name: Build and Deploy Documentation

on:
  push:
    branches: [main]
  pull_request:
    branches: [main]

# Sets permissions of the GITHUB_TOKEN to allow deployment to GitHub Pages
permissions:
  contents: read
  pages: write
  id-token: write

# Allow only one concurrent deployment, skipping runs queued between the run in-progress and latest queued.
# However, do NOT cancel in-progress runs as we want to allow these production deployments to complete.
concurrency:
  group: "pages"
  cancel-in-progress: false

jobs:
  # Build documentation
  build:
    runs-on: ubuntu-latest
    steps:
      - name: Checkout
        uses: actions/checkout@v4

      - name: Set up Python
        uses: actions/setup-python@v5
        with:
          python-version: "3.10"

      - name: Install dependencies
        run: |
          python -m pip install --upgrade pip
          # Install package in development mode to get version info
          pip install -e .
          # Install documentation dependencies
          pip install -r docs/requirements.txt

      - name: Setup Pages
        id: pages
        uses: actions/configure-pages@v4
        if: github.ref == 'refs/heads/main'

      - name: Build Sphinx documentation
        run: |
          cd docs
          make html

      - name: Upload artifact
        uses: actions/upload-pages-artifact@v3
        if: github.ref == 'refs/heads/main'
        with:
          path: docs/_build/html

  # Deploy to GitHub Pages (only on main branch)
  deploy:
    if: github.ref == 'refs/heads/main'
    environment:
      name: github-pages
      url: ${{ steps.deployment.outputs.page_url }}
    runs-on: ubuntu-latest
    needs: build
    steps:
      - name: Deploy to GitHub Pages
        id: deployment
        uses: actions/deploy-pages@v4