clear-old-test-rules.yml

name: Remove Stale from test-rules Branch
# This exists because the 'Remove from test-rules Branch' workflow won't work on PRs opened from a fork because it
# won't have permissions. This will just retroactively clean anything by running every few minutes and removing anything
# that doesn't reference an open PR.
on:
  schedule:
    - cron: "*/10 * * * *"
  workflow_dispatch: {}

jobs:
  remove-stale:
    runs-on: ubuntu-20.04
    permissions:
      contents: write
      pull-requests: read

    steps:
      - name: Checkout repository
        uses: actions/checkout@v3
        with:
          ref: "test-rules"
          path: destination

      - name: Get Open PRs
        id: open_prs
        uses: actions/github-script@v4
        with:
          script: |
            github.pulls.list({
              owner: context.repo.owner,
              repo: context.repo.repo,
              state: 'open'
            }).then((result) => {
              const openPRs = result.data.map(pr => pr.number);
              console.log(`::set-output name=open_prs::${openPRs.join(',')}`);
            });

      - name: Delete stale test files
        env:
          OPEN_PRS: ${{ steps.open_prs.outputs.open_prs }}
        run: |
          if [[ "${{ github.repository }}" != "sublime-security/sublime-rules" ]]; then
            echo "This is a forked repository. Skipping the job."
            exit 0
          fi

          echo "Scheduled cleanup" > message.txt
          echo "" >> message.txt
          
          cd destination
          files=$(ls **/*.yml) || true

          for file in $files; do
            file_pr_num=$(yq '.testing_pr' $file)            
            in_open_pr=false
          
            IFS=',' read -ra PR_ARRAY <<< "$OPEN_PRS"
            for pr_num in "${PR_ARRAY[@]}"; do
              if [[ "$pr_num" = "$file_pr_num" ]]; then
                in_open_pr=true
              fi
            done
          
            if [[ "$in_open_pr" = "false" ]]; then
                rm $file
                echo "Removed $file_pr_num" >> ../message.txt
            fi
          done
          
          if [[ -z $(git status --porcelain) ]]; then
            echo "Nothing to do"
            exit 0
          fi
          
          git add -A
          
          git config --global user.name 'Sublime Rule Testing Bot'
          git config --global user.email 'hello@sublimesecurity.com'
          
          git commit --allow-empty -F ../message.txt
          git push origin test-rules