/* Evolution calendar - iCalendar component object
 *
 * Copyright (C) 1999-2008 Novell, Inc. (www.novell.com)
 *
 * Author: Federico Mena-Quintero <federico@ximian.com>
 *
 * This library 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 library 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/>.
 */

#if !defined (__LIBECAL_H_INSIDE__) && !defined (LIBECAL_COMPILATION)
#error "Only <libecal/libecal.h> should be included directly."
#endif

#ifndef E_CAL_COMPONENT_H
#define E_CAL_COMPONENT_H

#include <time.h>
#include <glib-object.h>
#include <libical/ical.h>

/* Standard GObject macros */
#define E_TYPE_CAL_COMPONENT \
	(e_cal_component_get_type ())
#define E_CAL_COMPONENT(obj) \
	(G_TYPE_CHECK_INSTANCE_CAST \
	((obj), E_TYPE_CAL_COMPONENT, ECalComponent))
#define E_CAL_COMPONENT_CLASS(cls) \
	(G_TYPE_CHECK_CLASS_CAST \
	((cls), E_TYPE_CAL_COMPONENT, ECalComponentClass))
#define E_IS_CAL_COMPONENT(obj) \
	(G_TYPE_CHECK_INSTANCE_TYPE \
	((obj), E_TYPE_CAL_COMPONENT))
#define E_IS_CAL_COMPONENT_CLASS(cls) \
	(G_TYPE_CHECK_CLASS_TYPE \
	((cls), E_TYPE_CAL_COMPONENT))
#define E_CAL_COMPONENT_GET_CLASS(obj) \
	(G_TYPE_INSTANCE_GET_CLASS \
	((obj), E_TYPE_CAL_COMPONENT, ECalComponentClass))

G_BEGIN_DECLS

typedef struct {
	gchar *uid;
	gchar *rid;
} ECalComponentId;

/* Types of calendar components to be stored by a ECalComponent, as per RFC 2445.
 * We don't put the alarm component type here since we store alarms as separate
 * structures inside the other "real" components.
 */
typedef enum {
	E_CAL_COMPONENT_NO_TYPE,
	E_CAL_COMPONENT_EVENT,
	E_CAL_COMPONENT_TODO,
	E_CAL_COMPONENT_JOURNAL,
	E_CAL_COMPONENT_FREEBUSY,
	E_CAL_COMPONENT_TIMEZONE
} ECalComponentVType;

/* Field identifiers for a calendar component; these are used by the data model
 * for ETable.
 *
 * NOTE: These are also used in the ETable specification, and the column
 *       numbers are saved in the user settings file. So don't reorder them!
 */
typedef enum {
	E_CAL_COMPONENT_FIELD_CATEGORIES,	/* concatenation of categories */
	E_CAL_COMPONENT_FIELD_CLASSIFICATION,
	E_CAL_COMPONENT_FIELD_COMPLETED,
	E_CAL_COMPONENT_FIELD_DTEND,
	E_CAL_COMPONENT_FIELD_DTSTART,
	E_CAL_COMPONENT_FIELD_DUE,
	E_CAL_COMPONENT_FIELD_GEO,
	E_CAL_COMPONENT_FIELD_PERCENT,
	E_CAL_COMPONENT_FIELD_PRIORITY,
	E_CAL_COMPONENT_FIELD_SUMMARY,
	E_CAL_COMPONENT_FIELD_TRANSPARENCY,
	E_CAL_COMPONENT_FIELD_URL,
	E_CAL_COMPONENT_FIELD_HAS_ALARMS,	/* not a real field */
	E_CAL_COMPONENT_FIELD_ICON,		/* not a real field */
	E_CAL_COMPONENT_FIELD_COMPLETE,		/* not a real field */
	E_CAL_COMPONENT_FIELD_RECURRING,	/* not a real field */
	E_CAL_COMPONENT_FIELD_OVERDUE,		/* not a real field */
	E_CAL_COMPONENT_FIELD_COLOR,		/* not a real field */
	E_CAL_COMPONENT_FIELD_STATUS,
	E_CAL_COMPONENT_FIELD_COMPONENT,	/* not a real field */
	E_CAL_COMPONENT_FIELD_LOCATION,
	E_CAL_COMPONENT_FIELD_NUM_FIELDS
} ECalComponentField;

/* Structures and enumerations to return properties and their parameters */

/* CLASSIFICATION property */
typedef enum {
	E_CAL_COMPONENT_CLASS_NONE,
	E_CAL_COMPONENT_CLASS_PUBLIC,
	E_CAL_COMPONENT_CLASS_PRIVATE,
	E_CAL_COMPONENT_CLASS_CONFIDENTIAL,
	E_CAL_COMPONENT_CLASS_UNKNOWN
} ECalComponentClassification;

