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.block.terminal.CraftingTerminalBlockEntity
import net.shadowfacts.phycon.block.terminal.CraftingTerminalScreenHandler

/**
 * @author shadowfacts
 */
object C2STerminalCraftingButton: ServerReceiver {
	override val CHANNEL = Identifier(PhysicalConnectivity.MODID, "terminal_crafting_button")

	enum class Action {
		CLEAR_GRID,
		REQUEST_ONE_MORE,
		REQUEST_MAX_MORE,
	}

	operator fun invoke(terminal: CraftingTerminalBlockEntity, action: Action): Packet<*> {
		val buf = PacketByteBufs.create()

		buf.writeIdentifier(terminal.world!!.registryKey.value)
		buf.writeBlockPos(terminal.pos)
		buf.writeByte(action.ordinal)

		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 action = Action.values()[buf.readByte().toInt()]

		server.execute {
			val key = RegistryKey.of(Registry.WORLD_KEY, dimID)
			val screenHandler = player.currentScreenHandler as? CraftingTerminalScreenHandler ?: return@execute
			if (screenHandler.terminal.pos != pos || screenHandler.terminal.world!!.registryKey != key) return@execute

			when (action) {
				Action.CLEAR_GRID -> screenHandler.clearCraftingGrid()
				Action.REQUEST_ONE_MORE -> screenHandler.requestMoreCraftingIngredients(1)
				Action.REQUEST_MAX_MORE -> screenHandler.requestMoreCraftingIngredients(64)
			}
		}
	}
}