matrix-public-archive/server/lib/matrix-utils/fetch-public-rooms.js

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'use strict';
const assert = require('assert');
const urlJoin = require('url-join');
const { fetchEndpointAsJson } = require('../fetch-endpoint');
const { traceFunction } = require('../../tracing/trace-utilities');
const config = require('../config');
const matrixServerUrl = config.get('matrixServerUrl');
assert(matrixServerUrl);
async function fetchPublicRooms(accessToken, { server, searchTerm, paginationToken, limit } = {}) {
assert(accessToken);
let qs = new URLSearchParams();
if (server) {
qs.append('server', server);
}
const publicRoomsEndpoint = urlJoin(
matrixServerUrl,
`_matrix/client/v3/publicRooms?${qs.toString()}`
);
const { data: publicRoomsRes } = await fetchEndpointAsJson(publicRoomsEndpoint, {
method: 'POST',
body: {
include_all_networks: true,
filter: {
generic_search_term: searchTerm,
},
since: paginationToken,
limit,
},
accessToken,
});
// We only want to see public rooms in the archive
const accessibleRooms = publicRoomsRes.chunk.filter((room) => {
// `room.world_readable` is also accessible here but we only use history
// `world_readable` to determine search indexing.
return room.join_rule === 'public';
});
return {
rooms: accessibleRooms,
nextPaginationToken: publicRoomsRes.next_batch,
prevPaginationToken: publicRoomsRes.prev_batch,
};
}
module.exports = traceFunction(fetchPublicRooms);