Create index.js

index.js

@@ -0,0 +1,42 @@
+import fs from 'fs'
+import bytes from 'bytes'
+import express from 'express'
+import { fileTypeFromBuffer } from 'file-type'
+
+const app = express()
+	.set('json spaces', 4)
+	.use(express.json({ limit: '500mb' }))
+	.use(express.urlencoded({ extended: true, limit: '500mb' }))
+	.all('/', (_, res) => res.send('POST /upload'))
+	.use('/file', express.static('/tmp'))
+	.all('/upload', async (req, res) => {
+		if (req.method !== 'POST') return res.json({ message: 'Method not allowed' })
+		
+		const { file } = req.body
+		if (!file && typeof file !== 'string' && !isBase64(file))
+			return res.json({ message: 'Payload body file must be filled in base64 format' })
+		
+		const fileBuffer = Buffer.from(file, 'base64')
+		const ftype = await fileTypeFromBuffer(fileBuffer) || { mime: 'file', ext: 'bin' }
+		const fileName = `${ftype.mime.split('/')[0]}-${Math.random().toString(36).slice(2)}.${ftype.ext}`
+		await fs.promises.writeFile(`/tmp/${fileName}`, fileBuffer)
+		
+		res.json({
+			name: fileName,
+			size: {
+				bytes: fileBuffer.length,
+				readable: bytes(+fileBuffer.length, { unitSeparator: ' ' })
+			},
+			type: ftype,
+			url: `https://${process.env.SPACE_HOST}/file/${fileName}`
+		})
+	})
+	.listen(7860, () => console.log('App running\n', app))
+
+function isBase64(str) {
+	try {
+		return btoa(atob(str)) === str
+	} catch {
+		return false
+	}
+}