database.js

const mongoose = require('mongoose');
const config = require('./dbConfig.json');

const _dbName = 'voter';
const _userCollectionName = 'user';
const _candidateCollectionName = 'candidate';

if (!config.userName) {
  throw Error('Database not configured. Set environment variables');
}

const userSchema = new mongoose.Schema({
  email: String,
  votes: [{ type: String }],
});
exports.UserCol = mongoose.model(_userCollectionName, userSchema);

const candidateSchema = new mongoose.Schema({
  name: String,
  url: String,
  votes: Number,
  id: String,
});
exports.CandidateCol = mongoose.model(_candidateCollectionName, candidateSchema);

const dbUrl = `mongodb+srv://${config.userName}:${config.password}@${config.hostname}/${_dbName}`;
mongoose.connect(dbUrl);