#!/usr/bin/env bash

# Copyright 2026 PingCAP, Inc.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
#     http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.

set -euo pipefail

# The upstream Grafana chart exposes service.type and loadBalancerIP, but does
# not expose Kubernetes' allocateLoadBalancerNodePorts field. Add it before
# Helm submits the manifest so the API server never allocates a NodePort.
awk '
/^---$/ {
	in_service = 0
}
/^kind: Service$/ {
	in_service = 1
}
{
	print
}
in_service && /^spec:$/ {
	print "  allocateLoadBalancerNodePorts: false"
	patched++
	in_service = 0
}
END {
	if (patched != 1) {
		print "grafana-post-renderer: expected exactly one Service, patched " patched > "/dev/stderr"
		exit 1
	}
}
'