36 lines
1.1 KiB
TypeScript
36 lines
1.1 KiB
TypeScript
import Formidable from "formidable";
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import Middleware from "./Middleware";
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import {NextFunction, Request, Response} from "express";
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import {FileError, ValidationBag} from "./db/Validator";
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export default abstract class FileUploadMiddleware extends Middleware {
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protected abstract makeForm(): Formidable;
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protected abstract getDefaultField(): string;
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public async handle(req: Request, res: Response, next: NextFunction): Promise<void> {
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const form = this.makeForm();
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try {
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await new Promise<void>((resolve, reject) => {
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form.parse(req, (err, fields, files) => {
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if (err) {
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reject(err);
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return;
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}
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req.body = fields;
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req.files = files;
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resolve();
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});
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});
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} catch (e) {
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const bag = new ValidationBag();
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const fileError = new FileError(e);
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fileError.thingName = this.getDefaultField();
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bag.addMessage(fileError);
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next(bag);
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return;
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}
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next();
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}
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}
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