/* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8 -*- */

#include <config.h>
#include <gnome.h>
#include <cal-util/timeutil.h>
#include <gui/event-editor-utils.h>
#include <gui/event-editor.h>

typedef struct {
	GladeXML *gui;
	GtkWidget *dialog;
	GnomeCalendar *gnome_cal;
	iCalObject *ical;
} EventEditorDialog;


extern int day_begin, day_end;
extern char *user_name;
extern int am_pm_flag;
extern int week_starts_on_monday;


static void
fill_in_dialog_from_ical (EventEditorDialog *dialog)
{
	iCalObject *ical = dialog->ical;
	GladeXML *gui = dialog->gui;

	store_to_editable (gui, "general-owner",
			  dialog->ical->organizer->addr ?
			  dialog->ical->organizer->addr : _("?"));

	store_to_editable (gui, "general-summary", ical->summary);

	/* start and end time */
	store_to_gnome_dateedit (gui, "start-time", ical->dtstart);
	store_to_gnome_dateedit (gui, "end-time", ical->dtend);

	/* all day event checkbox */
	if (get_time_t_hour (ical->dtstart) <= day_begin &&
	    get_time_t_hour (ical->dtend) >= day_end)
		store_to_toggle (gui, "all-day-event", TRUE);
	else
		store_to_toggle (gui, "all-day-event", FALSE);

	/* alarms */
	store_to_toggle (gui, "alarm-display", ical->dalarm.enabled);
	store_to_toggle (gui, "alarm-program", ical->palarm.enabled);
	store_to_toggle (gui, "alarm-audio", ical->aalarm.enabled);
	store_to_toggle (gui, "alarm-mail", ical->malarm.enabled);

	/* alarm counts */
	store_to_spin (gui, "alarm-display-amount", ical->dalarm.count);
	store_to_spin (gui, "alarm-audio-amount", ical->aalarm.count);
	store_to_spin (gui, "alarm-program-amount", ical->palarm.count);
	store_to_spin (gui, "alarm-mail-amount", ical->malarm.count);

	store_to_alarm_unit (gui, "alarm-display-unit", ical->dalarm.units);
	store_to_alarm_unit (gui, "alarm-audio-unit", ical->aalarm.units);
	store_to_alarm_unit (gui, "alarm-program-unit", ical->palarm.units);
	store_to_alarm_unit (gui, "alarm-mail-unit", ical->malarm.units);

	store_to_editable (gui, "run-program", ical->palarm.data);
	store_to_editable (gui, "mail-to", ical->malarm.data);

	/* classification */
	if (strcmp (ical->class, "PUBLIC") == 0)
	    	store_to_toggle (gui, "classification-public", TRUE);
	if (strcmp (ical->class, "PRIVATE") == 0)
	    	store_to_toggle (gui, "classification-private", TRUE);
	if (strcmp (ical->class, "CONFIDENTIAL") == 0)
		store_to_toggle (gui, "classification-confidential", TRUE);

	/* recurrence rules */

	if (! ical->recur)
		return;

	switch (ical->recur->type) {
	case RECUR_DAILY:
		store_to_toggle (gui, "recurrence-rule-daily", TRUE);
		store_to_spin (gui, "recurrence-rule-daily-days", ical->recur->interval);
		break;
	case RECUR_WEEKLY:
		store_to_toggle (gui, "recurrence-rule-weekly", TRUE);
		store_to_spin (gui, "recurrence-rule-weekly-weeks", ical->recur->interval);
		if (ical->recur->weekday & (1 << 0))
			store_to_toggle (gui, "recurrence-rule-weekly-sun", TRUE);
		if (ical->recur->weekday & (1 << 1))
			store_to_toggle (gui, "recurrence-rule-weekly-mon", TRUE);
		if (ical->recur->weekday & (1 << 2))
			store_to_toggle (gui, "recurrence-rule-weekly-tue", TRUE);
		if (ical->recur->weekday & (1 << 3))
			store_to_toggle (gui, "recurrence-rule-weekly-wed", TRUE);
		if (ical->recur->weekday & (1 << 4))
			store_to_toggle (gui, "recurrence-rule-weekly-thu", TRUE);
		if (ical->recur->weekday & (1 << 5))
			store_to_toggle (gui, "recurrence-rule-weekly-fri", TRUE);
		if (ical->recur->weekday & (1 << 6))
			store_to_toggle (gui, "recurrence-rule-weekly-sat", TRUE);
		break;
	case RECUR_MONTHLY_BY_DAY:
		store_to_toggle (gui, "recurrence-rule-monthly", TRUE);
		store_to_toggle (gui, "recurrence-rule-monthly-on-day", TRUE);
		store_to_spin (gui, "recurrence-rule-monthly-day", ical->recur->u.month_day);
		store_to_spin (gui, "recurrence-rule-monthly-every-n-months", ical->recur->interval);
		break;
	case RECUR_MONTHLY_BY_POS:
		store_to_toggle (gui, "recurrence-rule-monthly", TRUE);
		store_to_toggle (gui, "recurrence-rule-monthly-weekday", TRUE);
		store_to_option (gui, "recurrence-rule-monthly-week", ical->recur->u.month_pos);
		store_to_option (gui, "recurrence-rule-monthly-day", ical->recur->weekday);
		store_to_spin (gui, "recurrence-rule-monthly-every-n-months", ical->recur->interval);
		break;
	case RECUR_YEARLY_BY_DAY:
	case RECUR_YEARLY_BY_MONTH:
		store_to_toggle (gui, "recurrence-rule-yearly", TRUE);
		store_to_spin (gui, "recurrence-rule-yearly-every-n-years", ical->recur->interval);
		break;
	}

