// ./auth/UserModel.js

const mongoose = require('mongoose');
const bcrypt = require('bcrypt');

const userSchema = new mongoose.Schema({
  username: {
    type: String,
    unique: true,
    required: true,
    lowercase: true,
  },
  password: {
    type: String,
    required: true,
    minlength: 4,
  },
});

userSchema.pre('save', function(next) {
  // console.log('pre save hook');

  bcrypt.hash(this.password, 12, (err, hash) => {
    // it's actually 2 ^ 12 rounds
    if (err) {
      return next(err);
    }

    this.password = hash;

    next();
  });
});

userSchema.methods.validatePassword = function(passwordGuess) {
  return bcrypt.compare(passwordGuess, this.password);
};

module.exports = mongoose.model('User', userSchema);