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/* Evolution calendar utilities and types
 *
 * Copyright (C) 2000 Ximian, Inc.
 * Copyright (C) 2000 Ximian, Inc.
 *
 * Author: Federico Mena-Quintero <federico@ximian.com>
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of version 2 of the GNU 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 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 CAL_UTIL_H
#define CAL_UTIL_H

#include <libical/ical.h>
#include <time.h>
#include <glib.h>
#include <cal-util/cal-component.h>
#include <cal-util/cal-recur.h>

G_BEGIN_DECLS



/* Instance of a calendar object.  This can be an actual occurrence, a
 * recurrence, or an alarm trigger of a `real' calendar object.
 */
typedef struct {
    char *uid;          /* UID of the object */
    time_t start;           /* Start time of instance */
    time_t end;         /* End time of instance */
} CalObjInstance;

void cal_obj_instance_list_free (GList *list);

/* Used for multiple UID queries */
typedef enum {
    CALOBJ_TYPE_EVENT   = 1 << 0,
    CALOBJ_TYPE_TODO    = 1 << 1,
    CALOBJ_TYPE_JOURNAL = 1 << 2,
    CALOBJ_TYPE_ANY     = 0x07
} CalObjType;

/* Used for modifying objects */
typedef enum {
    CALOBJ_MOD_THIS          = 1 << 0,
    CALOBJ_MOD_THISANDPRIOR  = 1 << 1,
    CALOBJ_MOD_THISANDFUTURE = 1 << 2,
    CALOBJ_MOD_ALL           = 0x07
} CalObjModType;

/* Used for mode stuff */
typedef enum {
    CAL_MODE_INVALID = -1,
    CAL_MODE_LOCAL   = 1 << 0,
    CAL_MODE_REMOTE  = 1 << 1,
    CAL_MODE_ANY     = 0x07
} CalMode;

void cal_obj_uid_list_free (GList *list);

icalcomponent *cal_util_new_top_level (void);

icalcomponent *cal_util_parse_ics_file (const char *filename);

CalComponentAlarms *cal_util_generate_alarms_for_comp (CalComponent *comp,
                               time_t start,
                               time_t end,
                               CalAlarmAction *omit,
                               CalRecurResolveTimezoneFn resolve_tzid,
                               gpointer user_data,
                               icaltimezone *default_timezone);
int cal_util_generate_alarms_for_list (GList *comps,
                       time_t start,
                       time_t end,
                       CalAlarmAction *omit,
                       GSList **comp_alarms,
                       CalRecurResolveTimezoneFn resolve_tzid,
                       gpointer user_data,
                       icaltimezone *default_timezone);

icaltimezone *cal_util_resolve_tzid (const char *tzid, gpointer data);

char *cal_util_priority_to_string (int priority);
int cal_util_priority_from_string (const char *string);

char *cal_util_expand_uri (char *uri, gboolean tasks);

void cal_util_add_timezones_from_component (icalcomponent *vcal_comp,
                        icalcomponent *icalcomp);

gboolean cal_util_component_is_instance (icalcomponent *icalcomp);
gboolean cal_util_component_has_alarms (icalcomponent *icalcomp);
gboolean cal_util_component_has_organizer (icalcomponent *icalcomp);
gboolean cal_util_component_has_recurrences (icalcomponent *icalcomp);
gboolean cal_util_component_has_rdates (icalcomponent *icalcomp);
gboolean cal_util_component_has_rrules (icalcomponent *icalcomp);

gboolean cal_util_event_dates_match (icalcomponent *icalcomp1, icalcomponent *icalcomp2);

/* The static capabilities to be supported by backends */
#define CAL_STATIC_CAPABILITY_NO_ALARM_REPEAT             "no-alarm-repeat"
#define CAL_STATIC_CAPABILITY_NO_AUDIO_ALARMS             "no-audio-alarms"
#define CAL_STATIC_CAPABILITY_NO_DISPLAY_ALARMS           "no-display-alarms"
#define CAL_STATIC_CAPABILITY_NO_EMAIL_ALARMS             "no-email-alarms"
#define CAL_STATIC_CAPABILITY_NO_PROCEDURE_ALARMS         "no-procedure-alarms"
#define CAL_STATIC_CAPABILITY_NO_TASK_ASSIGNMENT          "no-task-assignment"
#define CAL_STATIC_CAPABILITY_NO_TRANSPARENCY             "no-transparency"
#define CAL_STATIC_CAPABILITY_ONE_ALARM_ONLY              "one-alarm-only"
#define CAL_STATIC_CAPABILITY_ORGANIZER_MUST_ATTEND       "organizer-must-attend"
#define CAL_STATIC_CAPABILITY_ORGANIZER_NOT_EMAIL_ADDRESS "organizer-not-email-address"
#define CAL_STATIC_CAPABILITY_REMOVE_ALARMS               "remove-alarms"
#define CAL_STATIC_CAPABILITY_SAVE_SCHEDULES              "save-schedules"

G_END_DECLS

#endif