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package moe.nea.ledger
import com.mojang.util.UUIDTypeAdapter
import io.azam.ulidj.ULID
import net.minecraft.client.Minecraft
import java.time.Instant
import java.util.UUID
import kotlin.random.Random
object UUIDUtil {
@JvmInline
value class ULIDWrapper(
val wrapped: String
) {
fun getTimestamp(): Instant {
return Instant.ofEpochMilli(ULID.getTimestamp(wrapped))
}
init {
require(ULID.isValid(wrapped))
}
}
fun parseDashlessUuid(string: String) = UUIDTypeAdapter.fromString(string)
val NIL_UUID = UUID(0L, 0L)
fun getPlayerUUID(): UUID {
val currentUUID = Minecraft.getMinecraft().thePlayer?.uniqueID
?: Minecraft.getMinecraft().session?.playerID?.let(::parseDashlessUuid)
?: lastKnownUUID
lastKnownUUID = currentUUID
return currentUUID
}
fun createULIDAt(timestamp: Instant): ULIDWrapper {
return ULIDWrapper(ULID.generate(
timestamp.toEpochMilli(),
Random.nextBytes(10)
))
}
private var lastKnownUUID: UUID = NIL_UUID
}
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