name: Documentation

on:
  push:
    branches:
      - main
      - documentation-*

permissions:
  contents: read
  pages: write
  id-token: write

concurrency:
  group: "pages"
  cancel-in-progress: true

jobs:
  generate:
    runs-on: ubuntu-latest
    
    steps:
    - uses: actions/checkout@v4

    - uses: ruby/setup-ruby@v1
      with:
        ruby-version: "3.4"
        bundler-cache: true
    
    - name: Generate main documentation
      timeout-minutes: 5
      run: bundle exec rdoc --op docs/main --main README.md --template-stylesheets contrib/rdoc.css

    - name: "Generate 3.1 documentation"
      timeout-minutes: 5
      run: 'gem install rack --version "< 3.2" && gem unpack rack -v "< 3.2" && cd rack-3.1* && bundle exec rdoc --op ../docs/3.1 --main README.md'

    - name: "Generate 3.0 documentation"
      timeout-minutes: 5
      run: 'gem install rack --version "< 3.1" && gem unpack rack -v "< 3.1" && cd rack-3.0* && bundle exec rdoc --op ../docs/3.0 --main README.md'

    - name: "Generate 2.2 documentation"
      timeout-minutes: 5
      run: 'gem install rack --version "< 2.3" && gem unpack rack -v "< 2.3" && cd rack-2.2* && bundle exec rdoc --op ../docs/2.2 --main README.rdoc'
    
    - name: Copy contrib
      timeout-minutes: 5
      run: cp -r contrib docs/main
    
    - name: Upload documentation artifact
      uses: actions/upload-pages-artifact@v3
      with:
        path: docs
  
  deploy:
    runs-on: ubuntu-latest
    
    environment:
      name: github-pages
      url: ${{steps.deployment.outputs.page_url}}
    
    needs: generate
    steps:
      - name: Deploy to GitHub Pages
        id: deployment
        uses: actions/deploy-pages@v4
