OJ = require '../oj'

getDateFromDnJson = (dnDate) ->
    
  # Transforms a .NET JSON date into a JavaScript date.
  # name='obj'  Object to test
  # type='Boolean' />
  #
  #       var milli = OJ.to.number(DnDate.replace(/\/Date\((\d+)\-?(\d+)\)\//, '$1'));
  #       var offset = OJ.to.number(DnDate.replace(/\/Date\(\d+([\+\-]?\d+)\)\//, '$1'));
  #       var localOffset = new Date().getTimezoneOffset();
  #       return new Date((milli - ((localOffset + (offset / 100 * 60)) * 1000)));
  #       
    
  # Dn Date will look like /Date(1335758400000-0400)/  
  dnDateStr = OJ.to.string(dnDate)
  ret = undefined
  ticks = undefined
  offset = undefined
  localOffset = undefined
  arr = undefined
  ret = OJ.dateTimeMinValue
  if false is OJ.is.nullOrEmpty(dnDateStr)
    dnDateStr = dnDateStr.replace('/', '')
    dnDateStr = dnDateStr.replace('Date', '')
    dnDateStr = dnDateStr.replace('(', '')
    dnDateStr = dnDateStr.replace(')', '')
    arr = dnDateStr.split('-')
    if arr.length > 1
      ticks = OJ.to.number(arr[0])
      offset = OJ.to.number(arr[1])
      localOffset = new Date().getTimezoneOffset()
      ret = new Date((ticks - ((localOffset + (offset / 100 * 60)) * 1000)))
    else if arr.length is 1
      ticks = OJ.to.number(arr[0])
      ret = new Date(ticks)
  ret

  OJ.register 'getDateFromDnJson', getDateFromDnJson
  modules.exports = getDateFromDnJson