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/*
 * Copyright DataStax, Inc.
 *
 * 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 com.datastax.oss.driver.api.querybuilder.schema;

import com.datastax.oss.driver.api.core.CqlIdentifier;
import com.datastax.oss.driver.api.core.type.DataType;
import com.datastax.oss.driver.api.core.type.DataTypes;
import com.datastax.oss.driver.api.querybuilder.SchemaBuilder;
import edu.umd.cs.findbugs.annotations.NonNull;

public interface CreateAggregateStart {
  /**
   * Adds IF NOT EXISTS to the create aggregate specification. This indicates that the aggregate
   * should not be created if it already exists.
   */
  @NonNull
  CreateAggregateStart ifNotExists();

  /**
   * Adds OR REPLACE to the create aggregate specification. This indicates that the aggregate should
   * replace an existing aggregate with the same name if it exists.
   */
  @NonNull
  CreateAggregateStart orReplace();

  /**
   * Adds a parameter definition in the CREATE AGGREGATE statement.
   *
   * Parameter keys are added in the order of their declaration.
   *
   * To create the data type, use the constants and static methods in {@link DataTypes}, or
   * {@link SchemaBuilder#udt(CqlIdentifier, boolean)}.
   */
  @NonNull
  CreateAggregateStart withParameter(@NonNull DataType paramType);

  /** Adds SFUNC to the create aggregate specification. This is the state function for each row. */
  @NonNull
  CreateAggregateStateFunc withSFunc(@NonNull CqlIdentifier sfuncName);

  /** Shortcut for {@link #withSFunc(CqlIdentifier) withSFunc(CqlIdentifier.fromCql(sfuncName))}. */
  @NonNull
  default CreateAggregateStateFunc withSFunc(@NonNull String sfuncName) {
    return withSFunc(CqlIdentifier.fromCql(sfuncName));
  }
}