module MainHelper  
 helpers do   
   
    def update_paths!( path_ids, path_names )
puts "UPDAING PATH #{path_ids} -- #{path_names}"      
      session[:path_ids]   = path_ids
      session[:path_names] = path_names
    end
    
    def align_for( value )
      return "right" if value.is_a?(Fixnum)
      "left"
    end
    
    # Add thousand markers
    def format_number( value )      
      return value.to_s.gsub(/(\d)(?=\d{3}+(\.\d*)?$)/, '\1,') if value.instance_of?(Fixnum)
      value
    end
   
    def back_paths!      
      path_ids   = session[:path_ids]
      new_path_ids = path_ids.split( "|" )
      new_path_ids.pop
    
      path_names = session[:path_names]    
      new_path_names = path_names.split( "|" )
      new_path_names.pop
      
      update_paths!( new_path_ids.join( "|" ), new_path_names.join( "|" ) )
    end
    
    def title_for( path_names )
      tokens = path_names.split( "|" )
      buff = case tokens.length 
        when 2 : "Environment"
        when 3 : "Database"
        else     "Collection"
      end
      
      buff += " <em>#{tokens.last}</em>"
    end
    
    def display_info( info )
      return info if info.is_a?( String )
      if info.is_a?( Hash )
        @info = info
        partial :'explore/dump_hash'
      elsif info.is_a?( Array )
        @info = info
        partial :'explore/dump_array'
      else
        format_number( info )
      end
    end
    
    def partial( page, options={} )
      if page.to_s.index( /\// )
        page = page.to_s.gsub( /\//, '/_' ) 
      else 
        page = "_" + page.to_s
      end
      erb page.to_sym, options.merge!( :layout => false )
    end
   
    JS_ESCAPE_MAP = 
    {
      '\\'    => '\\\\',
      '</'    => '<\/',
      "\r\n"  => '\n',
      "\n"    => '\n',
      "\r"    => '\n',
      '"'     => '\\"',
      "'"     => "\\'" 
    }   
    def escape_javascript(javascript)
      if javascript
         javascript.gsub(/(\\|<\/|\r\n|[\n\r"'])/) { JS_ESCAPE_MAP[$1] }
      else
         ''
      end
    end    
  end  
end