pr_comment.yml

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name: PR comment

on:
  pull_request_target:
    types:
      - opened

permissions:
  contents: read
  issues: write
  pull-requests: write

jobs:
  preview-url:
    name: Preview URL
    runs-on: ubuntu-latest
    steps:
      - name: Comment
        env:
          GH_TOKEN: ${{ github.token }}
          PR_REPOSITORY: ${{ github.event.pull_request.base.repo.full_name }}
          FORK_REPOSITORY: ${{ github.event.pull_request.head.repo.full_name }}
          PR_NUMBER: ${{ github.event.number }}
        run: |
          configure_url="https://github.com/apache/arrow-site/blob/main/README.md#forks"
          fork_owner=${FORK_REPOSITORY%/*}
          fork_repository=${FORK_REPOSITORY#*/}
          {
            echo "Preview URL: https://${fork_owner}.github.io/${fork_repository}"
            echo ""
            echo "If the preview URL doesn't work, you may have forgotten to configure your fork repository for preview."
            echo "See ${configure_url} for instructions on how to configure."
          } | tee body.md
          gh pr comment ${PR_NUMBER} \
            --body-file body.md \
            --repo ${PR_REPOSITORY}