following command:"
msg_info '    eval $(minikube docker-env)'
eval $(minikube docker-env)

POD=$(kubectl get pod -n kube-system --field-selector=status.phase=Pending -o name)
msg_info "* You can watch progress with the following commands:"
msg_info "    watch kubectl get pod -n kube-system  --field-selector=status.phase=Pending"
msg_info "    kubectl get events -w -n kube-system"
start=$(date +%s)
while [[ $POD != "" ]]; do
  countup $start "* Wait for Minikube to be ready..."
  POD=$(kubectl get pod -n kube-system --field-selector=status.phase=Pending -o name)
done
echo

msg_info "Here's some things you might want to do in your environment:"
msg_info "* Set Docker environment variables:"
msg_info '    eval $(minikube docker-env)'
if [ ! -z ${no_proxy+x} ]; then
  msg_info "* Add Minikube IP to no_proxy and NO_PROXY environment variables:"
  msg_info "    export no_proxy=$no_proxy,$(minikube ip)"
  msg_info "    export NO_PROXY=$no_proxy"
fi