# Builds the website sourced from docs/website/ using `mkdocs` and pushes
# to the gh-pages branch for publishing on GitHub Pages.
#
# See https://squidfunk.github.io/mkdocs-material/publishing-your-site/

name: Publish Website

on:
  workflow_dispatch:
  push:
    branches:
      - main
    paths:
      # This file itself.
      - ".github/workflows/publish_website.yml"
      # Directly authored website source files.
      - "docs/website/**"
      # Python/pip release index page.
      - "build_tools/scripts/generate_release_index.py"
      # MLIR dialect definitions and .md generation using iree-tblgen.
      #   Technically this should also include the sources for Tablegen, but
      #   that rarely changes and we want to run this workflow conservatively.
      - "**.td"
      - "build_tools/cmake/iree_tablegen_doc.cmake"
  # Regenerate the release pip index when a release is created or deleted.
  release:
    types: [published, unpublished]

jobs:
  publish_website:
    # Note: a clean build of `iree-tblgen` takes ~5 minutes on standard runners.
    runs-on: ubuntu-20.04
    env:
      CC: clang
      CXX: clang++
    steps:
      - name: Checkout out repository
        uses: actions/checkout@692973e3d937129bcbf40652eb9f2f61becf3332 # v4.1.7
        with:
          submodules: true
          token: ${{ secrets.WRITE_ACCESS_TOKEN }}
      - name: Fetching base gh-pages branch
        # We have to explicitly fetch the gh-pages branch as well to preserve history
        run: git fetch --no-tags --prune --depth=1 origin "gh-pages:gh-pages"
      - name: Setting up Python
        uses: actions/setup-python@f677139bbe7f9c59b41e40162b753c062f5d49a3 # v5.1.0
        with:
          python-version: 3.x
          cache: "pip"
      - name: Installing dependencies
        run: |
          pip install -r docs/website/requirements.txt
          pip install requests
          sudo apt update
          sudo apt install -y ninja-build
      - name: Generating release index
        run: |
          ./build_tools/scripts/generate_release_index.py \
            --repo="${GITHUB_REPOSITORY}" \
            --output=docs/website/docs/pip-release-links.html
      - name: ccache
        uses: hendrikmuhs/ccache-action@ed74d11c0b343532753ecead8a951bb09bb34bc9 # v1.2.14
        with:
          key: ${{ github.job }}
      - name: Building documentation files
        run: ./docs/website/generate_extra_files.sh
      - name: Setting git config
        run: |
          git config --local user.email "iree-github-actions-bot@google.com"
          git config --local user.name "Website Publish Action"
      - name: Deploying to gh-pages
        working-directory: docs/website
        run: mkdocs gh-deploy