#!/bin/bash

# Gets the latest debian package revision within the given agent version.
# Most agent versions will only have one (implicit) debian package revision,
# which is revision #1.  If you create an annotated tag of the form "v<agent
# version>-deb<revision #>" (e.g. v2.0.0-deb2), that will indicate that the
# Debian package should have a new revision.

set -euo pipefail

agent_version=$1
if test -z $agent_version
then
  echo "Usage: $0 agent_version" >&2
  exit 1
fi

deb_tag=$(git describe --abbrev=0 --tags --match "v*-deb*" 2>/dev/null || true)

revision=$(echo -n $deb_tag | sed -e "s/v.*-deb//")

echo -n ${revision:-"1"}