/* Properties that have time and timezone information */
typedef struct {
	/* Actual date/time value */
	struct icaltimetype *value;

	/* Timezone ID */
	const gchar *tzid;
} ECalComponentDateTime;

/* Way in which a period of time is specified */
typedef enum {
	E_CAL_COMPONENT_PERIOD_DATETIME,
	E_CAL_COMPONENT_PERIOD_DURATION
} ECalComponentPeriodType;

/* Period of time, can have explicit start/end times or start/duration instead */
typedef struct {
	ECalComponentPeriodType type;

	struct icaltimetype start;

	union {
		struct icaltimetype end;
		struct icaldurationtype duration;
	} u;
} ECalComponentPeriod;

/* The type of range */
typedef enum {
	E_CAL_COMPONENT_RANGE_SINGLE,
	E_CAL_COMPONENT_RANGE_THISPRIOR,
	E_CAL_COMPONENT_RANGE_THISFUTURE
} ECalComponentRangeType;

typedef struct {
	ECalComponentRangeType type;

	ECalComponentDateTime datetime;
} ECalComponentRange;

/* Text properties */
typedef struct {
	/* Description string */
	const gchar *value;

	/* Alternate representation URI */
	const gchar *altrep;
} ECalComponentText;

/* Time transparency */
typedef enum {
	E_CAL_COMPONENT_TRANSP_NONE,
	E_CAL_COMPONENT_TRANSP_TRANSPARENT,
	E_CAL_COMPONENT_TRANSP_OPAQUE,
	E_CAL_COMPONENT_TRANSP_UNKNOWN
} ECalComponentTransparency;

/* Organizer & Attendee */
typedef struct {
	const gchar *value;

	const gchar *member;
	icalparameter_cutype cutype;
	icalparameter_role role;
	icalparameter_partstat status;
	gboolean rsvp;

	const gchar *delto;
	const gchar *delfrom;
	const gchar *sentby;
	const gchar *cn;
	const gchar *language;
} ECalComponentAttendee;

typedef struct {
	const gchar *value;
	const gchar *sentby;
	const gchar *cn;
	const gchar *language;
} ECalComponentOrganizer;

/* Main calendar component object */

typedef struct _ECalComponent ECalComponent;
typedef struct _ECalComponentClass ECalComponentClass;
typedef struct _ECalComponentPrivate ECalComponentPrivate;

struct _ECalComponent {
	GObject parent;
	ECalComponentPrivate *priv;
};

struct _ECalComponentClass {
	GObjectClass parent_class;
};

/* Calendar component */

GType		e_cal_component_get_type	(void);

gchar *		e_cal_component_gen_uid		(void);

ECalComponent *	e_cal_component_new		(void);
ECalComponent *	e_cal_component_new_from_string	(const gchar *calobj);
ECalComponent *	e_cal_component_new_from_icalcomponent
						(icalcomponent *icalcomp);

ECalComponent *	e_cal_component_clone		(ECalComponent *comp);

void		e_cal_component_set_new_vtype	(ECalComponent *comp,
						 ECalComponentVType type);

icalcomponent *	e_cal_component_get_icalcomponent
						(ECalComponent *comp);
gboolean	e_cal_component_set_icalcomponent
						(ECalComponent *comp,
						 icalcomponent *icalcomp);
void		e_cal_component_rescan		(ECalComponent *comp);
void		e_cal_component_strip_errors	(ECalComponent *comp);

ECalComponentVType
		e_cal_component_get_vtype	(ECalComponent *comp);

gchar *		e_cal_component_get_as_string	(ECalComponent *comp);

void		e_cal_component_commit_sequence	(ECalComponent *comp);
void		e_cal_component_abort_sequence	(ECalComponent *comp);

void		e_cal_component_get_uid		(ECalComponent *comp,
						 const gchar **uid);
void		e_cal_component_set_uid		(ECalComponent *comp,
						 const gchar *uid);

