/*

 Copyright (C) 2015 Apple Inc. All Rights Reserved.

 See LICENSE.txt for this sample’s licensing information

 Abstract:

 An EKRSReminderStore subclass that shows how to create recurring timed-based reminders using EKReminder,

         EKAlarm, and EKRecurrenceRule.

 */

#import "EKRSConstants.h"

#import "TimedReminderStore.h"

#import "EKRSReminderStoreUtilities.h"

@implementation TimedReminderStore

+(TimedReminderStore *)sharedInstance

{

    static dispatch_once_t onceToken;

    static TimedReminderStore * timedReminderStoreSharedInstance;

    dispatch_once(&onceToken, ^{

        timedReminderStoreSharedInstance = [[TimedReminderStore alloc] init];

    });

    return timedReminderStoreSharedInstance;

}

#pragma mark - Create Timed-Based Reminder

// Create a timed-based reminder

-(void)createTimedReminder:(TimedReminder *)reminder

{

    EKReminder *myReminder = [EKReminder reminderWithEventStore:self.eventStore];

    myReminder.title = reminder.title;

    myReminder.calendar = self.calendar;

    myReminder.priority = [myReminder priorityMatchingName:reminder.priority];

    // Create the date components of the reminder's start date components

    NSCalendar *gregorian = [[NSCalendar alloc] initWithCalendarIdentifier:NSCalendarIdentifierGregorian];

    NSUInteger unitFlags = NSCalendarUnitSecond | NSCalendarUnitMinute | NSCalendarUnitHour | NSCalendarUnitDay | NSCalendarUnitMonth | NSCalendarUnitYear;

    NSDateComponents *dateComponents = [gregorian components:unitFlags fromDate:reminder.startDate];

    dateComponents.timeZone = myReminder.timeZone;

    // For iOS apps, EventKit requires a start date if a due date was set

    myReminder.startDateComponents = dateComponents;

    myReminder.dueDateComponents = dateComponents;

    // Create a recurrence rule if the reminder repeats itself over a given period of time

    if (![reminder.frequency isEqualToString:EKRSFrequencyNever])

    {

        EKRecurrenceRule *rule  = [[EKRecurrenceRule alloc] init];

        // Fetch the recurrence rule matching the reminder's frequency, then apply it to myReminder

        [myReminder addRecurrenceRule:[rule recurrenceRuleMatchingFrequency:reminder.frequency]];

    }

    // Create an alarm that will fire at a specific date and time

    EKAlarm *alarm = [EKAlarm alarmWithAbsoluteDate:reminder.startDate];

    // Attach an alarm to the reminder

    [myReminder addAlarm:alarm];

    // Attempt to save the reminder

    [self save:myReminder];

}

@end