bump-version.sh

#!/bin/bash

TAG=$1
VERSION=${TAG/-*/}
CURRENT_TAG=$(git tag | grep ^v[0-9] | sort -V | tail -1)
CURRENT_VERSION=${CURRENT_TAG/-*/}

if [[  -z "${VERSION}" ]]; then
    VERSION="${CURRENT_VERSION%.*}.$((${CURRENT_VERSION/*./} + 1))"
    TAG=${VERSION}
    echo "New version is: ${VERSION}"
fi

if [[ ! $TAG =~ ^v[0-9]+\.[0-9]+\.[0-9]+(-[0-9]+)?$ ]]; then
    echo "VERSION must be a semantic version: vMAJOR.MINOR.PATCH or vMAJOR.MINOR.PATCH-RELEASE"
    exit 1
fi

if [[ 'main' != "$(git branch --show-current)" ]]; then
    echo "Not on main git branch!"
    exit 1
fi

if [[ -n "$(git tag -l $VERSION)" ]]; then
    echo "VERSION $VERSION already exists!"
    exit 1
fi

if [[ $VERSION != `(echo $VERSION; git tag | grep ^v[0-9]) | sort -V | tail -1` ]]; then
    echo "$VERSION is not semantically newest!"
    exit 1
fi

if [[ -n "$(git status --porcelain | grep -v '^?? ')" ]]; then
    echo "Cannot set version when working directory has differences"
fi

sed -i "s/^version: .*/version: ${TAG:1}/" helm/Chart.yaml
sed -i "s/^appVersion: .*/appVersion: ${VERSION:1}/" helm/Chart.yaml

git add helm/Chart.yaml
git commit -m "Release $TAG"
git tag $TAG
git push origin main $TAG