92 lines
2.1 KiB
TypeScript
92 lines
2.1 KiB
TypeScript
/**
|
|
* Module dependencies
|
|
*/
|
|
import it from '../../it';
|
|
import User from '../../models/user';
|
|
import Following from '../../models/following';
|
|
import serialize from '../../serializers/user';
|
|
import getFriends from '../../common/get-friends';
|
|
|
|
/**
|
|
* Get following users of a user
|
|
*
|
|
* @param {any} params
|
|
* @param {any} me
|
|
* @return {Promise<any>}
|
|
*/
|
|
module.exports = (params, me) => new Promise(async (res, rej) => {
|
|
// Get 'user_id' parameter
|
|
const [userId, userIdErr] = it(params.user_id, 'id', true);
|
|
if (userIdErr) return rej('invalid user_id param');
|
|
|
|
// Get 'iknow' parameter
|
|
const [iknow, iknowErr] = it(params.iknow).expect.boolean().default(false).qed();
|
|
if (iknowErr) return rej('invalid iknow param');
|
|
|
|
// 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 'cursor' parameter
|
|
const [cursor, cursorErr] = it(params.cursor).expect.id().default(null).qed();
|
|
if (cursorErr) return rej('invalid cursor param');
|
|
|
|
// Lookup user
|
|
const user = await User.findOne({
|
|
_id: userId
|
|
}, {
|
|
fields: {
|
|
_id: true
|
|
}
|
|
});
|
|
|
|
if (user === null) {
|
|
return rej('user not found');
|
|
}
|
|
|
|
// Construct query
|
|
const query = {
|
|
follower_id: user._id,
|
|
deleted_at: { $exists: false }
|
|
} as any;
|
|
|
|
// 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
|
|
const myFriends = await getFriends(me._id);
|
|
|
|
query.followee_id = {
|
|
$in: myFriends
|
|
};
|
|
}
|
|
|
|
// カーソルが指定されている場合
|
|
if (cursor) {
|
|
query._id = {
|
|
$lt: cursor
|
|
};
|
|
}
|
|
|
|
// Get followers
|
|
const following = await Following
|
|
.find(query, {
|
|
limit: limit + 1,
|
|
sort: { _id: -1 }
|
|
});
|
|
|
|
// 「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 =>
|
|
await serialize(f.followee_id, me, { detail: true })));
|
|
|
|
// Response
|
|
res({
|
|
users: users,
|
|
next: inStock ? following[following.length - 1]._id : null,
|
|
});
|
|
});
|