/**
 * Copyright 2013-2015, Facebook, Inc.
 * All rights reserved.
 *
 * This source code is licensed under the BSD-style license found in the
 * LICENSE file in the root directory of this source tree. An additional grant
 * of patent rights can be found in the PATENTS file in the same directory.
 *
 * @providesModule fromGraphQL
 * 
 */

'use strict';

var RelayQuery = require('./RelayQuery');
var RelayMetaRoute = require('./RelayMetaRoute');

var invariant = require('fbjs/lib/invariant');

/**
 * @internal
 *
 * Converts GraphQL nodes to RelayQuery nodes.
 */
var fromGraphQL = {
  Field: (function (_Field) {
    function Field(_x) {
      return _Field.apply(this, arguments);
    }

    Field.toString = function () {
      return _Field.toString();
    };

    return Field;
  })(function (query) {
    var node = createNode(query, RelayQuery.Field);
    !(node instanceof RelayQuery.Field) ? process.env.NODE_ENV !== 'production' ? invariant(false, 'fromGraphQL.Field(): Expected a GraphQL field node.') : invariant(false) : undefined;
    return node;
  }),
  Fragment: (function (_Fragment) {
    function Fragment(_x2) {
      return _Fragment.apply(this, arguments);
    }

    Fragment.toString = function () {
      return _Fragment.toString();
    };

    return Fragment;
  })(function (query) {
    var node = createNode(query, RelayQuery.Fragment);
    !(node instanceof RelayQuery.Fragment) ? process.env.NODE_ENV !== 'production' ? invariant(false, 'fromGraphQL.Field(): Expected a GraphQL fragment node.') : invariant(false) : undefined;
    return node;
  }),
  Query: function Query(query) {
    var node = createNode(query, RelayQuery.Root);
    !(node instanceof RelayQuery.Root) ? process.env.NODE_ENV !== 'production' ? invariant(false, 'fromGraphQL.Operation(): Expected a root node.') : invariant(false) : undefined;
    return node;
  },
  Operation: (function (_Operation) {
    function Operation(_x3) {
      return _Operation.apply(this, arguments);
    }

    Operation.toString = function () {
      return _Operation.toString();
    };

    return Operation;
  })(function (query) {
    var node = createNode(query, RelayQuery.Operation);
    !(node instanceof RelayQuery.Operation) ? process.env.NODE_ENV !== 'production' ? invariant(false, 'fromGraphQL.Operation(): Expected a mutation/subscription node.') : invariant(false) : undefined;
    return node;
  })
};

function createNode(query, desiredType) {
  var variables = {};
  var route = RelayMetaRoute.get('$fromGraphQL');
  return desiredType.create(query, route, variables);
}

module.exports = fromGraphQL;