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Diffstat (limited to 'anastasis/src/main/java/net/taler/anastasis/shared/Utils.kt')
| -rw-r--r-- | anastasis/src/main/java/net/taler/anastasis/shared/Utils.kt | 80 |
1 files changed, 80 insertions, 0 deletions
diff --git a/anastasis/src/main/java/net/taler/anastasis/shared/Utils.kt b/anastasis/src/main/java/net/taler/anastasis/shared/Utils.kt new file mode 100644 index 0000000..916dd36 --- /dev/null +++ b/anastasis/src/main/java/net/taler/anastasis/shared/Utils.kt @@ -0,0 +1,80 @@ +/* + * 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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