82 lines
2.9 KiB
Swift
82 lines
2.9 KiB
Swift
// Copyright © 2020 Metabolist. All rights reserved.
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import Foundation
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extension Date {
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var timeAgo: String? {
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let calendar = Calendar.autoupdatingCurrent
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let now = Date()
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if
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let oneMinuteAgo = calendar.date(byAdding: DateComponents(minute: -1), to: now),
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oneMinuteAgo < self {
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Self.abbreviatedDateComponentsFormatter.allowedUnits = [.second]
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} else if
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let oneHourAgo = calendar.date(byAdding: DateComponents(hour: -1), to: now),
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oneHourAgo < self {
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Self.abbreviatedDateComponentsFormatter.allowedUnits = [.minute]
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} else if
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let oneDayAgo = calendar.date(byAdding: DateComponents(day: -1), to: now),
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oneDayAgo < self {
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Self.abbreviatedDateComponentsFormatter.allowedUnits = [.hour]
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} else if
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let oneWeekAgo = calendar.date(byAdding: DateComponents(weekOfMonth: -1), to: now),
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oneWeekAgo < self {
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Self.abbreviatedDateComponentsFormatter.allowedUnits = [.day]
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} else {
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return Date.shortDateStyleRelativeDateFormatter.string(from: self)
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}
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return Self.abbreviatedDateComponentsFormatter.string(from: self, to: now)
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}
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var fullUnitTimeUntil: String? {
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let calendar = Calendar.autoupdatingCurrent
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let now = Date()
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if
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let oneDayFromNow = calendar.date(byAdding: DateComponents(day: 1), to: now),
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self > oneDayFromNow {
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Self.fullDateComponentsFormatter.allowedUnits = [.day]
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} else if
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let oneHourFromNow = calendar.date(byAdding: DateComponents(hour: 1), to: now),
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self > oneHourFromNow {
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Self.fullDateComponentsFormatter.allowedUnits = [.hour]
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} else if
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let oneMinuteFromNow = calendar.date(byAdding: DateComponents(minute: 1), to: now),
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self > oneMinuteFromNow {
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Self.fullDateComponentsFormatter.allowedUnits = [.minute]
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} else {
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Self.fullDateComponentsFormatter.allowedUnits = [.second]
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}
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return Self.fullDateComponentsFormatter.string(from: now, to: self)
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}
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}
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private extension Date {
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private static let abbreviatedDateComponentsFormatter: DateComponentsFormatter = {
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let dateComponentsFormatter = DateComponentsFormatter()
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dateComponentsFormatter.unitsStyle = .abbreviated
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return dateComponentsFormatter
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}()
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private static let fullDateComponentsFormatter: DateComponentsFormatter = {
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let dateComponentsFormatter = DateComponentsFormatter()
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dateComponentsFormatter.unitsStyle = .full
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return dateComponentsFormatter
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}()
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private static let shortDateStyleRelativeDateFormatter: DateFormatter = {
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let dateFormatter = DateFormatter()
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dateFormatter.dateStyle = .short
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return dateFormatter
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}()
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}
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