Iris SDK upload via Node.js Express and Multer extension

app.ts

import express, { Application, Request, Response } from 'express';
import cors from 'cors';
import multer from "multer";
import fs from "fs";
import Irys from '@irys/sdk';

import { env } from '@/env';

const app: Application = express();
const upload = multer({ dest: './uploads' })

app.use(cors());
app.use(express.json({ limit: '305mb' }));
app.get('/health', (_req: Request, res: Response) => {
  res.send('OK');
});
app.post('/upload', upload.single('file'), async (req: Request, res: Response) => {
  const file = req.file;

  if (!file) {
    res.status(403).send('No file uploaded.');
    return;
  }

  try {
    const irys = new Irys({
      network: "mainnet", // "mainnet" || "devnet"
      token: "aptos",
      key: env.PRIVATE_KEY_STRING
    });

    const fileStream = fs.createReadStream(file.path);
    const price = await irys.getPrice(file.size);
    console.log(`Uploading Image to Arweave: ${file.path} - Size: ${file.size} - Price: ${price}`);

    await irys.fund(price);

    const receipt = await irys.upload(fileStream, {
      tags:  [{ name: "Content-Type", value: file.mimetype }],
    });

    const imgUri = `https://arweave.net/${receipt.id}`
    console.log(`Image URI: ${imgUri}`);
    res.send(imgUri);
  } catch (e) {
    console.error(e);
    res.status(500).send(e instanceof Error ? `Error: ${e.message}` : 'Something went wrong');
  } finally {
    try {
      fs.promises.unlink(file.path);
    } catch (err) {
      console.error(`Error while deleting the file: ${err}`);
    }
  }

  res.end();
});

app.listen(env.PORT, function () {
  console.log(`Sketch API is listening on port ${env.PORT}`);
});