/*
 * 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.tomee.microprofile.tck.jwt.config;

import org.eclipse.microprofile.jwt.config.Names;
import org.eclipse.microprofile.jwt.tck.TCKConstants;
import org.eclipse.microprofile.jwt.tck.config.PEMApplication;
import org.eclipse.microprofile.jwt.tck.config.PublicKeyAsPEMLocationURLTest;
import org.eclipse.microprofile.jwt.tck.config.PublicKeyEndpoint;
import org.eclipse.microprofile.jwt.tck.config.SimpleTokenUtils;
import org.eclipse.microprofile.jwt.tck.util.TokenUtils;
import org.jboss.arquillian.container.test.api.Deployment;
import org.jboss.arquillian.container.test.api.OperateOnDeployment;
import org.jboss.arquillian.container.test.api.RunAsClient;
import org.jboss.arquillian.test.api.ArquillianResource;
import org.jboss.arquillian.testng.Arquillian;
import org.jboss.shrinkwrap.api.ShrinkWrap;
import org.jboss.shrinkwrap.api.asset.StringAsset;
import org.jboss.shrinkwrap.api.spec.WebArchive;
import org.testng.Assert;
import org.testng.Reporter;
import org.testng.annotations.Test;

import javax.json.Json;
import javax.json.JsonObject;
import javax.json.JsonReader;
import javax.ws.rs.client.ClientBuilder;
import javax.ws.rs.client.WebTarget;
import javax.ws.rs.core.HttpHeaders;
import javax.ws.rs.core.Response;
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.StringReader;
import java.io.StringWriter;
import java.net.HttpURLConnection;
import java.net.URL;
import java.security.PrivateKey;
import java.util.HashMap;
import java.util.Properties;

import static javax.ws.rs.core.MediaType.APPLICATION_JSON;
import static org.eclipse.microprofile.jwt.tck.TCKConstants.TEST_GROUP_CONFIG;

public class PublicKeyAsPEMLocationTest extends Arquillian {

    /**
     * The base URL for the container under test
     */
    @ArquillianResource
    private URL baseURL;

    @Deployment(name = "keyEndpoint", order = 1)
    public static WebArchive createKeyEndpoint() throws Exception {
        URL publicKey = PublicKeyAsPEMLocationURLTest.class.getResource("/publicKey4k.pem");

        final WebArchive webArchive = ShrinkWrap
                .create(WebArchive.class, "KeyEndpoint.war")
                .addAsResource(publicKey, "/publicKey4k.pem")
                .addAsResource(publicKey, "/publicKey.pem")
                .addClass(PublicKeyEndpoint.class)
                .addClass(KeyApplication.class)
                .addClass(SimpleTokenUtils.class)
                .addAsWebInfResource("beans.xml", "beans.xml");
        return webArchive;
    }

    /**
     * Create a CDI aware base web application archive that includes an embedded JWK public key that
     * is referenced via the mp.jwt.verify.publickey.location as a URL resource property.
     * The root url is /pem
     *
     * @return the base base web application archive
     * @throws IOException - on resource failure
     */
    @Deployment(name = "testApp", order = 2)
    public static WebArchive createLocationURLDeployment() throws IOException {
        URL publicKey = PublicKeyAsPEMLocationURLTest.class.getResource("/publicKey4k.pem");
        // Setup the microprofile-config.properties content
        Properties configProps = new Properties();
        // Location points to an endpoint that returns a PEM key
        configProps.setProperty(Names.VERIFIER_PUBLIC_KEY_LOCATION, "http://localhost:8080/key/endp/publicKey4k");
        configProps.setProperty(Names.ISSUER, TCKConstants.TEST_ISSUER);
        StringWriter configSW = new StringWriter();
        configProps.store(configSW, "PublicKeyAsPEMLocationURLTest microprofile-config.properties");
        StringAsset configAsset = new StringAsset(configSW.toString());

        WebArchive webArchive = ShrinkWrap
                .create(WebArchive.class, "PublicKeyAsPEMLocationURLTest.war")
                .addAsResource(publicKey, "/publicKey4k.pem")
                .addAsResource(publicKey, "/publicKey.pem")
                .addClass(PublicKeyEndpoint.class)
                .addClass(PEMApplication.class)
                .addClass(SimpleTokenUtils.class)
                .addAsWebInfResource("beans.xml", "beans.xml")
                .addAsManifestResource(configAsset, "microprofile-config.properties")
                ;
        return webArchive;
    }

    @RunAsClient()
    @OperateOnDeployment("testApp")
    @Test(groups = TEST_GROUP_CONFIG,
            description = "Validate the http://localhost:8080/pem/endp/publicKey4k PEM endpoint")
    public void validateLocationUrlContents() throws Exception {
        URL locationURL = new URL(baseURL, "pem/endp/publicKey4k");
        Reporter.log("Begin validateLocationUrlContents");

        StringWriter content = new StringWriter();
        try(BufferedReader reader = new BufferedReader(new InputStreamReader(locationURL.openStream()))) {
            String line = reader.readLine();
            while(line != null) {
                content.write(line);
                content.write('\n');
                line = reader.readLine();
            }
        }
        Reporter.log("Received: "+content);
        String expected = TokenUtils.readResource("/publicKey4k.pem");
        Assert.assertEquals(content.toString(), expected);
    }

    @RunAsClient
    @OperateOnDeployment("testApp")
    @Test(groups = TEST_GROUP_CONFIG, dependsOnMethods = { "validateLocationUrlContents" },
            description = "Validate specifying the mp.jwt.verify.publickey.location as remote URL to a PEM key")
    public void testKeyAsLocationUrl() throws Exception {
        Reporter.log("testKeyAsLocationUrl, expect HTTP_OK");

        PrivateKey privateKey = TokenUtils.readPrivateKey("/privateKey4k.pem");
        String kid = "/privateKey4k.pem";
        HashMap<String, Long> timeClaims = new HashMap<>();
        String token = TokenUtils.generateTokenString(privateKey, kid, "/Token1.json", null, timeClaims);

        String uri = baseURL.toExternalForm() + "pem/endp/verifyKeyLocationAsPEMUrl";
        WebTarget echoEndpointTarget = ClientBuilder.newClient()
                                                    .target(uri)
                ;
        Response response = echoEndpointTarget.request(APPLICATION_JSON).header(HttpHeaders.AUTHORIZATION, "Bearer " + token).get();
        Assert.assertEquals(response.getStatus(), HttpURLConnection.HTTP_OK);
        String replyString = response.readEntity(String.class);
        JsonReader jsonReader = Json.createReader(new StringReader(replyString));
        JsonObject reply = jsonReader.readObject();
        Reporter.log(reply.toString());
        Assert.assertTrue(reply.getBoolean("pass"), reply.getString("msg"));
    }
}
