Exercise Tracker $push

1

I am having trouble adding exercises to my exercise array. I am able to populate the other fields of userId and username. It even shows exercise to be an empty array in the database, it just won’t populate.

My code is below. Any help is appreciated.

'use strict';

const express = require('express');
const mongo = require('mongodb');
const mongoose = require('mongoose');
const bodyParser = require('body-parser');
const cors = require('cors');
const crypto = require('crypto-random-string');

const app = express();

const port = process.env.PORT || 3000;

mongoose.connect(process.env.MONGO_URI, { useNewUrlParser: true, useCreateIndex: true });

app.use(cors())

app.use(bodyParser.urlencoded({extended: false}))

let exerciseSchema = new mongoose.Schema({
  username: {
    type: String,
    required: true,
    unique: true
  },
  userId: {
    type: String
  },
  exercise: [{
    description: String,
    duration: Number,
    date: {
      type: Date,
      default: Date.now()
    }
  }]
});

const Exercise = mongoose.model('Exercise', exerciseSchema);

app.use('/public', express.static(process.cwd() + '/public'));

app.get('/', function(req, res){
  res.sendFile(process.cwd() + '/views/index.html');
});

app.post('/api/exercise/new-user', async (req, res) => {
  let {username} = req.body;
  
  const duplicateData = await Exercise.find({username: `${username}`});
  console.log(duplicateData.length);
  
  if (duplicateData.length > 0) {
    console.log(duplicateData.length)
    const {username, userId} = duplicateData[0];
    return res.json({username, userId});
  };
  
  if (duplicateData.length < 1) {
    let user_Id = crypto({length: 8, type: 'base64'});
    console.log(user_Id);
    
    let saveExercise = await Exercise.create({
      username: `${req.body.username}`,
      userId: `${user_Id}`
    });
    console.log(`Saved ${saveExercise}`);
    
    const duplicateData = await Exercise.find({username: `${req.body.username}`});
    const {username, userId} = duplicateData[0];
    return res.json({username, userId});
    
  };
});

app.post('/api/exercise/add', async (req, res) => {
  
  let {userId, description, duration, date} = req.body;
  
  const duplicateData = await Exercise.find({userId: `${userId}`});
  console.log(duplicateData);
  
  if (duplicateData < 1) {
    res.json({error: 'ID Unknown'});
  };
  
  if (duplicateData > 0) {
    let {userId, description, duration, date} = req.body;
    let exercise = {
      description: description,
      duration: duration,
      date: date
    };
    
    Exercise.findOneAndUpdate(
      {userId: userId}, 
      {$push: {
        exercise: {
          description: description,
          duration: duration,
          date: date
          }
        }
      }, 
      {upsert: true, new: true}, 
      ((err, data) => {
        if(err) throw err;
      }));
  };

});

// Not found middleware

// Error Handling middleware

app.listen(port, () => {
console.log('Node.js listening...')
})
2

There is not .length appended to duplicateData.