json-schema-ngp-van-error-creator/index.js

Generates NGP VAN API compliant error messages from json schema

var _ = require('lodash');
/**
 * maps a uri returned by JSV to a human readable property name.
 **/
function getPropertyFromUri(uri) {
  function formatArrayIndex(propertyPath) {
    return propertyPath.replace(/\.([0-9]+)\b/, function(match, index) {
      return '['+index+']';
    });
  }

  function getPropertyPath(uri) {
    return uri.match(new RegExp('#/(.+)$'))[1].replace('/', '.');
  }

  return formatArrayIndex(getPropertyPath(uri));
}

function createErrorResponse(errors) {
  return { code: 400,
    errors: _.map(errors, function(error) {
      return {
        properties: [ getPropertyFromUri(error.uri) ],
        text: error.message + ': ' + error.details,
        code: "INVALID_PARAMETER"
      };
    })
  };
}

module.exports = createErrorResponse;