@uploadx/core/lib/handlers/multipart.js

Node.js resumable upload middleware

"use strict";
var __importDefault = (this && this.__importDefault) || function (mod) {
    return (mod && mod.__esModule) ? mod : { "default": mod };
};
Object.defineProperty(exports, "__esModule", { value: true });
exports.Multipart = void 0;
exports.multipart = multipart;
const multiparty_1 = __importDefault(require("multiparty"));
const utils_1 = require("../utils");
const base_handler_1 = require("./base-handler");
class Multipart extends base_handler_1.BaseHandler {
    async post(req, res) {
        return new Promise((resolve, reject) => {
            const form = new multiparty_1.default.Form();
            const config = { metadata: {} };
            form.on('field', (key, value) => {
                Object.assign(config.metadata, key === 'metadata' ? JSON.parse(value) : { [key]: value });
            });
            form.on('error', error => reject(error));
            form.on('part', (part) => {
                config.size = part.byteCount;
                config.originalName = part.filename;
                config.contentType = part.headers['content-type'];
                config.userId = this.getUserId(req, res);
                part.on('error', _ => null);
                this.storage
                    .create(req, config)
                    .then(({ id }) => this.storage.write({ start: 0, contentLength: part.byteCount, body: part, id }))
                    .then(file => {
                    if (file.status === 'completed') {
                        const headers = { Location: this.buildFileUrl(req, file) };
                        (0, utils_1.setHeaders)(res, headers);
                    }
                    return resolve(file);
                })
                    .catch(err => reject(err));
            });
            form.parse(req);
        });
    }
    /**
     * Delete upload
     */
    async delete(req, res) {
        const id = await this.getAndVerifyId(req, res);
        const [file] = await this.storage.delete({ id });
        this.send(res, { statusCode: 204 });
        return file;
    }
}
exports.Multipart = Multipart;
/**
 * Basic express wrapper
 * @example
 * ```ts
 * app.use('/files', multipart({directory: '/tmp', maxUploadSize: '250GB'}));
 * ```
 */
function multipart(options = {}) {
    return new Multipart(options).handle;
}
/**
 * Express wrapper
 *
 * - express ***should*** respond to the client when the upload complete and handle errors and GET requests
 * @example
 * ```ts
 * app.use('/files', multipart.upload({ storage }), (req, res, next) => {
 *   if (req.method === 'GET') return res.sendStatus(404);
 *   console.log('File upload complete: ', req.body.name);
 *   return res.sendStatus(200);
 * });
 * ```
 */
multipart.upload = (options = {}) => new Multipart(options).upload;