/*******************************************************************************
 * Copyright (c) 2008, 2010 VMware Inc.
 * All rights reserved. This program and the accompanying materials
 * are made available under the terms of the Eclipse Public License v1.0
 * which accompanies this distribution, and is available at
 * http://www.eclipse.org/legal/epl-v10.html
 *
 * Contributors:
 *   VMware Inc. - initial contribution
 *******************************************************************************/

package org.springframework.showcase.formtags.service;


import org.springframework.showcase.formtags.domain.Country;

import org.springframework.showcase.formtags.domain.User;


import java.util.*;


/**

 * Stub {@link UserManager} implementation that maintains simple

 * in-memory state for users and countries.

 *


 */

public class StubUserManager implements UserManager {


    private Map users = new TreeMap();

    private Map countries = new TreeMap();


    /**

     * Creates a new instance of the {@link StubUserManager} class.

     */

    public StubUserManager() {

        loadCountries();

        loadUsers();

    }


    public void save(User user) {

        // passed in should be a clone - simply replace

        putUser(user);

    }


    public Collection findAllCountries() {

        return this.countries.values();

    }


    public Country findCountry(String code) {

        return (Country) this.countries.get(code);

    }


    public User findById(Integer id) {

        User user = (User) this.users.get(id);


        if (user != null) {

            return cloneUser(user);

        }


        return null;

    }


    public Collection findAll() {

        List userList = new ArrayList();

        Iterator itr = this.users.values().iterator();

        while (itr.hasNext()) {

            User user = (User) itr.next();

            userList.add(cloneUser(user));

        }

        return userList;

    }


    private void loadCountries() {

        putCountry(new Country("AT", "Austria"));

        putCountry(new Country("UK", "United Kingdom"));

        putCountry(new Country("US", "United States"));

    }


    private void loadUsers() {

        User u = new User();

        u.setId(new Integer(1));

        u.setFirstName("Harry");

        u.setLastName("Potter");

        u.setNotes("Promising Wizard...");

        u.setCountry(findCountry("UK"));

        u.setSex('M');

        u.setHouse("Gryffindor");

        u.getPreferences().setReceiveNewsletter(true);

        u.getPreferences().setInterests(new String[]{"Quidditch"});

        u.getPreferences().setFavouriteWord("Magic");

        u.setPassword("password");


        putUser(u);


        u = new User();

        u.setId(new Integer(2));

        u.setFirstName("Ronald");

        u.setLastName("Weasly");

        u.setNotes("Friends with Harry Potter.");

        u.setCountry(findCountry("UK"));

        u.setSex('M');

        u.setHouse("Gryffindor");

        u.setPassword("password");


        putUser(u);


        u = new User();

        u.setId(new Integer(3));

        u.setFirstName("Hermione");

        u.setLastName("Granger");

        u.setNotes("Friends with Harry Potter.");

        u.setCountry(findCountry("UK"));

        u.setSex('F');

        u.setHouse("Gryffindor");

        u.setPassword("password");


        putUser(u);

    }


    private void putUser(User user) {

        this.users.put(user.getId(), user);

    }


    private void putCountry(Country country) {

        this.countries.put(country.getCode(), country);

    }


    private User cloneUser(User user) {

        try {

            return (User) user.clone();

        }

        catch (CloneNotSupportedException e) {

            throw new IllegalStateException("Unable to clone user.");

        }

    }


}