package net.shadowfacts.phycon.networking

import net.fabricmc.fabric.api.networking.v1.PacketByteBufs
import net.fabricmc.fabric.api.networking.v1.PacketSender
import net.minecraft.network.Packet
import net.minecraft.network.PacketByteBuf
import net.minecraft.server.MinecraftServer
import net.minecraft.server.network.ServerPlayNetworkHandler
import net.minecraft.server.network.ServerPlayerEntity
import net.minecraft.util.Identifier
import net.minecraft.util.registry.Registry
import net.minecraft.util.registry.RegistryKey
import net.shadowfacts.phycon.PhysicalConnectivity
import net.shadowfacts.phycon.api.util.IPAddress
import net.shadowfacts.phycon.network.block.redstone.RedstoneControllerBlockEntity
import net.shadowfacts.phycon.util.RedstoneMode

/**
 * @author shadowfacts
 */
object C2SConfigureRedstoneController: ServerReceiver {
	// todo: it would be nice if there wasn't so much duplication with C2SConfigureActivationMode

	override val CHANNEL = Identifier(PhysicalConnectivity.MODID, "configure_redstone_controller")

	operator fun invoke(be: RedstoneControllerBlockEntity): Packet<*> {
		val buf = PacketByteBufs.create()

		buf.writeIdentifier(be.world!!.registryKey.value)
		buf.writeBlockPos(be.pos)
		buf.writeString(be.redstoneMode.name)
		be.managedDevices.forEach {
			buf.writeInt(it?.address ?: 0)
		}

		return createPacket(buf)
	}

	override fun receive(server: MinecraftServer, player: ServerPlayerEntity, handler: ServerPlayNetworkHandler, buf: PacketByteBuf, responseSender: PacketSender) {
		val dimID = buf.readIdentifier()
		val pos = buf.readBlockPos()
		val mode = RedstoneMode.valueOf(buf.readString())
		val managedDevices = Array<IPAddress?>(5) { null }
		(0..4).map {
			val v = buf.readInt()
			managedDevices[it] = if (v == 0) null else IPAddress(v)
		}

		server.execute {
			// todo: check if the player is close enough
			val key = RegistryKey.of(Registry.DIMENSION, dimID)
			val world = server.getWorld(key) ?: return@execute
			val device = world.getBlockEntity(pos) as? RedstoneControllerBlockEntity ?: return@execute
			device.redstoneMode = mode
			device.managedDevices = managedDevices
			device.markDirty()
		}
	}
}