DiscordRichPresenceUpdate.kt

class DiscordRichPresenceUpdate(private val details: String?, private val state: String?, private val key: String?) {


    fun encode(): PacketBuilder {
        val buffer = PacketBuilder(PACKET_ID, PacketType.BYTE)

        val builder = PacketBuilder()
        var mask: Byte = 0

        if (details != null) {
            mask = mask xor DETAILS_MASK
            builder.putString(details)
        }


        if (state != null) {
            mask = mask xor STATE_MASK
            builder.putString(state)
        }


        if (key != null) {
            mask = mask xor KEY_MASK
            builder.putString(key)
        }


        buffer.putByte(mask)
        builder.writeTo(buffer)


        return buffer
    }


    companion object {


        const val PACKET_ID = 131


        const val DETAILS_MASK: Byte = 0x1


        const val STATE_MASK: Byte = 0x2


        const val KEY_MASK: Byte = 0x4


        //leaves 5 bits reserved for later usage


    }


}