uploadCardImage.ts

import { NextFunction, Request, Response } from "express";

import CardImage from "../../../models/CardImageSchema";
import File from "../../../models/FileSchema";
import fs from "fs";

/**
 * Upload a new Card background Image
 *
 * @param {Request} req
 * @param {Response} res
 * @param {NextFunction} next
 * @return {*} 200 Status code if uploaded
 */
const uploadCardImage = () => async (
  req: Request,
  res: Response,
  next: NextFunction
) => {
  const oldCardImage = await CardImage.findOne().lean().exec();

  if (oldCardImage) {
    const oldFile = await File.findByIdAndRemove(oldCardImage.imageId)
      .lean()
      .exec();

    fs.unlink(oldFile!.path, (err) => {
      throw err;
    });
  }

  const newFile = new File();
  newFile.originalName = req.file.originalname;
  newFile.uploadDate = new Date();
  newFile.path = req.file.path;
  newFile.mimeType = req.file.mimetype;

  await newFile.save();

  if (oldCardImage) {
    await CardImage.updateOne(
      { _id: oldCardImage?.id },
      { imageId: String(newFile.id) }
    ).exec();
  } else {
    const cardImage = new CardImage();
    cardImage.imageId = String(newFile.id);

    await cardImage.save();
  }

  return res.status(200).send();
};

export default uploadCardImage;