70 lines
1.7 KiB
JavaScript
70 lines
1.7 KiB
JavaScript
import fs from 'fs'
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import promisesAll from 'promises-all'
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import mkdirp from 'mkdirp'
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import shortid from 'shortid'
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import lowdb from 'lowdb'
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import FileSync from 'lowdb/adapters/FileSync'
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import { GraphQLUpload } from 'apollo-upload-server'
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const uploadDir = './uploads'
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const db = lowdb(new FileSync('db.json'))
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// Seed an empty DB
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db.defaults({ uploads: [] }).write()
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// Ensure upload directory exists
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mkdirp.sync(uploadDir)
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const storeFS = ({ stream, filename }) => {
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const id = shortid.generate()
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const path = `${uploadDir}/${id}-${filename}`
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return new Promise((resolve, reject) =>
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stream
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.on('error', error => {
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if (stream.truncated)
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// Delete the truncated file
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fs.unlinkSync(path)
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reject(error)
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})
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.pipe(fs.createWriteStream(path))
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.on('error', error => reject(error))
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.on('finish', () => resolve({ id, path }))
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)
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}
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const storeDB = file =>
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db
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.get('uploads')
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.push(file)
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.last()
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.write()
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const processUpload = async upload => {
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const { stream, filename, mimetype, encoding } = await upload
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const { id, path } = await storeFS({ stream, filename })
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return storeDB({ id, filename, mimetype, encoding, path })
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}
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export default {
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Upload: GraphQLUpload,
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Query: {
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uploads: () => db.get('uploads').value()
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},
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Mutation: {
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singleUpload: (obj, { file }) => processUpload(file),
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async multipleUpload(obj, { files }) {
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const { resolve, reject } = await promisesAll.all(
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files.map(processUpload)
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)
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if (reject.length)
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reject.forEach(({ name, message }) =>
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// eslint-disable-next-line no-console
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console.error(`${name}: ${message}`)
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)
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return resolve
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}
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}
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}
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