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/* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8 -*- */
/*
 * Authors :
 *  Damon Chaplin <damon@ximian.com>
 *  Rodrigo Moya <rodrigo@ximian.com>
 *
 * Copyright 2000-2004, Novell, Inc.
 *
 * 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
 */

/*
 * calendar-config.c - functions to load/save/get/set user settings.
 */

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

#include <string.h>
#include <time.h>
#include <libgnomeui/gnome-dialog.h>
#include <libedataserver/e-data-server-util.h>
#include <e-util/e-util.h>
#include <widgets/e-timezone-dialog/e-timezone-dialog.h>
#include <libecal/e-cal-time-util.h>

#include "calendar-config-keys.h"
#include "calendar-config.h"



static GConfClient *config = NULL;

/* Store the zones here, this is not destroyed as the ical timezones */
static GHashTable *custom_zones = NULL;

static void on_timezone_set     (GnomeDialog    *dialog,
                     int         button,
                     ETimezoneDialog *etd);
static gboolean on_timezone_dialog_delete_event (GnomeDialog    *dialog,
                         GdkEvent   *event,
                         ETimezoneDialog *etd);

static void
do_cleanup (void)
{
    g_object_unref (config);
    config = NULL;
}

static void
calendar_config_init (void)
{
    if (config)
        return;

    config = gconf_client_get_default ();
    g_atexit ((GVoidFunc) do_cleanup);

    gconf_client_add_dir (config, CALENDAR_CONFIG_PREFIX, GCONF_CLIENT_PRELOAD_RECURSIVE, NULL);
}

void
calendar_config_remove_notification (guint id)
{
    calendar_config_init ();
    
    gconf_client_notify_remove (config, id);
}

/* Returns TRUE if the locale has 'am' and 'pm' strings defined, in which
   case the user can choose between 12 and 24-hour time formats. */
gboolean
calendar_config_locale_supports_12_hour_format (void)
{
    char s[16];
    time_t t = 0;

    calendar_config_init ();

    e_utf8_strftime (s, sizeof s, "%p", gmtime (&t));
    return s[0] != '\0';
}

/* Returns the string representation of a units value */
static const char *
units_to_string (CalUnits units)
{
    switch (units) {
    case CAL_DAYS:
        return "days";

    case CAL_HOURS:
        return "hours";

    case CAL_MINUTES:
        return "minutes";

    default:
        g_assert_not_reached ();
        return NULL;
    }
}

/*
 * Calendar Settings.
 */

/* The current list of calendars selected */
GSList *
calendar_config_get_calendars_selected (void)
{
    calendar_config_init ();

    return gconf_client_get_list (config, CALENDAR_CONFIG_SELECTED_CALENDARS, GCONF_VALUE_STRING, NULL);
}

void
calendar_config_set_calendars_selected (GSList *selected)
{
    calendar_config_init ();

    gconf_client_set_list (config, CALENDAR_CONFIG_SELECTED_CALENDARS, GCONF_VALUE_STRING, selected, NULL);
}

guint
calendar_config_add_notification_calendars_selected (GConfClientNotifyFunc func, gpointer data)
{
    guint id;

    calendar_config_init ();
    
    id = gconf_client_notify_add (config, CALENDAR_CONFIG_SELECTED_CALENDARS, func, data, NULL, NULL);
    
    return id;
}

/* The primary calendar */
char *
calendar_config_get_primary_calendar (void)
{
    calendar_config_init ();

    return gconf_client_get_string (config, CALENDAR_CONFIG_PRIMARY_CALENDAR, NULL);
}

void
calendar_config_set_primary_calendar (const char *primary_uid)
{
    calendar_config_init ();

    gconf_client_set_string (config, CALENDAR_CONFIG_PRIMARY_CALENDAR, primary_uid, NULL);
}


guint
calendar_config_add_notification_primary_calendar (GConfClientNotifyFunc func, gpointer data)
{
    guint id;

    calendar_config_init ();
    
    id = gconf_client_notify_add (config, CALENDAR_CONFIG_PRIMARY_CALENDAR, func, data, NULL, NULL);
    
    return id;
}


/* The current timezone, e.g. "Europe/London". It may be NULL, in which case
   you should assume UTC (though Evolution will show the timezone-setting
   dialog the next time a calendar or task folder is selected). */
gchar *
calendar_config_get_timezone (void)
{
    calendar_config_init ();

    return gconf_client_get_string (config, CALENDAR_CONFIG_TIMEZONE, NULL);
}

static void
set_standard_offsets (icalcomponent *zone_comp, int offset)
{
    icalcomponent *dl_comp, *s_comp; 
    icalproperty *offset_from, *offset_to;

    /* Set the offset of the standard component to all the daylight components also */
    for (dl_comp = icalcomponent_get_first_component (zone_comp, ICAL_XDAYLIGHT_COMPONENT); dl_comp != NULL;
            dl_comp = icalcomponent_get_next_component (zone_comp, ICAL_XDAYLIGHT_COMPONENT)) {
        offset_to = icalcomponent_get_first_property (dl_comp, ICAL_TZOFFSETTO_PROPERTY);
        icalproperty_set_tzoffsetto (offset_to, offset);
    }

