app.ts

import express from 'express';
import * as dotenv from 'dotenv';
dotenv.config({ path: __dirname + '/.env' });
import * as http from 'http';
import * as bodyparser from 'body-parser';
import * as winston from 'winston';
import * as expressWinston from 'express-winston';
import serverless from 'serverless-http';

import cors from 'cors';
import { CommonRoutesConfig } from './common/common.routes.config';
import { UserRoutes } from './routes/user.routes.config';

import debug from 'debug';
import mongoose from 'mongoose';
import { verifyToken } from './middleware/verify-token';
const app: express.Application = express();
const server: http.Server = http.createServer(app);
const port = process.env.PORT || 3000;
const routes: Array<CommonRoutesConfig> = [];
const debugLog: debug.IDebugger = debug('app');

// Only connect to MongoDB if MONGO_URL is provided
const mongoUrl = process.env.MONGO_URL || 'mongodb://localhost:27017/tra-api';
mongoose.connect(mongoUrl).catch(console.error);
const db = mongoose.connection;
db.on('error', console.error.bind(console, 'MongoDB connection error:'));
db.once('open', () => {
  console.log(`Connected to MongoDB at ${mongoUrl}`);
});

app.use(bodyparser.json());
app.use(cors());

app.use(
  expressWinston.logger({
    transports: [new winston.transports.Console()],
    format: winston.format.combine(
      winston.format.colorize(),
      winston.format.json()
    ),
  })
);

app.use(
  expressWinston.errorLogger({
    transports: [new winston.transports.Console()],
    format: winston.format.combine(
      winston.format.colorize(),
      winston.format.json()
    ),
  })
);

app.use(verifyToken);

app.get('/', (req: express.Request, res: express.Response) => {
  res.status(200).send(`Server running at http://localhost:${port}`);
});

routes.push(new UserRoutes(app));

if (process.env.SERVERLESS === 'true') {
  const lambdaHandler = serverless(app);
  module.exports.handler = lambdaHandler;
} else {
  server.listen(port, () => {
    debugLog(`Server running at http://localhost:${port}`);
    console.info(`Server running at http://localhost:${port}`);
    routes.forEach((route: CommonRoutesConfig) => {
      debugLog(`Routes configured for ${route.getName()}`);
    });
  });
}