import Foundation
import TimeLapse

let currentDate  = Date()
let fakePastDate = Calendar.current.date(byAdding: .second, value: -600, to: currentDate)! // 10 minutes ago

let timeLapse = fakePastDate.elapsedTime(until: currentDate)

print(timeLapse) // 10min

let dateFormatter = DateFormatter()
dateFormatter.dateFormat = "dd/MM/yyyy HH:mm:ss"

let fakeCurrentDate = dateFormatter.date(from: "24/12/2018 23:59:59")!

// some test dates
let date0  = dateFormatter.date(from: "24/12/2018 23:59:58")!
let date1  = dateFormatter.date(from: "24/12/2018 23:59:09")!
let date2  = dateFormatter.date(from: "24/12/2018 23:52:59")!
let date3  = dateFormatter.date(from: "24/12/2018 18:59:59")!
let date4  = dateFormatter.date(from: "23/12/2018 23:59:59")!
let date5  = dateFormatter.date(from: "09/12/2018 23:59:59")!
let date6  = dateFormatter.date(from: "24/11/2018 23:59:59")!
let date7  = dateFormatter.date(from: "24/12/2016 23:59:59")!

date0.elapsedTime(until: fakeCurrentDate)
date1.elapsedTime(until: fakeCurrentDate)
date2.elapsedTime(until: fakeCurrentDate)
date3.elapsedTime(until: fakeCurrentDate)
date4.elapsedTime(until: fakeCurrentDate)
date5.elapsedTime(until: fakeCurrentDate)
date6.elapsedTime(until: fakeCurrentDate)
date7.elapsedTime(until: fakeCurrentDate)

2.shortTimeLapse()
10.shortTimeLapse()
1800.shortTimeLapse()
43200.shortTimeLapse()
172_800.shortTimeLapse()
604_800.shortTimeLapse()
15_552_000.shortTimeLapse()
31_536_000.shortTimeLapse()

struct CustomTimeLapseFormat: TimeLapseFormat {

    var now    : String = "now"
    var second : String = "sec"
    var minute : String = "m"
    var hour   : String = "hour"
    var day    : String = "d"
    var week   : String = "w"
    var month  : String = "mon"
    var year   : String = "y"

}

TimeLapse.format = CustomTimeLapseFormat()

0.shortTimeLapse()
10.shortTimeLapse()
1800.shortTimeLapse()
7200.shortTimeLapse()
604_799.shortTimeLapse()
2_591_999.shortTimeLapse()
31_535_999.shortTimeLapse()
630_720_000.shortTimeLapse()

TimeLapse.enableDefaultFormat()