////////////////////////////////////////////////////////////////////////////////
/// DISCLAIMER
///
/// Copyright 2017 ArangoDB 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 Manuel Baesler
////////////////////////////////////////////////////////////////////////////////

#ifndef GENERAL_SERVER_AUTHENTICATION_HANDLER_H
#define GENERAL_SERVER_AUTHENTICATION_HANDLER_H 1

#include "Basics/Common.h"
#include "Basics/Result.h"
#include "VocBase/AuthInfo.h"

namespace arangodb {

class AuthResult;
enum class AuthSource;

class AuthenticationResult : public arangodb::Result {
  public:
    explicit AuthenticationResult(AuthSource const& source) : AuthenticationResult(TRI_ERROR_FAILED, source) {}

    AuthenticationResult(int errorNumber, AuthSource const& source) : Result(errorNumber), _authSource(source) {}
    AuthenticationResult(std::unordered_map<std::string, std::string> const& permissions, AuthSource const& source) :
        Result(0),
        _authSource(source),
        _permissions(permissions) {}

    AuthSource source() const { return _authSource; }
    std::unordered_map<std::string, std::string> permissions() const { return _permissions; }

  protected:
    AuthSource _authSource;
    std::unordered_map<std::string, std::string> _permissions;
};


class AuthenticationHandler {
    public:
      virtual AuthenticationResult authenticate(std::string const& username, std::string const& password) = 0;
      virtual ~AuthenticationHandler() {}
};

class DefaultAuthenticationHandler : public AuthenticationHandler {
  public:
    DefaultAuthenticationHandler() {}
    AuthenticationResult authenticate(std::string const& username, std::string const& password) override;
    virtual ~DefaultAuthenticationHandler() {}
};
};

#endif