no-main-prs.yml

name: Block PRs to main
on:
  pull_request_target:
    types: [opened]
    branches: [main]

jobs:
  close:
    runs-on: ubuntu-latest
    permissions:
      pull-requests: write
    steps:
      - uses: actions/github-script@v7
        with:
          script: |
            await github.rest.issues.createComment({
              owner: context.repo.owner,
              repo: context.repo.repo,
              issue_number: context.payload.pull_request.number,
              body: `Thank you for your contribution! However, the main branch on GitHub is not used for this project. Please submit patches to the main branch of the online repo at https://gerrit.collaboraoffice.com.\n\nSee [CONTRIBUTING.md](https://github.com/CollaboraOnline/online/blob/main/CONTRIBUTING.md) for details. This PR has been automatically closed.`
            });
            await github.rest.pulls.update({
              owner: context.repo.owner,
              repo: context.repo.repo,
              pull_number: context.payload.pull_request.number,
              state: 'closed'
            });