name: Haskell CI

on:
  # Trigger the workflow on push or pull request,
  # but only for the master branch
  push:
    branches:
      - master
  pull_request:

jobs:
  build:
    name: ghc ${{ matrix.ghc }}
    runs-on: ubuntu-latest
    strategy:
      matrix:
        ghc: ["8.8.1"]
        cabal: ["3.0"]

    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
      name: Setup Haskell
      with:
        ghc-version: ${{ matrix.ghc }}
        cabal-version: ${{ matrix.cabal }}

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

    - uses: actions/cache@v1
      name: Cache dist-newstyle
      with:
        path: dist-newstyle
        key: ${{ runner.os }}-${{ matrix.ghc }}-${{ matrix.cabal }}-semantic-dist

    - name: Install dependencies
      run: |
        cabal v2-update
        cabal v2-configure --disable-optimization --enable-benchmarks --enable-tests --write-ghc-environment-files=always -j2
        cabal v2-build all --only-dependencies

    - name: hlint
      run: |
        test -f dist-newstyle/hlint || cabal install hlint --installdir=dist-newstyle
        dist-newstyle/hlint src semantic-python

    - name: Build & test
      run: |
        cabal v2-build
        cabal v2-run semantic:test
        cabal v2-run semantic-core:test
        cabal v2-run semantic-python:test
        cd semantic-source; cabal v2-run semantic-source:test; cd ..
        cd semantic-source; cabal v2-run semantic-source:doctest -- src; cd ..