forked from swapnil.bendal/TypeScript-Backend-Template
46 lines
2.0 KiB
TypeScript
46 lines
2.0 KiB
TypeScript
import { pick } from '../utils/handler/pick.handler';
|
|
import { Request, Response, NextFunction } from 'express';
|
|
import * as Yup from 'yup';
|
|
import ApiError from '../utils/helper/ApiError';
|
|
|
|
/**
|
|
* Validation middleware for Express routes.
|
|
* @param schema - Validation schema object (Yup schema for request parts like params, query, body, etc.).
|
|
* @returns Middleware function to validate request properties.
|
|
*/
|
|
const validate =
|
|
(schema: Partial<Record<keyof Request, Yup.ObjectSchema<any>>>) =>
|
|
(req: Request, res: Response, next: NextFunction): void => {
|
|
// Define valid request keys explicitly
|
|
const validRequestKeys = ['params', 'query', 'body', 'file', 'files'] as (keyof Request)[];
|
|
|
|
// Extract the schemas for valid parts of the request
|
|
const validSchema = pick(schema, validRequestKeys);
|
|
|
|
// Extract the corresponding request properties
|
|
const object = pick(req, Object.keys(validSchema) as (keyof Request)[]);
|
|
|
|
// Validate each part of the request
|
|
const promises = Object.keys(validSchema).map((key) =>
|
|
validSchema[key as keyof Request]?.validate(object[key as keyof Request], { abortEarly: false })
|
|
);
|
|
|
|
// Process validation results
|
|
Promise.all(promises)
|
|
.then((validatedValues) => {
|
|
// Assign validated values back to the request object
|
|
validatedValues.forEach((value, index) => {
|
|
const key = Object.keys(validSchema)[index];
|
|
(req as any)[key] = value; // Type assertion since req is mutable
|
|
});
|
|
next();
|
|
})
|
|
.catch((err: Yup.ValidationError) => {
|
|
// Collect and format error messages
|
|
const errorMessage = err.inner.map((detail) => detail.message).join(', ');
|
|
next(new ApiError(400, errorMessage));
|
|
});
|
|
};
|
|
|
|
export default validate;
|