/*
 * Evolution calendar - Send calendar component dialog
 *
 * 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.
 *
 * 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 Lesser General Public License
 * along with this program; if not, see <http://www.gnu.org/licenses/>.
 *
 *
 * Authors:
 *		JP Rosevear <jpr@ximian.com>
 *
 * Copyright (C) 1999-2008 Novell, Inc. (www.novell.com)
 *
 */

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

#include "cancel-comp.h"

#include <gtk/gtk.h>
#include <glib/gi18n.h>

#include "e-util/e-util.h"

/* is_past_event:
 *
 * returns TRUE if @comp is in the past, FALSE otherwise.
 * Comparision is based only on date part, time part is ignored.
 */
static gboolean
is_past_event (ECalComponent *comp)
{
	ECalComponentDateTime end_date;
	gboolean res;

	if (!comp) return TRUE;

	e_cal_component_get_dtend (comp, &end_date);
	res = icaltime_compare_date_only (
		*end_date.value,
		icaltime_current_time_with_zone (
		icaltime_get_timezone (*end_date.value))) == -1;
	e_cal_component_free_datetime (&end_date);

	return res;
}

/**
 * cancel_component_dialog:
 *
 * Pops up a dialog box asking the user whether he wants to send a
 * cancel and delete an iTip/iMip message
 *
 * Return value: TRUE if the user clicked Yes, FALSE otherwise.
 **/
gboolean
cancel_component_dialog (GtkWindow *parent,
                         ECalClient *cal_client,
                         ECalComponent *comp,
                         gboolean deleting)
{
	ECalComponentVType vtype;
	const gchar *id;

	if (deleting && e_cal_client_check_save_schedules (cal_client))
		return TRUE;

	vtype = e_cal_component_get_vtype (comp);

	switch (vtype) {
	case E_CAL_COMPONENT_EVENT:
		if (is_past_event (comp)) {
			/* don't ask neither send notification to others on past events */
			return FALSE;
		}
		if (deleting)
			id = "calendar:prompt-cancel-meeting";
		else
			id = "calendar:prompt-delete-meeting";
		break;

	case E_CAL_COMPONENT_TODO:
		if (deleting)
			id = "calendar:prompt-cancel-task";
		else
			id = "calendar:prompt-delete-task";
		break;

	case E_CAL_COMPONENT_JOURNAL:
		if (deleting)
			id = "calendar:prompt-cancel-memo";
		else
			id = "calendar:prompt-delete-memo";
		break;

	default:
		g_message (G_STRLOC ": Cannot handle object of type %d", vtype);
		return FALSE;
	}

	if (e_alert_run_dialog_for_args (parent, id, NULL) == GTK_RESPONSE_YES)
		return TRUE;
	else
		return FALSE;
}