index.js

require("dotenv").config();
const cors = require("cors");
const express = require("express");
const paginate = require("express-paginate");
const passport = require("passport");
const { connect } = require("mongoose");
const swaggerUi = require("swagger-ui-express");
const swaggerFile = require("./swagger_output.json");

const app = express();
const router = require("./routes/index");

app.use(cors());
app.use(express.urlencoded({ extended: false }));
app.use(express.json());
app.use(passport.initialize());
require("./middleware/passport-middleware")(passport);

app.use(paginate.middleware(process.env.LIMIT, process.env.MAX_LIMIT));
app.use(router);
app.use("/doc", swaggerUi.serve, swaggerUi.setup(swaggerFile));

const runApp = async () => {
    try {
        await connect(process.env.MONGO_DB, {
            useFindAndModify: false,
            useUnifiedTopology: true,
            useNewUrlParser: true,
            useCreateIndex: true,
        });
        console.log(`Successfully connected to database ${process.env.MONGO_DB}`);
        app.listen(process.env.PORT, () => {
            console.log(`Server started successfully on PORT ${process.env.PORT}`);
        })
    } catch(err) {
        console.log(err);
        runApp();
    }
};

runApp();