misskey/src/server/api/endpoints/channels.ts

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/**
* Module dependencies
*/
import $ from 'cafy';
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import Channel, { pack } from '../../../models/channel';
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/**
* Get all channels
*
* @param {any} params
* @param {any} me
* @return {Promise<any>}
*/
module.exports = (params, me) => new Promise(async (res, rej) => {
// Get 'limit' parameter
const [limit = 10, limitErr] = $(params.limit).optional.number().range(1, 100).$;
if (limitErr) return rej('invalid limit param');
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// Get 'sinceId' parameter
const [sinceId, sinceIdErr] = $(params.sinceId).optional.id().$;
if (sinceIdErr) return rej('invalid sinceId param');
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// Get 'untilId' parameter
const [untilId, untilIdErr] = $(params.untilId).optional.id().$;
if (untilIdErr) return rej('invalid untilId param');
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// Check if both of sinceId and untilId is specified
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if (sinceId && untilId) {
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return rej('cannot set sinceId and untilId');
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}
// Construct query
const sort = {
_id: -1
};
const query = {} as any;
if (sinceId) {
sort._id = 1;
query._id = {
$gt: sinceId
};
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} else if (untilId) {
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query._id = {
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$lt: untilId
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};
}
// Issue query
const channels = await Channel
.find(query, {
limit: limit,
sort: sort
});
// Serialize
res(await Promise.all(channels.map(async channel =>
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await pack(channel, me))));
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});