labeler.yml

name: "Pull Request Labeler"
on:
  pull_request:
    types: [ assigned, opened, synchronize, reopened, labeled ]

concurrency:
  group: ${{ github.workflow }}-${{ github.event.pull_request.number || github.ref }}
  cancel-in-progress: true

jobs:
  labeler:
    permissions:
      contents: read
      pull-requests: write
    runs-on: formance-runner
    steps:
      - uses: 'actions/checkout@v4'
        with:
          fetch-depth: 0
      - uses: actions/labeler@v5
        with:
          sync-labels: true
      - name: Retrieve chart changes
        id: chart_changes
        run: |
          CHARTS=$(git diff origin/main --stat | grep -oE 'charts/[^/]+/' | sed 's|charts/||;s|/||' | sort -u | jq -R -s -c 'split("\n") | map(select(. != ""))')
          echo "Changed charts: $CHARTS"
          echo "::set-output name=changed_charts::$CHARTS"

      - name: Label PR based on chart changes
        if: steps.chart_changes.outputs.changed_charts != ''
        uses: actions/github-script@v7
        env:
          CHARTS: ${{ steps.chart_changes.outputs.changed_charts }}
        with:
          script: |
            const charts = JSON.parse(process.env.CHARTS);
            const labels = charts.map(chart => `chart-${chart.trim()}`).filter(label => label.length > 0);

            if (labels.length > 0) {
              console.log(`Applying labels: ${labels.join(', ')}`);
              await github.rest.issues.addLabels({
                owner: context.repo.owner,
                repo: context.repo.repo,
                issue_number: context.issue.number,
                labels: labels
              });
            } else {
              console.log('No charts changed, skipping labeling.');
            }