module Rad
  module ViewRoutingHelper
    inherit AbstractRoutingHelper
    
    # 
    # 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
    #     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
    
    def link_to *args, &block      
      # content
      content = if block
        capture(&block)
      else
        args.shift
      end
            
      # url, html_options
      if args.first.is_a? String
        args.size.must_be.in 1..2
        url, html_options = args
        html_options ||= {}
      else
        if url = special_url(args.first)
          args.size.must_be <= 2
          html_options = args[1] || {}
        else
          html_options = if args[-1].is_a?(Hash) and args[-1].is_a?(Hash)
            args.pop
          else
            {}
          end
          
          args << {} unless args[-1].is_a?(Hash)
          url = url_for(*args)
        end
      end
      
      # add javascript
      add_js_link_options! url, html_options
      
      tag :a, content, html_options.merge(href: url)
    end    
    
    protected
      # 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

        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