#ifndef	_COC_CLIENT_H_
#define	_COC_CLIENT_H_

#include "myc_buf.h"
#include "coc_util.h"

typedef struct {
  void (* func) (char *, void *);
  void *arg;
} OutFunc;

typedef struct {
  void *adr;
  int type, size;
  char *cmd;
} CocArg;

typedef struct {
  int fd;
  /* private */
  int port;
  StrBuf cmdbuf; /* for sending command */
  StrBuf resbuf; /* for response */
  char cmdbuf_[COC_CMD_LEN];
  char resbuf_[COC_RES_LEN];
  CocArg args[16];
  int nargs;
  char host[64];
  char magic[32];
  char startcmd[512];
  char synch;
} CocConn;

int CocInitClient(CocConn *conn, char *host, int port, char *magic, int bufsize, char *startcmd);
/*  initialize a connection to the server process
*/

int CocSendMagic(CocConn *conn, char *magic);
/* send magic word to the server for changing access rights
*/

void CocReset(CocConn *conn);
int CocPutStr(CocConn *conn, const char *name, const char *value);
int CocPutFloat(CocConn *conn, const char *name, float value);
int CocPutInt(CocConn *conn, const char *name, int value);
int CocPutArray(CocConn *conn, const char *name, float *value, int value_size);
int CocGetStr(CocConn *conn, const char *name, char *value, int value_len);
int CocGetFloat(CocConn *conn, const char *name, float *value);
int CocGetInt(CocConn *conn, const char *name, int *value);
int CocGetArray(CocConn *conn, const char *name, float *value, int value_size);
int CocGetOut(CocConn *conn, const char *name, OutFunc *f);
int CocDoIt(CocConn *conn, char *error, int error_len);

int CocCheck(CocConn *conn);
/*
   returns 1, if not yet open
   returns 0, if connection o.k.
   returns -1 (error message), if connection died
*/

int CocWatchLog(CocConn *conn, char *list);
/*
  Watch indefinitely for log messages
*/

int CocSet(CocConn *conn, const char *name, const char *value);
/*
   set one variable
*/

int CocGetN(CocConn *conn, const char *name, char *value, int reslen);
#define CocGet(C,N,V) CocGetN(C,N,V,sizeof(V))
/*
   read one variable. Use the macro if value is a fixed length array
*/

int CocSetGetN(CocConn *conn, const char *name, const char *cmd, char *value, int reslen);
#define CocSetGet(C,N,S,V) CocSetGetN(C,N,S,V,sizeof(V))
/*
   set and get a variable. Use the macro if value is a fixed length array
*/

void CocCloseClient(CocConn *conn);
/*
   close the connection to the server
*/

#endif /* _COC_CLIENT_H_ */