    /* Set the tzto offset of the standard component to tzfrom */
    for (s_comp = icalcomponent_get_first_component (zone_comp, ICAL_XSTANDARD_COMPONENT); s_comp != NULL;
            s_comp = icalcomponent_get_next_component (zone_comp, ICAL_XSTANDARD_COMPONENT)) {
        offset_from = icalcomponent_get_first_property (s_comp, ICAL_TZOFFSETFROM_PROPERTY);
        icalproperty_set_tzoffsetfrom (offset_from, offset);
    }
}

icaltimezone *
calendar_config_get_icaltimezone (void)
{
    char *location;
    icaltimezone *zone = NULL;

    calendar_config_init ();
    
    location = calendar_config_get_timezone ();
    if (location) {
        icalcomponent *icalcomp, *dl_comp;
        
        zone = icaltimezone_get_builtin_timezone (location);
        icalcomp = icaltimezone_get_component (zone);

        
        if (!(dl_comp = icalcomponent_get_first_component (icalcomp, ICAL_XDAYLIGHT_COMPONENT))) {
            return zone;
        }   

        if (!calendar_config_get_daylight_saving () && zone) {
            icalcomponent *zone_comp, *s_comp;
            icalproperty *tz_prop, *offset_to;
            icaltimezone *st_zone = NULL;
            int offset;
            char *n_tzid, *tzid;
            
            tzid = icaltimezone_get_tzid (zone);
            n_tzid = g_strconcat (tzid, "-(Standard)", NULL);

            if (!custom_zones) {
                custom_zones = g_hash_table_new (g_str_hash, g_str_equal);
            } else if ((st_zone = g_hash_table_lookup (custom_zones, n_tzid))) {
                g_free (n_tzid);

                return st_zone;
            }

            zone_comp = icalcomponent_new_clone (icalcomp);
            s_comp = icalcomponent_get_first_component (zone_comp, ICAL_XSTANDARD_COMPONENT);

            if (!s_comp) {
                g_free (n_tzid);
                icalcomponent_free (zone_comp);
                
                return zone;
            }
            
            offset_to = icalcomponent_get_first_property (s_comp, ICAL_TZOFFSETTO_PROPERTY);
            offset = icalproperty_get_tzoffsetto (offset_to);

            set_standard_offsets (zone_comp, offset);

            tz_prop = icalcomponent_get_first_property (zone_comp, ICAL_TZID_PROPERTY);
            if (tz_prop) {
                icalcomponent_remove_property (zone_comp, tz_prop);
            }

            tz_prop = icalproperty_new_tzid (n_tzid);
            icalcomponent_add_property (zone_comp, tz_prop);

            st_zone = icaltimezone_new ();
            icaltimezone_set_component (st_zone, zone_comp);
            
            zone = st_zone;
            g_hash_table_insert (custom_zones, n_tzid, zone);
        } 

        g_free (location);
    }
    return zone;
}


/* Sets the timezone. If set to NULL it defaults to UTC.
   FIXME: Should check it is being set to a valid timezone. */
void
calendar_config_set_timezone (gchar *timezone)
{
    calendar_config_init ();

    if (timezone && timezone[0])
        gconf_client_set_string (config, CALENDAR_CONFIG_TIMEZONE, timezone, NULL);
    else
        gconf_client_set_string (config, CALENDAR_CONFIG_TIMEZONE, "UTC", NULL);
}

guint
calendar_config_add_notification_timezone (GConfClientNotifyFunc func, gpointer data)
{
    guint id;

    calendar_config_init ();
    
    id = gconf_client_notify_add (config, CALENDAR_CONFIG_TIMEZONE, func, data, NULL, NULL);
    
    return id;
}

gboolean
calendar_config_get_daylight_saving (void)
{
    calendar_config_init ();
        
    return gconf_client_get_bool (config, CALENDAR_CONFIG_DAYLIGHT_SAVING, NULL);
    
}

void
calendar_config_set_daylight_saving (gboolean daylight_saving)
{
    calendar_config_init ();
    
    gconf_client_set_bool (config, CALENDAR_CONFIG_DAYLIGHT_SAVING, daylight_saving, NULL);
}

guint
calendar_config_add_notification_daylight_saving (GConfClientNotifyFunc func, gpointer data)
{
    guint id;

    calendar_config_init ();
    
    id = gconf_client_notify_add (config, CALENDAR_CONFIG_DAYLIGHT_SAVING, func, data, NULL, NULL);
    
    return id;
}

/* Whether we use 24-hour format or 12-hour format (AM/PM). */
gboolean
calendar_config_get_24_hour_format  (void)
{
    calendar_config_init ();