ECalComponentId *
		e_cal_component_get_id		(ECalComponent *comp);
void		e_cal_component_free_id		(ECalComponentId *id);
ECalComponentId *
		e_cal_component_id_new		(const gchar *uid,
						 const gchar *rid);
ECalComponentId *
		e_cal_component_id_copy		(const ECalComponentId *id);
guint		e_cal_component_id_hash		(const ECalComponentId *id);
gboolean	e_cal_component_id_equal	(const ECalComponentId *id1,
						 const ECalComponentId *id2);

void		e_cal_component_get_categories	(ECalComponent *comp,
						 const gchar **categories);
void		e_cal_component_set_categories	(ECalComponent *comp,
						 const gchar *categories);
void		e_cal_component_get_categories_list
						(ECalComponent *comp,
						 GSList **categ_list);
void		e_cal_component_set_categories_list
						(ECalComponent *comp,
						 GSList *categ_list);

void		e_cal_component_get_classification
						(ECalComponent *comp,
						 ECalComponentClassification *classif);
void		e_cal_component_set_classification
						(ECalComponent *comp,
						 ECalComponentClassification classif);

void		e_cal_component_get_comment_list
						(ECalComponent *comp,
						 GSList **text_list);
void		e_cal_component_set_comment_list
						(ECalComponent *comp,
						 GSList *text_list);

void		e_cal_component_get_completed	(ECalComponent *comp,
						 struct icaltimetype **t);
void		e_cal_component_set_completed	(ECalComponent *comp,
						 struct icaltimetype *t);

void		e_cal_component_get_contact_list
						(ECalComponent *comp,
						 GSList **text_list);
void		e_cal_component_set_contact_list
						(ECalComponent *comp,
						 GSList *text_list);

void		e_cal_component_get_created	(ECalComponent *comp,
						 struct icaltimetype **t);
void		e_cal_component_set_created	(ECalComponent *comp,
						 struct icaltimetype *t);

void		e_cal_component_get_description_list
						(ECalComponent *comp,
						 GSList **text_list);
void		e_cal_component_set_description_list
						(ECalComponent *comp,
						 GSList *text_list);

void		e_cal_component_get_dtend	(ECalComponent *comp,
						 ECalComponentDateTime *dt);
void		e_cal_component_set_dtend	(ECalComponent *comp,
						 ECalComponentDateTime *dt);

void		e_cal_component_get_dtstamp	(ECalComponent *comp,
						 struct icaltimetype *t);
void		e_cal_component_set_dtstamp	(ECalComponent *comp,
						 struct icaltimetype *t);

void		e_cal_component_get_dtstart	(ECalComponent *comp,
						 ECalComponentDateTime *dt);
void		e_cal_component_set_dtstart	(ECalComponent *comp,
						 ECalComponentDateTime *dt);

void		e_cal_component_get_due		(ECalComponent *comp,
						 ECalComponentDateTime *dt);
void		e_cal_component_set_due		(ECalComponent *comp,
						 ECalComponentDateTime *dt);

void		e_cal_component_get_exdate_list	(ECalComponent *comp,
						 GSList **exdate_list);
void		e_cal_component_set_exdate_list	(ECalComponent *comp,
						 GSList *exdate_list);
gboolean	e_cal_component_has_exdates	(ECalComponent *comp);

void		e_cal_component_get_exrule_list	(ECalComponent *comp,
						 GSList **recur_list);
void		e_cal_component_get_exrule_property_list
						(ECalComponent *comp,
						 GSList **recur_list);
void		e_cal_component_set_exrule_list	(ECalComponent *comp,
						 GSList *recur_list);
gboolean	e_cal_component_has_exrules	(ECalComponent *comp);

gboolean	e_cal_component_has_exceptions	(ECalComponent *comp);

void		e_cal_component_get_geo		(ECalComponent *comp,
						 struct icalgeotype **geo);
void		e_cal_component_set_geo		(ECalComponent *comp,
						 struct icalgeotype *geo);

void		e_cal_component_get_last_modified
						(ECalComponent *comp,
						 struct icaltimetype **t);
void		e_cal_component_set_last_modified
						(ECalComponent *comp,
						 struct icaltimetype *t);

void		e_cal_component_get_organizer	(ECalComponent *comp,
						 ECalComponentOrganizer *organizer);
void		e_cal_component_set_organizer	(ECalComponent *comp,
						 ECalComponentOrganizer *organizer);
gboolean	e_cal_component_has_organizer	(ECalComponent *comp);

gint		e_cal_component_get_percent_as_int
						(ECalComponent *comp);
void		e_cal_component_set_percent_as_int
						(ECalComponent *comp,
						 gint percent);

void		e_cal_component_get_percent	(ECalComponent *comp,
						 gint **percent);
void		e_cal_component_set_percent	(ECalComponent *comp,
						 gint *percent);

void		e_cal_component_get_priority	(ECalComponent *comp,
						 gint **priority);
void		e_cal_component_set_priority	(ECalComponent *comp,
						 gint *priority);

