package com.sw.dualscreen.utils

import java.time.LocalDateTime
import java.time.ZoneId
import java.time.format.DateTimeFormatter
import java.util.Date


object DateTimeUtil {

    const val YYYY_MM_DD_HH_MM_SS = "yyyy-MM-dd HH:mm:ss"

    fun formatDateTime(dateTime: LocalDateTime, pattern: String = YYYY_MM_DD_HH_MM_SS): String {
        val formatter = DateTimeFormatter.ofPattern(pattern)
        return dateTime.format(formatter)
    }

    fun convert(dateStr: String, pattern: String = YYYY_MM_DD_HH_MM_SS): Date {
        val formatter = DateTimeFormatter.ofPattern(pattern)
        val ldt = LocalDateTime.parse(dateStr, formatter)
        val zdt = ldt.atZone(ZoneId.systemDefault())
        return Date.from(zdt.toInstant())
    }

    fun main() {
        val now = LocalDateTime.now()
        println("默认格式: ${formatDateTime(now)}")
        println("自定义格式: ${formatDateTime(now, "yyyy年MM月dd日 HH时mm分ss秒")}")
    }


}