upgrade.yaml

name: Upgrade fastpages
on: 
  issues:
    types: [opened]

jobs:
  check_credentials:
    if: |
      (github.repository != 'fastai/fastpages') &&
      (github.event.issue.title == '[fastpages] Automated Upgrade')   
    runs-on: ubuntu-latest
    steps:

    - name: see payload
      run: |
        echo "FULL PAYLOAD:\n${PAYLOAD}\n"
        echo "PR_PAYLOAD PAYLOAD:\n${PR_PAYLOAD}"
      env:
        PAYLOAD: ${{ toJSON(github.event) }}
        PR_PAYLOAD: ${{ github.event.pull_request }}

    - name: Comment on issue if sufficient access does not exist
      if: |
        (github.event.issue.author_association != 'OWNER') && 
        (github.event.issue.author_association != 'COLLABORATOR') &&
        (github.event.issue.author_association != 'MEMBER')
      uses: actions/github-script@0.6.0
      with:
        github-token: ${{secrets.GITHUB_TOKEN}}
        script: |
          var permission_level = process.env.permission_level;
          var url = 'https://help.github.com/en/github/setting-up-and-managing-your-github-user-account/permission-levels-for-a-user-account-repository#collaborator-access-on-a-repository-owned-by-a-user-account'
          var msg = `You must have the [permission level](${url}) of either an **OWNER**, **COLLABORATOR** or **MEMBER** to instantiate an upgrade request.  Your permission level is ${permission_level}`
          github.issues.createComment({
            issue_number: context.issue.number,
            owner: context.repo.owner,
            repo: context.repo.repo,
            body: msg
          })
          github.issues.update({
            issue_number: context.issue.number,
            owner: context.repo.owner,
            repo: context.repo.repo,
            state: 'closed'
          })
          throw msg;
      env:
        permission_level: ${{ github.event.issue.author_association }}
          
  upgrade:
    needs: [check_credentials]
    if: |
      (github.repository != 'fastai/fastpages') &&
      (github.event.issue.title == '[fastpages] Automated Upgrade') &&
      (github.event.issue.author_association == 'OWNER' || github.event.issue.author_association == 'COLLABORATOR' || github.event.issue.author_association == 'MEMBER')
    runs-on: ubuntu-latest
    steps:
    
    - name: Set up Python
      uses: actions/setup-python@v1
      with:
        python-version: 3.7
    
    - name: checkout latest fastpages
      uses: actions/checkout@v2
      with:
        repository: 'fastai/fastpages'
        path: 'new_files'
        persist-credentials: false
        
    - name: copy this repo's contents
      uses: actions/checkout@v2
      with:
        path: 'current_files'
        persist-credentials: false

    - name: compare versions
      id: check_version
      run: |
        from pathlib import Path
        new_version = Path('new_files/_fastpages_docs/version.txt')
        old_version = Path('current_files/_fastpages_docs/version.txt')

        if old_version.exists():
          old_num = old_version.read_text().strip()
          new_num = new_version.read_text().strip()
          print(f'Old version: {old_num}')
          print(f'New version: {new_num}')
          if old_num == new_num:
            print('::set-output name=vbump::false')
          else:
            print('::set-output name=vbump::true')
        else:
          print('::set-output name=vbump::true')
      shell: python

    - name: copy new files
      if: steps.check_version.outputs.vbump == 'true'
      run: |
        # remove files you don't want to copy from current version of fastpages
        cd new_files        
        rm -rf _posts _notebooks _word images
        rm *.md CNAME action.yml _config.yml index.html LICENSE
        rm _pages/*.md
        rm .github/workflows/chatops.yaml
        rm .github/workflows/docker.yaml
        rm .github/ISSUE_TEMPLATE/bug.md .github/ISSUE_TEMPLATE/feature_request.md
        
        # copy new files from fastpages into your repo
        for file in $(ls | egrep -v "(assets|_sass)"); do 
          if [[ -f "$file" ]] || [[ -d "$file" ]] 
          then
            echo "copying $file"; 
            cp -r $file ../current_files;
          fi
        done

        # copy custom-variables.scss if doesn't exist
        if [ ! -f "../current_files/_sass/minima/custom-variables.scss" ]; then
          cp _sass/minima/custom-variables.scss ../current_files/_sass/minima/
        fi

        # copy select files in assets and _sass
        cp -r assets/js ../current_files/assets
        cp -r assets/badges ../current_files/assets
        cp _sass/minima/fastpages-styles.scss ../current_files/_sass/minima/
        cp _sass/minima/fastpages-dracula-highlight.scss ../current_files/_sass/minima/
        
        # copy action workflows
        cp -r .github ../current_files
        
        # install dependencies
        pip3 install pyyaml

    - name: sync baseurl
      if: steps.check_version.outputs.vbump == 'true'
      run: |
        import re, os, yaml
        from pathlib import Path
        from configparser import ConfigParser
        settings = ConfigParser()
        
        # specify location of config files
        nwo = os.getenv('GITHUB_REPOSITORY')
        username, repo_name = nwo.split('/')
        settings_path = Path('current_files/_action_files/settings.ini')
        config_path = Path('current_files/_config.yml')
        setup_pr_path = Path('current_files/_fastpages_docs/_setup_pr_template.md')
        upgrade_pr_path = Path('current_files/_fastpages_docs/_upgrade_pr.md')
        
        assert settings_path.exists(), 'Did not find _action_files/settings.ini in your repository!'
        assert config_path.exists(), 'Did not find _config.yml in your repository!'
        assert setup_pr_path.exists(), 'Did not find_fastpages_docs/_setup_pr_template.md in the current directory!'
        assert upgrade_pr_path.exists(), 'Did not find _fastpages_docs/_upgrade_pr.md in your repository!'
        
