Mekanism-tilera-Edition/src/main/java/com/jadarstudios/developercapes/user/GroupManager.java

/**
 * DeveloperCapes by Jadar
 * License: MIT License
 * (https://raw.github.com/jadar/DeveloperCapes/master/LICENSE)
 * version 4.0.0.x
 */
package com.jadarstudios.developercapes.user;

import java.util.ArrayList;
import java.util.Collection;
import java.util.HashMap;
import java.util.Map;

import com.jadarstudios.developercapes.DevCapes;
import com.jadarstudios.developercapes.cape.CapeManager;

/**
 * All groups have to be managed
 *
 * @author jadar
 */
public class GroupManager {
    protected static GroupManager instance;

    private HashMap<String, Group> groups;

    public GroupManager() {
        this.groups = new HashMap<String, Group>();
    }

    public static GroupManager getInstance() {
        if (instance == null) {
            instance = new GroupManager();
        }
        return instance;
    }

    public void addGroup(Group group) {
        groups.put(group.name, group);

        try {
            UserManager.getInstance().addUsers(group.users.values());
            CapeManager.getInstance().addCape(group.cape);
        } catch (Exception e) {
            e.printStackTrace();
        }
    }

    public void addGroups(Collection<Group> groups) {
        for (Group g : groups) {
            GroupManager.getInstance().addGroup(g);
        }
    }

    public Group getGroup(String capeName) {
        return groups.get(capeName);
    }

    public Group newGroup(String name) {
        if (this.getGroup(name) != null) {
            return this.getGroup(name);
        }
        Group group = new Group(name);
        return group;
    }

    public Group parse(String name, Map<String, Object> data) {
        Group group = new Group(name);

        Object usersObj = data.get("users");
        Object capeUrlObj = data.get("capeUrl");

        if (!(usersObj instanceof ArrayList) || !(capeUrlObj instanceof String)) {
            DevCapes.logger.error(String.format(
                "Group %s could not be parsed because it either is invalid or missing elements.",
                name
            ));
            return null;
        }

        ArrayList users = (ArrayList) usersObj;
        String capeUrl = (String) capeUrlObj;

        group.cape = CapeManager.getInstance().parse(name, capeUrl);

        for (Object obj : users) {
            User user = UserManager.getInstance().parse((String) obj, group.cape);
            if (user != null) {
                group.addUser(user);
            }
        }
        return group;
    }
}