frisb/fdboost

AbstractAdapter = require('./abstract')
TypedBuffer = require('../typedbuffer')

EPOCH_DATE = new Date(1900, 0, 1)

class DateTime extends TypedBuffer

module.exports = (encoding) ->
    class DateTimeAdapter extends AbstractAdapter     
      getType: -> 
        DateTime
     
      loadData: (value) ->
        @initData(8)
        
        days = ~~((value.getTime() - EPOCH_DATE.getTime()) / (1000 * 60 * 60 * 24))
        seconds = value.getHours() * 60 * 60
        seconds += value.getMinutes() * 60
        seconds += value.getSeconds()
        milliseconds = (seconds * 1000) + value.getMilliseconds()
        
        @writeInt32LE(days)
        @writeUInt32LE(milliseconds)   
        return 
        
      getValue: (buffer) ->
        days = buffer.readInt32LE(@pos)
        milliseconds = buffer.readUInt32LE(@pos + 4)
      
        date = new Date(1900, 0, 1)
        date.setDate(date.getDate() + days)
        date.setMilliseconds(date.getMilliseconds() + milliseconds)
        
        date