metatext/Extensions/Date+Extensions.swift
2020-08-26 21:04:06 -07:00

81 lines
2.9 KiB
Swift

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