name: GitHub Pages

on:
  push:
    tags: ["v*.*.*"]
  workflow_dispatch:

jobs:
  deploy:
    runs-on: ubuntu-22.04
    permissions:
      contents: write
    concurrency:
      group: ${{ github.workflow }}-${{ github.ref }}
    steps:
      - uses: actions/checkout@v3
        with:
          fetch-depth: 0

      - name: Setup Python
        uses: actions/setup-python@v3
        with:
          python-version: "3.9"

      - name: Upgrade pip
        run: |
          # install pip=>20.1 to use "pip cache dir"
          python3 -m pip install --upgrade pip

      - name: Get pip cache dir
        id: pip-cache
        run: echo "::set-output name=dir::$(pip cache dir)"

      - name: Cache dependencies
        uses: actions/cache@v2
        with:
          path: ${{ steps.pip-cache.outputs.dir }}
          key: ${{ runner.os }}-pip-${{ hashFiles('**/requirements-docs.txt') }}
          restore-keys: |
            ${{ runner.os }}-pip-

      - name: Install dependencies
        run: python3 -m pip install -r ./requirements-docs.txt

      - run: mkdocs build

      - name: Deploy
        uses: peaceiris/actions-gh-pages@v3
        if: ${{ github.ref == 'refs/heads/main' }}
        with:
          github_token: ${{ secrets.GITHUB_TOKEN }}
          publish_dir: ./site