const mongoose = require('mongoose');
const Schema = mongoose.Schema;
const bcrypt = require('bcrypt-nodejs');

// Define our model
const userSchema = new Schema({
	email: { type: String, unique: true, lowercase: true},
	password: String,
	adress: String,
	age: String,
	firstname: String,
	lastname: String,
	city: String,
	travel: String
});

// On Save Hook, encrypt password

// Before saving a model, run this function

userSchema.pre('save', function(next){

	//get acess to the user model

	const user = this; // user.email, user.password


	//generate a salt then run callback

	bcrypt.genSalt(10, function(err, salt) {
		if (err) {return next(err);}

		// hash(encrypt) our password using the salt
		bcrypt.hash(user.password, salt, null, function(err, hash){
			if (err) {return next(err); }

			// overwrite plain text password with encrypted password
			user.password = hash;
			next();
		});
	});
});

userSchema.methods.comparePassword = function(candidatePassword, callback ){
	bcrypt.compare(candidatePassword, this.password, function(err, isMatch){
		if (err) { return callback(err); }

		callback(null, isMatch);
	});
}

// Create the model class
const ModelClass = mongoose.model('user', userSchema);

// Export the model
module.exports = ModelClass;