Date+TimeAgo.swift

extension Date {
  var timeAgoSimple: String {
      let deltaSeconds = fabs(timeIntervalSince(Date()))
      let deltaMinutes = deltaSeconds / 60.0

      if deltaSeconds < 60 {
          return "\(Int(deltaSeconds))s"
      } else if deltaMinutes < 60 {
          return "\(Int(deltaMinutes))m"
      } else if deltaMinutes < (24 * 60) {
          return "\(Int(floor(deltaMinutes/60)))h"
      } else if deltaMinutes < (24 * 60 * 7) {
          return "\(Int(floor(deltaMinutes/(60 * 24))))d"
      } else if deltaMinutes < (24 * 60 * 31) {
          return "\(Int(floor(deltaMinutes/(60 * 24 * 7))))w"
      } else if deltaMinutes < (24 * 60 * 365.25) {
          return "\(Int(floor(deltaMinutes/(60 * 24 * 30))))mo"
      }
      return "\(Int(floor(deltaMinutes/(60 * 24 * 365))))yr"
  }
    
  var timeAgo: String {
      let deltaSeconds = fabs(timeIntervalSince(Date()))
      let deltaMinutes = deltaSeconds / 60.0

      if deltaSeconds < 5 {
          return "Just now"
      } else if deltaSeconds < 60 {
          return "\(Int(deltaSeconds)) seconds ago"
      } else if deltaSeconds < 120 {
          return "A minute ago"
      } else if deltaMinutes < 60 {
          return "\(Int(deltaMinutes)) minutes ago"
      } else if deltaMinutes < 120 {
          return "An hour ago"
      } else if deltaMinutes < (24 * 60) {
          return "\(Int(floor(deltaMinutes/60))) hours ago"
      } else if deltaMinutes < (24 * 60 * 2) {
          return "Yesterday"
      } else if deltaMinutes < (24 * 60 * 7) {
          return "\(Int(floor(deltaMinutes/(60 * 24)))) days ago"
      } else if deltaMinutes < (24 * 60 * 14) {
          return "Last week"
      } else if deltaMinutes < (24 * 60 * 31) {
          return "\(Int(floor(deltaMinutes/(60 * 24 * 7)))) weeks ago"
      } else if deltaMinutes < (24 * 60 * 61) {
          return "Last month"
      } else if deltaMinutes < (24 * 60 * 365.25) {
          return "\(Int(floor(deltaMinutes/(60 * 24 * 30)))) months ago"
      } else if deltaMinutes < (24 * 60 * 731) {
          return "Last year"
      }
      return "\(Int(floor(deltaMinutes/(60 * 24 * 365)))) years ago"
  }
}