	/* recurrence ending date */
	if (ical->recur->duration != 0) {
		store_to_toggle (gui, "recurrence-ending-date-end-after", TRUE);
		store_to_spin (gui, "recurrence-ending-date-end-after-count", ical->recur->duration);
	}
	else if (ical->recur->enddate != 0) {
		store_to_toggle (gui, "recurrence-ending-date-end-on", TRUE);
		/* Shorten by one day, as we store end-on date a day ahead */
		store_to_gnome_dateedit (gui, "recurrence-ending-date-end-on-date", ical->recur->enddate - 86400);
	}
	/* else repeat forever */
}


static void
fill_in_dialog_from_defaults (EventEditorDialog *dialog)
{
	time_t now = time (NULL);
	time_t soon = time_add_minutes (now, 30);

	store_to_editable (dialog->gui, "general-owner", "?");

	/* start and end time */
	store_to_gnome_dateedit (dialog->gui, "start-time", now);
	store_to_gnome_dateedit (dialog->gui, "end-time", soon);
}


static void
dialog_to_ical (EventEditorDialog *dialog)
{
	iCalObject *ical = dialog->ical;
	gboolean all_day_event;
	GladeXML *gui = dialog->gui;

	/* general event information */

	if (ical->summary)
		g_free (ical->summary);
	ical->summary  = extract_from_editable (gui, "general-summary");

	ical->dtstart = extract_from_gnome_dateedit (gui, "start-time");
	ical->dtend = extract_from_gnome_dateedit (gui, "end-time");

	all_day_event = extract_from_toggle (gui, "all-day-event");

	ical->dalarm.enabled = extract_from_toggle (gui, "alarm-display");
	ical->aalarm.enabled = extract_from_toggle (gui, "alarm-program");
	ical->palarm.enabled = extract_from_toggle (gui, "alarm-audio");
	ical->malarm.enabled = extract_from_toggle (gui, "alarm-mail");

	ical->dalarm.count = extract_from_spin (gui, "alarm-display-amount");
	ical->aalarm.count = extract_from_spin (gui, "alarm-audio-amount");
	ical->palarm.count = extract_from_spin (gui, "alarm-program-amount");
	ical->malarm.count = extract_from_spin (gui, "alarm-mail-amount");

	ical->dalarm.units = extract_from_alarm_unit (gui, "alarm-display-unit");
	ical->aalarm.units = extract_from_alarm_unit (gui, "alarm-audio-unit");
	ical->palarm.units = extract_from_alarm_unit (gui, "alarm-program-unit");
	ical->malarm.units = extract_from_alarm_unit (gui, "alarm-mail-unit");

	ical->palarm.data = g_strdup (extract_from_editable (gui, "run-program"));
	ical->malarm.data = g_strdup (extract_from_editable (gui, "mail-to"));

	if (extract_from_toggle (gui, "classification-public"))
		ical->class = g_strdup ("PUBLIC");
	else if (extract_from_toggle (gui, "classification-private"))
		ical->class = g_strdup ("PRIVATE");
	else /* "classification-confidential" */
		ical->class = g_strdup ("CONFIDENTIAL");


	/* recurrence information */

	if (extract_from_toggle (gui, "recurrence-rule-none"))
		return; /* done */
	if (!ical->recur)
		ical->recur = g_new0 (Recurrence, 1);

	if (extract_from_toggle (gui, "recurrence-rule-daily")) {
		ical->recur->type = RECUR_DAILY;
		ical->recur->interval = extract_from_spin (gui, "recurrence-rule-daily-days");
	}
	if (extract_from_toggle (gui, "recurrence-rule-weekly")) {
		ical->recur->type = RECUR_WEEKLY;
		ical->recur->interval = extract_from_spin (gui, "recurrence-rule-weekly-weeks");
		ical->recur->weekday = 0;

