Spackenmobs/src/main/java/mod/acgaming/spackenmobs/misc/ModLootTableList.java

package mod.acgaming.spackenmobs.misc;

import com.google.common.collect.Sets;
import net.minecraft.util.ResourceLocation;
import net.minecraft.world.storage.loot.LootTable;
import net.minecraft.world.storage.loot.LootTableManager;

import java.io.File;
import java.util.Collections;
import java.util.Set;

public class ModLootTableList {
    private static final Set<ResourceLocation> LOOT_TABLES = Sets.<ResourceLocation>newHashSet();
    public static final ResourceLocation EMPTY = register("empty");
    public static final ResourceLocation ENTITIES_JENS = register("entities/jens");
    private static final Set<ResourceLocation> READ_ONLY_LOOT_TABLES = Collections.<ResourceLocation>unmodifiableSet(LOOT_TABLES);

    public static Set<ResourceLocation> getAll() {
        return READ_ONLY_LOOT_TABLES;
    }

    public static ResourceLocation register(ResourceLocation id) {
        if(LOOT_TABLES.add(id)) {
            return id;
        }else {
            throw new IllegalArgumentException(id + " is already a registered built-in loot table");
        }
    }

    private static ResourceLocation register(String id) {
        return register(new ResourceLocation("spackenmobs", id));
    }

    public static boolean test() {
        LootTableManager loottablemanager = new LootTableManager((File)null);

        for(ResourceLocation resourcelocation : READ_ONLY_LOOT_TABLES) {
            if(loottablemanager.getLootTableFromLocation(resourcelocation) == LootTable.EMPTY_LOOT_TABLE) {
                return false;
            }
        }

        return true;
    }
}