bun's profile pic compress and storage it

index.ts

import { Hono } from 'hono'
import sharp from 'sharp'
import { mkdir } from 'fs/promises'
import { join } from 'path'
import { randomUUID } from 'crypto'

const app = new Hono()
const UPLOAD_DIR = 'uploads'

await mkdir(UPLOAD_DIR, { recursive: true })

app.post('/compress', async (c) => {
  const body = await c.req.parseBody()
  const file = body['image']
  
  if (!file || !(file instanceof File)) {
    return c.json({ error: 'No image provided' }, 400)
  }

  const buffer = await file.arrayBuffer()
  const compressed = await sharp(buffer)
    .resize(512, 512, { fit: 'cover' })
    .webp({ quality: 85 })
    .toBuffer()

  const filename = `${randomUUID()}.webp`
  await Bun.write(join(UPLOAD_DIR, filename), compressed)

  return c.json({ filename })
})

app.get('/image/:filename', async (c) => {
  const filename = c.req.param('filename')
  const filepath = join(UPLOAD_DIR, filename)
  
  try {
    const image = await Bun.file(filepath).arrayBuffer()
    return new Response(image, {
      headers: { 'Content-Type': 'image/webp' }
    })
  } catch {
    return c.json({ error: 'Image not found' }, 404)
  }
})

app.get('/', (c) => {
  return c.text('Usage: POST /compress to compress an image and GET /image/:filename to receive the image')
})

export default app