wisesplit/lib/getMongoDBClient.ts

import { Db, MongoClient } from "mongodb";

const USERNAME = process.env.MONGO_USERNAME;
const PASSWORD = process.env.MONGO_PASSWORD;
const HOSTNAME = process.env.MONGO_HOSTNAME;
const DATABASE_NAME = process.env.MONGO_DATABASE_NAME;
const DATABASE_PORT = process.env.MONGO_DATABASE_PORT;

const URI = `mongodb://${USERNAME}:${PASSWORD}@${
  HOSTNAME ?? "localhost"
}:${DATABASE_PORT}`;

let db: Db | null = null;

export const getMongoDBClient = async () => {
  if (db) {
    return db;
  }
  const client = new MongoClient(URI);

  await client.connect();
  db = client.db(DATABASE_NAME);

  return db;
};