mongoose save not working in second part of if statement - node.js

Question

I have a function in my Node/Express API where I first check to see if a "Contact" exists in my "Contacts" collection. If it does, I do an update. If one doesn't exist with the email in the query, then I create a new one.
If a contact exists, the contact.save() works. But if the contact doesn't exist, the contact.save() generates an error message saying "contact.save() is not a function.
I don't see what I'm doing wrong. Hoping someone out there can see it easy enough and give me some advice.
Here is the code:
// SEARCH IF CONTACT EXISTS IN SENDERS CONTACTS - BY OWNERID AND EMAIL IN EMAILS
Contact.findOne({'owner_id': req.body.owner_id, 'emails.email_address':req.body.invited_email}, function(err, contact){
if(err)
console.log('Error in looking for contact.');
// IF A CONTACT EXISTS ---
if(contact){
console.log('--> CONTACT FOUND');
// SET CONTACT SHARED INFORMATION
contact.shared.invite_id = req.body.invited_first_name + req.body.invited_last_name + req.body.owner_id;
contact.shared.profile_id = req.body.profile_id;
contact.shared.first_name = req.body.first_name;
contact.shared.company = req.body.company;
contact.shared.title = req.body.title;
contact.shared.last_name = req.body.last_name;
contact.shared.initial = req.body.initial;
contact.shared.linkedin = req.body.linkedin;
contact.shared.google = req.body.google;
contact.shared.facebook = req.body.facebook;
contact.shared.pinterest = req.body.pinterest;
contact.shared.twitter = req.body.twitter;
contact.shared.emails = req.body.emails;
contact.shared.phones = req.body.phones;
contact.shared.addresses = req.body.addresses;
contact.shared.link = req.body.invited_first_name + req.body.invited_last_name + req.body.owner_id;
// ADD TO ALERT INFORMING SENDER THAT HE/SHE SHARED INFO
alerts.genShare(req.body.owner_id, req.body.invited_first_name, req.body.invited_last_name, req.body.invited_email);
// SAVE CONTACT INFORMATION
contact.save(function(err){
if(err)
res.send(err);
res.json(contact);
});
// IF INVITED IS NOT A USER - CREATE USER ACCOUNT
if(!inviteIsUser){
var phones = req.body.phones;
var emails = req.body.emails;
var addresses = req.body.addresses;
var email = [{email_address:req.body.invited_email, email_type:'home'}];
var share = {
invite_id:req.body.invited_first_name + req.body.invited_last_name + req.body.owner_id,
profile_id:req.body.profile_id,
first_name:req.body.first_name,
last_name:req.body.last_name,
initial:req.body.initial,
birthday:req.body.birthday,
highschool:req.body.highschool,
college:req.body.college,
facebook:req.body.facebook,
linkedin:req.body.linkedin,
google:req.body.google,
pinterest:req.body.pinterest,
user_image:req.body.user_image,
emails:emails,
addresses:addresses,
phones:phones,
shared:{}
};
var newContact = {
emails: email,
profile_id: req.body.profile_id,
first_name: req.body.invited_first_name,
last_name : req.body.invited_last_name,
shared:share
};
//CREATE NEW USER AND ADD CONTACT FOR PERSON BEING SHARED WITH
newUser = userCreate.genUser(req.body.invited_email, newContact);
}
} else {
var contact = new Contact();
//IF CONTACT EMAIL IS NOT FOUND, A NEW CONTACT IS CREATED
console.log('Contact NOT found');
var phones = req.body.phones;
var emails = req.body.emails;
var addresses = req.body.addresses;
var email = [{email_address:req.body.invited_email, email_type:'home'}];
var share = {
invite_id:req.body.invited_first_name + req.body.invited_last_name + req.body.owner_id,
profile_id:req.body.profile_id,
first_name:req.body.first_name,
last_name:req.body.last_name,
initial:req.body.initial,
birthday:req.body.birthday,
highschool:req.body.highschool,
college:req.body.college,
facebook:req.body.facebook,
linkedin:req.body.linkedin,
google:req.body.google,
pinterest:req.body.pinterest,
user_image:req.body.user_image,
emails:emails,
addresses:addresses,
phones:phones,
link:req.body.invited_first_name + req.body.invited_last_name + req.body.owner_id,
shared:{}
};
contact = {
emails: email,
owner_id:req.body.owner_id,
profile_id:req.body.profile_id,
first_name: req.body.invited_first_name,
last_name : req.body.invited_last_name,
shared:share
};
console.log('Contact: ', contact);
// SAVE CONTACT INFORMATION
contact.save(function(err){
if(err)
res.send(err);
res.json(contact);
});
// // IF INVITED IS NOT A USER - CREATE USER ACCOUNT
// if(!inviteIsUser){
// newUser = userCreate.genUser(req.body.invited_email, contact);
// }
// ADD TO ALERT INFORMING SENDER THAT HE/SHE SHARED INFO
alerts.genShare(req.body.owner_id, req.body.invited_first_name, req.body.invited_last_name, req.body.invited_email);
}
})

Answer 1

You have rewritten your contact with an object:
contact = {
emails: email,
owner_id:req.body.owner_id,
profile_id:req.body.profile_id,
first_name: req.body.invited_first_name,
last_name : req.body.invited_last_name,
shared:share
};
And then you try to call function save which is not present there.