/* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8 -*- */
/*
 *  Authors: Jeffrey Stedfast <fejj@novell.com>
 *
 *  Copyright 2005 Novell, Inc. (www.novell.com)
 *
 *  This program is free software; you can redistribute it and/or modify
 *  it under the terms of the GNU Lesser 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 Lesser General Public License for more details.
 *
 *  You should have received a copy of the GNU Lesser General Public License
 *  along with this program; if not, write to the Free Software
 *  Foundation, Inc., 59 Temple Street #330, Boston, MA 02111-1307, USA.
 *
 */


#ifdef HAVE_CONFIG_H
#include <config.h>
#endif

#include "camel-folder.h"
#include "camel-i18n.h"
#include "camel-offline-folder.h"
#include "camel-offline-store.h"
#include "camel-session.h"


static void camel_offline_store_class_init (CamelOfflineStoreClass *klass);
static void camel_offline_store_init (CamelOfflineStore *store, CamelOfflineStoreClass *klass);
static void camel_offline_store_finalize (CamelObject *object);

static void offline_store_construct (CamelService *service, CamelSession *session,
				     CamelProvider *provider, CamelURL *url,
				     CamelException *ex);


static CamelStoreClass *parent_class = NULL;


CamelType
camel_offline_store_get_type (void)
{
	static CamelType type = 0;
	
	if (!type) {
		type = camel_type_register (CAMEL_STORE_TYPE,
					    "CamelOfflineStore",
					    sizeof (CamelOfflineStore),
					    sizeof (CamelOfflineStoreClass),
					    (CamelObjectClassInitFunc) camel_offline_store_class_init,
					    NULL,
					    (CamelObjectInitFunc) camel_offline_store_init,
					    (CamelObjectFinalizeFunc) camel_offline_store_finalize);
	}
	
	return type;
}


static void
camel_offline_store_class_init (CamelOfflineStoreClass *klass)
{
	parent_class = (CamelStoreClass *) camel_type_get_global_classfuncs (CAMEL_STORE_TYPE);
	
	((CamelServiceClass *) klass)->construct = offline_store_construct;
}

static void
camel_offline_store_init (CamelOfflineStore *store, CamelOfflineStoreClass *klass)
{
	store->state = CAMEL_OFFLINE_STORE_NETWORK_AVAIL;
}

static void
camel_offline_store_finalize (CamelObject *object)
{
	;
}


static void
offline_store_construct (CamelService *service, CamelSession *session,
			  CamelProvider *provider, CamelURL *url,
			  CamelException *ex)
{
	CamelOfflineStore *store = CAMEL_OFFLINE_STORE (service);
	
	CAMEL_SERVICE_CLASS (parent_class)->construct (service, session, provider, url, ex);
	if (camel_exception_is_set (ex))
		return;
	
	store->state = camel_session_is_online (session) ?
		CAMEL_OFFLINE_STORE_NETWORK_AVAIL : CAMEL_OFFLINE_STORE_NETWORK_UNAVAIL;
}


/**
 * camel_offline_store_set_network_state:
 * @store: a #CamelOfflineStore object
 * @state: the network state
 * @ex: a #CamelException
 *
 * Set the network state to either #CAMEL_OFFLINE_STORE_NETWORK_AVAIL
 * or #CAMEL_OFFLINE_STORE_NETWORK_UNAVAIL.
 **/
void
camel_offline_store_set_network_state (CamelOfflineStore *store, int state, CamelException *ex)
{
	CamelException lex;
	CamelService *service = CAMEL_SERVICE (store);
	gboolean network_state = camel_session_get_network_state (service->session);

	if (store->state == state)
		return;
	
	camel_exception_init (&lex);
	if (store->state == CAMEL_OFFLINE_STORE_NETWORK_AVAIL) {
		/* network available -> network unavailable */
		if (network_state) {
			if (((CamelStore *) store)->folders) {
				GPtrArray *folders;
				CamelFolder *folder;
				int i, sync;
				
				sync = camel_url_get_param (((CamelService *) store)->url, "sync_offline") != NULL;
				
				folders = camel_object_bag_list (((CamelStore *) store)->folders);
				for (i = 0; i < folders->len; i++) {
					folder = folders->pdata[i];
					
					if (CAMEL_CHECK_TYPE (folder, CAMEL_OFFLINE_FOLDER_TYPE)
					    && (sync || ((CamelOfflineFolder *) folder)->sync_offline)) {
						camel_offline_folder_downsync ((CamelOfflineFolder *) folder, NULL, &lex);
						camel_exception_clear (&lex);
					}
					
					camel_object_unref (folder);
				}
				
				g_ptr_array_free (folders, TRUE);
			}
			
			camel_store_sync (CAMEL_STORE (store), FALSE, &lex);
			camel_exception_clear (&lex);
		}

		if (!camel_service_disconnect (CAMEL_SERVICE (store), network_state, ex))
			return;
	} else {
		/* network unavailable -> network available */
		if (!camel_service_connect (CAMEL_SERVICE (store), ex))
			return;
	}
	
	store->state = state;
}