    /* If the locale defines 'am' and 'pm' strings then the user has the
       choice of 12-hour or 24-hour time format, with 12-hour as the
       default. If the locale doesn't have 'am' and 'pm' strings we have
       to use 24-hour format, or strftime()/strptime() won't work. */
    if (calendar_config_locale_supports_12_hour_format ())
        return gconf_client_get_bool (config, CALENDAR_CONFIG_24HOUR, NULL);

    return TRUE;
}


void
calendar_config_set_24_hour_format  (gboolean     use_24_hour)
{
    calendar_config_init ();

    gconf_client_set_bool (config, CALENDAR_CONFIG_24HOUR, use_24_hour, NULL);
}

guint
calendar_config_add_notification_24_hour_format (GConfClientNotifyFunc func, gpointer data)
{
    guint id;

    calendar_config_init ();
    
    id = gconf_client_notify_add (config, CALENDAR_CONFIG_24HOUR, func, data, NULL, NULL);
    
    return id;
}

/* Show RSVP*/
gboolean
calendar_config_get_show_rsvp   (void)
{
    calendar_config_init ();

    return gconf_client_get_bool (config, CALENDAR_CONFIG_SHOW_RSVP, NULL);
}

void
calendar_config_set_show_rsvp   (gboolean state)
{
    calendar_config_init ();

    gconf_client_set_bool (config, CALENDAR_CONFIG_SHOW_RSVP, state, NULL);
}

/* Show Role*/
gboolean
calendar_config_get_show_role   (void)
{
    calendar_config_init ();

    return gconf_client_get_bool (config, CALENDAR_CONFIG_SHOW_ROLE, NULL);
}

void
calendar_config_set_show_role   (gboolean state)
{
    calendar_config_init ();

    gconf_client_set_bool (config, CALENDAR_CONFIG_SHOW_ROLE, state, NULL);
}

/* Show Type*/
gboolean
calendar_config_get_show_type   (void)
{
    calendar_config_init ();

    return gconf_client_get_bool (config, CALENDAR_CONFIG_SHOW_TYPE, NULL);
}

void
calendar_config_set_show_type   (gboolean state)
{
    calendar_config_init ();

    gconf_client_set_bool (config, CALENDAR_CONFIG_SHOW_TYPE, state, NULL);
}

/* Show status */
gboolean
calendar_config_get_show_status (void)
{
    calendar_config_init ();

    return gconf_client_get_bool (config, CALENDAR_CONFIG_SHOW_STATUS, NULL);
}

void
calendar_config_set_show_status (gboolean state)
{
    calendar_config_init ();

    gconf_client_set_bool (config, CALENDAR_CONFIG_SHOW_STATUS, state, NULL);
}

/* Show timezone */
gboolean  
calendar_config_get_show_timezone (void)
{
    calendar_config_init ();

    return gconf_client_get_bool (config, CALENDAR_CONFIG_SHOW_TIMEZONE, NULL);
}

void      
calendar_config_set_show_timezone (gboolean status)
{
    calendar_config_init ();

    gconf_client_set_bool (config, CALENDAR_CONFIG_SHOW_TIMEZONE, status, NULL);    
}

gboolean  
calendar_config_get_show_categories (void)
{
    calendar_config_init ();

    return gconf_client_get_bool (config, CALENDAR_CONFIG_SHOW_CATEGORIES, NULL);
}
void      
calendar_config_set_show_categories (gboolean   status)
{
    calendar_config_init ();

    gconf_client_set_bool (config, CALENDAR_CONFIG_SHOW_CATEGORIES, status, NULL);
}


/* The start day of the week (0 = Sun to 6 = Mon). */
gint
calendar_config_get_week_start_day  (void)
{
    calendar_config_init ();

    return gconf_client_get_int (config, CALENDAR_CONFIG_WEEK_START, NULL);
}


void
calendar_config_set_week_start_day  (gint         week_start_day)
{
    calendar_config_init ();

    gconf_client_set_int (config, CALENDAR_CONFIG_WEEK_START, week_start_day, NULL);
}

guint 
calendar_config_add_notification_week_start_day (GConfClientNotifyFunc func, gpointer data)
{
    guint id;

    calendar_config_init ();
    
    id = gconf_client_notify_add (config, CALENDAR_CONFIG_WEEK_START, func, data, NULL, NULL);
    
    return id;  
}

/* The start and end times of the work-day. */
gint
calendar_config_get_day_start_hour  (void)
{
    calendar_config_init ();

    return gconf_client_get_int (config, CALENDAR_CONFIG_DAY_START_HOUR, NULL);
}


void
calendar_config_set_day_start_hour  (gint         day_start_hour)
{
    calendar_config_init ();

    gconf_client_set_int (config, CALENDAR_CONFIG_DAY_START_HOUR, day_start_hour, NULL);
}

guint 
calendar_config_add_notification_day_start_hour (GConfClientNotifyFunc func, gpointer data)
{
    guint id;

    calendar_config_init ();
    
    id = gconf_client_notify_add (config, CALENDAR_CONFIG_DAY_START_HOUR, func, data, NULL, NULL);
    
    return id;  
}

gint
calendar_config_get_day_start_minute    (void)
{
    calendar_config_init ();

    return gconf_client_get_int (config, CALENDAR_CONFIG_DAY_START_MINUTE, NULL);
}


void
calendar_config_set_day_start_minute    (gint         day_start_min)
{
    calendar_config_init ();

    gconf_client_set_int (config, CALENDAR_CONFIG_DAY_START_MINUTE, day_start_min, NULL);
}

guint 
calendar_config_add_notification_day_start_minute (GConfClientNotifyFunc func, gpointer data)
{
    guint id;

    calendar_config_init ();
    
    id = gconf_client_notify_add (config, CALENDAR_CONFIG_DAY_START_MINUTE, func, data, NULL, NULL);
    
    return id;  
}

gint
calendar_config_get_day_end_hour    (void)
{
    calendar_config_init ();

