var SUFFIX = 'dc=vis,dc=net';
var pfUsername = '<ADMINDN>';
var pfPassword = '<ADMINPW>';
var url = 'ldaps://vis.res.eq.edu.au';
var filter = '(uid=mjwoo1)';

var oldPassword = "oldpw";
var newPassword =  "newpw";

var Client, testClient, anon_client;

var ldap = require('ldapjs'),
	_ = require('lodash'),
	fs = require('fs');


function encodePassword(password) {
    return new Buffer('"' + password + '"', 'utf16le').toString();
}

ldap.Attribute.settings.guid_format = ldap.GUID_FORMAT_B;

Client = ldap.createClient({
  url: url,
  tlsOptions: {
  ca: [
	  fs.readFileSync('MPEROOTCA.pem'),
	  fs.readFileSync('MPEINTPOLCA.pem'),
	  fs.readFileSync('MPEINTISS1CA.pem')
	  ]
  }
});


Client.bind(pfUsername, pfPassword, function (err, result) {
	if (err) {
		console.error('error: ' + err);
	} else {
		Client.search('dc=vis,dc=net', {
			filter: filter,
			attributes: 'dn',
			scope: 'sub'
		}, function(err, res) {
			res.on('searchEntry', function(entry) {
				var userDN = entry.object.dn;
				Client.modify(userDN, [
					new ldap.Change({
						operation: 'delete',
						modification: {
							unicodePwd: encodePassword(oldPassword)
						}
					}),
					new ldap.Change({
						operation: 'add',
						modification: {
							unicodePwd: encodePassword(newPassword)
						}
					})
				], function(err) {
					if (err) {
						console.log(err.code);
						console.log(err.name);
						console.log(err.message);
						client.unbind();
					}
					else {
						console.log('Password changed!');
					}
				});
			});
			res.on('error', function(err) {
				console.error('error: ' + err.message);
			});
			res.on('end', function(result) {
				console.log('status: ' + result.status);
			});
		});
	}
});



// Client.unbind(function (error) {
// });