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| 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 | 2x 2x 2x 2x 2x 2x 2x 4x 2x 55x 27x 4x 23x 23x 2x 4x 2x | // src/middleware/fileUpload.middleware.ts
import { Request, Response, NextFunction } from 'express';
import { ValidationError } from '../services/db/errors.db';
/**
* Middleware to check if a file was uploaded by multer.
* @param fieldName The expected field name of the uploaded file.
*/
export const requireFileUpload =
(fieldName: string) => (req: Request, res: Response, next: NextFunction) => {
if (!req.file || req.file.fieldname !== fieldName) {
// Use ValidationError for consistency with ADR-003.
// The errorHandler will format this into a 400 response with a structured error.
const validationIssue = {
path: ['file', fieldName],
message: `A file for the '${fieldName}' field is required.`,
};
return next(new ValidationError([validationIssue]));
}
next();
};
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