    return gconf_client_get_int (config, CALENDAR_CONFIG_DAY_END_HOUR, NULL);
}


void
calendar_config_set_day_end_hour    (gint         day_end_hour)
{
    calendar_config_init ();

    gconf_client_set_int (config, CALENDAR_CONFIG_DAY_END_HOUR, day_end_hour, NULL);
}

guint 
calendar_config_add_notification_day_end_hour (GConfClientNotifyFunc func, gpointer data)
{
    guint id;

    calendar_config_init ();
    
    id = gconf_client_notify_add (config, CALENDAR_CONFIG_DAY_END_HOUR, func, data, NULL, NULL);
    
    return id;  
}

gint
calendar_config_get_day_end_minute  (void)
{
    calendar_config_init ();

    return gconf_client_get_int (config, CALENDAR_CONFIG_DAY_END_MINUTE, NULL);
}


void
calendar_config_set_day_end_minute  (gint         day_end_min)
{
    calendar_config_init ();

    gconf_client_set_int (config, CALENDAR_CONFIG_DAY_END_MINUTE, day_end_min, NULL);
}

guint 
calendar_config_add_notification_day_end_minute (GConfClientNotifyFunc func, gpointer data)
{
    guint id;
    
    calendar_config_init ();

    id = gconf_client_notify_add (config, CALENDAR_CONFIG_DAY_END_MINUTE, func, data, NULL, NULL);
    
    return id;  
}

/* The time divisions in the Day/Work-Week view in minutes (5/10/15/30/60). */
gint
calendar_config_get_time_divisions  (void)
{
    calendar_config_init ();

    return gconf_client_get_int (config, CALENDAR_CONFIG_TIME_DIVISIONS, NULL);
}


void
calendar_config_set_time_divisions  (gint         divisions)
{
    calendar_config_init ();

    gconf_client_set_int (config, CALENDAR_CONFIG_TIME_DIVISIONS, divisions, NULL);
}

guint
calendar_config_add_notification_time_divisions (GConfClientNotifyFunc func, gpointer data)
{
    guint id;

    calendar_config_init ();
    
    id = gconf_client_notify_add (config, CALENDAR_CONFIG_TIME_DIVISIONS, func, data, NULL, NULL);
    
    return id;
}

/* Whether we show the Marcus Bains Line (current time), and in what colors. */
void
calendar_config_get_marcus_bains (gboolean *show_line, const char **dayview_color, const char **timebar_color)
{
    static char *dcolor = NULL, *tcolor = NULL;

    if (dcolor)
        g_free (dcolor);
    if (tcolor)
        g_free (tcolor);

    dcolor = gconf_client_get_string (config, CALENDAR_CONFIG_MARCUS_BAINS_COLOR_DAYVIEW, NULL);
    tcolor = gconf_client_get_string (config, CALENDAR_CONFIG_MARCUS_BAINS_COLOR_TIMEBAR, NULL);

    *show_line = gconf_client_get_bool (config, CALENDAR_CONFIG_MARCUS_BAINS_LINE, NULL);
    *dayview_color = dcolor;
    *timebar_color = tcolor;
}


void
calendar_config_add_notification_marcus_bains (GConfClientNotifyFunc func, gpointer data, gint *not_show, gint *not_dcolor, gint *not_tcolor)
{
    *not_show = gconf_client_notify_add (config, CALENDAR_CONFIG_MARCUS_BAINS_LINE, func, data, NULL, NULL);
    *not_dcolor = gconf_client_notify_add (config, CALENDAR_CONFIG_MARCUS_BAINS_COLOR_DAYVIEW, func, data, NULL, NULL);
    *not_tcolor = gconf_client_notify_add (config, CALENDAR_CONFIG_MARCUS_BAINS_COLOR_TIMEBAR, func, data, NULL, NULL);
}

/* Whether we show week numbers in the Date Navigator. */
gboolean
calendar_config_get_dnav_show_week_no   (void)
{
    calendar_config_init ();

    return gconf_client_get_bool (config, CALENDAR_CONFIG_DN_SHOW_WEEK_NUMBERS, NULL);
}


void
calendar_config_set_dnav_show_week_no   (gboolean     show_week_no)
{
    calendar_config_init ();

    gconf_client_set_bool (config, CALENDAR_CONFIG_DN_SHOW_WEEK_NUMBERS, show_week_no, NULL);
}

guint 
calendar_config_add_notification_dnav_show_week_no (GConfClientNotifyFunc func, gpointer data)
{
    guint id;

    calendar_config_init ();
    
    id = gconf_client_notify_add (config, CALENDAR_CONFIG_DN_SHOW_WEEK_NUMBERS, func, data, NULL, NULL);
    
    return id;
}

/* The positions of the panes in the normal and month views. */
gint
calendar_config_get_hpane_pos       (void)
{
    calendar_config_init ();

    return gconf_client_get_int (config, CALENDAR_CONFIG_HPANE_POS, NULL);
}


void
calendar_config_set_hpane_pos       (gint         hpane_pos)
{
    calendar_config_init ();

    gconf_client_set_int (config, CALENDAR_CONFIG_HPANE_POS, hpane_pos, NULL);
}


gint
calendar_config_get_vpane_pos       (void)
{
    calendar_config_init ();

