137 lines
2.8 KiB
JavaScript
137 lines
2.8 KiB
JavaScript
"use strict";
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/**
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* Model: Users
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*/
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const AWS = require(`aws-sdk`);
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const shortid = require(`shortid`);
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const utils = require(`../utils`);
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const dynamodb = new AWS.DynamoDB.DocumentClient({
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region: process.env.AWS_REGION
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});
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/**
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* Register user
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* @param {string} user.email User email
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* @param {string} user.password User password
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*/
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const register = async (user = {}) => {
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// Validate
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if (!user.email) throw new Error(`"email" is required`);
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if (!user.password) {
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throw new Error(`"password" is required`);
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}
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if (!utils.validateEmailAddress(user.email)) {
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throw new Error(`"${user.email}" is not a valid email address`);
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}
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// Check if user is already registered
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const existingUser = await getByEmail(user.email);
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if (existingUser) {
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throw new Error(`A user with email "${user.email}" is already registered`);
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}
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user.password = utils.hashPassword(user.password);
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// Save
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const params = {
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TableName: process.env.db,
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Item: {
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hk: user.email,
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sk: `user`,
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sk2: shortid.generate(),
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createdAt: Date.now(),
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updatedAt: Date.now(),
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password: user.password,
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}
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};
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await dynamodb.put(params).promise();
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};
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/**
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* Get user by email address
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* @param {string} email
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*/
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const getByEmail = async (email) => {
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// Validate
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if (!email) {
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throw new Error(`"email" is required`);
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}
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if (!utils.validateEmailAddress(email)) {
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throw new Error(`"${email}" is not a valid email address`);
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}
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// Query
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const params = {
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TableName: process.env.db,
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KeyConditionExpression: `hk = :hk`,
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ExpressionAttributeValues: { ':hk': email }
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};
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let user = await dynamodb.query(params).promise();
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user = user.Items && user.Items[0] ? user.Items[0] : null;
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if (user) {
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user.id = user.sk2;
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user.email = user.hk;
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}
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return user;
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};
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/**
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* Get user by id
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* @param {string} id
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*/
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const getById = async (id) => {
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// Validate
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if (!id) {
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throw new Error(`"id" is required`);
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}
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// Query
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const params = {
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TableName: process.env.db,
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IndexName: process.env.dbIndex1,
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KeyConditionExpression: `sk2 = :sk2 and sk = :sk`,
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ExpressionAttributeValues: { ':sk2': id,
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':sk': `user` }
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};
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let user = await dynamodb.query(params).promise();
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user = user.Items && user.Items[0] ? user.Items[0] : null;
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if (user) {
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user.id = user.sk2;
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user.email = user.hk;
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}
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return user;
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};
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/**
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* Convert user record to public format
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* This hides the keys used for the dynamodb's single table design and returns human-readable properties.
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* @param {*} user
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*/
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const convertToPublicFormat = (user = {}) => {
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user.email = user.hk || null;
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user.id = user.sk2 || null;
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if (user.hk) delete user.hk;
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if (user.sk) delete user.sk;
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if (user.sk2) delete user.sk2;
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if (user.password) delete user.password;
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return user;
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};
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module.exports = {
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register,
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getByEmail,
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getById,
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convertToPublicFormat,
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};
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