Tusky-App-Android/app/src/main/java/com/keylesspalace/tusky/util/AbsoluteTimeFormatter.kt

60 lines
2.7 KiB
Kotlin

/* Copyright 2022 Tusky Contributors
*
* This file is a part of Tusky.
*
* This program is free software; you can redistribute it and/or modify it under the terms of the
* GNU General Public License as published by the Free Software Foundation; either version 3 of the
* License, or (at your option) any later version.
*
* Tusky is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even
* the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General
* Public License for more details.
*
* You should have received a copy of the GNU General Public License along with Tusky; if not,
* see <http://www.gnu.org/licenses>. */
package com.keylesspalace.tusky.util
import java.text.SimpleDateFormat
import java.util.Calendar
import java.util.Date
import java.util.Locale
import java.util.TimeZone
class AbsoluteTimeFormatter @JvmOverloads constructor(private val tz: TimeZone = TimeZone.getDefault()) {
private val sameDaySdf = SimpleDateFormat("HH:mm", Locale.getDefault()).apply { this.timeZone = tz }
private val sameYearSdf = SimpleDateFormat("MM-dd HH:mm", Locale.getDefault()).apply { this.timeZone = tz }
private val otherYearSdf = SimpleDateFormat("yyyy-MM-dd", Locale.getDefault()).apply { this.timeZone = tz }
private val otherYearCompleteSdf = SimpleDateFormat("yyyy-MM-dd HH:mm", Locale.getDefault()).apply { this.timeZone = tz }
@JvmOverloads
fun format(time: Date?, shortFormat: Boolean = true, now: Date = Date()): String {
return when {
time == null -> "??"
isSameDate(time, now, tz) -> sameDaySdf.format(time)
isSameYear(time, now, tz) -> sameYearSdf.format(time)
shortFormat -> otherYearSdf.format(time)
else -> otherYearCompleteSdf.format(time)
}
}
companion object {
private fun isSameDate(dateOne: Date, dateTwo: Date, tz: TimeZone): Boolean {
val calendarOne = Calendar.getInstance(tz).apply { time = dateOne }
val calendarTwo = Calendar.getInstance(tz).apply { time = dateTwo }
return calendarOne.get(Calendar.YEAR) == calendarTwo.get(Calendar.YEAR) &&
calendarOne.get(Calendar.MONTH) == calendarTwo.get(Calendar.MONTH) &&
calendarOne.get(Calendar.DAY_OF_MONTH) == calendarTwo.get(Calendar.DAY_OF_MONTH)
}
private fun isSameYear(dateOne: Date, dateTwo: Date, timeZone1: TimeZone): Boolean {
val calendarOne = Calendar.getInstance(timeZone1).apply { time = dateOne }
val calendarTwo = Calendar.getInstance(timeZone1).apply { time = dateTwo }
return calendarOne.get(Calendar.YEAR) == calendarTwo.get(Calendar.YEAR)
}
}
}