action.yml

name: 'Setup crane'
description: 'Install and authorize crane'
branding:
  icon: box
  color: green
inputs:
  version:
    description: 'Version of crane to install (tip, latest-release, v0.5.1, etc.)'
    required: true
    default: 'latest-release'
runs:
  using: "composite"
  steps:
  - shell: bash
    run: |
      set -ex

      # Install crane:
      # - if version is "tip", install from tip of main.
      # - if version is "latest-release", look up latest release.
      # - otherwise, install the specified version.
      case ${{ inputs.version }} in
      tip)
        echo "Installing crane using go get"
        go install github.com/google/go-containerregistry/cmd/crane@main
        ;;
      latest-release)
        tag=$(curl -s -u "username:${{ github.token }}" https://api.github.com/repos/google/go-containerregistry/releases/latest | jq -r '.tag_name')
        ;;
      *)
        tag="${{ inputs.version }}"
      esac

      os=${{ runner.os }}
      if [[ $os == "macOS" ]]; then
        os="Darwin"
      fi
      
      arch=$(uname -m)
      if [[ "$arch" =~ (aarch64|arm64) ]] ; then
        arch=arm64
      fi  

      if [[ ! -z ${tag} ]]; then
        echo "Installing crane @ ${tag} for ${os} on ${arch}"
        curl -fsL https://github.com/google/go-containerregistry/releases/download/${tag}/go-containerregistry_${os}_${arch}.tar.gz | sudo tar xzf - -C /usr/local/bin crane
      fi

      # NB: username doesn't seem to matter.
      echo "${{ github.token }}" | crane auth login ghcr.io --username "dummy" --password-stdin