python-docs.yml

name: Publish Python docs via GitHub Pages

# Only run on new tags starting with `py-v`
on:
  push:
    tags:
      - "py-v*"
  workflow_dispatch:

# https://stackoverflow.com/a/77412363
permissions:
  contents: write
  pages: write

jobs:
  build:
    name: Deploy Python docs
    runs-on: ubuntu-latest
    defaults:
      run:
        working-directory: python/docs/
    steps:
      - uses: actions/checkout@v4
        # We need to additionally fetch the gh-pages branch for mike deploy
        with:
          fetch-depth: 0

      - name: Install Rust
        uses: dtolnay/rust-toolchain@stable

      - uses: Swatinem/rust-cache@v2

      - name: Set up Python 3.11
        id: setup-python
        uses: actions/setup-python@v4
        with:
          python-version: "3.11"

      - name: Install and configure Poetry
        uses: snok/install-poetry@v1
        with:
          version: 1.8.2
          virtualenvs-create: true
          virtualenvs-in-project: true
          installer-parallel: true

      - name: Load cached venv
        id: cached-poetry-dependencies
        uses: actions/cache@v3
        with:
          path: .venv
          key: venv-${{ runner.os }}-${{ steps.setup-python.outputs.python-version }}-${{ hashFiles('**/poetry.lock') }}

      - name: Install dependencies
        if: steps.cached-poetry-dependencies.outputs.cache-hit != 'true'
        run: poetry install --no-interaction --no-root

      - name: Build python package
        run: |
          poetry run maturin develop -m ../core/Cargo.toml

      - name: Install root project
        run: poetry install --no-interaction

      - name: Deploy docs
        env:
          GIT_COMMITTER_NAME: CI
          GIT_COMMITTER_EMAIL: ci-bot@example.com
        run: |
          # Get most recent git tag
          # https://stackoverflow.com/a/7261049
          # https://stackoverflow.com/a/3867811
          # We don't use {{github.ref_name}} because if triggered manually, it
          # will be a branch name instead of a tag version.
          # Then remove `py-` from the tag
          VERSION=$(git describe --tags --match="py-*" --abbrev=0 | cut -c 4-)

          # Only push docs if no letters in git tag after the first character
          # (usually the git tag will have v as the first character)
          if echo $VERSION | cut -c 1- | grep -q "[A-Za-z]"; then
            poetry run mike deploy $VERSION latest --update-aliases --push --deploy-prefix python/
          fi