name: Hugo Build
description: >-
  Installs Go + Hugo (extended) and builds a Hugo site. Set mode=preview to
  include drafts and future-dated posts (development env); mode=production
  for release builds.

inputs:
  working-directory:
    description: Directory containing the Hugo site (with hugo.toml)
    required: false
    default: '.'
  mode:
    description: >-
      'preview' (HUGO_ENVIRONMENT=development, --buildDrafts --buildFuture) or
      'production' (HUGO_ENVIRONMENT=production, no drafts/future)
    required: false
    default: preview
  base-url:
    description: >-
      Hugo --baseURL. Typically '/' for CF Pages previews (root-relative
      paths); pass the canonical URL for production.
    required: false
    default: '/'
  hugo-version:
    description: Hugo extended version to install
    required: false
    default: '0.148.0'
  go-version:
    description: Go version for Hugo modules
    required: false
    default: '1.24'

outputs:
  public-dir:
    description: Path to the built static site (working-directory + /public)
    value: ${{ inputs.working-directory }}/public

runs:
  using: composite
  steps:
    - name: Setup Go
      uses: actions/setup-go@v6
      with:
        go-version: ${{ inputs.go-version }}

    - name: Install Hugo
      shell: bash
      env:
        HUGO_VERSION: ${{ inputs.hugo-version }}
      run: |
        wget -O "${RUNNER_TEMP}/hugo.deb" \
          "https://github.com/gohugoio/hugo/releases/download/v${HUGO_VERSION}/hugo_extended_${HUGO_VERSION}_linux-amd64.deb"
        sudo dpkg -i "${RUNNER_TEMP}/hugo.deb"

    - name: Build
      shell: bash
      env:
        HUGO_CACHEDIR: ${{ runner.temp }}/hugo_cache
        HUGO_ENVIRONMENT: ${{ inputs.mode == 'production' && 'production' || 'development' }}
        BASE_URL: ${{ inputs.base-url }}
        WORKDIR: ${{ inputs.working-directory }}
        MODE: ${{ inputs.mode }}
      run: |
        set -euo pipefail
        cd "${WORKDIR}"
        args=(--gc --minify --baseURL "${BASE_URL}")
        if [ "${MODE}" = "preview" ]; then
          args+=(--buildDrafts --buildFuture)
        fi
        hugo "${args[@]}"