class Middleman::Extensions::DirectoryIndexes::DirectoryIndexManager

def initialize(app)
  @app = app
end

def manipulate_resource_list(resources)
  index_file = @app.index_file
  new_index_path = "/#{index_file}"
  
  resources.each do |resource|
    # Check if it would be pointless to reroute
    next if resource.path == index_file || 
            resource.path.end_with?(new_index_path) || 
            File.extname(index_file) != resource.ext
    
    # Check if frontmatter turns directory_index off
    d = resource.data
    next if d && d["directory_index"] == false
  
    # Check if file metadata (options set by "page" in config.rb) turns directory_index off
    if resource.metadata[:options] && resource.metadata[:options][:directory_index] == false
      next
    end
    
    resource.destination_path = resource.destination_path.chomp(File.extname(index_file)) + new_index_path
  end
end