class Middleman::Extensions::MinifyJavaScript

def ignore?(path)
  @ignore.any? { |ignore| ::Middleman::Util.path_match(ignore, path) }
end

def initialize(app, options_hash = ::Middleman::EMPTY_HASH, &block)
  super
  @ignore = Array(options[:ignore]) + [/\.min\./]
  @compressor = options[:compressor]
  @compressor = @compressor.to_proc if @compressor.respond_to? :to_proc
  @compressor = @compressor.call if @compressor.is_a? Proc
end

def manipulate_resource_list_container!(resource_list)
  resource_list.by_binary(false).each do |r|
    type = r.content_type.try(:slice, /^[^;]*/)
    if options[:inline] && minifiable_inline?(type)
      r.add_filter method(:minify_inline)
    elsif minifiable?(type) && !ignore?(r.destination_path)
      r.add_filter method(:minify)
    end
  end
end

def minifiable?(content_type)
  options[:content_types].include?(content_type)
end

def minifiable_inline?(content_type)
  options[:inline_content_types].include?(content_type)
end

def minify(content)
  @compressor.compress(content)
rescue ::ExecJS::ProgramError => e
  warn "WARNING: Couldn't compress JavaScript in #{@path}: #{e.message}"
  content
end

def minify_inline(content)
  content.gsub(INLINE_JS_REGEX) do |match|
    first = Regexp.last_match(1)
    inline_content = Regexp.last_match(2)
    last = Regexp.last_match(3)
    # Only compress script tags that contain JavaScript (as opposed to
    # something like jQuery templates, identified with a "text/html" type).
    if !first.include?('type=') || first.include?('text/javascript')
      first + minify(inline_content) + last
    else
      match
    end
  end
end