com.github.yizzuide.milkomeda.util.DateExtensionsKt.kt Maven / Gradle / Ivy

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/*
 * Copyright (c) 2022 yizzuide All rights Reserved.
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in all
 * copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 * SOFTWARE.
 */

@file:JvmName("Dates")
package com.github.yizzuide.milkomeda.util

import java.time.Instant
import java.time.LocalDate
import java.time.ZoneId
import java.util.*

/**
 * DateExtensionsKt
 *
 *
 * @author yizzuide
 * @since 3.14.0
 * 

 * Create at 2022/09/27 00:57
 */
class DateExtensionsKt {
}

fun timestamp2Date(timestamp: Long): Date? {
    if (timestamp < 0) {
        return null
    }
    val instant = Instant.ofEpochMilli(timestamp)
    return Date.from(instant)
}

fun date2Timestamp(date: Date?): Long = date?.time ?: -1

fun timestampOfDays(days: Long): Long = LocalDate.now().plusDays(days).
    atStartOfDay(ZoneId.systemDefault()).toInstant().toEpochMilli() - System.currentTimeMillis()