hippofish/src/api/endpoints/users/recommendation.ts
2017-03-03 07:47:14 +09:00

48 lines
1.1 KiB
TypeScript

'use strict';
/**
* Module dependencies
*/
import it from '../../it';
import User from '../../models/user';
import serialize from '../../serializers/user';
import getFriends from '../../common/get-friends';
/**
* Get recommended users
*
* @param {any} params
* @param {any} me
* @return {Promise<any>}
*/
module.exports = (params, me) =>
new Promise(async (res, rej) =>
{
// Get 'limit' parameter
const [limit, limitErr] = it(params.limit).expect.number().range(1, 100).default(10).qed();
if (limitErr) return rej('invalid limit param');
// Get 'offset' parameter
const [offset, offsetErr] = it(params.offset).expect.number().min(0).default(0).qed();
if (offsetErr) return rej('invalid offset param');
// ID list of the user itself and other users who the user follows
const followingIds = await getFriends(me._id);
const users = await User
.find({
_id: {
$nin: followingIds
}
}, {
limit: limit,
skip: offset,
sort: {
followers_count: -1
}
});
// Serialize
res(await Promise.all(users.map(async user =>
await serialize(user, me, { detail: true }))));
});