void		e_cal_component_get_recurid	(ECalComponent *comp,
						 ECalComponentRange *recur_id);
gchar *		e_cal_component_get_recurid_as_string
						(ECalComponent *comp);
void		e_cal_component_set_recurid	(ECalComponent *comp,
						 ECalComponentRange *recur_id);

void		e_cal_component_get_rdate_list	(ECalComponent *comp,
						 GSList **period_list);
void		e_cal_component_set_rdate_list	(ECalComponent *comp,
						 GSList *period_list);
gboolean	e_cal_component_has_rdates	(ECalComponent *comp);

void		e_cal_component_get_rrule_list	(ECalComponent *comp,
						 GSList **recur_list);
void		e_cal_component_get_rrule_property_list
						(ECalComponent *comp,
						 GSList **recur_list);
void		e_cal_component_set_rrule_list	(ECalComponent *comp,
						 GSList *recur_list);
gboolean	e_cal_component_has_rrules	(ECalComponent *comp);

gboolean	e_cal_component_has_recurrences	(ECalComponent *comp);
gboolean	e_cal_component_has_simple_recurrence
						(ECalComponent *comp);
gboolean	e_cal_component_is_instance	(ECalComponent *comp);

void		e_cal_component_get_sequence	(ECalComponent *comp,
						 gint **sequence);
void		e_cal_component_set_sequence	(ECalComponent *comp,
						 gint *sequence);

void		e_cal_component_get_status	(ECalComponent *comp,
						 icalproperty_status *status);
void		e_cal_component_set_status	(ECalComponent *comp,
						 icalproperty_status status);

void		e_cal_component_get_summary	(ECalComponent *comp,
						 ECalComponentText *summary);
void		e_cal_component_set_summary	(ECalComponent *comp,
						 ECalComponentText *summary);

void		e_cal_component_get_transparency
						(ECalComponent *comp,
						 ECalComponentTransparency *transp);
void		e_cal_component_set_transparency
						(ECalComponent *comp,
						 ECalComponentTransparency transp);

void		e_cal_component_get_url		(ECalComponent *comp,
						 const gchar **url);
void		e_cal_component_set_url		(ECalComponent *comp,
						 const gchar *url);

void		e_cal_component_get_attendee_list
						(ECalComponent *comp,
						 GSList **attendee_list);
void		e_cal_component_set_attendee_list
						(ECalComponent *comp,
						 GSList *attendee_list);
gboolean	e_cal_component_has_attendees	(ECalComponent *comp);

void		e_cal_component_get_location	(ECalComponent *comp,
						 const gchar **location);
void		e_cal_component_set_location	(ECalComponent *comp,
						 const gchar *location);

/* Attachment handling */
void		e_cal_component_get_attachment_list
						(ECalComponent *comp,
						 GSList **attachment_list);
void		e_cal_component_set_attachment_list
						(ECalComponent *comp,
						 GSList *attachment_list);
gboolean	e_cal_component_has_attachments	(ECalComponent *comp);
gint		e_cal_component_get_num_attachments
						(ECalComponent *comp);

gboolean	e_cal_component_event_dates_match
						(ECalComponent *comp1,
						 ECalComponent *comp2);

/* Functions to free returned values */

void		e_cal_component_free_categories_list
						(GSList *categ_list);
void		e_cal_component_free_datetime	(ECalComponentDateTime *dt);
void		e_cal_component_free_range	(ECalComponentRange *range);
void		e_cal_component_free_exdate_list
						(GSList *exdate_list);
void		e_cal_component_free_geo	(struct icalgeotype *geo);
void		e_cal_component_free_icaltimetype
						(struct icaltimetype *t);
void		e_cal_component_free_percent	(gint *percent);
void		e_cal_component_free_priority	(gint *priority);
void		e_cal_component_free_period_list
						(GSList *period_list);
void		e_cal_component_free_recur_list	(GSList *recur_list);
void		e_cal_component_free_sequence	(gint *sequence);
void		e_cal_component_free_text_list	(GSList *text_list);
void		e_cal_component_free_attendee_list
						(GSList *attendee_list);

/* Alarms */

/* Opaque structure used to represent alarm subcomponents */
typedef struct _ECalComponentAlarm ECalComponentAlarm;

/* An alarm occurrence, i.e. a trigger instance */
typedef struct {
	/* UID of the alarm that triggered */
	gchar *auid;

	/* Trigger time, i.e. "5 minutes before the appointment" */
	time_t trigger;

	/* Actual event occurrence to which this trigger corresponds */
	time_t occur_start;
	time_t occur_end;
} ECalComponentAlarmInstance;

