/* Copyright 2004, 2005, 2006 Acegi Technology Pty Limited
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package sample.contact;


import java.lang.reflect.InvocationTargetException;
import java.lang.reflect.Method;
import java.util.List;
import java.util.Map;

import org.springframework.beans.factory.ListableBeanFactory;
import org.springframework.context.support.FileSystemXmlApplicationContext;
import org.springframework.security.authentication.UsernamePasswordAuthenticationToken;
import org.springframework.security.core.Authentication;
import org.springframework.security.core.context.SecurityContextHolder;
import org.springframework.util.StopWatch;


/**
 * Demonstrates accessing the {@link ContactManager} via remoting protocols.
 * <p>
 * Based on Spring's JPetStore sample, written by Juergen Hoeller.
 *
 * @author Ben Alex
 */
public class ClientApplication {
    //~ Instance fields ================================================================================================

    private final ListableBeanFactory beanFactory;

    //~ Constructors ===================================================================================================

    public ClientApplication(ListableBeanFactory beanFactory) {
        this.beanFactory = beanFactory;
    }

    //~ Methods ========================================================================================================

    public void invokeContactManager(Authentication authentication, int nrOfCalls) {
        StopWatch stopWatch = new StopWatch(nrOfCalls + " ContactManager call(s)");
        Map<String, ContactManager> contactServices = this.beanFactory.getBeansOfType(ContactManager.class, true, true);

        SecurityContextHolder.getContext().setAuthentication(authentication);

        for (String beanName : contactServices.keySet()) {
            Object object = this.beanFactory.getBean("&" + beanName);

            try {
                System.out.println("Trying to find setUsername(String) method on: " + object.getClass().getName());

                Method method = object.getClass().getMethod("setUsername", new Class[] {String.class});
                System.out.println("Found; Trying to setUsername(String) to " + authentication.getPrincipal());
                method.invoke(object, authentication.getPrincipal());
            } catch (NoSuchMethodException ignored) {
                System.out.println("This client proxy factory does not have a setUsername(String) method");
            } catch (IllegalAccessException ignored) {
                ignored.printStackTrace();
            } catch (InvocationTargetException ignored) {
                ignored.printStackTrace();
            }

            try {
                System.out.println("Trying to find setPassword(String) method on: " + object.getClass().getName());

                Method method = object.getClass().getMethod("setPassword", new Class[] {String.class});
                method.invoke(object, authentication.getCredentials());
                System.out.println("Found; Trying to setPassword(String) to " + authentication.getCredentials());
            } catch (NoSuchMethodException ignored) {
                System.out.println("This client proxy factory does not have a setPassword(String) method");
            } catch (IllegalAccessException ignored) {}
            catch (InvocationTargetException ignored) {}

            ContactManager remoteContactManager = contactServices.get(beanName);
            System.out.println("Calling ContactManager '" + beanName + "'");

            stopWatch.start(beanName);

            List<Contact> contacts = null;

            for (int i = 0; i < nrOfCalls; i++) {
                contacts = remoteContactManager.getAll();
            }

            stopWatch.stop();

            if (contacts.size() != 0) {
                for(Contact contact : contacts) {
                    System.out.println("Contact: " + contact);
                }
            } else {
                System.out.println("No contacts found which this user has permission to");
            }

            System.out.println();
            System.out.println(stopWatch.prettyPrint());
        }

        SecurityContextHolder.clearContext();
    }

    public static void main(String[] args) {
        String username = System.getProperty("username", "");
        String password = System.getProperty("password", "");
        String nrOfCallsString = System.getProperty("nrOfCalls", "");

        if ("".equals(username) || "".equals(password)) {
            System.out.println(
                "You need to specify the user ID to use, the password to use, and optionally a number of calls "
                + "using the username, password, and nrOfCalls system properties respectively. eg for user rod, "
                + "use: -Dusername=rod -Dpassword=koala' for a single call per service and "
                + "use: -Dusername=rod -Dpassword=koala -DnrOfCalls=10 for ten calls per service.");
            System.exit(-1);
        } else {
            int nrOfCalls = 1;

            if (!"".equals(nrOfCallsString)) {
                nrOfCalls = Integer.parseInt(nrOfCallsString);
            }

            ListableBeanFactory beanFactory = new FileSystemXmlApplicationContext("clientContext.xml");
            ClientApplication client = new ClientApplication(beanFactory);

            client.invokeContactManager(new UsernamePasswordAuthenticationToken(username, password), nrOfCalls);
            System.exit(0);
        }
    }
}
