mirror.yml

name: Sync any source updates
on:
  workflow_call:
permissions:
  contents: write
jobs:
  update:
    runs-on: ubuntu-latest
    steps:
    - name: Check out repo
      uses: actions/checkout@v6
      with:
        fetch-depth: 0
    - name: Set up Ruby
      uses: ruby/setup-ruby@v1
      with:
        ruby-version: 3.1.2
    - name: install deps
      run: gem install octokit faraday-retry faraday-multipart
    - name: Pull updates
      env:
        GITHUB_TOKEN: ${{ secrets.GH_TOKEN }}
        WORKFLOW_TOKEN: ${{ secrets.WORKFLOW_TOKEN }}
      run:  |
        ruby <<-EOF
          require "octokit"
          client = Octokit::Client.new
          today  = DateTime.now.strftime('%Y-%m-%d')
          repo   = %x(git config --get remote.origin.url).strip.split('/').last
          origin   = "overlookinfra/#{repo}"
          upstream = "puppetlabs/#{repo}"

          default  = client.repo(upstream).default_branch
          branches = client.branches(upstream)
                            .map{|b| b.name }
                            .select{|n| n =~ /^\d\.x/ }
                            .unshift(default)

          system('git', 'remote', 'add', 'source', "https://github.com/#{upstream}.git")
          system('git', 'config', '--global', 'user.email', 'contact@overlookinfratech.com')
          system('git', 'config', '--global', 'user.name', 'Overlook InfraTech')
          system('git', 'remote', 'set-url', 'origin', "https://#{ENV['WORKFLOW_TOKEN']}@github.com/#{origin}.git")

          puts "Origin: #{%x(git config --get remote.origin.url)}" 

          system('git', 'fetch', 'source', '--tags')
          
          branches.each do |branch|
            # There must be a better way, lol
            system('git', 'checkout', branch) || system('git', 'checkout', '-b', branch)
            
            # Save a snapshot of today in case branches are deleted in the future
            system('git', 'branch', "backup/#{today}/#{branch}")
            system('git', 'push', '-u', 'origin', "backup/#{today}/#{branch}", '--force')

            # Now integrate any updates, while deleting any workflow files so we don't accidentally run them.
            system('git', 'pull', 'source', branch, '--rebase')
            system('git', 'rm', '.github/workflows/*')
            system('git', 'commit', '-m', 'Removing workflow files')

            # force pushing allows the local commits to "float" at the top of the history
            system('git', 'push', '-u', 'origin', branch, '--force') 
          end
          
          system('git', 'push', 'origin', '--tags')
        EOF