/*
 * Copyright 2018 The Vert.x Community.
 *
 * 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 io.vertx.cassandra;

import com.datastax.driver.core.Cluster;
import io.vertx.codegen.annotations.DataObject;
import io.vertx.core.json.JsonObject;

import java.net.InetSocketAddress;
import java.util.List;
import java.util.stream.Collectors;

Eclipse Vert.x Cassandra client options.
Author:
Pavel Drankou, Thomas Segismont/**
 * Eclipse Vert.x Cassandra client options.
 *
 * @author Pavel Drankou
 * @author Thomas Segismont
 */
@DataObject(generateConverter = true)
public class CassandraClientOptions {

  
Default port for connecting with Cassandra service.
/**
   * Default port for connecting with Cassandra service.
   */
  public static final int DEFAULT_PORT = 9042;

  
Default host for connecting with Cassandra service.
/**
   * Default host for connecting with Cassandra service.
   */
  public static final String DEFAULT_HOST = "localhost";

  private Cluster.Builder builder;
  private String keyspace;

  
Default constructor.
/**
   * Default constructor.
   */
  public CassandraClientOptions() {
    this(Cluster.builder());
    setPort(DEFAULT_PORT);
  }

  
Copy constructor.
/**
   * Copy constructor.
   */
  public CassandraClientOptions(CassandraClientOptions other) {
    this(Cluster.builder());
    setPort(DEFAULT_PORT);
    setContactPoints(other.getContactPoints());
    keyspace = other.keyspace;
  }

  
Constructor using an existing Builder instance. /**
   * Constructor using an existing {@link Cluster.Builder} instance.
   */
  public CassandraClientOptions(Cluster.Builder builder) {
    this.builder = builder;
  }

  
Constructor to create options from JSON.
Params:
json – the JSON/**
   * Constructor to create options from JSON.
   *
   * @param json the JSON
   */
  public CassandraClientOptions(JsonObject json) {
    this();
    CassandraClientOptionsConverter.fromJson(json, this);
  }

  
Returns:
a JSON representation of these options/**
   * @return a JSON representation of these options
   */
  public JsonObject toJson() {
    JsonObject json = new JsonObject();
    CassandraClientOptionsConverter.toJson(this, json);
    return json;
  }

  
Set a list of hosts, where some of cluster nodes is located.
Params:
contactPoints – the list of hosts
Returns:
a reference to this, so the API can be used fluently/**
   * Set a list of hosts, where some of cluster nodes is located.
   *
   * @param contactPoints the list of hosts
   * @return a reference to this, so the API can be used fluently
   */
  public CassandraClientOptions setContactPoints(List<String> contactPoints) {
    for (String contactPoint : contactPoints) {
      builder.addContactPoint(contactPoint);
    }
    return this;
  }

  
Set which port should be used for all the hosts to connect to a cassandra service.
Params:
port – the port
Returns:
a reference to this, so the API can be used fluently/**
   * Set which port should be used for all the hosts to connect to a cassandra service.
   *
   * @param port the port
   * @return a reference to this, so the API can be used fluently
   */
  public CassandraClientOptions setPort(int port) {
    builder.withPort(port);
    return this;
  }

  
Add a address, where a cluster node is located.
Params:
address – the address
Returns:
 a reference to this, so the API can be used fluently/**
   * Add a address, where a cluster node is located.
   * @param address the address
   * @return  a reference to this, so the API can be used fluently
   */
  public CassandraClientOptions addContactPoint(String address) {
    builder.addContactPoint(address);
    return this;
  }

  
Returns:
list of address used by the client for connecting with a cassandra service/**
   * @return list of address used by the client for connecting with a cassandra service
   */
  public List<String> getContactPoints() {
    return builder.getContactPoints().stream().map(InetSocketAddress::toString).collect(Collectors.toList());
  }

  
Returns:
a cluster builder, which will be used by the client/**
   * @return a cluster builder, which will be used by the client
   */
  public Cluster.Builder dataStaxClusterBuilder() {
    return builder;
  }

  
Returns:
the keyspace to use when creating the Cassandra session/**
   * @return the keyspace to use when creating the Cassandra session
   */
  public String getKeyspace() {
    return keyspace;
  }

  
Set the keyspace to use when creating the Cassandra session. Defaults to null. 
Params:
keyspace – the keyspace to use when creating the Cassandra session
Returns:
a reference to this, so the API can be used fluently/**
   * Set the keyspace to use when creating the Cassandra session. Defaults to {@code null}.
   *
   * @param keyspace the keyspace to use when creating the Cassandra session
   *
   * @return a reference to this, so the API can be used fluently
   */
  public CassandraClientOptions setKeyspace(String keyspace) {
    this.keyspace = keyspace;
    return this;
  }
}