import _compact from 'lodash/compact';
import _isNil from 'lodash/isNil';

const topRoutesDisplayOrder = query => _compact([
  "namespace",
  "toResource",
  _isNil(query.to_type) ? null : "toNamespace",
]);


const tapDisplayOrder = query => _compact([
  _isNil(query.resource) ? null : query.resource.indexOf("namespace") === 0 ? null : "namespace",
  "toResource",
  _isNil(query.toResource) ? null : query.toResource.indexOf("namespace") === 0 ? null : "toNamespace",
  "method",
  "path",
  "scheme",
  "authority",
  "maxRps"
]);

export const displayOrder = (cmd, query) => {
  if (cmd === "tap" || cmd === "top") {
    return tapDisplayOrder(query);
  }
  if (cmd === "routes") {
    return topRoutesDisplayOrder(query);
  }
  return [];
};