////////////////////////////////////////////////////////////////////////////////
/// DISCLAIMER
///
/// Copyright 2014-2016 ArangoDB GmbH, Cologne, Germany
/// Copyright 2004-2014 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 ArangoDB GmbH, Cologne, Germany
///
/// @author Achim Brandt
////////////////////////////////////////////////////////////////////////////////

#include "RestVersionHandler.h"

#include "Rest/AnyServer.h"
#include "Rest/HttpRequest.h"
#include "Rest/Version.h"

#include <velocypack/Builder.h>
#include <velocypack/velocypack-aliases.h>

using namespace arangodb;

using namespace arangodb::basics;
using namespace arangodb::rest;

////////////////////////////////////////////////////////////////////////////////
/// @brief ArangoDB server
////////////////////////////////////////////////////////////////////////////////

extern AnyServer* ArangoInstance;

RestVersionHandler::RestVersionHandler(HttpRequest* request)
    : RestBaseHandler(request) {}

bool RestVersionHandler::isDirect() const { return true; }

HttpHandler::status_t RestVersionHandler::execute() {
  try {
    VPackBuilder result;
    result.add(VPackValue(VPackValueType::Object));
    result.add("server", VPackValue("arango"));
    result.add("version", VPackValue(TRI_VERSION));

    bool found;
    char const* detailsStr = _request->value("details", found);

    if (found && StringUtils::boolean(detailsStr)) {
      result.add("details", VPackValue(VPackValueType::Object));

      Version::getVPack(result);

      if (ArangoInstance != nullptr) {
        result.add("mode", VPackValue(ArangoInstance->modeString()));
      }
      result.close();
    }
    result.close();
    VPackSlice s = result.slice();
    generateResult(s);
  } catch (...) {
    // Ignore this error
  }
  return status_t(HANDLER_DONE);
}