package moe.nea.firmament.util.json

import kotlinx.datetime.Instant
import kotlinx.serialization.KSerializer
import kotlinx.serialization.descriptors.PrimitiveKind
import kotlinx.serialization.descriptors.PrimitiveSerialDescriptor
import kotlinx.serialization.descriptors.SerialDescriptor
import kotlinx.serialization.encoding.Decoder
import kotlinx.serialization.encoding.Encoder

object InstantAsLongSerializer : KSerializer<Instant> {
    override val descriptor: SerialDescriptor = PrimitiveSerialDescriptor("InstantAsLongSerializer", PrimitiveKind.LONG)
    override fun deserialize(decoder: Decoder): Instant {
        return Instant.fromEpochMilliseconds(decoder.decodeLong())
    }

    override fun serialize(encoder: Encoder, value: Instant) {
        encoder.encodeLong(value.toEpochMilliseconds())
    }
}