localServer.js

import compression from 'compression';
import cors from 'cors';
import express from 'express';
import session from 'express-session';
import https from 'https';
import { GUEST_ID, SESSION_TTL, getTls, secret, token } from './global.cjs';
import initDb from './mongodb/index.js';
import connectDb from './mongodb/session.js';
import filesRoute from './routes/files/index.js';
import todosRoute from './routes/todos/index.js';
import usersRoute from './routes/users/index.js';

const PORT = 444;

async function createServer() {
  const app = express();

  /* initialize mongodb
        只在第一次运行程序时初始化数据库的collection和expired字段，并不是打开也不是连接db
    */
  await initDb();

  /* CORS */
  app.use(
    cors({
      origin: true,
      credentials: true,
    })
  );

  /* session middleware */
  app.use(
    session({
      secret,
      store: new (connectDb(session))(undefined, SESSION_TTL),
      resave: false,
      saveUninitialized: false,
      cookie: {
        maxAge: SESSION_TTL,
        secure: true,
        sameSite: 'strict',
      },
    })
  );

  /* compression */
  app.use(compression());
  /* parse json */
  app.use(express.json());
  /* static */
  app.use('/client', express.static('./dist/client', { index: false }));

  /* api routes */
  const apiRouter = express.Router();
  /* validate token and initialize userId */
  apiRouter.use((req, res, next) => {
    if (req.get('token') !== token) {
      return res.end();
    }
    if (req.session.userId === undefined) {
      req.session.userId = GUEST_ID;
    }
    next();
  });
  usersRoute(apiRouter);
  todosRoute(apiRouter);
  filesRoute(apiRouter);
  app.use('/api', apiRouter);

  /* ssr */
  //pagesRoute(app)

  /* error handler */
  // eslint-disable-next-line no-unused-vars
  app.use((err, req, res, next) => {
    res.status(500).send(err.stack);
  });

  return https.createServer(getTls(), app);
}

createServer().then((app) => {
  app.listen(PORT, () => {
    console.log(`Listening on port ${PORT}`);
  });
});