lux-framework/src/packages/router/route/params/parameter/utils/validate-value.js

Build scalable, Node.js-powered REST APIs with almost no code.

// @flow
import isNull from '../../../../../../utils/is-null';
import { ParameterValueError, ResourceMismatchError } from '../../errors';
import type Parameter from '../index';

/**
 * @private
 */
function validateOne<V>(param: Parameter, value: V): V {
  if (!param.required && isNull(value)) {
    return value;
  }

  if (!param.has(value)) {
    let expected;

    switch (param.path) {
      case 'data.type':
        [expected] = Array.from(param.values());
        throw new ResourceMismatchError(param.path, expected, value);

      default:
        throw new ParameterValueError(param, value);
    }
  }

  return value;
}

/**
 * @private
 */
export default function validateValue<V>(param: Parameter, value: V): V {
  if (Array.isArray(value)) {
    if (param.sanitize) {
      return value.filter(item => param.has(item));
    }

    for (const item of value) {
      validateOne(param, item);
    }
  } else {
    validateOne(param, value);
  }

  return value;
}