#ifndef MAILBOARD_H
#define MAILBOARD_H 1

#include <stdio.h>
#include <set>
#include <list>

#include "Object.h"
#include "MudObject.h"

//! a message, containing a data field and any number of headers.
class Message : public map<string, string> {
 public:
  string data;
  const char *header(const char *n) const;
  void show(MudObject *who);
};


//! a file containing a list of messages in order.
class MessageFile {
  //! the actual messages
  list<Message> msg;

  //! the maximum id no that has ever been used for this file
  int maxid;

  //! the property that seen info for this is kept in
  string prop;

  //! the directory this is kept in
  string m_dir;
  
  //! the filename this is kept in
  string m_file;
  
  //! obtain the property
  const char *propname() { return prop.c_str(); }

  //! get the set of seen messages from /who/
  set<int> get_seen(MudObject *who, int min=0);

  //! set the set of seen message on /who/
  void set_seen(MudObject *who, const set<int> &s);

  //! flush the contents of this to the file.
  void output();

public:  
  //! load the file
  MessageFile(const char *dir, const char *file);

  //! obtain message with index /idx/
  const Message *get(int idx);

  //! obtain the count of messages.
  int count_messages();

  //! obtain the count of news messages as seen by /who/
  int count_new(MudObject *who);

  //! convert a transient (current) index to a permanent id
  int index2id(int);

  //! obtain a transient (current) index from a permanent id
  int id2index(int);

  //! show an index of this to /who/.
  void list_contents(MudObject *who, const char *cmd, set<int> *td=0);

  //! show message /which/ to /who/
  bool show_message(MudObject *who, int which);

  //! send given message.
  void send_message(const char *name,
		    const char *owner,
		    const char *subject,
		    const char *date,
		    const char *data);

  //! delete message with given index.
  void delete_message(int);

  //! obtain the header /b/ from /which/
  const char *get_header(int which, const char *b);
};

//! send a mail
const char *sendmail(const char *to, const char *from, const char *subject, const char*date, const char *data);

#endif