App.TableSortable =
  getCellValue: (row, index) ->
    $(row).children('td').eq(index).text()

  comparer: (index) ->
    (a, b) ->
      valA = App.TableSortable.getCellValue(a, index)
      valB = App.TableSortable.getCellValue(b, index)
      return if $.isNumeric(valA) and $.isNumeric(valB) then valA - valB else valA.localeCompare(valB)

  initialize: ->
    $('table.sortable th').click ->
      table = $(this).parents('table').eq(0)
      rows = table.find('tr:gt(0)').not('tfoot tr').toArray().sort(App.TableSortable.comparer($(this).index()))
      @asc = !@asc
      if !@asc
        rows = rows.reverse()
      i = 0
      while i < rows.length
        table.append rows[i]
        i++
      return