## Used on Renovate PRs to bump the chart version and add a changelog entry
## Reference: https://github.com/stefanzweifel/git-auto-commit-action
## Reference: https://github.com/marketplace/actions/changed-files
name: 'Chart Version Bump and Changelog'

on:
  pull_request:
    types:
      - labeled

permissions:
  contents: write

jobs:
  helm-bumper:
    if: ${{ (contains(github.event.pull_request.labels.*.name, 'renovate')) }}
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@b4ffde65f46336ab88eb53be808477a3936bae11 # v4.1.1
        with:
          token: ${{ secrets.PAT }}
          fetch-depth: 0

      - name: Get changed files
        id: changed-files
        uses: tj-actions/changed-files@ae82ed4ae04587b665efad2f206578aa6f0e8539 # v42.0.0
        with:
          files: charts/{argo-workflows,argo-cd,argo-events,argo-rollouts,argocd-image-updater}/Chart.yaml

      - name: "Bump Version and Changelog"
        run: |
          chartName="$(echo \"${{ steps.changed-files.outputs.all_changed_files }}\" | cut -d '/' -f2)"
          echo "Changed chart name is: $chartName"
          echo "----------------------------------------"

          parentDir="charts/${chartName}"

          # Bump the chart version by one patch version
          version=$(grep '^version:' ${parentDir}/Chart.yaml | awk '{print $2}')
          major=$(echo $version | cut -d. -f1)
          minor=$(echo $version | cut -d. -f2)
          patch=$(echo $version | cut -d. -f3)
          patch=$(expr $patch + 1)
          sed -i "s/^version:.*/version: ${major}.${minor}.${patch}/g" ${parentDir}/Chart.yaml

          # Add a changelog entry
          appVersion=$(grep '^appVersion:' ${parentDir}/Chart.yaml | awk '{print $2}')
          sed -i -e '/^  artifacthub.io\/changes: |/,$d' ${parentDir}/Chart.yaml
          echo "  artifacthub.io/changes: |" >> ${parentDir}/Chart.yaml
          echo "    - kind: changed" >> ${parentDir}/Chart.yaml
          echo "      description: Bump ${chartName} to ${appVersion}" >> ${parentDir}/Chart.yaml
          cat ${parentDir}/Chart.yaml

      - name: "Commit and push changes"
        uses: stefanzweifel/git-auto-commit-action@8756aa072ef5b4a080af5dc8fef36c5d586e521d # v5.0.0
        with:
          commit_options: '--signoff'