name: Docs

on:
  push:
    branches:
      - main

jobs:
  mdbook-deploy:
    runs-on: ubuntu-latest

    steps:
      - uses: actions/checkout@v1

      - name: Setup mdBook
        uses: peaceiris/actions-mdbook@v1
        with:
          # if this changes, change it in cli/Cargo.toml and .github/workflows/publish-docs.yml as well
          mdbook-version: '0.4.10'

      - name: Cache cargo registry
        uses: actions/cache@v1
        with:
          path: ~/.cargo/registry
          key: ${{ runner.os }}-cargo-registry-${{ hashFiles('**/Cargo.lock') }}

      - name: Cache cargo build
        uses: actions/cache@v1
        with:
          path: target
          key: ${{ runner.os }}-cargo-build-target-${{ hashFiles('**/Cargo.lock') }}

      - uses: actions-rs/toolchain@v1
        with:
          toolchain: stable
          override: true

      - name: Create usage-docs plugin
        run: cargo build -p taskchampion-cli --features usage-docs --bin usage-docs

      - run: mdbook build docs

      - name: Deploy
        uses: peaceiris/actions-gh-pages@v3
        with:
          github_token: ${{ secrets.GITHUB_TOKEN }}
          publish_dir: ./docs/book