// Copyright 2011 Mark Cavage, Inc.  All rights reserved.

var assert = require('assert');
var util = require('util');

var asn1 = require('asn1');

var LDAPMessage = require('./message');
var LDAPResult = require('./result');

var dn = require('../dn');
var Attribute = require('../attribute');
var Protocol = require('../protocol');

///--- Globals

var Ber = asn1.Ber;



///--- API

function DeleteRequest(options) {
  if (options) {
    if (typeof(options) !== 'object')
      throw new TypeError('options must be an object');
    if (options.entry && !(options.entry instanceof dn.DN))
      throw new TypeError('options.entry must be a DN');
  } else {
    options = {};
  }

  options.protocolOp = Protocol.LDAP_REQ_DELETE;
  LDAPMessage.call(this, options);

  this.entry = options.entry || null;

  var self = this;
  this.__defineGetter__('type', function() { return 'DeleteRequest'; });
  this.__defineGetter__('_dn', function() {
    return self.entry ? self.entry.toString() : '';
  });
}
util.inherits(DeleteRequest, LDAPMessage);
module.exports = DeleteRequest;


DeleteRequest.prototype._parse = function(ber, length) {
  assert.ok(ber);

  // What a hack; LDAP is so annoying with its decisions of what to
  // shortcut, so this is totally a hack to work around the way the delete
  // message is structured
  this.entry = dn.parse(ber.buffer.slice(0, length).toString());
  ber._offset += length;

  return true;
};


DeleteRequest.prototype._toBer = function(ber) {
  assert.ok(ber);

  var buf = new Buffer(this.entry.toString());
  for (var i = 0; i < buf.length; i++)
    ber.writeByte(buf[i]);

  return ber;
};


DeleteRequest.prototype._json = function(j) {
  assert.ok(j);

  j.entry = this.entry;

  return j;
};