/*
 * Copyright 2016 Red Hat, Inc. and/or its affiliates
 * and other contributors as indicated by the @author tags.
 *
 * 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 org.keycloak.adapters;

import org.apache.http.client.HttpClient;
import org.apache.http.client.methods.Configurable;
import org.apache.http.impl.conn.PoolingHttpClientConnectionManager;
import org.apache.http.impl.conn.tsccm.ThreadSafeClientConnManager;
import org.apache.http.params.CoreConnectionPNames;
import org.hamcrest.CoreMatchers;
import org.junit.Test;
import org.keycloak.adapters.authentication.ClientIdAndSecretCredentialsProvider;
import org.keycloak.adapters.authentication.JWTClientCredentialsProvider;
import org.keycloak.adapters.authentication.JWTClientSecretCredentialsProvider;
import org.keycloak.adapters.rotation.HardcodedPublicKeyLocator;
import org.keycloak.adapters.rotation.JWKPublicKeyLocator;
import org.keycloak.common.enums.RelativeUrlsUsed;
import org.keycloak.common.enums.SslRequired;
import org.keycloak.common.util.PemUtils;
import org.keycloak.enums.TokenStore;

import static org.hamcrest.MatcherAssert.assertThat;
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertFalse;
import static org.junit.Assert.assertTrue;

import java.lang.reflect.Field;
import java.util.Optional;

/**
 * @author <a href="mailto:sthorger@redhat.com">Stian Thorgersen</a>
 * @author <a href="mailto:brad.culley@spartasystems.com">Brad Culley</a>
 * @author <a href="mailto:john.ament@spartasystems.com">John D. Ament</a>
 */
public class KeycloakDeploymentBuilderTest {

    @Test
    public void load() {
        KeycloakDeployment deployment = KeycloakDeploymentBuilder.build(getClass().getResourceAsStream("/keycloak.json"));
        assertEquals("demo", deployment.getRealm());
        assertEquals("customer-portal", deployment.getResourceName());

        assertTrue(deployment.getPublicKeyLocator() instanceof HardcodedPublicKeyLocator);
        assertEquals(PemUtils.decodePublicKey("MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQCrVrCuTtArbgaZzL1hvh0xtL5mc7o0NqPVnYXkLvgcwiC3BjLGw1tGEGoJaXDuSaRllobm53JBhjx33UNv+5z/UMG4kytBWxheNVKnL6GgqlNabMaFfPLPCF8kAgKnsi79NMo+n6KnSY8YeUmec/p2vjO2NjsSAVcWEQMVhJ31LwIDAQAB"),
                deployment.getPublicKeyLocator().getPublicKey(null, deployment));

        assertEquals("https://localhost:8443/auth", deployment.getAuthServerBaseUrl());
        assertEquals(SslRequired.EXTERNAL, deployment.getSslRequired());
        assertTrue(deployment.isUseResourceRoleMappings());
        assertTrue(deployment.isCors());
        assertEquals(1000, deployment.getCorsMaxAge());
        assertEquals("POST, PUT, DELETE, GET", deployment.getCorsAllowedMethods());
        assertEquals("X-Custom, X-Custom2", deployment.getCorsAllowedHeaders());
        assertEquals("X-Custom3, X-Custom4", deployment.getCorsExposedHeaders());
        assertTrue(deployment.isBearerOnly());
        assertTrue(deployment.isPublicClient());
        assertTrue(deployment.isEnableBasicAuth());
        assertTrue(deployment.isExposeToken());
        assertFalse(deployment.isOAuthQueryParameterEnabled());
        assertEquals("234234-234234-234234", deployment.getResourceCredentials().get("secret"));
        assertEquals(ClientIdAndSecretCredentialsProvider.PROVIDER_ID, deployment.getClientAuthenticator().getId());
        HttpClient client = deployment.getClient();
        int maxPoolConnections = -1;
        Field connManager = null;

        try {
            connManager = client.getClass().getDeclaredField("connManager");
            connManager.setAccessible(true);
            maxPoolConnections = ((PoolingHttpClientConnectionManager) connManager.get(client)).getMaxTotal();
        } catch (Exception cause) {
            throw new RuntimeException("Failed to get max pool connections", cause);
        } finally {
            connManager.setAccessible(false);
        }


        assertEquals(20, maxPoolConnections);
        assertEquals(RelativeUrlsUsed.NEVER, deployment.getRelativeUrls());
        assertTrue(deployment.isAlwaysRefreshToken());
        assertTrue(deployment.isRegisterNodeAtStartup());
        assertEquals(1000, deployment.getRegisterNodePeriod());
        assertEquals(TokenStore.COOKIE, deployment.getTokenStore());
        assertEquals("email", deployment.getPrincipalAttribute());
        assertEquals(10, deployment.getTokenMinimumTimeToLive());
        assertEquals(20, deployment.getMinTimeBetweenJwksRequests());
        assertEquals(120, deployment.getPublicKeyCacheTtl());
        assertEquals("/api/$1", deployment.getRedirectRewriteRules().get("^/wsmaster/api/(.*)$"));
        assertTrue(deployment.isVerifyTokenAudience());
    }

    @Test
    public void loadNoClientCredentials() {
        KeycloakDeployment deployment = KeycloakDeploymentBuilder.build(getClass().getResourceAsStream("/keycloak-no-credentials.json"));
        assertEquals(ClientIdAndSecretCredentialsProvider.PROVIDER_ID, deployment.getClientAuthenticator().getId());

        assertTrue(deployment.getPublicKeyLocator() instanceof JWKPublicKeyLocator);
        assertEquals(10, deployment.getMinTimeBetweenJwksRequests());
        assertEquals(86400, deployment.getPublicKeyCacheTtl());
    }

    @Test
    public void loadJwtCredentials() {
        KeycloakDeployment deployment = KeycloakDeploymentBuilder.build(getClass().getResourceAsStream("/keycloak-jwt.json"));
        assertEquals(JWTClientCredentialsProvider.PROVIDER_ID, deployment.getClientAuthenticator().getId());
    }

    @Test
    public void loadSecretJwtCredentials() {
        KeycloakDeployment deployment = KeycloakDeploymentBuilder.build(getClass().getResourceAsStream("/keycloak-secret-jwt.json"));
        assertEquals(JWTClientSecretCredentialsProvider.PROVIDER_ID, deployment.getClientAuthenticator().getId());
    }

    @Test
    public void loadHttpClientTimeoutConfiguration() {
        KeycloakDeployment deployment = KeycloakDeploymentBuilder.build(getClass().getResourceAsStream("/keycloak-http-client.json"));
        assertThat(deployment, CoreMatchers.notNullValue());

        HttpClient client = deployment.getClient();
        assertThat(client, CoreMatchers.notNullValue());

        long socketTimeout = ((Configurable) client).getConfig().getSocketTimeout();
        long connectionTimeout = ((Configurable) client).getConfig().getConnectTimeout();

        assertThat(socketTimeout, CoreMatchers.is(2000L));
        assertThat(connectionTimeout, CoreMatchers.is(6000L));
    }
}
