/**
 * Copyright (c) Facebook, Inc. and its affiliates.
 *
 * This source code is licensed under the MIT license found in the
 * LICENSE file in the root directory of this source tree.
 *
 *  strict-local
 * @format
 */
'use strict';

/**
 * Creates an instance of the `OperationDescriptor` type defined in
 * `RelayStoreTypes` given an operation and some variables. The input variables
 * are filtered to exclude variables that do not match defined arguments on the
 * operation, and default values are populated for null values.
 */
function createOperationDescriptor(request, variables) {
  var operation = request.operation;

  var operationVariables = require("./RelayConcreteVariables").getOperationVariables(operation, variables);

  var dataID = require("./RelayStoreUtils").ROOT_ID;

  return {
    fragment: {
      dataID: dataID,
      node: request.fragment,
      variables: operationVariables
    },
    node: request,
    root: {
      dataID: dataID,
      node: operation,
      variables: operationVariables
    },
    variables: operationVariables
  };
}

module.exports = {
  createOperationDescriptor: createOperationDescriptor
};