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/*
* This file is part of GNU Taler
* (C) 2023 Taler Systems S.A.
*
* GNU Taler 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, or (at your option) any later version.
*
* GNU Taler 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
* GNU Taler; see the file COPYING. If not, see <http://www.gnu.org/licenses/>
*/
package net.taler.anastasis.shared
import android.os.Build
import io.matthewnelson.encoding.base32.Base32
import io.matthewnelson.encoding.core.Decoder.Companion.decodeToByteArray
import io.matthewnelson.encoding.core.Encoder.Companion.encodeToString
import kotlinx.coroutines.delay
import kotlinx.coroutines.flow.flow
import kotlinx.datetime.Clock
import kotlinx.datetime.LocalDate
import kotlinx.datetime.TimeZone
import kotlinx.datetime.toJavaLocalDate
import kotlinx.datetime.toLocalDateTime
import kotlinx.serialization.encodeToString
import kotlinx.serialization.json.Json
import org.json.JSONArray
import org.json.JSONObject
import java.nio.charset.Charset
import java.text.SimpleDateFormat
import java.time.format.DateTimeFormatter
import java.util.Locale
import kotlin.time.Duration
object Utils {
fun formatDate(date: LocalDate): String {
val javaDate = date.toJavaLocalDate()
return if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
val formatter = DateTimeFormatter.ofPattern("yyyy-MM-dd")
javaDate.format(formatter)
} else {
val formatter = SimpleDateFormat("yyyy-MM-dd", Locale.getDefault())
formatter.format(date)
}
}
val currentDate: LocalDate
get() = Clock.System.now().toLocalDateTime(TimeZone.currentSystemDefault()).date
inline fun <reified T> Json.encodeToNativeJson(value: T): JSONObject =
JSONObject(encodeToString(value))
inline fun <reified T> Json.encodeToNativeJson(value: Collection<T>): JSONArray =
JSONArray(encodeToString(value))
fun encodeBase32 (input: String) = input
.toByteArray(Charset.defaultCharset())
.encodeToString(Base32.Crockford)
fun encodeBase32 (input: ByteArray) = input
.encodeToString(Base32.Crockford)
fun decodeBase32 (input: String) = input
.decodeToByteArray(Base32.Crockford)
.toString(Charset.defaultCharset())
// Source: https://stackoverflow.com/questions/54827455/how-to-implement-timer-with-kotlin-coroutines/54828055#54828055
fun tickerFlow(period: Duration, initialDelay: Duration = Duration.ZERO) = flow {
delay(initialDelay)
while (true) {
emit(Unit)
delay(period)
}
}
}
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