@ethersphere/bee-js/dist/cjs/modules/feed.js

Javascript client for Bee

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
exports.probeFeed = exports.fetchLatestFeedUpdate = exports.createFeedManifest = void 0;
const cafe_utility_1 = require("cafe-utility");
const bytes_1 = require("../utils/bytes");
const error_1 = require("../utils/error");
const headers_1 = require("../utils/headers");
const http_1 = require("../utils/http");
const typed_bytes_1 = require("../utils/typed-bytes");
const feedEndpoint = 'feeds';
/**
 * Create an initial feed root manifest
 *
 * @param requestOptions  Options for making requests
 * @param owner           Owner's ethereum address in hex
 * @param topic           Topic in hex
 * @param postageBatchId  Postage BatchId to be used to create the Feed Manifest
 * @param options         Additional options, like type (default: 'sequence')
 */
async function createFeedManifest(requestOptions, owner, topic, stamp, options) {
    const response = await (0, http_1.http)(requestOptions, {
        method: 'post',
        responseType: 'json',
        url: `${feedEndpoint}/${owner}/${topic}`,
        headers: (0, headers_1.prepareRequestHeaders)(stamp, options),
    });
    const body = cafe_utility_1.Types.asObject(response.data, { name: 'response.data' });
    return new typed_bytes_1.Reference(cafe_utility_1.Types.asHexString(body.reference));
}
exports.createFeedManifest = createFeedManifest;
function readFeedUpdateHeaders(headers) {
    const feedIndex = headers['swarm-feed-index'];
    const feedIndexNext = headers['swarm-feed-index-next'];
    if (!feedIndex) {
        throw new error_1.BeeError('Response did not contain expected swarm-feed-index!');
    }
    if (!feedIndexNext) {
        throw new error_1.BeeError('Response did not contain expected swarm-feed-index-next!');
    }
    return {
        feedIndex: new typed_bytes_1.FeedIndex(feedIndex),
        feedIndexNext: new typed_bytes_1.FeedIndex(feedIndexNext),
    };
}
/**
 * Find and retrieve feed update
 *
 * The feed consists of updates. This endpoint looks up an
 * update that matches the provided parameters and returns
 * the reference it contains along with its index and the
 * index of the subsequent update.
 *
 * @param requestOptions Options for making requests
 * @param owner          Owner's ethereum address
 * @param topic          Topic
 * @param options        Additional options, like index, at, type
 */
async function fetchLatestFeedUpdate(requestOptions, owner, topic, options) {
    const response = await (0, http_1.http)(requestOptions, {
        responseType: 'arraybuffer',
        url: `${feedEndpoint}/${owner}/${topic}`,
        params: options,
    });
    return {
        payload: new bytes_1.Bytes(response.data),
        ...readFeedUpdateHeaders(response.headers),
    };
}
exports.fetchLatestFeedUpdate = fetchLatestFeedUpdate;
async function probeFeed(requestOptions, owner, topic) {
    const response = await (0, http_1.http)(requestOptions, {
        responseType: 'arraybuffer',
        url: `${feedEndpoint}/${owner}/${topic}`,
        params: {
            'Swarm-Only-Root-Chunk': true,
        },
    });
    return readFeedUpdateHeaders(response.headers);
}
exports.probeFeed = probeFeed;