lint_and_release.yml

name: Helm Chart Lint and Release
on:
  push:
    branches:
      - main
  pull_request:
  workflow_dispatch:

jobs:
  helm-lint:
    name: Helm lint
    runs-on: ubuntu-latest
    steps:
      - name: Check out repo hosting code
        uses: actions/checkout@v3
        with:
          fetch-depth: 0
      - name: Set up Helm
        uses: azure/setup-helm@v3
      - name: Run helm lint
        run: helm lint cloudprober/.

  paths-filter:
    name: Filter Chart.yaml
    outputs:
      charts_yaml_changing: ${{ steps.filter.outputs.chartYaml }}
    runs-on: ubuntu-latest
    needs: [helm-lint]
    steps:
      - uses: actions/checkout@v3
      - uses: dorny/paths-filter@v2
        id: filter
        with:
          filters: |
            chartYaml:
              - 'cloudprober/Chart.yaml'

  chart-release:
    name: Release chart
    runs-on: ubuntu-latest
    needs: [paths-filter, helm-lint]
    if: needs.paths-filter.outputs.charts_yaml_changing == 'true'
    steps:
      - name: Check out repo hosting code
        uses: actions/checkout@v3
        with:
          fetch-depth: 0

      - uses: dorny/paths-filter@v2
        id: filter
        with:
          filters: |
            chartYaml:
              - 'cloudprober/Chart.yaml'

      - name: Compute chart version
        run: |-
          baseVersion=$(sed -n '/version: /s/version: //p' cloudprober/Chart.yaml)
          echo ">> Base version: $baseVersion"
          bv=( ${baseVersion//./ } )

          appVersion=$(sed -n '/appVersion: /s/appVersion: //p' cloudprober/Chart.yaml)
          echo ">> App version: $appVersion"
          cpVersion=${appVersion/v/}
          cpVersion=$(echo $cpVersion | tr -d "'")
          echo ">> Cloudprober version: $cpVersion"
          cv=( ${cpVersion//./ } )

          newVersion=$((${bv[0]} + ${cv[0]})).$((${bv[1]} + ${cv[1]})).$((${bv[2]} + ${cv[2]}))
          echo ">> New version: $newVersion"
          echo "CHART_VERSION=${newVersion}" >> $GITHUB_ENV

      - name: Set up Helm
        uses: azure/setup-helm@v3

      - name: Create tag
        uses: actions/github-script@v5
        with:
          script: |
            github.rest.git.createRef({
              owner: context.repo.owner,
              repo: context.repo.repo,
              ref: 'refs/tags/${{ env.CHART_VERSION }}',
              sha: context.sha
            })

      - name: Package chart and build index
        run: |-
          git worktree add repo gh-pages
          cd repo
          helm package ../cloudprober/. --version=${CHART_VERSION} -d packages
          helm repo index . --url https://helm.cloudprober.org
          git add *
          git status

      - name: Push release
        if: github.ref == 'refs/heads/main' || startsWith(github.ref, 'refs/tags')
        run: |-
          cd repo
          git add *
          git config user.name "Manu Garg"
          git config user.email "manugarg@gmail.com"
          git commit -m "[automated] Update helm charts repo" || exit 0
          git push