haddock.yml

name: Haddock

on:
  push:
    branches: [master]
    paths:
      - '**.cabal'
      - '**.hs'

jobs:
  haddock:
    name: haddock / ${{ matrix.ghc }}
    runs-on: ubuntu-latest
    strategy:
      matrix:
        cabal: ["3.2"]
        ghc: ["8.10.1"]
    steps:
    - uses: actions/checkout@v2
      if: github.event.action == 'opened' || github.event.action == 'synchronize' || github.event.ref == 'refs/heads/master'

    - uses: actions/setup-haskell@v1.1
      id: setup-haskell-cabal
      name: Setup Haskell
      with:
        ghc-version: ${{ matrix.ghc }}
        cabal-version: ${{ matrix.cabal }}

    - uses: actions/cache@v1
      name: Cache cabal-store
      with:
        path: ${{ steps.setup-haskell-cabal.outputs.cabal-store }}
        key: ${{ runner.os }}-${{ matrix.ghc }}-cabal

    - name: Build
      run: |
        cabal update
        mkdir -p docs
        find docs -mindepth 1 -delete
        haddock_index=$(cabal v2-haddock --enable-documentation --haddock-hyperlink-source --haddock-quickjump --haddock-html-location='https://hackage.haskell.org/package/$pkg-$version/docs' | tail -1)
        haddock_dir=$(dirname $haddock_index)
        cp -R $haddock_dir/* docs

    - name: Commit
      run: |
        cd docs
        git add .
        git config --local user.email "action@github.com"
        git config --local user.name "GitHub Action"
        git commit -m "CI: Update documentation" | exit 0
    
    - name: Push
      uses: ad-m/github-push-action@master
      with:
        github_token: ${{ secrets.GITHUB_TOKEN }}