mizzkey/src/server/api/endpoints/users/following.ts
2018-11-03 22:49:36 +09:00

100 lines
2 KiB
TypeScript

import $ from 'cafy'; import ID, { transform } from '../../../../misc/cafy-id';
import User from '../../../../models/user';
import Following from '../../../../models/following';
import { pack } from '../../../../models/user';
import { getFriendIds } from '../../common/get-friends';
import define from '../../define';
export const meta = {
desc: {
'ja-JP': '指定したユーザーのフォロー一覧を取得します。',
'en-US': 'Get following users of a user.'
},
requireCredential: false,
params: {
userId: {
validator: $.type(ID),
transform: transform,
desc: {
'ja-JP': '対象のユーザーのID',
'en-US': 'Target user ID'
}
},
limit: {
validator: $.num.optional.range(1, 100),
default: 10
},
cursor: {
validator: $.type(ID).optional,
default: null as any,
transform: transform,
},
iknow: {
validator: $.bool.optional,
default: false,
}
}
};
export default define(meta, (ps, me) => new Promise(async (res, rej) => {
// Lookup user
const user = await User.findOne({
_id: ps.userId
}, {
fields: {
_id: true
}
});
if (user === null) {
return rej('user not found');
}
// Construct query
const query = {
followerId: user._id
} as any;
// ログインしていてかつ iknow フラグがあるとき
if (me && ps.iknow) {
// Get my friends
const myFriends = await getFriendIds(me._id);
query.followeeId = {
$in: myFriends
};
}
// カーソルが指定されている場合
if (ps.cursor) {
query._id = {
$lt: ps.cursor
};
}
// Get followers
const following = await Following
.find(query, {
limit: ps.limit + 1,
sort: { _id: -1 }
});
// 「次のページ」があるかどうか
const inStock = following.length === ps.limit + 1;
if (inStock) {
following.pop();
}
const users = await Promise.all(following.map(f => pack(f.followeeId, me, { detail: true })));
res({
users: users,
next: inStock ? following[following.length - 1]._id : null,
});
}));