return new Promise(function(resolve, reject){
var thisUserLists = [], newUserList = [];
// Fill thisUserLists array with names of the user lists
thisUserLists = user.userLists.map(function(list){
return list.name;
});
// We convert userList array to a set; this will make sure there will be no duplicate entries in the user list array
var thisUserListsSet = new Set(thisUserLists);
// If our new list name is not already in the set
if (!thisUserListsSet.contains(listName)) {
// save new list
newUserList = new UserList({
name: listName,
users: []
});
newUserList.save(function(err){
if (err) reject(err);
resolve(newUserList);
});
}
else {
resolve(new ReferenceError("User list with the same name already exists."));
}
});
parents: function(){
var result = new Set();
this.parentAccountabilities.forEach(function(x) {
result.add(x.parent());
});
return result;
},
parents: function(partytype){
var result = new Set();
this.parentAccountabilities.forEach(function(x) {
if (x.type() == partytype) {
result.add(x.parent());
}
});
return result;
},
userCommon.checkUserExistence(userToAdd).then(function(result) {
if (result === "already exists.") {
// We use a set so duplicate user entries inside a user list are impossible
listToSaveSet = new Set(foundUserList.users);
listToSaveSet.add(userToAdd);
listToSave = listToSaveSet.map(function(usr){
return usr;
})
UserList.update( // we use model object itself, not an instance - it wouldn't work
{ _id: foundUserList._id },
{ $set: { users: listToSave } },
function(err){
if (err) reject(err); // TODO
resolve();
}
);
} // if result
else {
resolve(new ReferenceError("User to add doesn't exist"));
}
}).catch(function(reason){
this.parentAccountabilities.forEach(function(x) {
result.add(x.parent());
});
this.parentAccountabilities.forEach(function(x) {
if (x.type() == partytype) {
result.add(x.parent());
}
});