init

src/config/config.js

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+const dotenv = require('dotenv');
+const path = require('path');
+const Joi = require('joi');
+
+dotenv.config({ path: path.join(__dirname, '../../.env') });
+
+const envVarsSchema = Joi.object()
+  .keys({
+    NODE_ENV: Joi.string().valid('production', 'development', 'test').required(),
+    PORT: Joi.number().default(3000),
+    MONGODB_URL: Joi.string().required().description('Mongo DB url'),
+    JWT_SECRET: Joi.string().required().description('JWT secret key'),
+    JWT_ACCESS_EXPIRATION_MINUTES: Joi.number().default(30).description('minutes after which access tokens expire'),
+    JWT_REFRESH_EXPIRATION_DAYS: Joi.number().default(30).description('days after which refresh tokens expire'),
+    JWT_RESET_PASSWORD_EXPIRATION_MINUTES: Joi.number()
+      .default(10)
+      .description('minutes after which reset password token expires'),
+    JWT_VERIFY_EMAIL_EXPIRATION_MINUTES: Joi.number()
+      .default(10)
+      .description('minutes after which verify email token expires'),
+    SMTP_HOST: Joi.string().description('server that will send the emails'),
+    SMTP_PORT: Joi.number().description('port to connect to the email server'),
+    SMTP_USERNAME: Joi.string().description('username for email server'),
+    SMTP_PASSWORD: Joi.string().description('password for email server'),
+    EMAIL_FROM: Joi.string().description('the from field in the emails sent by the app'),
+  })
+  .unknown();
+
+const { value: envVars, error } = envVarsSchema.prefs({ errors: { label: 'key' } }).validate(process.env);
+
+if (error) {
+  throw new Error(`Config validation error: ${error.message}`);
+}
+
+module.exports = {
+  env: envVars.NODE_ENV,
+  port: envVars.PORT,
+  mongoose: {
+    url: envVars.MONGODB_URL + (envVars.NODE_ENV === 'test' ? '-test' : ''),
+    options: {
+      useCreateIndex: true,
+      useNewUrlParser: true,
+      useUnifiedTopology: true,
+    },
+  },
+  jwt: {
+    secret: envVars.JWT_SECRET,
+    accessExpirationMinutes: envVars.JWT_ACCESS_EXPIRATION_MINUTES,
+    refreshExpirationDays: envVars.JWT_REFRESH_EXPIRATION_DAYS,
+    resetPasswordExpirationMinutes: envVars.JWT_RESET_PASSWORD_EXPIRATION_MINUTES,
+    verifyEmailExpirationMinutes: envVars.JWT_VERIFY_EMAIL_EXPIRATION_MINUTES,
+  },
+  email: {
+    smtp: {
+      host: envVars.SMTP_HOST,
+      port: envVars.SMTP_PORT,
+      auth: {
+        user: envVars.SMTP_USERNAME,
+        pass: envVars.SMTP_PASSWORD,
+      },
+    },
+    from: envVars.EMAIL_FROM,
+  },
+};

src/config/logger.js

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+const winston = require('winston');
+const config = require('./config');
+
+const enumerateErrorFormat = winston.format((info) => {
+  if (info instanceof Error) {
+    Object.assign(info, { message: info.stack });
+  }
+  return info;
+});
+
+const logger = winston.createLogger({
+  level: config.env === 'development' ? 'debug' : 'info',
+  format: winston.format.combine(
+    enumerateErrorFormat(),
+    config.env === 'development' ? winston.format.colorize() : winston.format.uncolorize(),
+    winston.format.splat(),
+    winston.format.printf(({ level, message }) => `${level}: ${message}`)
+  ),
+  transports: [
+    new winston.transports.Console({
+      stderrLevels: ['error'],
+    }),
+  ],
+});
+
+module.exports = logger;

src/config/morgan.js

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+const morgan = require('morgan');
+const config = require('./config');
+const logger = require('./logger');
+
+morgan.token('message', (req, res) => res.locals.errorMessage || '');
+
+const getIpFormat = () => (config.env === 'production' ? ':remote-addr - ' : '');
+const successResponseFormat = `${getIpFormat()}:method :url :status - :response-time ms`;
+const errorResponseFormat = `${getIpFormat()}:method :url :status - :response-time ms - message: :message`;
+
+const successHandler = morgan(successResponseFormat, {
+  skip: (req, res) => res.statusCode >= 400,
+  stream: { write: (message) => logger.info(message.trim()) },
+});
+
+const errorHandler = morgan(errorResponseFormat, {
+  skip: (req, res) => res.statusCode < 400,
+  stream: { write: (message) => logger.error(message.trim()) },
+});
+
+module.exports = {
+  successHandler,
+  errorHandler,
+};

src/config/passport.js

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+const { Strategy: JwtStrategy, ExtractJwt } = require('passport-jwt');
+const config = require('./config');
+const { tokenTypes } = require('./tokens');
+const { User } = require('../models');
+
+const jwtOptions = {
+  secretOrKey: config.jwt.secret,
+  jwtFromRequest: ExtractJwt.fromAuthHeaderAsBearerToken(),
+};
+
+const jwtVerify = async (payload, done) => {
+  try {
+    if (payload.type !== tokenTypes.ACCESS) {
+      throw new Error('Invalid token type');
+    }
+    const user = await User.findById(payload.sub);
+    if (!user) {
+      return done(null, false);
+    }
+    done(null, user);
+  } catch (error) {
+    done(error, false);
+  }
+};
+
+const jwtStrategy = new JwtStrategy(jwtOptions, jwtVerify);
+
+module.exports = {
+  jwtStrategy,
+};

src/config/roles.js

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+const allRoles = {
+  user: [],
+  admin: ['getUsers', 'manageUsers'],
+};
+
+const roles = Object.keys(allRoles);
+const roleRights = new Map(Object.entries(allRoles));
+
+module.exports = {
+  roles,
+  roleRights,
+};

src/config/tokens.js

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+const tokenTypes = {
+  ACCESS: 'access',
+  REFRESH: 'refresh',
+  RESET_PASSWORD: 'resetPassword',
+  VERIFY_EMAIL: 'verifyEmail',
+};
+
+module.exports = {
+  tokenTypes,
+};