package org.anjocaido.groupmanager.dataholder;

import java.io.File;
import java.util.Collections;
import java.util.HashMap;
import java.util.Map;

import org.anjocaido.groupmanager.data.User;

/**
 * This container holds all Users loaded from the relevant usersFile.
 *
 * @author ElgarL
 *
 */
public class UsersDataHolder {
    private WorldDataHolder dataSource;
    private File usersFile;
    private boolean haveUsersChanged = false;
    private long timeStampUsers = 0;
    /**
     * The actual groups holder
     */
    private final Map<String, User> users = Collections.synchronizedMap(new HashMap<String, User>());

    /**
     * Constructor
     */
    protected UsersDataHolder() {
    }

    public WorldDataHolder getDataSource() {
        return this.dataSource;
    }

    /**
     * @return the timeStampUsers
     */
    public long getTimeStampUsers() {
        return timeStampUsers;
    }

    /**
     * Note: Iteration over this object has to be synchronized!
     *
     * @return the users
     */
    public Map<String, User> getUsers() {
        return users;
    }

    /**
     * @return the usersFile
     */
    public File getUsersFile() {
        return usersFile;
    }

    /**
     * @return the haveUsersChanged
     */
    public boolean HaveUsersChanged() {
        return haveUsersChanged;
    }

    /**
     * Resets the Users
     */
    public void resetUsers() {
        this.users.clear();
    }

    public void setDataSource(final WorldDataHolder dataSource) {
        this.dataSource = dataSource;
        // push this data source to the users, so they pull the correct groups data.
        synchronized (users) {
            for (final User user : users.values())
                user.setDataSource(this.dataSource);
        }
    }

    /**
     * @param timeStampUsers
     *            the timeStampUsers to set
     */
    public void setTimeStampUsers(final long timeStampUsers) {
        this.timeStampUsers = timeStampUsers;
    }

    /**
     * @param haveUsersChanged
     *            the haveUsersChanged to set
     */
    public void setUsersChanged(final boolean haveUsersChanged) {
        this.haveUsersChanged = haveUsersChanged;
    }

    /**
     * @param usersFile
     *            the usersFile to set
     */
    public void setUsersFile(final File usersFile) {
        this.usersFile = usersFile;
    }
}