        # read data from config files
        settings.read(settings_path)
        with open(config_path, 'r') as cfg:
          config = yaml.load(cfg)
        
        # sync value for baseurl b/w config.yml and settings.ini
        settings['DEFAULT']['baseurl'] = config['baseurl']
        with open(settings_path, 'w') as stg:
          settings.write(stg)
          
        # update PR templates
        setup_pr = setup_pr_path.read_text().replace('{_username_}', username).replace('{_repo_name_}', repo_name)
        setup_pr_path.write_text(setup_pr)
        upgrade_pr = upgrade_pr_path.read_text().replace('{_username_}', username).replace('{_repo_name_}', repo_name)
        upgrade_pr_path.write_text(upgrade_pr)
      shell: python

    - uses: webfactory/ssh-agent@v0.4.1
      if: steps.check_version.outputs.vbump == 'true'
      with:
          ssh-private-key: ${{ secrets.SSH_DEPLOY_KEY }}
                        
    - name: push changes to branch
      if: steps.check_version.outputs.vbump == 'true'
      run: |
        # commit changes
        cd current_files
        git config --global user.email "${GH_USERNAME}@users.noreply.github.com"
        git config --global user.name "${GH_USERNAME}"
        git remote remove origin
        git remote add origin "git@github.com:${GITHUB_REPOSITORY}.git"
        
        git add _action_files/settings.ini
        git checkout -b fastpages-automated-upgrade
        git add -A
        git commit -m'upgrade fastpages'
        git push -f --set-upstream origin fastpages-automated-upgrade master
      env: 
        GH_USERNAME: ${{ github.event.issue.user.login }}

    - name: Open a PR
      if: steps.check_version.outputs.vbump == 'true'
      id: pr
      uses: actions/github-script@0.6.0
      with:
        github-token: ${{secrets.GITHUB_TOKEN}}
        script: |
          var fs = require('fs');
          var contents = fs.readFileSync('current_files/_fastpages_docs/_upgrade_pr.md', 'utf8');
          github.pulls.create({
                        owner: context.repo.owner,
                        repo: context.repo.repo,
                        title: '[fastpages] Update repo with changes from fastpages',
                        head: 'fastpages-automated-upgrade',
                        base: 'master',
                        body: `${contents}`
                        })
                      .then(result => console.log(`::set-output name=pr_num::${result.data.number}`))
  
    - name: Comment on issue if failure
      if: failure()  && (steps.check_version.outputs.vbump == 'true')
      uses: actions/github-script@0.6.0
      with:
        github-token: ${{secrets.GITHUB_TOKEN}}
        script: |
          var pr_num = process.env.PR_NUM;
          var repo = process.env.REPO
          github.issues.createComment({
            issue_number: context.issue.number,
            owner: context.repo.owner,
            repo: context.repo.repo,
            body: `An error occurred when attempting to open a PR to update fastpages. See the [Actions tab of your repo](https://github.com/${repo}/actions) for more details.`
          })
      env:
        PR_NUM: ${{ steps.pr.outputs.pr_num }}
        REPO: ${{ github.repository }}

    - name: Comment on issue 
      if: steps.check_version.outputs.vbump == 'true'    
      uses: actions/github-script@0.6.0
      with:
        github-token: ${{secrets.GITHUB_TOKEN}}
        script: |
          var pr_num = process.env.PR_NUM;
          var repo = process.env.REPO
          github.issues.createComment({
            issue_number: context.issue.number,
            owner: context.repo.owner,
            repo: context.repo.repo,
            body: `Opened PR https://github.com/${repo}/pull/${pr_num} to assist with updating fastpages.`
          })
      env:
        PR_NUM: ${{ steps.pr.outputs.pr_num }}
        REPO: ${{ github.repository }}

    - name: Comment on issue if version has not changed
      if: steps.check_version.outputs.vbump == 'false'    
      uses: actions/github-script@0.6.0
      with:
        github-token: ${{secrets.GITHUB_TOKEN}}
        script: |
          github.issues.createComment({
            issue_number: context.issue.number,
            owner: context.repo.owner,
            repo: context.repo.repo,
            body: `Your version of fastpages is up to date.  There is nothing to change.`
          })
          
    - name: Close Issue
      if: always()
      uses: actions/github-script@0.6.0
      with:
        github-token: ${{secrets.GITHUB_TOKEN}}
        script: |
          github.issues.update({
            issue_number: context.issue.number,
            owner: context.repo.owner,
            repo: context.repo.repo,
            state: 'closed'
          })