/**
 * metadata.h: Data structures for metadata handling.
 *
 * Copyright © 2007 Pippijn van Steenhoven / The Ermyth Team
 * Rights to this code are as documented in COPYING.
 *
 * $Id: metadata.h,v 1.10 2007/09/22 14:27:26 pippijn Exp $
 */

#ifndef ACCOUNT_METADATA_H
#define ACCOUNT_METADATA_H

#include <map>
#include <ermyth/callback.h>
#include <util/predicates.h>

struct metadata
{
  typedef std::pair<char const *, metadata *> pair_type;
  typedef std::map<char const *, metadata *, str_lt> map_type;

  enum type
  {
    NULLTYPE,
    MYUSER,
    MYCHAN,
    CHANACS
  };

  char *key;
  char *value;
  bool const is_private;
  
  metadata (char *keyname, char *data, bool const make_private)
  : key (keyname), value (data), is_private (make_private)
  {
  }
    
  ~metadata ()
  {
    free (key);
    free (value);
  }
};

class has_metadata
{
  metadata::type mdtype;

protected:
  struct callbacks
  {
    functor::callback3<has_metadata *, char const * const, char const * const> metadata_change;
  };

  has_metadata (metadata::type type)
  : mdtype (type)
  {
  }

public:
  virtual ~has_metadata ()
  {
    clear_metadata ();
  }

  metadata::map_type mdmap;

  metadata *add_metadata (char const * const name, char const * const value);
  bool del_metadata (char const * const name);
  metadata *find_metadata (char const * const name);
  void clear_metadata (void);

  static callbacks callback;

  bool mdMuOK () { return mdtype == metadata::MYUSER; }
  bool mdMcOK () { return mdtype == metadata::MYCHAN; }
  bool mdCaOK () { return mdtype == metadata::CHANACS; }
};

struct metadata_subscription_t
{
  myuser_t *mu;
  list_t taglist;
};

#endif