name: docs

on:
  push:
    branches: [main]
  pull_request:

jobs:
  docs:
    name: docs
    runs-on: ubuntu-latest

    steps:
      - name: Checkout repository
        uses: actions/checkout@v2

      - name: Load cache
        uses: actions/cache@v2
        with:
          path: |
            ~/.cargo/bin/
            ~/.cargo/registry/index/
            ~/.cargo/registry/cache/
            ~/.cargo/git/db
            target/
          key: ${{ runner.os }}-cargo-${{ hashFiles('**/Cargo.lock') }}

      - name: Install stable toolchain
        uses: actions-rs/toolchain@v1
        with:
          profile: minimal
          toolchain: nightly
          override: true

      - name: Build docs
        uses: actions-rs/cargo@v1
        env:
          RUSTDOCFLAGS: "--enable-index-page -Zunstable-options --cfg docsrs"
        with:
          command: doc
          args: --no-deps --workspace --features docsrs -Zrustdoc-map

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