package dev.inmo.tgbotapi.types

import korlibs.time.DateTime
import dev.inmo.tgbotapi.utils.RiskFeature
import kotlinx.serialization.*
import kotlinx.serialization.builtins.serializer
import kotlinx.serialization.descriptors.SerialDescriptor
import kotlinx.serialization.encoding.Decoder
import kotlinx.serialization.encoding.Encoder

@Serializable(TelegramDateSerializer::class)
data class TelegramDate(
    /**
     * Contains UNIX time (seconds)
     */
    internal val date: Long
) {
    constructor(dateTime: DateTime) : this(
        dateTime.unixMillisLong / 1000
    )

    @Transient
    val asDate: DateTime = DateTime(
        date * 1000
    )
}

fun DateTime.toTelegramDate(): TelegramDate = TelegramDate(this)

@RiskFeature
object TelegramDateSerializer : KSerializer<TelegramDate> {
    override val descriptor: SerialDescriptor = Long.serializer().descriptor

    override fun serialize(encoder: Encoder, value: TelegramDate) {
        encoder.encodeLong(
            value.date
        )
    }

    override fun deserialize(decoder: Decoder): TelegramDate {
        return TelegramDate(
            decoder.decodeLong()
        )
    }
}