DateExtension.swift

//
//  DateExtension.swift
//  MYP
//
//  Created by Mudith Chathuranga on 6/15/18.
//  Copyright © 2018 Chathuranga. All rights reserved.
//

import Foundation

extension Date {
    var yesterday: Date {
        return Calendar.current.date(byAdding: .day, value: -1, to: noon)!
    }
    
    var tomorrow: Date {
        return Calendar.current.date(byAdding: .day, value: 1, to: noon)!
    }
    
    var noon: Date {
        return Calendar.current.date(bySettingHour: 12, minute: 0, second: 0, of: self)!
    }
    
    var month: Int {
        return Calendar.current.component(.month,  from: self)
    }
    
    var isLastDayOfMonth: Bool {
        return tomorrow.month != month
    }
    
    func tokenOutDate(minutes: Int) -> Date {
        return Calendar.current.date(byAdding: .minute, value: minutes, to: Date())!
    }
    
    func monthsBack(months: Int) -> Date {
        return Calendar.current.date(byAdding: DateComponents(month: -months, day: 0), to: self)!
    }
    
    func yearsBack(years: Int) -> Date {
        return Calendar.current.date(byAdding: DateComponents(year: -years), to: self)!
    }
    
    func startOfYear() -> Date {
        return Calendar.current.date(from: Calendar.current.dateComponents([.year], from: Calendar.current.startOfDay(for: self)))!
    }
    
    func endOfYear() -> Date {
        return Calendar.current.date(byAdding: DateComponents(year: 1, day: -1), to: self.startOfYear())!
    }
    
    func startOfMonth() -> Date {
        return Calendar.current.date(from: Calendar.current.dateComponents([.year, .month], from: Calendar.current.startOfDay(for: self)))!
    }
    
    func endOfMonth() -> Date {
        return Calendar.current.date(byAdding: DateComponents(month: 1, day: -1), to: self.startOfMonth())!
    }
}