code-style.yml

name: Code Style

on:
  push:

jobs:
  hlint:
    runs-on: ubuntu-20.04
    
    env:
      HLINT_VERSION: '3.5'

    steps:
# (1) -> Init
    - name: Checkout git repository
      uses: actions/checkout@v4
    
    - name: Prepare ~/.local/bin
      run: |
        mkdir -p ~/.local/bin
        export PATH=~/.local/bin:$PATH

# (2) -> Setup cache
    - name: Cache ~/.local/bin
      id: cache-local-bin
      uses: actions/cache@v3
      with:
        path: ~/.local/bin
        key: local-bin-${{ env.HLINT_VERSION }}

# (3) -> Prepare and install dependencies     
    - name: Setup hlint
      if: steps.cache-local-bin.outputs.cache-hit != 'true'
      run: |
        curl -L $HLINT_URL | tar xz --wildcards --strip-components=1 -C ~/.local/bin '*/hlint'
      env:
        HLINT_URL: https://github.com/ndmitchell/hlint/releases/download/v${{ env.HLINT_VERSION }}/hlint-${{ env.HLINT_VERSION }}-x86_64-linux.tar.gz
        
# (4) -> Run hlint
    - name: Run hlint
      run: |
        hlint shared-common
        hlint registry-public
        hlint registry-server
        hlint wizard-common
        hlint wizard-public
        hlint wizard-server

  fourmolu:
    runs-on: ubuntu-20.04

    env:
      FOURMOLU_VERSION: '0.8.2.0'
      HPACK_VERSION: '0.34.2'

    steps:
# (1) -> Init
    - name: Checkout git repository
      uses: actions/checkout@v4

    - name: Prepare ~/.local/bin
      run: |
        mkdir -p ~/.local/bin
        export PATH=~/.local/bin:$PATH

# (2) -> Setup cache
    - name: Cache ~/.local/bin
      id: cache-local-bin
      uses: actions/cache@v3
      with:
        path: ~/.local/bin
        key: local-bin-${{ env.FOURMOLU_VERSION }}-${{ env.HPACK_VERSION }}

# (3) -> Prepare and install dependencies
    - name: Setup hpack && fourmolu
      if: steps.cache-local-bin.outputs.cache-hit != 'true'
      run: |
        curl -L $HPACK_URL --output hpack.gz 
        gzip -d hpack.gz
        chmod +x hpack
        cp ./hpack ~/.local/bin/hpack
        
        curl -L $FOURMOLU_URL --output fourmolu
        chmod +x fourmolu
        cp ./fourmolu ~/.local/bin/fourmolu
      env:
        HPACK_URL: https://github.com/sol/hpack/releases/download/${{ env.HPACK_VERSION}}/hpack_linux.gz
        FOURMOLU_URL: https://github.com/fourmolu/fourmolu/releases/download/v${{ env.FOURMOLU_VERSION }}/fourmolu-${{ env.FOURMOLU_VERSION }}-linux-x86_64

# (4) -> Generate cabal files
    - name: Generate cabal files
      run: |
        cd shared-common
        hpack --force
        cd ..

        cd registry-public
        hpack --force
        cd ..

        cd registry-server
        hpack --force
        cd ..

        cd wizard-common
        hpack --force
        cd ..

        cd wizard-public
        hpack --force
        cd ..

        cd wizard-server
        hpack --force
        cd ..

# (5) -> Run fourmolu
    - name: Run fourmolu
      run: |
        FILES=$(find \
          shared-common/src \
          registry-public/src \
          registry-server/src registry-server/test \
          wizard-common/src wizard-common/test \
          wizard-public/src \
          wizard-server/src wizard-server/test \
          -name '*.hs'
        )
        RET=0
        for FILE in $FILES; do
          if ! fourmolu --mode check $FILE; then
            echo "Unformatted file: " . $FILE
            RET=1
          fi
        done
        exit $RET