		if (extract_from_toggle (gui, "recurrence-rule-weekly-sun"))
			ical->recur->weekday |= 1 << 0;
		if (extract_from_toggle (gui, "recurrence-rule-weekly-mon"))
			ical->recur->weekday |= 1 << 1;
		if (extract_from_toggle (gui, "recurrence-rule-weekly-tue"))
			ical->recur->weekday |= 1 << 2;
		if (extract_from_toggle (gui, "recurrence-rule-weekly-wed"))
			ical->recur->weekday |= 1 << 3;
		if (extract_from_toggle (gui, "recurrence-rule-weekly-thu"))
			ical->recur->weekday |= 1 << 4;
		if (extract_from_toggle (gui, "recurrence-rule-weekly-fri"))
			ical->recur->weekday |= 1 << 5;
		if (extract_from_toggle (gui, "recurrence-rule-weekly-sat"))
			ical->recur->weekday |= 1 << 6;
	}
	if (extract_from_toggle (gui, "recurrence-rule-monthly")) {
		if (extract_from_toggle (gui, "recurrence-rule-monthly-on-day")) {
			/* by day of in the month (ex: the 5th) */
			ical->recur->type = RECUR_MONTHLY_BY_DAY;
			ical->recur->u.month_day = extract_from_spin (gui, "recurrence-rule-monthly-day");

		}
		else {  /* "recurrence-rule-monthly-weekday" is TRUE */ 
			/* by position on the calender (ex: 2nd monday) */
			ical->recur->type = RECUR_MONTHLY_BY_POS;
			ical->recur->u.month_pos = extract_from_option (gui, "recurrence-rule-monthly-week");
			ical->recur->weekday = extract_from_option (gui, "recurrence-rule-monthly-day");
		}
		ical->recur->interval = extract_from_spin (gui, "recurrence-rule-monthly-every-n-months");
	}
	if (extract_from_toggle (gui, "recurrence-rule-yearly")) {
		ical->recur->type = RECUR_YEARLY_BY_DAY;
		ical->recur->interval = extract_from_spin (gui, "recurrence-rule-yearly-every-n-years");
		/* FIXME: need to specify anything else?  I am assuming the code will look at the dtstart
		 * to figure out when to recur. - Federico
		 */
	}

	/* recurrence ending date */
	if (extract_from_toggle (gui, "recurrence-ending-date-repeat-forever")) {
		ical->recur->_enddate = 0;
		ical->recur->enddate = 0;
		ical->recur->duration = 0;
	}
	if (extract_from_toggle (gui, "recurrence-ending-date-end-on")) {
		/* Also here, to ensure that the event is used, we add 86400 secs to get 
		   get next day, in accordance to the RFC */
		ical->recur->_enddate = extract_from_gnome_dateedit (gui, "recurrence-ending-date-end-on-date") + 86400;
		ical->recur->enddate = ical->recur->_enddate;
		ical->recur->duration = 0;
	}
	if (extract_from_toggle (gui, "recurrence-ending-date-end-after")) {
		ical->recur->duration = extract_from_spin (gui, "recurrence-ending-date-end-after-count");
		ical_object_compute_end (ical);
	}
}


static void
ee_ok (GtkWidget *widget, EventEditorDialog *dialog)
{
	dialog_to_ical (dialog);

	if (dialog->ical->new)
		gnome_calendar_add_object (dialog->gnome_cal, dialog->ical);
	else
		gnome_calendar_object_changed (dialog->gnome_cal,
					       dialog->ical,
					       CHANGE_ALL);
	dialog->ical->new = 0;
}


static void
ee_cancel (GtkWidget *widget, EventEditorDialog *dialog)
{
	if (dialog->ical) {
		ical_object_unref (dialog->ical);
		dialog->ical = NULL;
	}
}


static void
recurrence_toggled (GtkWidget *radio, EventEditorDialog *dialog)
{
	GtkWidget *recurrence_rule_notebook = glade_xml_get_widget (dialog->gui, "recurrence-rule-notebook");

	GtkWidget *recurrence_rule_none = glade_xml_get_widget (dialog->gui, "recurrence-rule-none");
	GtkWidget *recurrence_rule_daily = glade_xml_get_widget (dialog->gui, "recurrence-rule-daily");
	GtkWidget *recurrence_rule_weekly = glade_xml_get_widget (dialog->gui, "recurrence-rule-weekly");
	GtkWidget *recurrence_rule_monthly = glade_xml_get_widget (dialog->gui, "recurrence-rule-monthly");
	GtkWidget *recurrence_rule_yearly = glade_xml_get_widget (dialog->gui, "recurrence-rule-yearly");

	if (radio == recurrence_rule_none)
		gtk_notebook_set_page (GTK_NOTEBOOK (recurrence_rule_notebook), 0);
	if (radio == recurrence_rule_daily)
		gtk_notebook_set_page (GTK_NOTEBOOK (recurrence_rule_notebook), 1);
	if (radio == recurrence_rule_weekly)
		gtk_notebook_set_page (GTK_NOTEBOOK (recurrence_rule_notebook), 2);
	if (radio == recurrence_rule_monthly)
		gtk_notebook_set_page (GTK_NOTEBOOK (recurrence_rule_notebook), 3);
	if (radio == recurrence_rule_yearly)
		gtk_notebook_set_page (GTK_NOTEBOOK (recurrence_rule_notebook), 4);
}