    return gconf_client_get_int (config, CALENDAR_CONFIG_VPANE_POS, NULL);
}


void
calendar_config_set_vpane_pos       (gint         vpane_pos)
{
    calendar_config_init ();

    gconf_client_set_int (config, CALENDAR_CONFIG_VPANE_POS, vpane_pos, NULL);
}

gboolean
calendar_config_get_preview_state       (void)
{
    calendar_config_init ();

    return gconf_client_get_bool (config, CALENDAR_CONFIG_TASK_PREVIEW, NULL);
}


void
calendar_config_set_preview_state       (gboolean state)
{
    calendar_config_init ();

    gconf_client_set_bool (config, CALENDAR_CONFIG_TASK_PREVIEW, state, NULL);
}

guint
calendar_config_add_notification_preview_state (GConfClientNotifyFunc func, gpointer data)
{
    guint id;

    id = gconf_client_notify_add (config, CALENDAR_CONFIG_TASK_PREVIEW, func, data, NULL, NULL);

    return id;
}

gint
calendar_config_get_month_hpane_pos (void)
{
    calendar_config_init ();

    return gconf_client_get_int (config, CALENDAR_CONFIG_MONTH_HPANE_POS, NULL);
}


void
calendar_config_set_month_hpane_pos (gint         hpane_pos)
{
    calendar_config_init ();

    gconf_client_set_int (config, CALENDAR_CONFIG_MONTH_HPANE_POS, hpane_pos, NULL);
}


gint
calendar_config_get_month_vpane_pos (void)
{
    calendar_config_init ();

    return  gconf_client_get_int (config, CALENDAR_CONFIG_MONTH_VPANE_POS, NULL);
}


void
calendar_config_set_month_vpane_pos (gint         vpane_pos)
{
    gconf_client_set_int (config, CALENDAR_CONFIG_MONTH_VPANE_POS, vpane_pos, NULL);
}

/* The current list of task lists selected */
GSList   *
calendar_config_get_tasks_selected (void)
{
    return gconf_client_get_list (config, CALENDAR_CONFIG_TASKS_SELECTED_TASKS, GCONF_VALUE_STRING, NULL);
}

void
calendar_config_set_tasks_selected (GSList *selected)
{
    gconf_client_set_list (config, CALENDAR_CONFIG_TASKS_SELECTED_TASKS, GCONF_VALUE_STRING, selected, NULL);
}

guint
calendar_config_add_notification_tasks_selected (GConfClientNotifyFunc func, gpointer data)
{
    guint id;
    
    id = gconf_client_notify_add (config, CALENDAR_CONFIG_TASKS_SELECTED_TASKS, func, data, NULL, NULL);
    
    return id;
}

/* The primary task list */
char *
calendar_config_get_primary_tasks (void)
{
    calendar_config_init ();

    return gconf_client_get_string (config, CALENDAR_CONFIG_PRIMARY_TASKS, NULL);
}

void
calendar_config_set_primary_tasks (const char *primary_uid)
{
    gconf_client_set_string (config, CALENDAR_CONFIG_PRIMARY_TASKS, primary_uid, NULL);
}


guint
calendar_config_add_notification_primary_tasks (GConfClientNotifyFunc func, gpointer data)
{
    guint id;
    
    id = gconf_client_notify_add (config, CALENDAR_CONFIG_PRIMARY_TASKS, func, data, NULL, NULL);
    
    return id;
}

gint
calendar_config_get_task_vpane_pos  (void)
{
    return  gconf_client_get_int (config, CALENDAR_CONFIG_TASK_VPANE_POS, NULL);
}


void
calendar_config_set_task_vpane_pos  (gint         vpane_pos)
{
    gconf_client_set_int (config, CALENDAR_CONFIG_TASK_VPANE_POS, vpane_pos, NULL);
}

/***************************************/

/* The current list of memo lists selected */
GSList   *
calendar_config_get_memos_selected (void)
{
    return gconf_client_get_list (config, CALENDAR_CONFIG_MEMOS_SELECTED_MEMOS, GCONF_VALUE_STRING, NULL);
}

void
calendar_config_set_memos_selected (GSList *selected)
{
    gconf_client_set_list (config, CALENDAR_CONFIG_MEMOS_SELECTED_MEMOS, GCONF_VALUE_STRING, selected, NULL);
}

guint
calendar_config_add_notification_memos_selected (GConfClientNotifyFunc func, gpointer data)
{
    guint id;
    
    id = gconf_client_notify_add (config, CALENDAR_CONFIG_MEMOS_SELECTED_MEMOS, func, data, NULL, NULL);
    
    return id;
}

/* The primary memo list */
char *
calendar_config_get_primary_memos (void)
{
    calendar_config_init ();

    return gconf_client_get_string (config, CALENDAR_CONFIG_PRIMARY_MEMOS, NULL);
}

void
calendar_config_set_primary_memos (const char *primary_uid)
{
    gconf_client_set_string (config, CALENDAR_CONFIG_PRIMARY_MEMOS, primary_uid, NULL);
}


guint
calendar_config_add_notification_primary_memos (GConfClientNotifyFunc func, gpointer data)
{
    guint id;
    
    id = gconf_client_notify_add (config, CALENDAR_CONFIG_PRIMARY_MEMOS, func, data, NULL, NULL);
    
