#ifndef SICSCONN_H
#define SICSCONN_H

#include <stddef.h>
#include <qobject.h>

typedef enum { disconnected, connected, replying } ConnState;

class SicsConnection : public QObject {
  Q_OBJECT
public:
  SicsConnection(QObject *parent);
  ~SicsConnection();
  void setHost(const char *hostport, const char *server);
  void setUser(const char *userpass);
  int command(const char *cmd);
  /* send a command (and connect before, if necessary)
     return values: 1 on success
                   -1 on error (no connection)
                    0 on empty response (should not happen)
     */

  int sendCommand(const char *cmd);
  // send, but do not wait
  
  int getResponse();
  // get beginning of response
  
  int getLine(QString &line);
  /* get answer from command
     the return value is:
     - the number of characters read (excluding line break, but at least 1)
     - 0 when the response is at its end
     - negative on error
  */
  int handleMessages(int tmo);
  /* handle pending messages */
  
  int handleBuffer(int tmo);
  void swallow();
  char *debug;
  ConnState state;
  char *startServer = NULL;
  enum {connect_done, connect_start, connect_wait, connect_login, connect_waitlogin, connect_error} connect_state;

signals:
  void handle(const char *line, bool *done = NULL);
  void reconnected(void);
  void progress(int bytes);

public slots:
  void reconnect(void);
  void disconnect(void);
  int handleBuffer(void);
  
private:
  int sendThis(const char *cmd);
  int fd;
  char *hostport;
  char *userpass;
  char *server;
  int tmo;
  enum {buf_got_line, buf_got_finished, buf_sent_line, buf_got_start,  buf_sent_transact} bufstate;
  int tries_wait_start;
  QString command2send;
  QString bufline;
  QString rdbuffer;
  int rdpos;
  int progressPos;
  long tim;
};

#endif