/**
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You 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 org.apache.camel.itest.osgi.shiro;

import javax.naming.AuthenticationException;

import org.apache.camel.EndpointInject;
import org.apache.camel.Exchange;
import org.apache.camel.builder.RouteBuilder;
import org.apache.camel.component.mock.MockEndpoint;
import org.apache.camel.component.shiro.security.ShiroSecurityPolicy;
import org.apache.camel.component.shiro.security.ShiroSecurityToken;
import org.apache.camel.component.shiro.security.ShiroSecurityTokenInjector;
import org.apache.camel.itest.osgi.OSGiIntegrationTestSupport;
import org.apache.karaf.testing.Helper;
import org.apache.shiro.authc.IncorrectCredentialsException;
import org.apache.shiro.authc.LockedAccountException;
import org.apache.shiro.authc.UnknownAccountException;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.ops4j.pax.exam.Option;
import org.ops4j.pax.exam.junit.Configuration;
import org.ops4j.pax.exam.junit.JUnit4TestRunner;

import static org.ops4j.pax.exam.CoreOptions.equinox;
import static org.ops4j.pax.exam.CoreOptions.felix;
import static org.ops4j.pax.exam.OptionUtils.combine;
import static org.ops4j.pax.exam.container.def.PaxRunnerOptions.scanFeatures;
import static org.ops4j.pax.exam.container.def.PaxRunnerOptions.workingDirectory;

@RunWith(JUnit4TestRunner.class)
public class ShiroAuthenticationTest extends OSGiIntegrationTestSupport {
    
    @EndpointInject(uri = "mock:success")
    protected MockEndpoint successEndpoint;

    @EndpointInject(uri = "mock:authenticationException")
    protected MockEndpoint failureEndpoint;

    private byte[] passPhrase = {
        (byte) 0x08, (byte) 0x09, (byte) 0x0A, (byte) 0x0B,
        (byte) 0x0C, (byte) 0x0D, (byte) 0x0E, (byte) 0x0F,
        (byte) 0x10, (byte) 0x11, (byte) 0x12, (byte) 0x13,
        (byte) 0x14, (byte) 0x15, (byte) 0x16, (byte) 0x17};    
    
    @Test
    public void testShiroAuthenticationFailure() throws Exception {        
        //Incorrect password
        ShiroSecurityToken shiroSecurityToken = new ShiroSecurityToken("ringo", "stirr");
        TestShiroSecurityTokenInjector shiroSecurityTokenInjector = new TestShiroSecurityTokenInjector(shiroSecurityToken, passPhrase);
        
        successEndpoint.expectedMessageCount(0);
        failureEndpoint.expectedMessageCount(1);
        
        template.send("direct:secureEndpoint", shiroSecurityTokenInjector);
        
        successEndpoint.assertIsSatisfied();
        failureEndpoint.assertIsSatisfied();
    }
    
    @Test
    public void testSuccessfulShiroAuthenticationWithNoAuthorization() throws Exception {        
        //Incorrect password
        ShiroSecurityToken shiroSecurityToken = new ShiroSecurityToken("ringo", "starr");
        TestShiroSecurityTokenInjector shiroSecurityTokenInjector = new TestShiroSecurityTokenInjector(shiroSecurityToken, passPhrase);
        
        successEndpoint.expectedMessageCount(1);
        failureEndpoint.expectedMessageCount(0);
        
        template.send("direct:secureEndpoint", shiroSecurityTokenInjector);
        
        successEndpoint.assertIsSatisfied();
        failureEndpoint.assertIsSatisfied();
    }
    
    @Configuration
    public static Option[] configure() throws Exception {
        Option[] options = combine(
            // Default karaf environment
            Helper.getDefaultOptions(
            // this is how you set the default log level when using pax logging (logProfile)
                Helper.setLogLevel("WARN")),           
            // using the features to install the camel components             
            scanFeatures(getCamelKarafFeatureUrl(),                         
                          "camel-core", "camel-spring", "camel-test", "camel-shiro"),
                         
            workingDirectory("target/paxrunner/"),

            felix(), equinox());
        
        return options;
    }


    protected RouteBuilder createRouteBuilder() throws Exception {
        return new RouteBuilder() {
            public void configure() {
                
                final ShiroSecurityPolicy securityPolicy = new ShiroSecurityPolicy("classpath:/org/apache/camel/itest/osgi/shiro/securityconfig.ini", passPhrase);
                
                onException(UnknownAccountException.class).
                    to("mock:authenticationException");
                onException(IncorrectCredentialsException.class).
                    to("mock:authenticationException");
                onException(LockedAccountException.class).
                    to("mock:authenticationException");
                onException(AuthenticationException.class).
                    to("mock:authenticationException");
                
                from("direct:secureEndpoint").
                    to("log:incoming payload").
                    policy(securityPolicy).
                    to("mock:success");
            }
        };
    }

    
    private class TestShiroSecurityTokenInjector extends ShiroSecurityTokenInjector {

        public TestShiroSecurityTokenInjector(
                ShiroSecurityToken shiroSecurityToken, byte[] bytes) {
            super(shiroSecurityToken, bytes);
        }
        
        public void process(Exchange exchange) throws Exception {
            exchange.getIn().setHeader("SHIRO_SECURITY_TOKEN", encrypt());
            exchange.getIn().setBody("Beatle Mania");
        }
    }
    
}
