InventoryManager.java

package me.corriekay.pokegoutil.data.managers;

import com.pokegoapi.api.PokemonGo;
import com.pokegoapi.api.inventory.Inventories;
import com.pokegoapi.exceptions.LoginFailedException;
import com.pokegoapi.exceptions.RemoteServerException;

/*
 * This controller takes care of interactions with the inventory items
 */
public final class InventoryManager {

    private static final InventoryManager S_INSTANCE = new InventoryManager();
    private static boolean sIsInit = false;

    private Inventories inventories;

    private InventoryManager() {

    }

    public static void initialize(PokemonGo go) {
        if (sIsInit)
            return;

        try {
            S_INSTANCE.inventories = go.getInventories();
        } catch (Exception e) {
            //TODO sumthin here
            return;
        }

        sIsInit = true;
    }

    public static Inventories getInventories() throws LoginFailedException, RemoteServerException {
        return sIsInit ? S_INSTANCE.inventories : null;
    }
}