Make dates nicer, very quick hack

NicerDates.swift

//
//  NicerDates.swift
//
//  Created by Ben Taylor on 20/07/2015.
//

import Foundation


extension Int {
	func days() -> NSDateComponents {
		var components = NSDateComponents()
		components.day = self
		return components
	}
	
	func day() -> NSDateComponents {
		return days()
	}
	
	func weeks() -> NSDateComponents {
		var components = NSDateComponents()
		components.day = 7*self
		return components
	}
	
	func week() -> NSDateComponents {
		return weeks()
	}

	
	func months() -> NSDateComponents {
		var components = NSDateComponents()
		components.month = self
		return components
	}
	
	func month() -> NSDateComponents {
		return months()
	}
	
	func years() -> NSDateComponents {
		var components = NSDateComponents()
		components.year = self
		return components
	}
	
	func year() -> NSDateComponents {
		return years()
	}
	
	func am() -> NSDateComponents {
		return hours()
	}
	
	func pm() -> NSDateComponents {
		return (self + 12).hours()
	}
	
	func hours() -> NSDateComponents {
		var components = NSDateComponents()
		components.hour = self
		return components
	}
	
	func hour() -> NSDateComponents {
		return hours()
	}
}

extension NSDateComponents {
	func fromNow() -> NSDate {
		return fromDate(NSDate())
	}
	
	func fromDate(date: NSDate) -> NSDate {
		let calendar = NSCalendar.currentCalendar()
		return calendar.dateByAddingComponents(self, toDate: date, options: NSCalendarOptions.allZeros)!
	}
}

extension NSDate {
	func onSunday() -> NSDate {
		let calendar = NSCalendar.currentCalendar()
		var dateComponents = calendar.components((.WeekdayCalendarUnit | .WeekOfMonthCalendarUnit | .MonthCalendarUnit | .YearCalendarUnit | .HourCalendarUnit), fromDate: self)
		dateComponents.weekday = 7
		return calendar.dateFromComponents(dateComponents)!
	}
	
	func at(hourDateComponents: NSDateComponents) -> NSDate {
		let calendar = NSCalendar.currentCalendar()
		var dateComponents = calendar.components((.WeekdayCalendarUnit | .WeekOfMonthCalendarUnit | .MonthCalendarUnit | .YearCalendarUnit | .HourCalendarUnit), fromDate: self)
		dateComponents.hour = hourDateComponents.hour
		return calendar.dateFromComponents(dateComponents)!
	}
}