comty/packages/server/services/files/routes/upload/file/post.js

import path from "node:path"
import fs from "node:fs"

import Upload from "@shared-classes/Upload"

export default {
	useContext: ["cache"],
	middlewares: ["withAuthentication"],
	fn: async (req, res) => {
		const workPath = path.resolve(
			this.default.contexts.cache.constructor.cachePath,
			`${req.auth.session.user_id}-${nanoid()}`,
		)

		await fs.promises.mkdir(workPath, { recursive: true })

		let localFilepath = null

		await req.multipart(async (field) => {
			if (!field.file) {
				throw new OperationError(400, "Missing file")
			}

			localFilepath = path.join(workPath, "file")

			await field.write(localFilepath)
		})

		let transformations = req.headers["transformations"]

		if (transformations) {
			transformations = transformations.split(",").map((t) => t.trim())
		}

		const result = await Upload.fileHandle({
			user_id: req.auth.session.user_id,
			filePath: localFilepath,
			workPath: workPath,
			transformations: transformations,
		})

		return result
	},
}