/* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8 -*- */
/* camelFolder.h : Abstract class for an email folder */

/* 
 *
 * Author : 
 *  Bertrand Guiheneuf <bertrand@helixcode.com>
 *
 * Copyright 1999, 2000 Helix Code, Inc. (http://www.helixcode.com)
 *
 * This program is free software; you can redistribute it and/or 
 * modify it under the terms of the GNU General Public License as 
 * published by the Free Software Foundation; either version 2 of the
 * License, or (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
 * USA
 */


#ifndef CAMEL_FOLDER_H
#define CAMEL_FOLDER_H 1


#ifdef __cplusplus
extern "C" {
#pragma }
#endif /* __cplusplus }*/

#include <gtk/gtk.h>
#include <time.h>
#include "camel-types.h"

#define CAMEL_FOLDER_TYPE     (camel_folder_get_type ())
#define CAMEL_FOLDER(obj)     (GTK_CHECK_CAST((obj), CAMEL_FOLDER_TYPE, CamelFolder))
#define CAMEL_FOLDER_CLASS(k) (GTK_CHECK_CLASS_CAST ((k), CAMEL_FOLDER_TYPE, CamelFolderClass))
#define CAMEL_IS_FOLDER(o)    (GTK_CHECK_TYPE((o), CAMEL_FOLDER_TYPE))

typedef enum {
	FOLDER_OPEN,
	FOLDER_CLOSE
} CamelFolderState;

typedef enum {
	FOLDER_OPEN_UNKNOWN = 0,   /* folder open mode is unknown */
	FOLDER_OPEN_READ    = 1,   /* folder is read only         */ 
	FOLDER_OPEN_WRITE   = 2,   /* folder is write only        */ 
	FOLDER_OPEN_RW      = 3    /* folder is read/write        */ 
} CamelFolderOpenMode;


typedef void (*CamelFolderAsyncCallback) ();
typedef void (CamelSearchFunc)(CamelFolder *folder, int id, gboolean complete, GList *matches, void *data);

/* these structs from camel-folder-summary.h ... (remove comment after cleanup soon) */
/* TODO: perhaps they should be full-block objects? */
/* FIXME: rename this to something more suitable */
typedef struct {
	gchar *name;
	gint nb_message;	/* ick, these should be renamed to something better */
	gint nb_unread_message;
	gint nb_deleted_message;
} CamelFolderInfo;

/* A tree of message content info structures
   describe the content structure of the message (if it has any) */
typedef struct _CamelMessageContentInfo {
	struct _CamelMessageContentInfo *next;

	struct _CamelMessageContentInfo *childs;
	struct _CamelMessageContentInfo *parent;

	struct _header_content_type *type;
	char *id;
	char *description;
	char *encoding;

	guint32 size;
} CamelMessageContentInfo;

/* TODO: rename this?? */
/* TODO: Make this an object, maybe? */
typedef struct {
	/* public fields */
	gchar *subject;
	gchar *to;
	gchar *from;

	gchar *uid;
	guint32 flags;


	time_t date_sent;
	time_t date_received;

	/* tree of content description */
	CamelMessageContentInfo *content;
} CamelMessageInfo;


struct _CamelFolder
{
	GtkObject parent_object;
	
	CamelFolderOpenMode open_mode;
	CamelFolderState open_state;
	gchar *name;
	gchar *full_name;
	gchar separator;
	CamelStore *parent_store;
	CamelFolder *parent_folder;
	GList *permanent_flags;

	gboolean can_hold_folders:1;
	gboolean can_hold_messages:1;
	gboolean has_summary_capability:1;
	gboolean has_uid_capability:1;
	gboolean has_search_capability:1;
};



typedef struct {
	GtkObjectClass parent_class;
	
