userauthjs/mongoose/usergroups.js

Node module for management of user/group privileges and sessions

var async = require('async')
var bcrypt = require('bcrypt')
var User = require('./models/user')
var Usergroup = require('./models/usergroup')
var Privilege = require('./models/privilege')

/**
* Adds privilege to specified usergroups.
*/
exports.add = function(groupname, next) {
	Usergroup.findOne({ groupname: groupname }, function(err, usergroup) {
		if (err) { return next(err) }
		if (usergroup) { return next(null, false) }
		usergroup = new Usergroup({ groupname: groupname})
		usergroup.save(function(err, usergroup) {
			if (err) { return next(err) }
			if (process.env.USERAUTH_LOG) { console.log('Usergroup added: ' + usergroup.groupname) }
			next(null, usergroup)
		})
	})
}
	
exports.remove = function(groupname, next) {
	Usergroup.findOne({ groupname: groupname }, function(err, usergroup) {
		if (err) { return next(err) }
		if (!usergroup) { return next(null, false) }
		usergroup.remove(function(err, usergroup) {
			if (err) { return next(err) }
			if (!usergroup) { return next(null, false) }
			Privilege.find(function(err, privileges) {
				if (err) { return next(err) }
				if (!privileges) { return next(null, false) }
				var indexGroup
				async.each(privileges, function(privilege, done) {
					indexGroup = privilege.usergroups.indexOf(usergroup._id)
					if (indexGroup  > -1) {
						privilege.usergroups.splice(indexGroup, 1)
						privilege.save(function(err, privilege) {
							if (err) { return done(err) }
							if (process.env.USERAUTH_LOG) { console.log('Usergroup \''+usergroup.groupname+'\' removed from privilege \''+privilege.title+'\'') }
							done()
						})
					} else {
						done()
					}
				}, function(err) {
					if (err) { return next(err) }
					if (process.env.USERAUTH_LOG) { console.log('Usergroup removed: '+usergroup.groupname) }
					next(null, usergroup)
				})
			})	
		})
	})
}

exports.addUser = function(username, groupname, next) {
	User.findOne({ username: username }, function(err, user) {
		if (err) { return next(err) }
		if (!user) { return next(null, false) }
		Usergroup.findOne({ groupname: groupname }, function(err, usergroup) {
			if (err) { return next(err) }
			if (!usergroup) { return next(null, false) }
			if (user.usergroups.indexOf(usergroup._id) > -1) { return next(null, false) }
			user.usergroups.push(usergroup._id)
			user.save(function(err, user) {
				if (err) { return next(err) }
				if (!user) { return next(null, false) }
				if (process.env.USERAUTH_LOG) { console.log('User \'' + user.username + '\' to usergroup \''+usergroup.groupname + '\'') }
				next(null, user)
			})
		})
	})
}

exports.removeUser = function(username, groupname, next) {
	User.findOne({ username: username })
	.select('usergroups')
	.exec(function(err, user) {
		if (err) { return next(err) }
		if (!user) { return next(null, false) }
		Usergroup.findOne({ groupname: groupname }, function(err, usergroup) {
			if (err) { return next(err) }
			if (!usergroup) { return next(null, false) }
			indexGroup = user.usergroups.indexOf(usergroup._id)
			if (indexGroup  < 0 ) { return next(null, false) }
			user.usergroups.splice(indexGroup, 1)
			user.save(function(err, user) {
				if (err) { return next(err) }
				if (!user) { return next(null, false) }
				if (process.env.USERAUTH_LOG) { console.log('User \'' + user.username + '\' removed from usergroup \''+usergroup.groupname + '\'') }
				next(null, user)
			})
		})
	})
}