Sharkey/src/server/api/endpoints/users/following.ts

85 lines
2 KiB
TypeScript
Raw Normal View History

2018-07-07 13:19:00 +03:00
import $ from 'cafy'; import ID from '../../../../misc/cafy-id';
2018-06-18 03:54:53 +03:00
import User, { ILocalUser } from '../../../../models/user';
2018-03-29 14:32:18 +03:00
import Following from '../../../../models/following';
import { pack } from '../../../../models/user';
2018-04-19 06:43:25 +03:00
import { getFriendIds } from '../../common/get-friends';
2016-12-29 00:49:51 +02:00
/**
* Get following users of a user
*/
2018-07-05 20:58:29 +03:00
export default (params: any, me: ILocalUser) => new Promise(async (res, rej) => {
2018-03-29 08:48:47 +03:00
// Get 'userId' parameter
2018-05-02 12:06:16 +03:00
const [userId, userIdErr] = $.type(ID).get(params.userId);
2018-03-29 08:48:47 +03:00
if (userIdErr) return rej('invalid userId param');
2016-12-29 00:49:51 +02:00
// Get 'iknow' parameter
2018-07-05 17:36:07 +03:00
const [iknow = false, iknowErr] = $.bool.optional.get(params.iknow);
2017-03-03 00:47:14 +02:00
if (iknowErr) return rej('invalid iknow param');
2016-12-29 00:49:51 +02:00
// Get 'limit' parameter
2018-07-05 17:36:07 +03:00
const [limit = 10, limitErr] = $.num.optional.range(1, 100).get(params.limit);
2017-03-03 00:47:14 +02:00
if (limitErr) return rej('invalid limit param');
2016-12-29 00:49:51 +02:00
// Get 'cursor' parameter
2018-07-05 17:36:07 +03:00
const [cursor = null, cursorErr] = $.type(ID).optional.get(params.cursor);
2017-03-03 00:47:14 +02:00
if (cursorErr) return rej('invalid cursor param');
2016-12-29 00:49:51 +02:00
// Lookup user
const user = await User.findOne({
2017-03-03 00:47:14 +02:00
_id: userId
2017-02-22 06:08:33 +02:00
}, {
fields: {
_id: true
}
2016-12-29 00:49:51 +02:00
});
if (user === null) {
return rej('user not found');
}
// Construct query
const query = {
followerId: user._id
2017-03-03 00:47:14 +02:00
} as any;
2016-12-29 00:49:51 +02:00
// ログインしていてかつ iknow フラグがあるとき
if (me && iknow) {
// Get my friends
2018-04-19 06:43:25 +03:00
const myFriends = await getFriendIds(me._id);
2016-12-29 00:49:51 +02:00
2018-03-29 08:48:47 +03:00
query.followeeId = {
2016-12-29 00:49:51 +02:00
$in: myFriends
};
}
// カーソルが指定されている場合
if (cursor) {
query._id = {
2017-03-03 00:47:14 +02:00
$lt: cursor
2016-12-29 00:49:51 +02:00
};
}
// Get followers
const following = await Following
2017-01-17 04:11:22 +02:00
.find(query, {
2016-12-29 00:49:51 +02:00
limit: limit + 1,
sort: { _id: -1 }
2017-01-17 04:11:22 +02:00
});
2016-12-29 00:49:51 +02:00
// 「次のページ」があるかどうか
const inStock = following.length === limit + 1;
if (inStock) {
following.pop();
}
// Serialize
const users = await Promise.all(following.map(async f =>
2018-03-29 08:48:47 +03:00
await pack(f.followeeId, me, { detail: true })));
2016-12-29 00:49:51 +02:00
// Response
res({
users: users,
next: inStock ? following[following.length - 1]._id : null,
});
});