name: Publish documentation site

on:
  push:
    branches:
      - main
  workflow_dispatch:

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

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

jobs:
  build:
    runs-on: ubuntu-latest

    steps:
      - name: Checkout repository
        uses: actions/checkout@v4

      - name: Install tooling
        run: |
          sudo apt-get update
          sudo apt-get install -y graphviz jq python3 python3-pip

          if ! docker compose version >/dev/null 2>&1; then
            sudo apt-get install -y docker-compose-v2 || sudo apt-get install -y docker-compose || true
          fi

          if ! docker compose version >/dev/null 2>&1; then
            echo "docker compose CLI is unavailable on this runner" >&2
            exit 1
          fi

          python3 -m pip install --user mkdocs pyyaml jinja2

      - name: Generate documentation
        run: |
          chmod +x scripts/docs/*.sh
          scripts/docs/generate-all.sh

      - name: Build MkDocs site
        run: |
          python3 -m mkdocs build --strict

      - name: Configure GitHub Pages
        uses: actions/configure-pages@v5

      - name: Upload GitHub Pages artifact
        uses: actions/upload-pages-artifact@v3
        with:
          path: site

  deploy:
    runs-on: ubuntu-latest
    needs: build

    environment:
      name: github-pages
      url: ${{ steps.deployment.outputs.page_url }}

    steps:
      - name: Deploy to GitHub Pages
        id: deployment
        uses: actions/deploy-pages@v4