#pragma once
#include "Common.h"
#include "InetAddress.h"
#include "Socket.h"

#include <memory>

class TcpStream;
typedef std::unique_ptr<TcpStream> TcpStreamPtr;

// A blocking TCP stream
class TcpStream : noncopyable
{
 public:
  explicit TcpStream(Socket&& sock);  // sock must be connected
  ~TcpStream() = default;
  TcpStream(TcpStream&&) = default;
  // TcpStream& operator=(TcpStream&&) = default;

  static TcpStreamPtr connect(const InetAddress& serverAddr);
  static TcpStreamPtr connect(const InetAddress& serverAddr, const InetAddress& localAddr);

  // NOT thread safe
  int receiveAll(void* buf, int len);  // read len bytes, unless error happens
  int receiveSome(void* buf, int len); // read len or less bytes

  int sendAll(const void* buf, int len);  // send len bytes, unless error happens
  int sendSome(const void* buf, int len); // send len or less bytes

  // thread safe
  InetAddress getLocalAddr() const { return sock_.getLocalAddr(); }
  InetAddress getPeerAddr() const { return sock_.getPeerAddr(); }

  void setTcpNoDelay(bool on);
  void shutdownWrite();

  int fd() { return sock_.fd(); }

 private:
  static TcpStreamPtr connectInternal(const InetAddress& serverAddr, const InetAddress* localAddr);
  Socket sock_;
};