name: Build Docs
on:
  push:
    branches:
      - main
  pull_request:
    types:
      - opened
      - synchronize
jobs:
  changes:
    runs-on: ubuntu-latest
    # Required permissions
    permissions:
      pull-requests: read
    # Set job outputs to values from filter step
    outputs:
      docs: ${{ steps.filter.outputs.docs }}
    steps:
    - uses: actions/checkout@v3
    # For pull requests it's not necessary to checkout the code but for the main branch it is
    - uses: dorny/paths-filter@v2
      id: filter
      with:
        filters: |
          docs:
            - README.md
            - docs/**
            - docs_src/**
            - pyproject.toml
            - mkdocs.yml
            - mkdocs.insiders.yml

  build-docs:
    needs:
      - changes
    if: ${{ needs.changes.outputs.docs == 'true' }}
    runs-on: ubuntu-latest
    steps:
      - name: Dump GitHub context
        env:
          GITHUB_CONTEXT: ${{ toJson(github) }}
        run: echo "$GITHUB_CONTEXT"
      - uses: actions/checkout@v3
      - name: Set up Python
        uses: actions/setup-python@v4
        with:
          python-version: "3.11"
      - uses: actions/cache@v3
        id: cache
        with:
          path: ${{ env.pythonLocation }}
          key: ${{ runner.os }}-python-docs-${{ env.pythonLocation }}-${{ hashFiles('pyproject.toml') }}-v01
      - name: Install Poetry
        if: steps.cache.outputs.cache-hit != 'true'
        run: |
          python -m pip install --upgrade pip
          python -m pip install "poetry"
          python -m poetry self add poetry-version-plugin
      - name: Configure poetry
        run: python -m poetry config virtualenvs.create false
      - name: Install Dependencies
        if: steps.cache.outputs.cache-hit != 'true'
        run: python -m poetry install
      - name: Install Material for MkDocs Insiders
        if: ( github.event_name != 'pull_request' || github.event.pull_request.head.repo.fork == false ) && steps.cache.outputs.cache-hit != 'true'
        run: python -m poetry run pip install git+https://${{ secrets.SQLMODEL_MKDOCS_MATERIAL_INSIDERS }}@github.com/squidfunk/mkdocs-material-insiders.git
      - uses: actions/cache@v3
        with:
          key: mkdocs-cards-${{ github.ref }}
          path: .cache
      - name: Build Docs
        if: github.event_name == 'pull_request' && github.event.pull_request.head.repo.fork == true
        run: python -m poetry run mkdocs build
      - name: Build Docs with Insiders
        if: github.event_name != 'pull_request' || github.event.pull_request.head.repo.fork == false
        run: python -m poetry run mkdocs build --config-file mkdocs.insiders.yml
      - uses: actions/upload-artifact@v3
        with:
          name: docs-site
          path: ./site/**

  # https://github.com/marketplace/actions/alls-green#why
  docs-all-green:  # This job does nothing and is only used for the branch protection
    if: always()
    needs:
      - build-docs
    runs-on: ubuntu-latest
    steps:
      - name: Decide whether the needed jobs succeeded or failed
        uses: re-actors/alls-green@release/v1
        with:
          jobs: ${{ toJSON(needs) }}
          allowed-skips: build-docs