mercury_bot.yml

name: OWNERS PR Check

on:
  pull_request_target:
    types: [opened, synchronize, reopened, edited, ready_for_review, labeled]

jobs:
  owners-file-check:
    name: OWNERS file PR checker
    runs-on: ubuntu-20.04
    if: github.event.pull_request.draft == false && github.actor == 'redhat-mercury-bot'
    steps:
      - name: Checkout
        uses: actions/checkout@v2
        
      - name: Set up Python 3.x Part 1
        uses: actions/setup-python@v2
        with:
          python-version: "3.9"

      - name: Set up Python 3.x Part 2
        run: |
          # set up python
          python3 -m venv ve1
          cd scripts && ../ve1/bin/pip3 install -r requirements.txt && cd ..
          cd scripts && ../ve1/bin/python3 setup.py install && cd ..

      - name: get files changed
        id: get_files_changed
        env:
          BOT_TOKEN: ${{ secrets.BOT_TOKEN }}
        run: |
          # get files in PR
          ./ve1/bin/pr-artifact --api-url=${{ github.event.pull_request._links.self.href }} \
                                --get-files

      - name: check if only an OWNERS file is pushed
        id: check_for_owners
        env:
          pr_files_py: "${{ steps.get_files_changed.outputs.pr_files }}"
        run: |
          # check if PR contains just one partner OWNERS file
          pr_files=($(echo "$pr_files_py" | tr -d '[],'))
          echo "Files in PR: ${pr_files[@]}"
          eval first_file=${pr_files[0]}
          if [ ${#pr_files[@]} == 1 ]; then
            eval first_file=${pr_files[0]}
            if [[ $first_file == "charts/partners/"*/*"/OWNERS" ]] ; then
                echo "An OWNERS file has been modified or added"
                echo "merge_pr=true" >> $GITHUB_OUTPUT
            else
              echo "The file in the PR is not a partner OWNERS file"
              echo "merge_pr=false" >> $GITHUB_OUTPUT
              echo "msg=ERROR: PR does not include a partner OWNERS file." >> $GITHUB_OUTPUT
            fi
          else
            echo "The PR contains multiple files."
            echo "msg=ERROR: PR contains multiple files." >> $GITHUB_OUTPUT
            echo "merge_pr=false" >> $GITHUB_OUTPUT
          fi

      - name: Comment on PR
        if: ${{ steps.check_for_owners.outputs.merge_pr == 'false' }}
        uses: actions/github-script@v3
        with:
          github-token: ${{ secrets.GITHUB_TOKEN }}
          script: |
              var issue_number = ${{ github.event.number }};
              var comment = "${{ steps.check_for_owners.outputs.msg }}";
              github.issues.createComment({
                owner: context.repo.owner,
                repo: context.repo.repo,
                issue_number: Number(issue_number),
                body: comment
              });

      - name: Reflect on check for OWNERS file result
        if: ${{ steps.check_for_owners.outputs.merge_pr == 'false' }}
        run: |
          # exit with failure if PR is not for a single partner OWNERS file
          echo "The PR was not for a single partner OWNERS file."
          exit 1

      - name: Approve PR
        id: approve_pr
        if: ${{ steps.check_for_owners.outputs.merge_pr == 'true' }}
        uses: hmarr/auto-approve-action@v2
        with:
          github-token: ${{ secrets.GITHUB_TOKEN }}

      - name: Merge PR
        id: merge_pr
        if: ${{ steps.approve_pr.conclusion == 'success' }}
        uses: pascalgn/automerge-action@v0.13.1
        env:
          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
          MERGE_METHOD: squash
          MERGE_LABELS: ""