/* Alarm trigger instances for a particular component */
typedef struct {
	/* The actual component */
	ECalComponent *comp;

	/* List of ECalComponentAlarmInstance structures */
	GSList *alarms;
} ECalComponentAlarms;

/* Alarm types */
typedef enum {
	E_CAL_COMPONENT_ALARM_NONE,
	E_CAL_COMPONENT_ALARM_AUDIO,
	E_CAL_COMPONENT_ALARM_DISPLAY,
	E_CAL_COMPONENT_ALARM_EMAIL,
	E_CAL_COMPONENT_ALARM_PROCEDURE,
	E_CAL_COMPONENT_ALARM_UNKNOWN
} ECalComponentAlarmAction;

/* Whether a trigger is relative to the start or end of an event occurrence, or
 * whether it is specified to occur at an absolute time.
 */
typedef enum {
	E_CAL_COMPONENT_ALARM_TRIGGER_NONE,
	E_CAL_COMPONENT_ALARM_TRIGGER_RELATIVE_START,
	E_CAL_COMPONENT_ALARM_TRIGGER_RELATIVE_END,
	E_CAL_COMPONENT_ALARM_TRIGGER_ABSOLUTE
} ECalComponentAlarmTriggerType;

typedef struct {
	ECalComponentAlarmTriggerType type;

	union {
		struct icaldurationtype rel_duration;
		struct icaltimetype abs_time;
	} u;
} ECalComponentAlarmTrigger;

typedef struct {
	/* Number of extra repetitions, zero for none */
	gint repetitions;

	/* Interval between repetitions */
	struct icaldurationtype duration;
} ECalComponentAlarmRepeat;

gboolean	e_cal_component_has_alarms	(ECalComponent *comp);
void		e_cal_component_add_alarm	(ECalComponent *comp,
						 ECalComponentAlarm *alarm);
void		e_cal_component_remove_alarm	(ECalComponent *comp,
						 const gchar *auid);
void		e_cal_component_remove_all_alarms
						(ECalComponent *comp);

GList *		e_cal_component_get_alarm_uids	(ECalComponent *comp);
ECalComponentAlarm *
		e_cal_component_get_alarm	(ECalComponent *comp,
						 const gchar *auid);

void		e_cal_component_alarms_free	(ECalComponentAlarms *alarms);

/* ECalComponentAlarms */
ECalComponentAlarm *
		e_cal_component_alarm_new	(void);
ECalComponentAlarm *
		e_cal_component_alarm_clone	(ECalComponentAlarm *alarm);
void		e_cal_component_alarm_free	(ECalComponentAlarm *alarm);

const gchar *	e_cal_component_alarm_get_uid	(ECalComponentAlarm *alarm);

void		e_cal_component_alarm_get_action
						(ECalComponentAlarm *alarm,
						 ECalComponentAlarmAction *action);
void		e_cal_component_alarm_set_action
						(ECalComponentAlarm *alarm,
						 ECalComponentAlarmAction action);

void		e_cal_component_alarm_get_attach
						(ECalComponentAlarm *alarm,
						 icalattach **attach);
void		e_cal_component_alarm_set_attach
						(ECalComponentAlarm *alarm,
						 icalattach *attach);

void		e_cal_component_alarm_get_description
						(ECalComponentAlarm *alarm,
						 ECalComponentText *description);
void		e_cal_component_alarm_set_description
						(ECalComponentAlarm *alarm,
						 ECalComponentText *description);

void		e_cal_component_alarm_get_repeat
						(ECalComponentAlarm *alarm,
						 ECalComponentAlarmRepeat *repeat);
void		e_cal_component_alarm_set_repeat
						(ECalComponentAlarm *alarm,
						 ECalComponentAlarmRepeat repeat);

void		e_cal_component_alarm_get_trigger
						(ECalComponentAlarm *alarm,
						 ECalComponentAlarmTrigger *trigger);
void		e_cal_component_alarm_set_trigger
						(ECalComponentAlarm *alarm,
						 ECalComponentAlarmTrigger trigger);

void		e_cal_component_alarm_get_attendee_list
						(ECalComponentAlarm *alarm,
						 GSList **attendee_list);
void		e_cal_component_alarm_set_attendee_list
						(ECalComponentAlarm *alarm,
						 GSList *attendee_list);
gboolean	e_cal_component_alarm_has_attendees
						(ECalComponentAlarm *alarm);

icalcomponent *	e_cal_component_alarm_get_icalcomponent
						(ECalComponentAlarm *alarm);

G_END_DECLS

#endif /* E_CAL_COMPONENT_H */
