module DefaultWidgetHelper
  def get_field_header(field)
    I18n.t(@page_part.module_app.widget_fields.select{|t|t[0]==field}[0][1])
  end

  def link_to_field(row_data,field)
    method_ary = @page_part.module_app.widget_fields_link_method
    if method_ary.has_key? field
      url = case method_ary[field]["args"]
      when nil # no args
        get_data_link(method_ary[field]["method"])
      when :self # passing self
        get_data_link(method_ary[field]['method'],row_data.id)
      else 
        ary = method_ary[field]["args"].clone
        object_hash = ary.each do |key,val|  
          ary[key]= type_trans_or_to_s(row_data.send(val[0]).send(val[1]))
        end
        get_data_link(method_ary[field]['method'],object_hash)
      end
      
      link_to row_data.send(field),url
     else
      type_trans_or_to_s(row_data.send(field) )
    end
  end

  # def get_args_mapping(object,row_hash)
  #   first_hash = row_hash.first

  #   # row_data.send(method_ary[field]["args"])
  # end

  def type_trans_or_to_s(object)
    case object
      when Date
        display_date(object)
      when DateTime
        display_date_time(object)
      when String
        object
      else
        object.to_s      
    end
  end

  def get_data_link(method_entry,object = nil)
    case object
    when nil
      eval method_entry
    else
      object = "'#{object.to_s}'" if object.class == BSON::ObjectId
      eval("#{method_entry}(#{object})" ) 
    end
  end

  def get_display(row_data,field_setting)
    label = row_data.send(field_setting[:method])
    type_trans_or_to_s(label)
  end

  def get_row_data(row_data,field)
    field_is_link = (field[0][1]== 'false' ?  false : true )
    field_setting = {:class=>field[0][1],:method=>field[0][0]}
    if  field_is_link
      field_link = field[0][1].to_s + '_path'
      link = link_to(get_display(row_data,field_setting),field_link.send(row_data))
      content_tag(:span,link,:class=>field_setting[:class])
    else
      content_tag(:span,get_display(row_data,field_setting),:class=>field_setting[:class])
    end
  end
end