	/* Virtual methods */	
	void   (*init) (CamelFolder *folder, CamelStore *parent_store,
			CamelFolder *parent_folder, const gchar *name,
			gchar separator, CamelException *ex);

	void   (*open) (CamelFolder *folder, 
			CamelFolderOpenMode mode, 
			CamelException *ex);
	
	void   (*close) (CamelFolder *folder, 
			 gboolean expunge, 
			 CamelException *ex);

	void   (*open_async) (CamelFolder *folder, 
			      CamelFolderOpenMode mode, 
			      CamelFolderAsyncCallback callback, 
			      gpointer user_data, 
			      CamelException *ex);

	void   (*close_async) (CamelFolder *folder, 
			       gboolean expunge, 
			       CamelFolderAsyncCallback callback, 
			       gpointer user_data, 
			       CamelException *ex);

	const gchar *  (*get_name)  (CamelFolder *folder);

	const gchar *  (*get_full_name)  (CamelFolder *folder);

	gboolean   (*can_hold_folders)   (CamelFolder *folder);

	gboolean   (*can_hold_messages)  (CamelFolder *folder);

	gboolean   (*exists)  (CamelFolder *folder, 
			       CamelException *ex);

	gboolean   (*is_open) (CamelFolder *folder);

	CamelFolder *  (*get_subfolder)  (CamelFolder *folder, 
					  const gchar *folder_name, 
					  CamelException *ex);

	gboolean   (*create)  (CamelFolder *folder,
			       CamelException *ex);

	gboolean   (*delete)  (CamelFolder *folder, 
			       gboolean recurse, 
			       CamelException *ex);
	
	gboolean   (*delete_messages) (CamelFolder *folder, 
				       CamelException *ex);

	CamelFolder *  (*get_parent_folder)   (CamelFolder *folder, 
					       CamelException *ex);

	CamelStore *  (*get_parent_store) (CamelFolder *folder, 
					   CamelException *ex);

	CamelFolderOpenMode (*get_mode)   (CamelFolder *folder, 
					   CamelException *ex);

	GList *  (*list_subfolders)   (CamelFolder *folder, 
				       CamelException *ex);

	GList *  (*expunge)  (CamelFolder *folder, 
			   CamelException *ex);

	gboolean (*has_message_number_capability) (CamelFolder *folder);

	CamelMimeMessage * (*get_message_by_number) (CamelFolder *folder, 
						     gint number, 
						     CamelException *ex);
	
	void (*delete_message_by_number) (CamelFolder *folder, 
					  gint number, 
					  CamelException *ex);
	
	gint   (*get_message_count)   (CamelFolder *folder, 
				       CamelException *ex);

	void (*append_message)  (CamelFolder *folder, 
				 CamelMimeMessage *message, 
				 CamelException *ex);
	
	const GList * (*list_permanent_flags) (CamelFolder *folder, 
					       CamelException *ex);

	void   (*copy_message_to) (CamelFolder *folder, 
				   CamelMimeMessage *message, 
				   CamelFolder *dest_folder, 
				   CamelException *ex);
	
	gboolean (*has_uid_capability) (CamelFolder *folder);

	const gchar * (*get_message_uid)  (CamelFolder *folder, 
					   CamelMimeMessage *message, 
					   CamelException *ex);

	CamelMimeMessage * (*get_message_by_uid)  (CamelFolder *folder, 
						   const gchar *uid, 
						   CamelException *ex);

	void (*delete_message_by_uid)  (CamelFolder *folder, 
					const gchar *uid, 
					CamelException *ex);

	GList * (*get_uid_list)  (CamelFolder *folder, 
				  CamelException *ex);

	gboolean (*has_search_capability) (CamelFolder *folder);

	int (*search_by_expression) (CamelFolder *folder, const char *expression,
				     CamelSearchFunc *func, void *data, CamelException *ex);
	gboolean (*search_complete)(CamelFolder *folder, int searchid, gboolean wait, CamelException *ex);
	void (*search_cancel) (CamelFolder *folder, int searchid, CamelException *ex);

	/* moved the old summary stuff from camel-folder-summary.h here */
	GPtrArray * (*get_subfolder_info) (CamelFolder *, int first, int count);
	GPtrArray * (*get_message_info) (CamelFolder *, int first, int count);

} CamelFolderClass;



/* Standard Gtk function */
GtkType camel_folder_get_type (void);