    return id;
}
/***************************************/

/* Whether we compress the weekend in the week/month views. */
gboolean
calendar_config_get_compress_weekend    (void)
{
    return gconf_client_get_bool (config, CALENDAR_CONFIG_COMPRESS_WEEKEND, NULL);
}


void
calendar_config_set_compress_weekend    (gboolean     compress)
{
    gconf_client_set_bool (config, CALENDAR_CONFIG_COMPRESS_WEEKEND, compress, NULL);
}

guint
calendar_config_add_notification_compress_weekend (GConfClientNotifyFunc func, gpointer data)
{
    guint id;
    
    id = gconf_client_notify_add (config, CALENDAR_CONFIG_COMPRESS_WEEKEND, func, data, NULL, NULL);
    
    return id;
}

/* Whether we show event end times. */
gboolean
calendar_config_get_show_event_end  (void)
{
    return gconf_client_get_bool (config, CALENDAR_CONFIG_SHOW_EVENT_END, NULL);
}


void
calendar_config_set_show_event_end  (gboolean     show_end)
{
    gconf_client_set_bool (config, CALENDAR_CONFIG_SHOW_EVENT_END, show_end, NULL);
}

guint
calendar_config_add_notification_show_event_end (GConfClientNotifyFunc func, gpointer data)
{
    guint id;
    
    id = gconf_client_notify_add (config, CALENDAR_CONFIG_SHOW_EVENT_END, func, data, NULL, NULL);
    
    return id;
}

/* The working days of the week, a bit-wise combination of flags. */
CalWeekdays
calendar_config_get_working_days    (void)
{
    return gconf_client_get_int (config, CALENDAR_CONFIG_WORKING_DAYS, NULL);
}


void
calendar_config_set_working_days    (CalWeekdays  days)
{
    gconf_client_set_int (config, CALENDAR_CONFIG_WORKING_DAYS, days, NULL);
}

guint 
calendar_config_add_notification_working_days (GConfClientNotifyFunc func, gpointer data)
{
    guint id;
    
    id = gconf_client_notify_add (config, CALENDAR_CONFIG_WORKING_DAYS , func, data, NULL, NULL);
    
    return id;  
}

/* Settings to hide completed tasks. */
gboolean
calendar_config_get_hide_completed_tasks    (void)
{
    return gconf_client_get_bool (config, CALENDAR_CONFIG_TASKS_HIDE_COMPLETED, NULL);
}


void
calendar_config_set_hide_completed_tasks    (gboolean   hide)
{
    gconf_client_set_bool (config, CALENDAR_CONFIG_TASKS_HIDE_COMPLETED, hide, NULL);
}

guint 
calendar_config_add_notification_hide_completed_tasks (GConfClientNotifyFunc func, gpointer data)
{
    guint id;
    
    id = gconf_client_notify_add (config, CALENDAR_CONFIG_TASKS_HIDE_COMPLETED , func, data, NULL, NULL);
    
    return id;  
}

CalUnits
calendar_config_get_hide_completed_tasks_units  (void)
{
    char *units;
    CalUnits cu;

    units = gconf_client_get_string (config, CALENDAR_CONFIG_TASKS_HIDE_COMPLETED_UNITS, NULL);

    if (units && !strcmp (units, "minutes"))
        cu = CAL_MINUTES;
    else if (units && !strcmp (units, "hours"))
        cu = CAL_HOURS;
    else
        cu = CAL_DAYS;

    g_free (units);

    return cu;
}


void
calendar_config_set_hide_completed_tasks_units  (CalUnits   cu)
{
    char *units;

    switch (cu) {
    case CAL_MINUTES :
        units = g_strdup ("minutes");
        break;
    case CAL_HOURS :
        units = g_strdup ("hours");
        break;
    default :
        units = g_strdup ("days");
    }

    gconf_client_set_string (config, CALENDAR_CONFIG_TASKS_HIDE_COMPLETED_UNITS, units, NULL);

    g_free (units);
}

guint 
calendar_config_add_notification_hide_completed_tasks_units (GConfClientNotifyFunc func, gpointer data)
{
    guint id;
    
    id = gconf_client_notify_add (config, CALENDAR_CONFIG_TASKS_HIDE_COMPLETED_UNITS , func, data, NULL, NULL);
    
    return id;  
}

gint
calendar_config_get_hide_completed_tasks_value  (void)
{
    return gconf_client_get_int (config, CALENDAR_CONFIG_TASKS_HIDE_COMPLETED_VALUE, NULL);
}


void
calendar_config_set_hide_completed_tasks_value  (gint       value)
{
    gconf_client_set_int (config, CALENDAR_CONFIG_TASKS_HIDE_COMPLETED_VALUE, value, NULL);
}

guint 
calendar_config_add_notification_hide_completed_tasks_value (GConfClientNotifyFunc func, gpointer data)
{
    guint id;
    
    id = gconf_client_notify_add (config, CALENDAR_CONFIG_TASKS_HIDE_COMPLETED_VALUE , func, data, NULL, NULL);
    
    return id;  
}

/**
 * calendar_config_get_confirm_delete:
 *
 * Queries the configuration value for whether a confirmation dialog is
 * presented when deleting calendar/tasks items.
 *
 * Return value: Whether confirmation is required when deleting items.
 **/
gboolean
calendar_config_get_confirm_delete (void)
{
    return gconf_client_get_bool (config, CALENDAR_CONFIG_PROMPT_DELETE, NULL);
}

