49 lines
1.4 KiB
Kotlin
49 lines
1.4 KiB
Kotlin
/*
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* SPDX-FileCopyrightText: 2023 Linnea Gräf <nea@nea.moe>
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*
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* SPDX-License-Identifier: GPL-3.0-or-later
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*/
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package moe.nea.firmament.util
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import kotlin.time.Duration
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import kotlin.time.Duration.Companion.milliseconds
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class TimeMark private constructor(private val timeMark: Long) : Comparable<TimeMark> {
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fun passedTime() = if (timeMark == 0L) Duration.INFINITE else (System.currentTimeMillis() - timeMark).milliseconds
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operator fun minus(other: TimeMark): Duration {
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if (other.timeMark == timeMark)
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return 0.milliseconds
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if (other.timeMark == 0L)
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return Duration.INFINITE
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if (timeMark == 0L)
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return -Duration.INFINITE
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return (timeMark - other.timeMark).milliseconds
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}
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companion object {
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fun now() = TimeMark(System.currentTimeMillis())
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fun farPast() = TimeMark(0L)
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fun ago(timeDelta: Duration): TimeMark {
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if (timeDelta.isFinite()) {
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return TimeMark(System.currentTimeMillis() - timeDelta.inWholeMilliseconds)
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}
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require(timeDelta.isPositive())
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return farPast()
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}
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}
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override fun hashCode(): Int {
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return timeMark.hashCode()
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}
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override fun equals(other: Any?): Boolean {
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return other is TimeMark && other.timeMark == timeMark
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}
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override fun compareTo(other: TimeMark): Int {
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return this.timeMark.compareTo(other.timeMark)
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}
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}
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