package sourcecoded.quantum.api.discovery;

import java.util.ArrayList;
import java.util.LinkedHashMap;
import java.util.List;

/**
 * The registry for everything to do with
 * the discovery mechanics of Quantum
 * Anomalies. Categories and their
 * respective Items are registered
 * in here.
 *
 * @author SourceCoded
 */
public class DiscoveryRegistry {

    /**
     * A linked HashMap of all the categories
     *
     */
    public static LinkedHashMap<String, DiscoveryCategory> categories = new LinkedHashMap<String, DiscoveryCategory>();

    /**
     * Register your category in the registry.
     * Recommended you do this during Init.
     * @see cpw.mods.fml.common.event.FMLInitializationEvent
     */
    public static void registerCategory(DiscoveryCategory category) {
        categories.put(category.getKey(), category);
    }

    /**
     * Get a category in the registry.
     */
    public static DiscoveryCategory getCategory(String key) {
        return categories.get(key);
    }

    /**
     * Get the research item by its
     * identification key. Searches all
     * categories.
     *
     * @return The Item, null if nothing is found
     */
    public static DiscoveryItem getItemFromKey(String key) {
        for (DiscoveryCategory cat : categories.values()) {
            if (cat.hasDiscoveryItem(key))
                return cat.getDiscoveryItem(key);
        }

        return null;
    }

    /**
     * Get the category for the item
     * given.
     *
     * @return The category, null if nothing was found
     */
    public static DiscoveryCategory getCategoryForItem(String key) {
        for (DiscoveryCategory cat : categories.values()) {
            if (cat.hasDiscoveryItem(key))
                return cat;
        }

        return null;
    }

    public static List<String> getItemKeyList() {
        List<String> list = new ArrayList<String>();
        for (DiscoveryCategory cat : categories.values()) {
            for (DiscoveryItem item : cat.discoveries.values())
                list.add(item.getKey());
        }

        return list;
    }

    public static List<String> getCategoryKeyList() {
        List<String> list = new ArrayList<String>();
        for (DiscoveryCategory cat : categories.values())
            list.add(cat.getKey());

        return list;
    }
}