/**
 * calendar_config_set_confirm_delete:
 * @confirm: Whether confirmation is required when deleting items.
 *
 * Sets the configuration value for whether a confirmation dialog is presented
 * when deleting calendar/tasks items.
 **/
void
calendar_config_set_confirm_delete (gboolean confirm)
{
    gconf_client_set_bool (config, CALENDAR_CONFIG_PROMPT_DELETE, confirm, NULL);
}

/**
 * calendar_config_get_confirm_purge:
 *
 * Queries the configuration value for whether a confirmation dialog is
 * presented when purging calendar/tasks items.
 *
 * Return value: Whether confirmation is required when purging items.
 **/
gboolean
calendar_config_get_confirm_purge (void)
{
    return gconf_client_get_bool (config, CALENDAR_CONFIG_PROMPT_PURGE, NULL);
}

/**
 * calendar_config_set_confirm_purge:
 * @confirm: Whether confirmation is required when purging items.
 *
 * Sets the configuration value for whether a confirmation dialog is presented
 * when purging calendar/tasks items.
 **/
void
calendar_config_set_confirm_purge (gboolean confirm)
{
    gconf_client_set_bool (config, CALENDAR_CONFIG_PROMPT_PURGE, confirm, NULL);
}

void
calendar_config_check_timezone_set ()
{
    ETimezoneDialog *timezone_dialog;
    GtkWidget *dialog;
    GList *elem;
    char *zone;

    zone = calendar_config_get_timezone ();
    if (zone && zone[0])
        return;

    /* Show timezone dialog. */
    timezone_dialog = e_timezone_dialog_new ();
    dialog = e_timezone_dialog_get_toplevel (timezone_dialog);

    /* Hide the cancel button, which is the 2nd button. */
    elem = g_list_nth (GNOME_DIALOG (dialog)->buttons, 1);
    gtk_widget_hide (elem->data);

    g_signal_connect (dialog, "clicked",
              G_CALLBACK (on_timezone_set), timezone_dialog);
    g_signal_connect (dialog, "delete-event",
              G_CALLBACK (on_timezone_dialog_delete_event), timezone_dialog);

    gtk_widget_show (dialog);
}


static void
on_timezone_set         (GnomeDialog    *dialog,
                 int         button,
                 ETimezoneDialog *etd)
{
    icaltimezone *zone;

    zone = e_timezone_dialog_get_timezone (etd);
    if (zone)
        calendar_config_set_timezone (icaltimezone_get_location (zone));

    g_object_unref (etd);
}


static gboolean
on_timezone_dialog_delete_event (GnomeDialog    *dialog,
                 GdkEvent   *event,
                 ETimezoneDialog *etd)
{
    g_object_unref (etd);
    return TRUE;
}


/**
 * calendar_config_get_tasks_due_today_color:
 *
 * Queries the color to be used to display tasks that are due today.
 *
 * Return value: An X color specification.
 **/
const char *
calendar_config_get_tasks_due_today_color (void)
{
    static char *color = NULL;

    if (color)
        g_free (color);

    color = gconf_client_get_string (config, CALENDAR_CONFIG_TASKS_DUE_TODAY_COLOR, NULL);
    return color;
}

/**
 * calendar_config_set_tasks_due_today_color:
 * @color: X color specification
 *
 * Sets the color to be used to display tasks that are due today.
 **/
void
calendar_config_set_tasks_due_today_color (const char *color)
{
    g_return_if_fail (color != NULL);

    gconf_client_set_string (config, CALENDAR_CONFIG_TASKS_DUE_TODAY_COLOR, color, NULL);
}

/**
 * calendar_config_get_tasks_overdue_color:
 *
 * Queries the color to be used to display overdue tasks.
 *
 * Return value: An X color specification.
 **/
const char *
calendar_config_get_tasks_overdue_color (void)
{
    static char *color = NULL;

    if (color)
        g_free (color);

    color = gconf_client_get_string (config, CALENDAR_CONFIG_TASKS_OVERDUE_COLOR, NULL);
    return color;
}

/**
 * calendar_config_set_tasks_overdue_color:
 * @color: X color specification
 *
 * Sets the color to be used to display overdue tasks.
 **/
void
calendar_config_set_tasks_overdue_color (const char *color)
{
    g_return_if_fail (color != NULL);

    gconf_client_set_string (config, CALENDAR_CONFIG_TASKS_OVERDUE_COLOR, color, NULL);
}

/**
 * calendar_config_get_use_default_reminder:
 *
 * Queries whether new appointments should be created with a default reminder.
 *
 * Return value: Boolean value indicating whether new appointments should be
 * created with a default reminder from the values of
 * calendar_config_get_default_reminder_interval() and
 * calendar_config_get_default_reminder_units().
 **/
gboolean
calendar_config_get_use_default_reminder (void)
{
    return gconf_client_get_bool (config, CALENDAR_CONFIG_DEFAULT_REMINDER, NULL);
}

