'use strict';

////////////////////////////////////////////////////////////////////////////////
/// @brief AQL query cache management
///
/// @file
///
/// DISCLAIMER
///
/// Copyright 2012 triagens GmbH, Cologne, Germany
///
/// Licensed under the Apache License, Version 2.0 (the "License");
/// you may not use this file except in compliance with the License.
/// You may obtain a copy of the License at
///
///     http://www.apache.org/licenses/LICENSE-2.0
///
/// Unless required by applicable law or agreed to in writing, software
/// distributed under the License is distributed on an "AS IS" BASIS,
/// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
/// See the License for the specific language governing permissions and
/// limitations under the License.
///
/// Copyright holder is triAGENS GmbH, Cologne, Germany
///
/// @author Jan Steemann
/// @author Copyright 2013, triAGENS GmbH, Cologne, Germany
////////////////////////////////////////////////////////////////////////////////

var internal = require("internal");
var arangosh = require("@arangodb/arangosh");


////////////////////////////////////////////////////////////////////////////////
/// @brief clears the query cache
////////////////////////////////////////////////////////////////////////////////

exports.clear = function () {
  var db = internal.db;

  var requestResult = db._connection.DELETE("/_api/query-cache");
  arangosh.checkRequestResult(requestResult);

  return requestResult;
};

////////////////////////////////////////////////////////////////////////////////
/// @brief fetches or sets the query cache properties
////////////////////////////////////////////////////////////////////////////////

exports.properties = function (properties) {
  var db = internal.db;
  var requestResult;

  if (properties !== undefined) {
    requestResult = db._connection.PUT("/_api/query-cache/properties", JSON.stringify(properties));
  }
  else {
    requestResult = db._connection.GET("/_api/query-cache/properties");
  }

  arangosh.checkRequestResult(requestResult);

  return requestResult;
};