//
//  CalendarSensor.m
//  Pennyworth
//
//  Created by Chris Karr on 6/12/08.
//  Copyright 2008 Chris Karr. All rights reserved.
//

#import "CalendarSensor.h"
#import <CalendarStore/CalendarStore.h>
#import "Context.h"
#import "SensorsController.h"

#define SENSOR_NAME @"Calendar"

#define CALENDAR_SCAN @"Calendar_Scan"

@implementation CalendarSensor

- (void) awakeFromNib
{
	[[SensorsController sharedController] addSensor:SENSOR_NAME];
	[[[NSTimer scheduledTimerWithTimeInterval:30.0 target:self selector:@selector(update:) userInfo:nil repeats:YES] retain] fire];
}

- (void) update:(NSTimer *) theTimer
{
	if (![[SensorsController sharedController] canFire:SENSOR_NAME])
		return;
	
	NSCalendarDate * now = [NSCalendarDate date];

	NSCalendarDate * startDate = [NSCalendarDate dateWithYear:[now yearOfCommonEra] 
														month:[now monthOfYear] 
														  day:[now dayOfMonth]
														 hour:0 
													   minute:0 
													   second:0 
													 timeZone:nil];

	NSCalendarDate * endDate = [NSCalendarDate dateWithYear:[now yearOfCommonEra] 
													  month:[now monthOfYear] 
														day:[now dayOfMonth]
													   hour:24 
													 minute:59 
													 second:59
												   timeZone:nil];
	
	for (CalCalendar * calendar in [[CalCalendarStore defaultCalendarStore] calendars])
	{
		NSPredicate * today = [CalCalendarStore eventPredicateWithStartDate:startDate 
																	endDate:endDate
																  calendars:[NSArray arrayWithObject:calendar]];
	
		NSArray * events = [[CalCalendarStore defaultCalendarStore] eventsWithPredicate:today];

		NSMutableArray * titles = [NSMutableArray array];

		for (CalEvent * event in events)
		{
			if ([[event endDate] timeIntervalSinceNow] >= 0 && [[event startDate] timeIntervalSinceNow] <= 0)
				[titles addObject:event.title];
		}

		NSMutableDictionary * note = [NSMutableDictionary dictionary];
		[note setValue:[NSString stringWithFormat:@"Calendar Sensor (%@)", calendar.title] forKey:OBSERVATION_SENSOR];
		[note setValue:titles forKey:OBSERVATION_OBSERVATION];
		[note setValue:[NSNumber numberWithInteger:60] forKey:OBSERVATION_LIFESPAN];
		[[NSNotificationCenter defaultCenter] postNotificationName:OBSERVATION_UPDATE object:self userInfo:note];

		note = [NSMutableDictionary dictionary];
		[note setValue:[NSString stringWithFormat:@"Active Event Count (%@)", calendar.title] forKey:OBSERVATION_SENSOR];
		[note setValue:[NSNumber numberWithInteger:[titles count]] forKey:OBSERVATION_OBSERVATION];
		[note setValue:[NSNumber numberWithInteger:60] forKey:OBSERVATION_LIFESPAN];
		[[NSNotificationCenter defaultCenter] postNotificationName:OBSERVATION_UPDATE object:self userInfo:note];
		
	}
}
	
@end