/*
    * 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.syncope.common.keymaster.client.zookeeper;
  
  import static org.junit.jupiter.api.Assertions.fail;
  
  import java.io.InputStream;
  import java.util.HashMap;
  import java.util.Map;
  import java.util.Properties;
  import java.util.concurrent.atomic.AtomicReference;
  import javax.security.auth.login.AppConfigurationEntry;
  import javax.security.auth.login.Configuration;
  import org.apache.curator.test.InstanceSpec;
  import org.apache.curator.test.TestingServer;
  
  public final class ZookeeperTestingServer {
  
      private static TestingServer ZK_SERVER;
  
      public static void start() throws Exception {
          if (ZK_SERVER == null) {
              AtomicReference<String> username = new AtomicReference<>();
              AtomicReference<String> password = new AtomicReference<>();
              try (InputStream propStream = ZookeeperServiceOpsTest.class.getResourceAsStream("/test.properties")) {
                  Properties props = new Properties();
                  props.load(propStream);
  
                  username.set(props.getProperty("keymaster.username"));
                  password.set(props.getProperty("keymaster.password"));
              } catch (Exception e) {
                  fail("Could not load /test.properties", e);
              }
  
              Configuration.setConfiguration(new Configuration() {
  
                  private final AppConfigurationEntry[] entries = {
                      new AppConfigurationEntry(
                      "org.apache.zookeeper.server.auth.DigestLoginModule",
                      AppConfigurationEntry.LoginModuleControlFlag.REQUIRED,
                      Map.of(
                      "user_" + username.get(), password.get()
                      ))
                  };
  
                  @Override
                  public AppConfigurationEntry[] getAppConfigurationEntry(final String name) {
                      return entries;
                  }
              });
  
              Map<String, Object> customProperties = new HashMap<>();
              customProperties.put("authProvider.1", "org.apache.zookeeper.server.auth.SASLAuthenticationProvider");
              InstanceSpec spec = new InstanceSpec(null, 2181, -1, -1, true, 1, -1, -1, customProperties);
              ZK_SERVER = new TestingServer(spec, true);
          }
      }
  
      private ZookeeperTestingServer() {
          // private constructor for static utility class
      }
  }