BloodMagic/src/main/java/WayofTime/bloodmagic/api/util/helper/RitualHelper.java

package WayofTime.bloodmagic.api.util.helper;

import WayofTime.bloodmagic.api.registry.RitualRegistry;
import WayofTime.bloodmagic.api.ritual.Ritual;
import net.minecraftforge.common.config.Configuration;
import sun.misc.Launcher;

import java.io.File;
import java.net.URL;

public class RitualHelper {

    public static boolean canCrystalActivate(Ritual ritual, int crystalLevel) {
        return ritual.getCrystalLevel() <= crystalLevel && RitualRegistry.ritualEnabled(ritual);
    }

    public static String getNextRitualKey(String currentKey) {
        int currentIndex = RitualRegistry.getIds().indexOf(currentKey);
        int nextIndex = RitualRegistry.getRituals().listIterator(currentIndex).nextIndex();

        return RitualRegistry.getIds().get(nextIndex);
    }

    public static String getPrevRitualKey(String currentKey) {
        int currentIndex = RitualRegistry.getIds().indexOf(currentKey);
        int previousIndex = RitualRegistry.getIds().listIterator(currentIndex).previousIndex();

        return RitualRegistry.getIds().get(previousIndex);
    }

    /**
     * Adds your Ritual to the {@link RitualRegistry#enabledRituals} Map.
     * This is used to determine whether your effect is enabled or not.
     *
     * The config option will be created as {@code B:ClassName=true} with a comment of
     * {@code Enables the ClassName ritual}.
     *
     * Should be safe to modify at any point.
     *
     * @param config      - Your mod's Forge {@link Configuration} object.
     * @param packageName - The package your Rituals are located in.
     * @param category    - The config category to write to.
     */
    public static void checkRituals(Configuration config, String packageName, String category) {
        String name = packageName;
        if (!name.startsWith("/"))
            name = "/" + name;

        name = name.replace('.', '/');
        URL url = Launcher.class.getResource(name);
        File directory = new File(url.getFile());

        if (directory.exists()) {
            String[] files = directory.list();

            for (String file : files) {
                if (file.endsWith(".class")) {
                    String className = file.substring(0, file.length() - 6);

                    try {
                        Object o = Class.forName(packageName + "." + className).newInstance();

                        if (o instanceof Ritual)
                            RitualRegistry.enabledRituals.put((Ritual) o, config.get(category, className, true).getBoolean());

                    } catch (ClassNotFoundException e) {
                        e.printStackTrace();
                    } catch (InstantiationException e) {
                        e.printStackTrace();
                    } catch (IllegalAccessException e) {
                        e.printStackTrace();
                    }
                }
            }
        }
    }
}