name: Install nim
description: Install the given nim version

inputs:
  nimVersion:
    description: A nim version string like 2.2.2 or 2.0.8
    required: true
  os:
    description: An OS string like "linux" or "windows"
    required: true

runs:
  using: "composite"
  steps:
    - name: Set environment variables
      run: |
        set -x
        echo "nimPath=nim-${{ inputs.nimVersion }}-${{ inputs.os }}_x64.tar.xz"  >> $GITHUB_ENV
        echo $GITHUB_ENV

    - name: Set environment variables 2
      run: |
        set -x
        echo "nimUrl=https://nim-lang.org/download/${{ env.nimPath }}" >> $GITHUB_ENV
        echo $GITHUB_ENV


    - name: cache restore
      id: cachestep1
      uses: actions/cache@v4
      with:
        path: ${{ env.nimPath }}
        key: ${{ env.nimPath }}

    - name: cache hit
      run: |
        set -x
        if [ ! ${{ steps.cachestep1.outputs.cache-hit }} ]; then 
          echo "Download nim tarball"
          wget ${{ env.nimUrl }}
        fi

    - name: cache save
      uses: actions/cache@v4
      with:
        path: ${{ env.nimPath }}
        key: ${{ env.nimPath }}

    - run: mv ${{ env.nimPath }} /opt/${{ env.nimPath }}
    - run: cd /opt ; tar xvf ${{ env.nimPath }}
    - run: cd /opt ; ln -s `pwd`/nim-${{ inputs.nimVersion }}/bin/* /usr/bin/
    - run: gcc --version
    - run: nim --version
    - run: nimble --version