#!/bin/bash

# This scripts expects the following variables to be set:
# CLUSTER_NUMBER        -> the number of liqo clusters
# K8S_VERSION           -> the Kubernetes version
# CNI                   -> the CNI plugin used
# TMPDIR                -> the directory where the test-related files are stored
# BINDIR                -> the directory where the test-related binaries are stored
# TEMPLATE_DIR          -> the directory where to read the cluster templates
# NAMESPACE             -> the namespace where liqo is running
# KUBECONFIGDIR         -> the directory where the kubeconfigs are stored
# LIQO_VERSION          -> the liqo version to test
# INFRA                 -> the Kubernetes provider for the infrastructure
# LIQOCTL               -> the path where liqoctl is stored
# KUBECTL               -> the path where kubectl is stored
# POD_CIDR_OVERLAPPING  -> the pod CIDR of the clusters is overlapping
# CLUSTER_TEMPLATE_FILE -> the file where the cluster template is stored

set -e           # Fail in case of error
set -o nounset   # Fail if undefined variables are used
set -o pipefail  # Fail if one of the piped commands fails

error() {
   local sourcefile=$1
   local lineno=$2
   echo "An error occurred at $sourcefile:$lineno."
}
trap 'error "${BASH_SOURCE}" "${LINENO}"' ERR

FILEPATH=$(realpath "$0")
WORKDIR=$(dirname "$FILEPATH")

# shellcheck disable=SC1091
# shellcheck source=../../utils.sh
source "$WORKDIR/../../utils.sh"

# shellcheck disable=SC1091
# shellcheck source=./const.sh
source "$WORKDIR/const.sh"

PIDS=()
for i in $(seq 1 "${CLUSTER_NUMBER}");
do
  GKE_CLUSTER_ID=$(forge_clustername "${i}")
  GKE_CLUSTER_ZONE=${GKE_ZONES[$i-1]}

	echo "Deleting cluster ${GKE_CLUSTER_ID}"
  if gcloud container clusters describe "${GKE_CLUSTER_ID}" --zone "${GKE_CLUSTER_ZONE}" --project "${GCLOUD_PROJECT_ID}" &> /dev/null; then
    "${GCLOUD}" container clusters delete "${GKE_CLUSTER_ID}" --zone "${GKE_CLUSTER_ZONE}" --project "${GCLOUD_PROJECT_ID}" --quiet &
    PIDS+=($!)
  fi
done

# Delete GKE clusters
for PID in "${PIDS[@]}"; do
    wait "$PID"
done