GtkWidget *event_editor_new (GnomeCalendar *gcal, iCalObject *ical)
{
	EventEditorDialog *dialog = g_new0 (EventEditorDialog, 1);

	dialog->ical = ical;
	dialog->gnome_cal = gcal;

	printf ("glade_xml_new (%s, NULL)\n",
		EVOLUTION_GLADEDIR "/event-editor-dialog.glade");

	dialog->gui = glade_xml_new (EVOLUTION_GLADEDIR
				     "/event-editor-dialog.glade",
				     NULL);

	dialog->dialog = glade_xml_get_widget (dialog->gui,
					       "event-editor-dialog");

	gnome_dialog_button_connect (GNOME_DIALOG (dialog->dialog),
				     0, GTK_SIGNAL_FUNC(ee_ok), dialog);
	gnome_dialog_button_connect (GNOME_DIALOG (dialog->dialog),
				     1, GTK_SIGNAL_FUNC(ee_cancel), dialog);


	{
		GtkWidget *recurrence_rule_none = glade_xml_get_widget (dialog->gui, "recurrence-rule-none");
		GtkWidget *recurrence_rule_daily = glade_xml_get_widget (dialog->gui, "recurrence-rule-daily");
		GtkWidget *recurrence_rule_weekly = glade_xml_get_widget (dialog->gui, "recurrence-rule-weekly");
		GtkWidget *recurrence_rule_monthly = glade_xml_get_widget (dialog->gui, "recurrence-rule-monthly");
		GtkWidget *recurrence_rule_yearly = glade_xml_get_widget (dialog->gui, "recurrence-rule-yearly");

		gtk_signal_connect (GTK_OBJECT (recurrence_rule_none), "toggled",
				    GTK_SIGNAL_FUNC (recurrence_toggled), dialog);
		gtk_signal_connect (GTK_OBJECT (recurrence_rule_daily), "toggled",
				    GTK_SIGNAL_FUNC (recurrence_toggled), dialog);
		gtk_signal_connect (GTK_OBJECT (recurrence_rule_weekly), "toggled",
				    GTK_SIGNAL_FUNC (recurrence_toggled), dialog);
		gtk_signal_connect (GTK_OBJECT (recurrence_rule_monthly), "toggled",
				    GTK_SIGNAL_FUNC (recurrence_toggled), dialog);
		gtk_signal_connect (GTK_OBJECT (recurrence_rule_yearly), "toggled",
				    GTK_SIGNAL_FUNC (recurrence_toggled), dialog);
		
	}



	if (ical->new)
		fill_in_dialog_from_defaults (dialog);
	else
		fill_in_dialog_from_ical (dialog);
	

	gnome_dialog_run (GNOME_DIALOG(dialog->dialog));

	gnome_dialog_close (GNOME_DIALOG(dialog->dialog));

	return dialog->dialog;
}


void event_editor_new_whole_day (GnomeCalendar *owner, time_t day)
{
}



GtkWidget *make_date_edit (void)
{
	return date_edit_new (time (NULL), TRUE);
}

 
GtkWidget *date_edit_new (time_t the_time, int show_time)
{
	return gnome_date_edit_new_flags (the_time,
				  ((show_time ? GNOME_DATE_EDIT_SHOW_TIME : 0)
				   | (am_pm_flag ? 0 : GNOME_DATE_EDIT_24_HR)
				   | (week_starts_on_monday
				      ? GNOME_DATE_EDIT_WEEK_STARTS_ON_MONDAY
				      : 0)));
}



GtkWidget *
make_spin_button (int val, int low, int high)
{
	GtkAdjustment *adj;
	GtkWidget *spin;

	adj = GTK_ADJUSTMENT (gtk_adjustment_new (val, low, high, 1, 10, 10));
	spin = gtk_spin_button_new (adj, 0.5, 0);
	gtk_widget_set_usize (spin, 60, 0);

	return spin;
}


/* todo

   build some of the recur stuff by hand to take into account
   the start-on-monday preference?

   make the alarm controls insensitive until you enable them

   get reading and storing of all_day_event to work

   if you set the start time and it is after the end time, change
   the end time

   get the apply button to work right

   make the properties stuff unglobal

   figure out why alarm units aren't sticking between edits

   extract from and store to the ending date in the recurrence rule stuff

   finish the recurrence rule exceptions

 */