class InlineSvg::Configuration

def add_custom_transformation(options)
  if incompatible_transformation?(options.fetch(:transform))
    raise InlineSvg::Configuration::Invalid.new("#{options.fetch(:transform)} should implement the .create_with_value and #transform methods")
  end
  @custom_transformations.merge!(Hash[ *[options.fetch(:attribute, :no_attribute), options] ])
end

def asset_file=(custom_asset_file)
  begin
    method = custom_asset_file.method(:named)
    if method.arity == 1
      @asset_file = custom_asset_file
    else
      raise InlineSvg::Configuration::Invalid.new("asset_file should implement the #named method with arity 1")
    end
  rescue NameError
    raise InlineSvg::Configuration::Invalid.new("asset_file should implement the #named method")
  end
end

def asset_finder=(finder)
  @asset_finder = if finder.respond_to?(:find_asset)
                    finder
                  elsif finder.class.name == "Propshaft::Assembly"
                    InlineSvg::PropshaftAssetFinder
                  else
                    # fallback to a naive static asset finder
                    # (sprokects >= 3.0 && config.assets.precompile = false
                    # See: https://github.com/jamesmartin/inline_svg/issues/25
                    InlineSvg::StaticAssetFinder
                  end
  asset_finder
end

def incompatible_transformation?(klass)
  !klass.is_a?(Class) || !klass.respond_to?(:create_with_value) || !klass.instance_methods.include?(:transform)
end

def initialize
  @custom_transformations = {}
  @asset_file = InlineSvg::AssetFile
  @svg_not_found_css_class = nil
  @raise_on_file_not_found = false
end

def raise_on_file_not_found=(value)
  @raise_on_file_not_found = value
end

def raise_on_file_not_found?
  !!@raise_on_file_not_found
end

def svg_not_found_css_class=(css_class)
  if css_class.present? && css_class.is_a?(String)
    @svg_not_found_css_class = css_class
  end
end