setup.yaml

name: Setup
on: push

jobs:
  setup:
    if: (github.event.commits[0].message == 'Initial commit') && (github.run_number == 1)
    runs-on: ubuntu-latest
    steps:

    - name: Set up Python
      uses: actions/setup-python@v1
      with:
        python-version: 3.6

    - name: Copy Repository Contents
      uses: actions/checkout@v2
        
    - name: modify files
      run: |
        import re, os
        from pathlib import Path
        from configparser import ConfigParser
        config = ConfigParser()

        nwo = os.getenv('GITHUB_REPOSITORY')
        username, repo_name = nwo.split('/')
        readme_template_path = Path('_fastpages_docs/README_TEMPLATE.md')
        readme_path = Path('README.md')
        config_path = Path('_config.yml')
        pr_msg_path = Path('_fastpages_docs/_setup_pr_template.md')
        settings = Path('_action_files/settings.ini')

        assert readme_template_path.exists(), 'Did not find _fastpages_docs/README_TEMPLATE.md in the current directory!'
        assert readme_path.exists(), 'Did not find README.md in the current directory!'
        assert config_path.exists(), 'Did not find _config.yml in the current directory!'
        assert pr_msg_path.exists(), 'Did not find _fastpages_docs/_setup_pr_template.md in the current directory!'
        assert settings.exists(), 'Did not find _action_files/settings.ini in the current directory!'
        
        # edit settings.ini file to inject baseurl
        config.read(settings)
        config['DEFAULT']['baseurl'] = f'/{repo_name}'
        with open('_action_files/settings.ini', 'w') as configfile:
          config.write(configfile)

        # replace content of README with template
        readme = readme_template_path.read_text().replace('{_username_}', username).replace('{_repo_name_}', repo_name)
        readme_path.write_text(readme)
        
        # update _config.yml
        cfg = config_path.read_text()
        cfg = re.sub(r'^(github_username: )(fastai)', r'\1{}'.format(username), cfg, flags=re.MULTILINE)
        cfg = re.sub(r'^(baseurl: )("")', r'\1"/{}"'.format(repo_name), cfg, flags=re.MULTILINE)
        cfg = re.sub(r'^(github_repo: ")(fastpages)', r'\1{}'.format(repo_name), cfg, flags=re.MULTILINE)
        cfg = re.sub(r'^(url: "https://)(fastpages.fast.ai)(")', r'\1{}.github.io\3'.format(username), cfg, flags=re.MULTILINE)
        config_path.write_text(cfg)

        # prepare the pr message
        pr = pr_msg_path.read_text().replace('{_username_}', username).replace('{_repo_name_}', repo_name)
        pr_msg_path.write_text(pr)
      shell: python

    - name: commit changes
      run: |
        git config --global user.email "${GH_EMAIL}"
        git config --global user.name "${GH_USERNAME}"
        git checkout -B fastpages-automated-setup
        git rm CNAME action.yml
        git rm _notebooks/2020-02-21-introducing-fastpages.ipynb
        git rm _posts/2020-03-06-fastpages-actions.md
        git rm -rf images/fastpages_posts
        git rm .github/workflows/chatops.yaml
        git rm .github/workflows/docker.yaml
        git rm .github/workflows/docker-nbdev.yaml
        git rm .github/ISSUE_TEMPLATE/bug.md
        git rm .github/ISSUE_TEMPLATE/feature_request.md
        git add _config.yml README.md _fastpages_docs/ _action_files/settings.ini
        git commit -m'setup repo'
        git push -f --set-upstream origin fastpages-automated-setup
      env: 
        GH_EMAIL: ${{ github.event.commits[0].author.email }}
        GH_USERNAME: ${{ github.event.commits[0].author.username }}

    - name: Open a PR
      uses: actions/github-script@0.5.0
      with:
        github-token: ${{secrets.GITHUB_TOKEN}}
        script: |
          var fs = require('fs');
          var contents = fs.readFileSync('_fastpages_docs/_setup_pr_template.md', 'utf8');
          github.pulls.create({
                        owner: context.repo.owner,
                        repo: context.repo.repo,
                        title: 'Initial Setup',
                        head: 'fastpages-automated-setup',
                        base: 'master',
                        body: `${contents}`
                        })