close_PR_and_delete_branch.yml

name: Close PR and delete branch
on:
  issue_comment:
    types: [created]

jobs:
  CloseFinishedPR:
    if: github.event.issue.pull_request && contains(github.event.issue.labels.*.name, 'auto-generated')
    runs-on: ubuntu-latest
    steps:
      - name: Install jq
        run: sudo apt-get install jq
      - name: Checkout repository
        uses: actions/checkout@v2
      - name: Set env variables
        run: |
          echo "PR_DELETE=$(jq -r '.PR_DELETE' keywords.json)" >> $GITHUB_ENV
      - name: Close PR
        uses: actions/github-script@v3
        with:
          github-token: ${{secrets.GITHUB_TOKEN}}
          script: |
            const prComment = context.payload.comment.body;
            if (!prComment.includes(process.env.PR_DELETE)) {
              console.log(`The PR comment does not contain the string "${process.env.PR_DELETE}".`);
              return;
            }
            await github.pulls.update({
              owner: context.repo.owner,
              repo: context.repo.repo,
              pull_number: context.issue.number,
              state: 'closed'
            });
      - name: Delete branch
        uses: actions/github-script@v3
        with:
          github-token: ${{secrets.GITHUB_TOKEN}}
          script: |
            const prComment = context.payload.comment.body;
            if (!prComment.includes(process.env.PR_DELETE)) {
              console.log(`The PR comment does not contain the string "${process.env.PR_DELETE}".`);
              return;
            }
            const pr = await github.pulls.get({
              owner: context.repo.owner,
              repo: context.repo.repo,
              pull_number: context.issue.number
            });
            const branchName = pr.data.head.ref;
            await github.git.deleteRef({
              owner: context.repo.owner,
              repo: context.repo.repo,
              ref: 'heads/' + branchName
            });