package gregtech.api.interfaces;

import codechicken.nei.NEIClientUtils;
import codechicken.nei.VisiblityData;
import codechicken.nei.api.INEIGuiHandler;
import codechicken.nei.api.TaggedInventoryArea;
import cpw.mods.fml.common.Optional;
import java.util.Collections;
import java.util.List;
import net.minecraft.client.gui.inventory.GuiContainer;
import net.minecraft.item.ItemStack;

/**
 * Implement this interface if your GuiContainer supports Drag-And-Drop behavior on NEI.
 */
@Optional.Interface(modid = "NotEnoughItems", iface = "codechicken.nei.api.INEIGuiHandler")
public interface IDragAndDropSupport extends INEIGuiHandler {

    /**
     * Implement this to handle Drag-And-Drop behavior.
     * This may be invoked on normal click too ({@code isGhost==false}), so be careful
     * if your slot supports both Drag-And-Drop and other behaviors e.g. fluid I/O with FluidDisplay click
     * @param gui Current gui instance. Make sure to check if it is an instance of your GuiContainer.
     * @param mousex X position of the mouse
     * @param mousey Y position of the mouse
     * @param draggedStack ItemStack user is holding on cursor
     * @param button 0 = left click, 1 = right click
     * @param isGhost Whether {@code draggedStack} is dragged from ItemPanel/BookmarkPanel, or actual item player holds
     * @return True if success
     */
    boolean handleDragAndDropGT(
            GuiContainer gui, int mousex, int mousey, ItemStack draggedStack, int button, boolean isGhost);

    default boolean handleDragNDrop(GuiContainer gui, int mousex, int mousey, ItemStack draggedStack, int button) {
        return handleDragAndDropGT(gui, mousex, mousey, draggedStack, button, NEIClientUtils.getHeldItem() == null);
    }

    default VisiblityData modifyVisiblity(GuiContainer gui, VisiblityData currentVisibility) {
        return currentVisibility;
    }

    default Iterable<Integer> getItemSpawnSlots(GuiContainer gui, ItemStack item) {
        return Collections.emptyList();
    }

    default List<TaggedInventoryArea> getInventoryAreas(GuiContainer gui) {
        return null;
    }

    default boolean hideItemPanelSlot(GuiContainer gui, int x, int y, int w, int h) {
        return false;
    }
}