gistfile1.txt

const router = express.Router()

async function myValidationResult(req: Request, res: Response, next: NextFunction) {
  const result = validationResult(req)
  
  if (!result.isEmpty()) {
    return res.status(400).json({ errors: result.array() })
}

return next();
}

function validationRules(): any[] {
  return [
    query('api_key', 'api_key is invalid.') <- Adding parameter here, to make api_key like github action secret
      .custom(async (api_key) => {
        const userldapDN = getLDAPDNfromAPIkey(api_key) <- This is our own logic for authentication
        const b = await IsValidAPIKey(api_key, userldapDN)
        
        return new Promise((resolve, reject) => {
          if (b) {
            resolve(b)
          }
          else {
            reject()
          }
        })
      })
  ]
}

router.get('/example-endpoint', validationRules(), myValidationResult, doExampleEndpoint)