module Crystal
  module ViewUrlHelper
    # 
    # links
    # 
    def link_to *args, &block
      # parse args
      content = if block
        capture(&block)
      else
        args.shift
      end
      
      special = nil
      html_options = if args.last.is_a?(Hash)
        if args[-2].is_a?(Hash)
          args.pop.stringify_keys!
        else
          {}
        end          
      else        
        args << {}
        {}
      end            
      
      # build url
      url = special_url(*args) || url_for(*args)
      
      # add javascript
      add_js_link_options! url, html_options
      
      tag :a, content, html_options.merge('href' => url)
    end
    
    # TODO3 refactor to use data-remote, data-method, data-confirm
    def add_js_link_options! url, html_options
      confirm, remote, method = html_options.delete("confirm"), html_options.delete('remote'), 
        html_options.delete("method")
        
      remote ||= config.remote_link_formats!.include? url.marks.format.to_s

      onclick = if remote
        method ||= :get
        %{$(this).link_to({method: '#{method}', ajax: true}); return false;}
      elsif method
        %{$(this).link_to({method: '#{method}'}); return false;}
      else
        nil
      end

      # if onclick and ActionController::Base.defer_static_scripts?
      #   html_options['class'] ||= ""
      # end

      if confirm 
        onclick = if onclick
          "if(confirm(#{confirm.js_escape})){#{onclick}}; return false;"
        else
          "return confirm(#{confirm.js_escape});"
        end
      end

      html_options["onclick"] = onclick if onclick        
    end
  end    
end