foreign/node/src/wire/topic/get-topics.command.ts

// 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
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// 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
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// specific language governing permissions and limitations
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//

import type { CommandResponse } from '../../client/client.type.js';
import { wrapCommand } from '../command.utils.js';
import { COMMAND_CODE } from '../command.code.js';
import { serializeIdentifier, type Id } from '../identifier.utils.js';
import { deserializeTopics, type Topic } from './topic.utils.js';

/**
 * Parameters for the get topics command.
 */
export type GetTopics = {
  /** Stream identifier (ID or name) */
  streamId: Id
};

/**
 * Get topics command definition.
 * Retrieves all topics within a stream.
 */
export const GET_TOPICS = {
  code: COMMAND_CODE.GetTopics,

  serialize: ({streamId}: GetTopics) => {
    return serializeIdentifier(streamId);
  },

  deserialize: (r: CommandResponse) => {
    return deserializeTopics(r.data);
  }
};

/**
 * Executable get topics command function.
 */
export const getTopics = wrapCommand<GetTopics, Topic[]>(GET_TOPICS);