64 lines
1.8 KiB
Swift
64 lines
1.8 KiB
Swift
//
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// Date+TimeAgo.swift
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// Tusker
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//
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// Created by Shadowfacts on 8/31/18.
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// Copyright © 2018 Shadowfacts. All rights reserved.
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//
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import Foundation
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extension Date {
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private static let unitFlags = Set<Calendar.Component>([.second, .minute, .hour, .day, .weekOfYear, .month, .year])
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func timeAgo() -> (Int, Calendar.Component) {
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let calendar = NSCalendar.current
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let components = calendar.dateComponents(Date.unitFlags, from: self, to: Date())
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if components.year! >= 1 {
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return (components.year!, .year)
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} else if components.month! >= 1 {
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return (components.month!, .month)
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} else if components.weekOfYear! >= 1 {
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return (components.weekOfYear!, .weekOfYear)
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} else if components.day! >= 1 {
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return (components.day!, .day)
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} else if components.hour! >= 1 {
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return (components.hour!, .hour)
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} else if components.minute! >= 1 {
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return (components.minute!, .minute)
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} else {
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return (components.second!, .second)
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}
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}
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func timeAgoString() -> String {
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let (amount, component) = timeAgo()
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switch component {
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case .year:
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return "\(amount)y"
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case .month:
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return "\(amount)mo"
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case .weekOfYear:
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return "\(amount)w"
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case .day:
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return "\(amount)d"
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case .hour:
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return "\(amount)h"
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case .minute:
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return "\(amount)m"
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case .second:
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if amount >= 3 {
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return "\(amount)s"
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} else {
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return "Now"
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}
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default:
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fatalError("Unexpected component: \(component)")
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}
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}
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}
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