// Copyright (c) 2012 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#ifndef CHROME_BROWSER_EXTENSIONS_API_SOCKET_TCP_SOCKET_H_
#define CHROME_BROWSER_EXTENSIONS_API_SOCKET_TCP_SOCKET_H_

#include <string>

#include "chrome/browser/extensions/api/socket/socket.h"

// This looks like it should be forward-declarable, but it does some tricky
// moves that make it easier to just include it.
#include "net/socket/tcp_client_socket.h"
#include "net/socket/tcp_server_socket.h"

namespace net {
class Socket;
}

namespace extensions {

class TCPSocket : public Socket {
 public:
  explicit TCPSocket(const std::string& owner_extension_id);
  TCPSocket(net::TCPClientSocket* tcp_client_socket,
            const std::string& owner_extension_id,
            bool is_connected = false);

  virtual ~TCPSocket();

  virtual void Connect(const std::string& address,
                       int port,
                       const CompletionCallback& callback) OVERRIDE;
  virtual void Disconnect() OVERRIDE;
  virtual int Bind(const std::string& address, int port) OVERRIDE;
  virtual void Read(int count,
                    const ReadCompletionCallback& callback) OVERRIDE;
  virtual void RecvFrom(int count,
                        const RecvFromCompletionCallback& callback) OVERRIDE;
  virtual void SendTo(scoped_refptr<net::IOBuffer> io_buffer,
                      int byte_count,
                      const std::string& address,
                      int port,
                      const CompletionCallback& callback) OVERRIDE;
  virtual bool SetKeepAlive(bool enable, int delay) OVERRIDE;
  virtual bool SetNoDelay(bool no_delay) OVERRIDE;
  virtual int Listen(const std::string& address, int port,
                     int backlog, std::string* error_msg) OVERRIDE;
  virtual void Accept(const AcceptCompletionCallback &callback) OVERRIDE;

  virtual bool GetPeerAddress(net::IPEndPoint* address) OVERRIDE;
  virtual bool GetLocalAddress(net::IPEndPoint* address) OVERRIDE;
  virtual Socket::SocketType GetSocketType() const OVERRIDE;

  static TCPSocket* CreateSocketForTesting(
      net::TCPClientSocket* tcp_client_socket,
      const std::string& owner_extension_id);
  static TCPSocket* CreateServerSocketForTesting(
      net::TCPServerSocket* tcp_server_socket,
      const std::string& owner_extension_id);

 protected:
  virtual int WriteImpl(net::IOBuffer* io_buffer,
                        int io_buffer_size,
                        const net::CompletionCallback& callback) OVERRIDE;

 private:
  void OnConnectComplete(int result);
  void OnReadComplete(scoped_refptr<net::IOBuffer> io_buffer,
                      int result);
  void OnAccept(int result);

  TCPSocket(net::TCPServerSocket* tcp_server_socket,
            const std::string& owner_extension_id);

  scoped_ptr<net::TCPClientSocket> socket_;
  scoped_ptr<net::TCPServerSocket> server_socket_;

  enum SocketMode {
    UNKNOWN = 0,
    CLIENT,
    SERVER,
  };
  SocketMode socket_mode_;

  CompletionCallback connect_callback_;

  ReadCompletionCallback read_callback_;

  scoped_ptr<net::StreamSocket> accept_socket_;
  AcceptCompletionCallback accept_callback_;
};

}  //  namespace extensions

#endif  // CHROME_BROWSER_EXTENSIONS_API_SOCKET_TCP_SOCKET_H_