ItemJournal.java

package com.infinityraider.agricraft.items;

import com.infinityraider.agricraft.AgriCraft;
import com.infinityraider.agricraft.handler.GuiHandler;
import com.infinityraider.agricraft.items.tabs.AgriTabs;
import com.infinityraider.infinitylib.item.IItemWithModel;
import com.infinityraider.infinitylib.item.ItemBase;
import net.minecraft.entity.player.EntityPlayer;
import net.minecraft.item.ItemStack;
import net.minecraft.nbt.NBTTagCompound;
import net.minecraft.util.ActionResult;
import net.minecraft.util.EnumActionResult;
import net.minecraft.util.EnumHand;
import com.agricraft.agricore.core.AgriCore;
import net.minecraft.world.World;
import net.minecraftforge.fml.relauncher.Side;
import net.minecraftforge.fml.relauncher.SideOnly;

import java.util.ArrayList;
import java.util.Arrays;
import java.util.List;
import com.infinityraider.agricraft.api.plant.IAgriPlant;
import com.infinityraider.agricraft.apiimpl.PlantRegistry;
import com.infinityraider.agricraft.reference.AgriNBT;
import com.infinityraider.agricraft.api.items.IAgriJournalItem;
import com.infinityraider.agricraft.crafting.RecipeCopyJournal;
import com.infinityraider.agricraft.init.AgriItems;
import net.minecraft.init.Items;
import net.minecraftforge.oredict.ShapedOreRecipe;
import com.infinityraider.infinitylib.utility.IRecipeRegister;
import net.minecraftforge.fml.common.registry.GameRegistry;
import net.minecraftforge.oredict.RecipeSorter;

public class ItemJournal extends ItemBase implements IAgriJournalItem, IItemWithModel, IRecipeRegister {

	public ItemJournal() {
		super("journal");
		this.setMaxStackSize(1);
		this.setCreativeTab(AgriTabs.TAB_AGRICRAFT);
	}

	//this has to return true to make it so the getContainerItem method gets called when this item is used in a recipe
	@Override
	public boolean hasContainerItem(ItemStack stack) {
		return true;
	}

	//when this item is used in a crafting recipe it is replaced by the item return by this method
	@Override
	public ItemStack getContainerItem(ItemStack itemStack) {
		return itemStack.copy();
	}

	@Override
	public ActionResult<ItemStack> onItemRightClick(ItemStack stack, World world, EntityPlayer player, EnumHand hand) {
		if (world.isRemote) {
			player.openGui(AgriCraft.instance, GuiHandler.JOURNAL_GUI_ID, world, player.getPosition().getX(), player.getPosition().getY(), player.getPosition().getZ());
		}
		return new ActionResult<>(EnumActionResult.PASS, stack);
	}

	@Override
	@SideOnly(Side.CLIENT)
	public void addInformation(ItemStack stack, EntityPlayer player, List<String> list, boolean flag) {
		list.add(AgriCore.getTranslator().translate("agricraft_tooltip.discoveredSeeds") + ": " + getDiscoveredSeedIds(stack).size());
	}

	private List<String> getDiscoveredSeedIds(ItemStack journal) {
		if (journal == null) {
			return new ArrayList<>();
		}
		//check if the journal has AgriCraftNBT and if it doesn't, create a new one
		if (!journal.hasTagCompound()) {
			journal.setTagCompound(new NBTTagCompound());
			return new ArrayList<>();
		}

		NBTTagCompound tag = journal.getTagCompound();
		String discovered = tag.getString(AgriNBT.DISCOVERED_SEEDS);
		if (discovered.isEmpty()) {
			return new ArrayList<>();
		} else {
			return Arrays.asList(discovered.split(";"));
		}
	}

	@Override
	public void addEntry(ItemStack journal, IAgriPlant plant) {
		if (journal != null && journal.getItem() != null && plant != null) {
			List<String> seeds = getDiscoveredSeedIds(journal);
			if (!seeds.contains(plant.getId())) {
				NBTTagCompound tag = journal.getTagCompound();
				String old = tag.getString(AgriNBT.DISCOVERED_SEEDS);
				tag.setString(AgriNBT.DISCOVERED_SEEDS, old + plant.getId() + ";");
				journal.setTagCompound(tag);
			}
		}
	}

	@Override
	public boolean isSeedDiscovered(ItemStack journal, IAgriPlant plant) {
		return journal != null && plant != null && getDiscoveredSeedIds(journal).contains(plant.getId());
	}

	@Override
	public List<IAgriPlant> getDiscoveredSeeds(ItemStack journal) {
		List<IAgriPlant> list = new ArrayList<>();
		if (journal != null && journal.hasTagCompound()) {
			for (String id : getDiscoveredSeedIds(journal)) {
				IAgriPlant plant = PlantRegistry.getInstance().getPlant(id);
				if (plant != null) {
					list.add(plant);
				}
			}
		}
		return list;
	}

    @Override
    public void registerRecipes() {
        // Normal Crafting
        GameRegistry.addRecipe(new ShapedOreRecipe(this, "csc", "sbs", "csc", 'c', AgriItems.getInstance().CROPS, 's', Items.WHEAT_SEEDS, 'b', Items.BOOK));
        // Copy Crafting
        RecipeSorter.register("recipe.copy_journal", RecipeCopyJournal.class, RecipeSorter.Category.SHAPELESS, "");
        GameRegistry.addRecipe(new RecipeCopyJournal());
    }
    
}