#!/bin/bash
set -e

usage () {
	echo "usage: $0 tag disk_filename"
	exit 1
}

[[ $# -eq 2 ]] || usage
tag="$1"
disk_filename="$2"

cd "$(dirname $0)"
[[ -f "$disk_filename" && -r "$disk_filename" ]] || { echo "$disk_filename does not exist, is not a regular file, or is not readable"; exit 1; }
[[ "$disk_filename" == *.xz ]] || { echo "$disk_filename does not appear to be an xz-compressed disk image"; exit 1; }

sed "s!<TAG>!${tag}!" ./k8s/deployment.yaml.template > ./k8s/deployment.yaml

echo "Creating PVC..."
kubectl apply -f ./k8s/pvc.yaml
echo "Creating temporary pod..."
kubectl apply -f ./k8s/pod-tmp.yaml
echo "Waiting for temporary pod..."
while ! kubectl get pod pdp-tmp|grep -q Running; do sleep 1; done
echo "Checking for disk image..."
if ! kubectl exec -it pdp-tmp -- test -f /mnt/rq0.dsk &>/dev/null; then
	echo "Uploading compressed disk image..."
	kubectl exec pdp-tmp -- rm -f /mnt/rq0.dsk.xz
	kubectl cp "$disk_filename" pdp-tmp:/mnt/rq0.dsk.xz
	echo "Extracting disk image..."
	kubectl exec pdp-tmp -- apk add xz
	kubectl exec pdp-tmp -- xz -d /mnt/rq0.dsk.xz
fi
echo "Removing temporary pod..."
kubectl delete -f ./k8s/pod-tmp.yaml
echo "Creating PDP deployment..."
kubectl apply -f ./k8s/deployment.yaml
echo "Creating services..."
for i in ./k8s/svc-*.yaml; do kubectl apply -f "$i"; done
echo "Done! Optionally, run ./k8s/configure-metallb.sh to put the services on an external IP."