#!/usr/bin/env bash

source .utils

DRY_RUN=0
NAMESPACE="org-giantswarm"
RELEASE="20.0.0-alpha1"
PROVIDER="aws"
AZS="eu-west-1a"
DESCRIPTION="$(whoami)'s test cluster"

print_usage() {
  orange "gs-create-cluster - create a Giant Swarm managed CAPI workload cluster"
  echo " "
  underline "Usage:"
  echo "gs-create-cluster [cluster-name]"
  echo " "
  echo " "
  underline "Options:"
  echo "-h, --help            show this help text"
  echo "-n, --namespace       the namespace the cluster is in (default: org-giantswarm)"
  echo "-r, --release         the namespace the cluster is in (default: 20.0.0-alpha1)"
  echo "-p, --provider        the cloud provider to use (default: aws)"
}

while test $# -gt 0; do
  case "$1" in
    -n|--namespace)
      shift
      NAMESPACE=$1
      shift
      ;;
    -r|--release)
      shift
      RELEASE=$1
      shift
      ;;
    -p|--provider)
      shift
      PROVIDER=$1
      shift
      ;;
    --dry-run)
      DRY_RUN=1
      shift
      ;;
    -h|--help)
      print_usage
      exit 0
      ;;
    *)
      break
      ;;
  esac
done

# Positional args
NAME=${1:-wc001}

PREFIXED_NAMESPACE="org-$NAMESPACE"
case $NAMESPACE in org-*)
  PREFIXED_NAMESPACE="$NAMESPACE"
  NAMESPACE=${NAMESPACE#"org-"}
esac

CAPA_CLUSTER="--provider aws --release ${RELEASE}"
CAPZ_CLUSTER="--provider azure --release ${RELEASE}"
CAPG_CLUSTER="--provider gcp --gcp-project giantswarm-352614 --region europe-west3 --gcp-failure-domains europe-west3-a --gcp-machine-deployment-failure-domain europe-west3-a"
TEMPLATE_ARGS="--name ${NAME:0:5} --organization ${NAMESPACE}"
case "${PROVIDER}" in
  aws)
    TEMPLATE_ARGS="${TEMPLATE_ARGS} ${CAPA_CLUSTER}"
    ;;
  gcp)
    TEMPLATE_ARGS="${TEMPLATE_ARGS} ${CAPG_CLUSTER}"
    ;;
  azure)
    TEMPLATE_ARGS="${TEMPLATE_ARGS} ${CAPZ_CLUSTER}"
    ;;
  *)
    echo "Unsupported provider type"
    exit 1
    ;;
esac

echo "✨  Pre-flight checks"
gs-get-cluster --namespace ${PREFIXED_NAMESPACE} ${NAME} &>/dev/null
if [ $? -eq 0 ]; then
  echo "Cluster named '${NAME}' already exists"
  exit 1
elif [[ "${PROVIDER}" = "aws" ]]; then
  echo "Cleaning up any old awsclusterroleidentities..."
  kubectl delete --namespace ${PREFIXED_NAMESPACE} awsclusterroleidentities ${NAME} 2>/dev/null
fi

echo "✨  Creating a new ${PROVIDER} cluster called '${NAMESPACE}/${NAME}' with release '${RELEASE}'"
if [[ $DRY_RUN = 1 ]]; then
  echo kubectl-gs template cluster ${TEMPLATE_ARGS} --description "${DESCRIPTION}"
  kubectl-gs template cluster ${TEMPLATE_ARGS} --description "${DESCRIPTION}"
else
  kubectl-gs template cluster ${TEMPLATE_ARGS} --description "${DESCRIPTION}" | kubectl apply -f -
fi

if [[ $DRY_RUN = 0 ]]; then
  sleep 10
  echo "✨  Checking status..."
  gs-get-cluster --namespace ${PREFIXED_NAMESPACE} ${NAME}
fi