app.js

import cors from 'cors';
import helmet from 'helmet'; //provide security enhancement
import morgan from 'morgan'; //log http request history to terminal
import express from 'express';
import courseRouter from './routes/course.js';
import distributionRouter from './routes/distribution.js';
import yearRouter from './routes/year.js';
import planRouter from './routes/plan.js';
import planReviwerRouter from './routes/planReview.js';
import notificationRouter from './routes/notification.js';
import userRouter from './routes/user.js';
import majorRouter from './routes/major.js';
import searchRouter from './routes/search.js';
import ssoRouter from './routes/sso.js';
import evalRouter from './routes/evaluation.js';
import sisRouter from './routes/sisData.js';
import experimentsRouter from './routes/experiments.js';
import commentRouter from './routes/comment.js';
import dotenv from 'dotenv';

dotenv.config();

const app = express();

export default function createApp() {
  const corsOptions = {
    origin: [
      'http://localhost:3000',
      'https://ucredit.herokuapp.com',
      'https://ucredit.me',
      'http://127.0.0.1',
      'https://ucredit-frontend-typescript-local.vercel.app',
    ],
    methods: 'GET,HEAD,PUT,PATCH,POST,DELETE',
    preflightContinue: true,
    optionsSuccessStatus: 204,
    credentials: true,
  };

  //use middleware functions
  app.use(cors(corsOptions));
  app.use(helmet());
  app.use(morgan('dev'));
  app.use(express.json());
  app.use(courseRouter);
  app.use(distributionRouter);
  app.use(yearRouter);
  app.use(planRouter);
  app.use(planReviwerRouter);
  app.use(notificationRouter);
  app.use(ssoRouter);
  app.use(userRouter);
  app.use(majorRouter);
  app.use(searchRouter);
  app.use(evalRouter);
  app.use(sisRouter);
  app.use(experimentsRouter);
  app.use(commentRouter);
  return app;
}