action.yml

# repository's install.sh (POLY_INSTALL_DIR-configurable, version-arg-capable),
# so there is exactly one copy of that logic. This action adds: latest-version
# default), and PATH wiring. A version bump changes the cache key, so the
# previous version's cache is naturally not restored (invalidated).
name: "Setup poly CLI"
description: "Install poly with optional local caching"
author: "Na'aman Hirschfeld"

branding:
  icon: "check-circle"
  color: "green"

inputs:
  version:
    description: 'Release version to install (e.g. v0.1.0 or 0.1.0). Omit or pass "latest" to resolve the latest release dynamically.'
    required: false
    default: ""
  cache:
    description: "Cache the installed binaries locally with actions/cache."
    required: false
    default: "true"
  github-token:
    description: "Token used to query the GitHub API when resolving the latest release."
    required: false
    default: ${{ github.token }}

outputs:
  version:
    description: "The resolved version that was installed (without the v prefix)."
    value: ${{ steps.resolve.outputs.version }}
  install-dir:
    description: "Directory the binaries were installed into (added to PATH)."
    value: ${{ steps.resolve.outputs.install-dir }}

runs:
  using: "composite"
  steps:
    - id: resolve
      shell: bash
      env:
        GH_TOKEN: ${{ inputs.github-token }}
      run: |
        set -euo pipefail
        version="${{ inputs.version }}"
        if [ -z "$version" ] || [ "$version" = "latest" ]; then
          version="$(gh release view --repo Goldziher/poly --json tagName -q '.tagName' 2>/dev/null || true)"
          if [ -z "$version" ]; then
            echo "::error::could not resolve the latest polylint release" >&2
            exit 1
          fi
        fi
        version="${version#v}"
        install_dir="${RUNNER_TEMP}/poly-install"
        mkdir -p "$install_dir"
        {
          echo "version=$version"
          echo "install-dir=$install_dir"
          echo "cache-key=poly-v${version}-${RUNNER_OS}-${RUNNER_ARCH}"
        } >> "$GITHUB_OUTPUT"
        echo "Resolved poly $version -> $install_dir"

    - id: cache
      if: inputs.cache == 'true'
      uses: actions/cache@v4
      with:
        path: ${{ steps.resolve.outputs.install-dir }}
        key: ${{ steps.resolve.outputs.cache-key }}

    - if: steps.cache.outputs.cache-hit != 'true'
      shell: bash
      env:
        POLY_INSTALL_DIR: ${{ steps.resolve.outputs.install-dir }}
      run: |
        set -euo pipefail
        # --no-modify-path: this action wires PATH via $GITHUB_PATH below, so the
        # installer must not also edit the runner's shell profiles.
        bash "${GITHUB_ACTION_PATH}/install.sh" --no-modify-path "${{ steps.resolve.outputs.version }}"

    - shell: bash
      run: echo "${{ steps.resolve.outputs.install-dir }}" >> "$GITHUB_PATH"

    - shell: bash
      run: |
        "${{ steps.resolve.outputs.install-dir }}/poly" --version