/* public methods */



CamelFolder *      camel_folder_get_subfolder          (CamelFolder *folder, 
							gchar *folder_name, 
							CamelException *ex);

void               camel_folder_open                   (CamelFolder *folder, 
							CamelFolderOpenMode mode, 
							CamelException *ex);


void               camel_folder_close                  (CamelFolder *folder, 
							gboolean expunge, 
							CamelException *ex);

gboolean           camel_folder_create                 (CamelFolder *folder, 
							CamelException *ex);
CamelFolder *      camel_folder_get_parent_folder      (CamelFolder *folder, 
							CamelException *ex);
CamelStore *       camel_folder_get_parent_store       (CamelFolder *folder, 
							CamelException *ex);
GList *            camel_folder_list_subfolders        (CamelFolder *folder, 
							CamelException *ex);


/* delete operations */
gboolean           camel_folder_delete                 (CamelFolder *folder, 
							gboolean recurse, 
							CamelException *ex);
gboolean           camel_folder_delete_messages        (CamelFolder *folder, 
							CamelException *ex);
GList *            camel_folder_expunge                (CamelFolder *folder, 
							CamelException *ex);


/* folder name operations */
const gchar *      camel_folder_get_name               (CamelFolder *folder);
const gchar *      camel_folder_get_full_name          (CamelFolder *folder);


/* various properties accessors */
gboolean           camel_folder_exists                 (CamelFolder *folder, 
							CamelException *ex);
const GList *      camel_folder_list_permanent_flags   (CamelFolder *folder, 
							CamelException *ex);
CamelFolderOpenMode camel_folder_get_mode              (CamelFolder *folder, 
							CamelException *ex);
gboolean           camel_folder_is_open                (CamelFolder *folder);



/* message manipulation */
void               camel_folder_append_message         (CamelFolder *folder, 
							CamelMimeMessage *message, 
							CamelException *ex);
void               camel_folder_copy_message_to        (CamelFolder *folder, 
							CamelMimeMessage *message, 
							CamelFolder *dest_folder, 
							CamelException *ex);


/* summary related operations */
gboolean           camel_folder_has_summary_capability (CamelFolder *folder);
CamelFolderSummary *camel_folder_get_summary           (CamelFolder *folder, 
							CamelException *ex);


/* number based access operations */
gboolean           camel_folder_has_message_number_capability (CamelFolder *folder);
CamelMimeMessage * camel_folder_get_message_by_number (CamelFolder *folder, 
						       gint number, 
						       CamelException *ex);
void               camel_folder_delete_message_by_number (CamelFolder *folder, 
							  gint number, 
							  CamelException *ex);
gint               camel_folder_get_message_count     (CamelFolder *folder, 
						       CamelException *ex);


/* uid based access operations */
gboolean           camel_folder_has_uid_capability    (CamelFolder *folder);
const gchar *      camel_folder_get_message_uid       (CamelFolder *folder, 
						       CamelMimeMessage *message, 
						       CamelException *ex);
CamelMimeMessage * camel_folder_get_message_by_uid    (CamelFolder *folder, 
						       const gchar *uid, 
						       CamelException *ex);
void               camel_folder_delete_message_by_uid (CamelFolder *folder, 
						       const gchar *uid, 
						       CamelException *ex);
GList *            camel_folder_get_uid_list          (CamelFolder *folder, 
						       CamelException *ex);

/* search api */
gboolean           camel_folder_has_search_capability (CamelFolder *folder);
int 		   camel_folder_search_by_expression(CamelFolder *folder, const char *expression,
						     CamelSearchFunc *func, void *data, CamelException *ex);
gboolean	   camel_folder_search_complete(CamelFolder *folder, int searchid, gboolean wait, CamelException *ex);
void		   camel_folder_search_cancel(CamelFolder *folder, int searchid, CamelException *ex);

/* summary info, from the old camel-folder-summary
   FIXME: rename these slightly? */
GPtrArray *camel_folder_summary_get_subfolder_info (CamelFolder *summary,
						    int first, int count);
GPtrArray *camel_folder_summary_get_message_info (CamelFolder *summary,
						  int first, int count);

#ifdef __cplusplus
}
#endif /* __cplusplus */

#endif /* CAMEL_FOLDER_H */