// This file is originally from Trantor - callbacks.h

// Copyright (c) 2016-2021, Tao An.  All rights reserved.

// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions
// are met:
//
//   * Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
//   * Redistributions in binary form must reproduce the above copyright
// notice, this list of conditions and the following disclaimer in the
// documentation and/or other materials provided with the distribution.
//   * Neither the name of Tao An nor the names of other contributors
// may be used to endorse or promote products derived from this software
// without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

#pragma once

#include <functional>
#include <memory>

enum class SSLError
{
    kSSLHandshakeError,
    kSSLInvalidCertificate
};
using TimerCallback = std::function<void()>;

// the data has been read to (buf, len)
class TcpConnection;
class MsgBuffer;
using TcpConnectionPtr = std::shared_ptr<TcpConnection>;
// tcp server and connection callback
using RecvMessageCallback =
    std::function<void(const TcpConnectionPtr &, MsgBuffer *)>;
using ConnectionErrorCallback = std::function<void()>;
using ConnectionCallback = std::function<void(const TcpConnectionPtr &)>;
using CloseCallback = std::function<void(const TcpConnectionPtr &)>;
using WriteCompleteCallback = std::function<void(const TcpConnectionPtr &)>;
using HighWaterMarkCallback =
    std::function<void(const TcpConnectionPtr &, const size_t)>;
using SSLErrorCallback = std::function<void(SSLError)>;