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/*
 * Copyright Amazon.com, Inc. or its affiliates. All Rights Reserved.
 *
 * Licensed under the Apache License, Version 2.0 (the "License").
 * You may not use this file except in compliance with the License.
 * A copy of the License is located at
 *
 *  http://aws.amazon.com/apache2.0
 *
 * or in the "license" file accompanying this file. This file 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 software.amazon.glue.requests;

import java.util.Map;
import java.util.Objects;
import org.apache.iceberg.catalog.Namespace;
import org.apache.iceberg.relocated.com.google.common.base.MoreObjects;
import org.apache.iceberg.relocated.com.google.common.base.Preconditions;
import org.apache.iceberg.relocated.com.google.common.collect.ImmutableMap;
import org.apache.iceberg.relocated.com.google.common.collect.Maps;
import software.amazon.glue.GlueRequest;

public class CreateNamespaceRequest implements GlueRequest {

  private Namespace namespace;
  private Map properties;

  public CreateNamespaceRequest() {
    // Needed for Jackson Deserialization.
  }

  private CreateNamespaceRequest(Namespace namespace, Map properties) {
    this.namespace = namespace;
    this.properties = properties;
    validate();
  }

  @Override
  public void validate() {
    Preconditions.checkArgument(namespace != null, "Invalid namespace: null");
  }

  public Namespace namespace() {
    return namespace;
  }

  public Map properties() {
    return properties != null ? properties : ImmutableMap.of();
  }

  @Override
  public String toString() {
    return MoreObjects.toStringHelper(this)
        .add("namespace", namespace)
        .add("properties", properties)
        .toString();
  }

  public static Builder builder() {
    return new Builder();
  }

  public static class Builder {
    private Namespace namespace;
    private final ImmutableMap.Builder properties = ImmutableMap.builder();

    private Builder() {}

    public Builder withNamespace(Namespace ns) {
      Preconditions.checkNotNull(ns, "Invalid namespace: null");
      this.namespace = ns;
      return this;
    }

    public Builder setProperties(Map props) {
      Preconditions.checkNotNull(props, "Invalid collection of properties: null");
      Preconditions.checkArgument(!props.containsKey(null), "Invalid property: null");
      Preconditions.checkArgument(
          !props.containsValue(null),
          "Invalid value for properties %s: null",
          Maps.filterValues(props, Objects::isNull).keySet());
      properties.putAll(props);
      return this;
    }

    public CreateNamespaceRequest build() {
      return new CreateNamespaceRequest(namespace, properties.build());
    }
  }
}