/**
 * calendar_config_set_use_default_reminder:
 * @value: Whether to create new appointments with a default reminder.
 *
 * Sets whether newly-created appointments should get a default reminder set
 * them.
 **/
void
calendar_config_set_use_default_reminder (gboolean value)
{
    gconf_client_set_bool (config, CALENDAR_CONFIG_DEFAULT_REMINDER, value, NULL);
}

/**
 * calendar_config_get_default_reminder_interval:
 *
 * Queries the interval for the default reminder of newly-created
 * appointments, i.e. 5 in "5 minutes".
 *
 * Return value: Interval for default reminders.
 **/
int
calendar_config_get_default_reminder_interval (void)
{
    return gconf_client_get_int (config, CALENDAR_CONFIG_DEFAULT_REMINDER_INTERVAL, NULL);
}

/**
 * calendar_config_set_default_reminder_interval:
 * @interval: Interval value, e.g. 5 for "5 minutes".
 *
 * Sets the interval that should be used for the default reminder in new
 * appointments.
 **/
void
calendar_config_set_default_reminder_interval (int interval)
{
    gconf_client_set_int (config, CALENDAR_CONFIG_DEFAULT_REMINDER_INTERVAL, interval, NULL);
}

/**
 * calendar_config_get_default_reminder_units:
 *
 * Queries the units of time in which default reminders should be created for
 * new appointments, e.g. CAL_MINUTES for "5 minutes".
 *
 * Return value: Time units for default reminders.
 **/
CalUnits
calendar_config_get_default_reminder_units (void)
{
    char *units;
    CalUnits cu;

    units = gconf_client_get_string (config, CALENDAR_CONFIG_DEFAULT_REMINDER_UNITS, NULL);

    if (units && !strcmp (units, "days"))
        cu = CAL_DAYS;
    else if (units && !strcmp (units, "hours"))
        cu = CAL_HOURS;
    else
        cu = CAL_MINUTES;
    g_free (units);

    return cu;
}

/**
 * calendar_config_set_default_reminder_units:
 * @units: Time units, e.g. CAL_MINUTES for "5 minutes".
 *
 * Sets the units to be used for default reminders in new appointments.
 **/
void
calendar_config_set_default_reminder_units (CalUnits units)
{
    gconf_client_set_string (config, CALENDAR_CONFIG_DEFAULT_REMINDER_UNITS, units_to_string(units), NULL);
}

/**
 * calendar_config_get_hide_completed_tasks_sexp:
 *
 * @get_completed: Whether to form subexpression that 
 * gets completed or not completed tasks.
 * Returns the subexpression to use to filter out completed tasks according
 * to the config settings. The returned sexp should be freed.
 **/
char*
calendar_config_get_hide_completed_tasks_sexp (gboolean get_completed)
{
    char *sexp = NULL;

    if (calendar_config_get_hide_completed_tasks ()) {
        CalUnits units;
        gint value;

        units = calendar_config_get_hide_completed_tasks_units ();
        value = calendar_config_get_hide_completed_tasks_value ();

        if (value == 0) {
            /* If the value is 0, we want to hide completed tasks
               immediately, so we filter out all complete/incomplete tasks.*/
            if (!get_completed)
                sexp = g_strdup ("(not is-completed?)");
            else
                sexp = g_strdup ("(is-completed?)");
        } else {
            char *isodate;
            icaltimezone *zone;
            struct icaltimetype tt;
            time_t t;

            /* Get the current time, and subtract the appropriate
               number of days/hours/minutes. */
            zone = calendar_config_get_icaltimezone ();
            tt = icaltime_current_time_with_zone (zone);

            switch (units) {
            case CAL_DAYS:
                icaltime_adjust (&tt, -value, 0, 0, 0);
                break;
            case CAL_HOURS:
                icaltime_adjust (&tt, 0, -value, 0, 0);
                break;
            case CAL_MINUTES:
                icaltime_adjust (&tt, 0, 0, -value, 0);
                break;
            default:
                g_assert_not_reached ();
            }

            t = icaltime_as_timet_with_zone (tt, zone);

            /* Convert the time to an ISO date string, and build
               the query sub-expression. */
            isodate = isodate_from_time_t (t);
            if (!get_completed)
                sexp = g_strdup_printf ("(not (completed-before? (make-time \"%s\")))", isodate);
            else
                sexp = g_strdup_printf ("(completed-before? (make-time \"%s\"))", isodate);
        }
    }

    return sexp;
}

gchar *
calendar_config_get_free_busy_template (void)
{
    return gconf_client_get_string (config, CALENDAR_CONFIG_TEMPLATE, NULL);
}

void
calendar_config_set_free_busy_template (const gchar *template)
{
    gconf_client_set_string (config, CALENDAR_CONFIG_TEMPLATE, template, NULL);
}

guint 
calendar_config_add_notification_free_busy_template (GConfClientNotifyFunc func, 
                             gpointer data)
{
    guint id;
    
    id = gconf_client_notify_add (config, CALENDAR_CONFIG_TEMPLATE, func, data, 
                      NULL, NULL);
    
    return id;  
}

void
calendar_config_set_dir_path (const gchar *path)
{
    gconf_client_set_string (config, CALENDAR_CONFIG_SAVE_DIR, path, NULL);
}

char *
calendar_config_get_dir_path (void)
{
    char *path;

    path = gconf_client_get_string (config, CALENDAR_CONFIG_SAVE_DIR, NULL);

    return path;
}