config.rb

# Activate and configure extensions
# https://middlemanapp.com/advanced/configuration/#configuring-extensions
#
activate :relative_assets
activate :livereload

config[:images_dir] = "images"
class ImportedAssetPathProcessor
  attr_reader :app
  def initialize(app)
    @app = app
  end
  def call(sprockets_asset)
    directory = case sprockets_asset.logical_path
                when /^images\// then app.config[:images_dir]
                else
                  "imported"
                end
    relative_path = sprockets_asset.logical_path.sub(/^#{directory}/, '')
    File.join(directory, relative_path)
  end
end

activate :sprockets do |config|
  config.imported_asset_path = ImportedAssetPathProcessor.new(app)
end

activate :autoprefixer do |prefix|
  prefix.browsers = "last 2 versions"
end

# Layouts
# https://middlemanapp.com/basics/layouts/

# Per-page layout changes
page '/*.xml', layout: false
page '/*.json', layout: false
page '/*.txt', layout: false

# With alternative layout
# page '/path/to/file.html', layout: 'other_layout'

# Proxy pages
# https://middlemanapp.com/advanced/dynamic-pages/

# proxy(
#   '/this-page-has-no-template.html',
#   '/template-file.html',
#   locals: {
#     which_fake_page: 'Rendering a fake page with a local variable'
#   },
# )

# Helpers
# Methods defined in the helpers block are available in templates
# https://middlemanapp.com/basics/helper-methods/

# helpers do
#   def some_helper
#     'Helping'
#   end
# end

# Build-specific configuration
# https://middlemanapp.com/advanced/configuration/#environment-specific-settings
#

configure :build do
  activate :minify_css
  activate :minify_javascript
end