package gregtech.common.render.items;

import net.minecraft.client.Minecraft;
import net.minecraft.client.renderer.RenderHelper;
import net.minecraft.client.renderer.entity.RenderItem;
import net.minecraft.item.ItemStack;
import net.minecraftforge.client.IItemRenderer;

import org.lwjgl.input.Keyboard;
import org.lwjgl.opengl.GL11;

import gregtech.api.enums.ItemList;
import gregtech.api.util.AssemblyLineUtils;

// borrow form ae2
public class DataStickRenderer implements IItemRenderer {

    private final RenderItem ri = new RenderItem();

    public DataStickRenderer() {
        MetaGeneratedItemRenderer.registerSpecialRenderer(ItemList.Tool_DataStick, this);
    }

    @Override
    public boolean handleRenderType(ItemStack item, ItemRenderType type) {
        final boolean isShiftHeld = Keyboard.isKeyDown(Keyboard.KEY_LSHIFT) || Keyboard.isKeyDown(Keyboard.KEY_RSHIFT);
        final boolean shouldSwitch = item.hasTagCompound() && item.getTagCompound()
            .hasKey("output");

        return type == ItemRenderType.INVENTORY && isShiftHeld && shouldSwitch;
    }

    @Override
    public boolean shouldUseRenderHelper(ItemRenderType type, ItemStack item, ItemRendererHelper helper) {
        return false;
    }

    @Override
    public void renderItem(ItemRenderType type, ItemStack item, Object... data) {
        final ItemStack is = AssemblyLineUtils.getDataStickOutput(item);
        final Minecraft mc = Minecraft.getMinecraft();

        GL11.glPushAttrib(GL11.GL_ENABLE_BIT | GL11.GL_COLOR_BUFFER_BIT);
        RenderHelper.enableGUIStandardItemLighting();
        this.ri.renderItemAndEffectIntoGUI(mc.fontRenderer, mc.getTextureManager(), is, 0, 0);
        RenderHelper.disableStandardItemLighting();
        GL11.glPopAttrib();
    }
}