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/*
* 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) version 3.
*
* 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 the program; if not, see <http://www.gnu.org/licenses/>
*
*
* Authors:
* David Trowbridge <trowbrds@cs.colorado.edu>
*
* Copyright (C) 1999-2008 Novell, Inc. (www.novell.com)
*
*/
#include <string.h>
#include <gconf/gconf-client.h>
#include <libedataserver/e-source.h>
#include <libedataserver/e-source-list.h>
#include <libecal/e-cal.h>
#include <libecal/e-cal-util.h>
#include <calendar/common/authentication.h>
#include "publish-format-ical.h"
typedef struct {
GHashTable *zones;
ECal *ecal;
} CompTzData;
static void
insert_tz_comps (icalparameter *param, void *cb_data)
{
const char *tzid;
CompTzData *tdata = cb_data;
icaltimezone *zone = NULL;
icalcomponent *tzcomp;
GError *error = NULL;
tzid = icalparameter_get_tzid (param);
if (g_hash_table_lookup (tdata->zones, tzid))
return;
if (!e_cal_get_timezone (tdata->ecal, tzid, &zone, &error)) {
g_warning ("Could not get the timezone information for %s : %s \n", tzid, error->message);
g_error_free (error);
return;
}
tzcomp = icalcomponent_new_clone (icaltimezone_get_component (zone));
g_hash_table_insert (tdata->zones, (gpointer) tzid, (gpointer) tzcomp);
}
static void
append_tz_to_comp (gpointer key, gpointer value, icalcomponent *toplevel)
{
icalcomponent_add_component (toplevel, (icalcomponent *) value);
}
static gboolean
write_calendar (gchar *uid, ESourceList *source_list, GOutputStream *stream)
{
ESource *source;
ECal *client = NULL;
GError *error = NULL;
GList *objects;
icalcomponent *top_level;
gboolean res = FALSE;
source = e_source_list_peek_source_by_uid (source_list, uid);
if (source)
client = auth_new_cal_from_source (source, E_CAL_SOURCE_TYPE_EVENT);
if (!client) {
g_warning (G_STRLOC ": Could not publish calendar: Calendar backend no longer exists");
return FALSE;
}
if (!e_cal_open (client, TRUE, &error)) {
if (error) {
g_warning ("%s", error->message);
g_error_free (error);
}
g_object_unref (client);
return FALSE;
}
top_level = e_cal_util_new_top_level ();
error = NULL;
if (e_cal_get_object_list (client, "#t", &objects, &error)) {
char *ical_string;
CompTzData tdata;
tdata.zones = g_hash_table_new (g_str_hash, g_str_equal);
tdata.ecal = client;
while (objects) {
icalcomponent *icalcomp = objects->data;
icalcomponent_foreach_tzid (icalcomp, insert_tz_comps, &tdata);
icalcomponent_add_component (top_level, icalcomp);
objects = g_list_remove (objects, icalcomp);
}
g_hash_table_foreach (tdata.zones, (GHFunc) append_tz_to_comp, top_level);
g_hash_table_destroy (tdata.zones);
tdata.zones = NULL;
ical_string = icalcomponent_as_ical_string_r (top_level);
res = g_output_stream_write_all (stream, ical_string, strlen (ical_string), NULL, NULL, &error);
g_free (ical_string);
}
g_object_unref (client);
if (error) {
g_warning ("%s", error->message);
g_error_free (error);
}
return res;
}
void
publish_calendar_as_ical (GOutputStream *stream, EPublishUri *uri)
{
GSList *l;
ESourceList *source_list;
GConfClient *gconf_client;
gconf_client = gconf_client_get_default ();
/* events */
source_list = e_source_list_new_for_gconf (gconf_client, "/apps/evolution/calendar/sources");
l = uri->events;
while (l) {
gchar *uid = l->data;
if (!write_calendar (uid, source_list, stream))
break;
l = g_slist_next (l);
}
g_object_unref (source_list);
g_object_unref (gconf_client);
}
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