add-feature-label.yml

name: Add Feature label

on:
 - pull_request_target

jobs:
  add-feature-label:
    runs-on: ubuntu-latest
    steps:
      - name: Checkout code
        uses: actions/checkout@v2
      - name: Find new files in src directory
        run: |
          NEW_FILES=$(git diff --name-only HEAD^ HEAD)
          CHANGED_FILES=()
          for file in $NEW_FILES; do
            if [[ $file == "src/"* ]]; then
              CHANGED_FILES+=("$file")
            fi
          done
          echo "::set-output name=changed_files::${CHANGED_FILES[*]}"
        id: find-files
      - name: Add Feature label
        if: ${{ steps.find-files.outputs.changed_files != '' }}
        uses: actions/github-script@v4
        with:
          github-token: ${{ secrets.GITHUB_TOKEN }}
          script: |
            const issue = await github.issues.get(context.issue);
            const labels = issue.data.labels.map(label => label.name);
            if (!labels.includes('Feature')) {
              await github.issues.addLabels({
                owner: context.repo.owner,
                repo: context.repo.repo,
                issue_number: context.issue.number,
                labels: ['Feature']
              });
            }