name: 'Cache Julia artifacts, packages and registry'
description: 'Cache Julia using actions/cache'
author: 'Sascha Mann, Rik Huijzer, and contributors'

branding:
  icon: 'archive'
  color: 'purple'

inputs:
  cache-name:
    description: 'Name used as part of the cache keys'
    default: 'julia-cache'
  cache-artifacts:
    description: 'Whether to cache artifacts'
    default: 'true'
  cache-packages:
    description: 'Whether to cache packages'
    default: 'true'
  cache-registry:
    description: 'Whether to cache the registry'
    default: 'false'

outputs:
  cache-hit:
    description: 'A boolean value to indicate an exact match was found for the primary key. Returns \"\" when the key is new. Forwarded from actions/cache'
    value: ${{ steps.hit.outputs.cache-hit }}

runs:
  using: 'composite'
  steps:
    - id: paths
      run: |
        PATHS=""
        [ "$CACHE_ARTIFACTS" = "true" ] && PATHS="${PATHS}~/.julia/artifacts"$'\n'
        [ "$CACHE_PACKAGES" = "true" ] && PATHS="${PATHS}~/.julia/packages"$'\n'
        [ "$CACHE_REGISTRY" = "true" ] && PATHS="${PATHS}~/.julia/registry"$'\n'
        if [ "$PATHS" = "" ]; then
          echo "::error title=Invalid inputs::At least one of cache-artifacts, cache-packages or cache-registry has to be true"
          exit 1
        fi
        echo "::set-output name=cache-paths::$PATHS"
      env:
        CACHE_ARTIFACTS: ${{ inputs.cache-artifacts }}
        CACHE_PACKAGES: ${{ inputs.cache-packages }}
        CACHE_REGISTRY: ${{ inputs.cache-registry }}
      shell: bash

    - uses: actions/cache@937d24475381cd9c75ae6db12cb4e79714b926ed
      id: cache
      with:
        path: ${{ steps.paths.outputs.cache-paths }}
        key: ${{ runner.os }}-test-${{ inputs.cache-name }}-${{ hashFiles('**/Project.toml') }}
        restore-keys: |
          ${{ runner.os }}-test-${{ inputs.cache-name }}-

    - id: hit
      run: echo "::set-output name=cache-hit::$(echo $CACHE_HIT)"
      env:
        CACHE_HIT: ${{ steps.cache.outputs.cache-hit }}
      shell: bash