upgrade.yaml

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

permissions:
  actions: write
  pull-requests: write
  contents: write
  deployments: write
  pages: write
  statuses: write

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==5.4.1

      - 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'
            })