action.yml

name: 'Setup dpm'
description: 'Install the Digital Asset Package Manager (dpm) CLI for DAML development'
author: '0xsend'

branding:
  icon: 'package'
  color: 'blue'

inputs:
  version:
    description: 'Version of dpm to install (e.g., "3.4.9" or "latest")'
    required: false
    default: 'latest'
  daml-version:
    description: 'Version of DAML SDK to install (e.g., "3.4.9"). Leave empty to skip DAML SDK installation.'
    required: false
    default: ''

outputs:
  version:
    description: 'The version of dpm that was installed'
    value: ${{ steps.install.outputs.version }}
  path:
    description: 'Path to the dpm installation directory'
    value: ${{ steps.install.outputs.path }}
  daml-version:
    description: 'The version of DAML SDK that was installed (empty if not installed)'
    value: ${{ steps.install-daml.outputs.version }}

runs:
  using: 'composite'
  steps:
    - name: Determine version
      id: version
      shell: bash
      run: |
        if [[ "${{ inputs.version }}" == "latest" ]]; then
          VERSION=$(curl -sS "https://get.digitalasset.com/install/latest")
        else
          VERSION="${{ inputs.version }}"
        fi
        echo "version=${VERSION}" >> $GITHUB_OUTPUT
        echo "Installing dpm version: ${VERSION}"

    - name: Determine platform
      id: platform
      shell: bash
      run: |
        OS=$(uname -s | tr '[:upper:]' '[:lower:]')
        ARCH=$(uname -m)

        # Map architecture names
        case "${ARCH}" in
          x86_64)  ARCH="amd64" ;;
          aarch64) ARCH="arm64" ;;
          arm64)   ARCH="arm64" ;;
          *)
            echo "Unsupported architecture: ${ARCH}"
            exit 1
            ;;
        esac

        # Map OS names
        case "${OS}" in
          linux)  OS="linux" ;;
          darwin) OS="darwin" ;;
          *)
            echo "Unsupported OS: ${OS}"
            exit 1
            ;;
        esac

        echo "os=${OS}" >> $GITHUB_OUTPUT
        echo "arch=${ARCH}" >> $GITHUB_OUTPUT
        echo "platform=${OS}-${ARCH}" >> $GITHUB_OUTPUT
        echo "Detected platform: ${OS}-${ARCH}"

    - name: Cache dpm
      id: cache
      uses: actions/cache@v4
      with:
        path: ${{ runner.tool_cache }}/dpm/${{ steps.version.outputs.version }}
        key: dpm-${{ steps.platform.outputs.platform }}-${{ steps.version.outputs.version }}

    - name: Download and install dpm
      id: install
      shell: bash
      env:
        VERSION: ${{ steps.version.outputs.version }}
        PLATFORM: ${{ steps.platform.outputs.platform }}
        CACHE_HIT: ${{ steps.cache.outputs.cache-hit }}
      run: |
        INSTALL_DIR="${RUNNER_TOOL_CACHE}/dpm/${VERSION}"

        if [[ "${CACHE_HIT}" == "true" ]]; then
          echo "Using cached dpm installation"
        else
          echo "Downloading dpm ${VERSION} for ${PLATFORM}..."

          TARBALL="dpm-${VERSION}-${PLATFORM}.tar.gz"
          URL="https://artifactregistry.googleapis.com/download/v1/projects/da-images/locations/europe/repositories/public-generic/files/dpm-sdk:${VERSION}:${TARBALL}:download?alt=media"

          mkdir -p "${INSTALL_DIR}"

          curl -SLf "${URL}" -o "/tmp/${TARBALL}" --progress-bar

          tar xzf "/tmp/${TARBALL}" -C "${INSTALL_DIR}" --strip-components=1

          rm -f "/tmp/${TARBALL}"

          chmod +x "${INSTALL_DIR}/bin/"*

          echo "dpm installed to ${INSTALL_DIR}"
        fi

        # Add to PATH
        echo "${INSTALL_DIR}/bin" >> $GITHUB_PATH

        # Set outputs
        echo "version=${VERSION}" >> $GITHUB_OUTPUT
        echo "path=${INSTALL_DIR}" >> $GITHUB_OUTPUT

    - name: Verify installation
      shell: bash
      run: |
        echo "Verifying dpm installation..."
        dpm version
        echo "dpm is ready to use"

    # DAML SDK installation (optional) - uses dpm install
    - name: Install DAML SDK
      id: install-daml
      if: inputs.daml-version != ''
      shell: bash
      env:
        DAML_VERSION: ${{ inputs.daml-version }}
      run: |
        echo "Installing DAML SDK ${DAML_VERSION} via dpm..."
        dpm install "${DAML_VERSION}"
        echo "version=${DAML_VERSION}" >> $GITHUB_OUTPUT

    - name: Verify DAML SDK installation
      if: inputs.daml-version != ''
      shell: bash
      run: |
        echo "Verifying DAML SDK installation..."
        dpm version
        echo "DAML SDK is ready to use"