check_for_release.yaml

name: Check for new release

on:
  pull_request:
    types: [opened, synchronize, labeled, unlabeled]

jobs:
  check_for_release:
    name: Check For Release
    runs-on: ubuntu-latest

    steps:
      - name: Checkout code
        uses: actions/checkout@v4
        with:
          fetch-depth: 0

      - name: Check for appVersion changes
        run: |
          echo "Checking for appVersion changes..."
          if git diff origin/${{ github.base_ref }} -- deployments/chart/Chart.yaml | grep -qe "^[+-]appVersion: "; then
            app_version_change=$(echo "version changed")
            echo "app_version_change=$app_version_change" >> $GITHUB_ENV
          else
            app_version_change=$(echo "No appVersion changes detected.")
            echo "app_version_change=$app_version_change" >> $GITHUB_ENV
          fi

      - name: Remove new version label
        if: ${{ env.app_version_change == 'No appVersion changes detected.' }}
        run: |
          echo "No appVersion changes detected. Removing new version label"
          gh pr edit ${{ github.event.pull_request.number }} --remove-label "new release"
        env:
          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}

      - name: Fail if changes occured
        if: ${{ !contains(github.event.pull_request.labels.*.name, 'new release') }}
        run: |
          if [ "${{ env.app_version_change }}" == "version changed" ]; then
            gh pr edit ${{ github.event.pull_request.number }} --add-label "needs approval"
            echo "Version changed, exiting..."
            exit 1
          else
            echo "No appVersion changes detected."
          fi
        env:
          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}

      - name: Remove approval label
        run: |
          gh pr edit ${{ github.event.pull_request.number }} --remove-label "needs approval"
        env:
          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}

  post_message:
    name: Post Message To Warn Of New Release
    runs-on: ubuntu-latest
    needs: check_for_release
    if: ${{ failure() && !contains(github.event.pull_request.labels.*.name, 'needs approval') && github.event.action != 'labeled' && github.event.action != 'unlabeled' }}
    permissions:
      contents: write
      pull-requests: write

    steps:
      - name: Checkout code
        uses: actions/checkout@v4
        with:
          fetch-depth: 0

      - name: Extract appVersion
        id: extract_appversion
        run: |
          appversion=$(yq e '.appVersion' ./deployments/chart/Chart.yaml)
          echo "appversion=$appversion" >> $GITHUB_ENV

      - name: Post warning comment
        uses: peter-evans/create-or-update-comment@v4
        with:
          token: ${{ secrets.GITHUB_TOKEN }}
          issue-number: ${{ github.event.pull_request.number }}
          body: "⚠️ Warning: Merging this PR will result in a new release because the `appVersion` in Chart.yaml has changed to `${{ env.appversion }}`. Please confirm this by adding the `new release` label before merging."