rudeshark.net/src/server/api/endpoints/posts/timeline.ts
2018-03-29 14:48:47 +09:00

133 lines
3.3 KiB
TypeScript

/**
* Module dependencies
*/
import $ from 'cafy';
import rap from '@prezzemolo/rap';
import Post from '../../models/post';
import Mute from '../../models/mute';
import ChannelWatching from '../../models/channel-watching';
import getFriends from '../../common/get-friends';
import { pack } from '../../models/post';
/**
* Get timeline of myself
*
* @param {any} params
* @param {any} user
* @param {any} app
* @return {Promise<any>}
*/
module.exports = async (params, user, app) => {
// Get 'limit' parameter
const [limit = 10, limitErr] = $(params.limit).optional.number().range(1, 100).$;
if (limitErr) throw 'invalid limit param';
// Get 'sinceId' parameter
const [sinceId, sinceIdErr] = $(params.sinceId).optional.id().$;
if (sinceIdErr) throw 'invalid sinceId param';
// Get 'untilId' parameter
const [untilId, untilIdErr] = $(params.untilId).optional.id().$;
if (untilIdErr) throw 'invalid untilId param';
// Get 'sinceDate' parameter
const [sinceDate, sinceDateErr] = $(params.sinceDate).optional.number().$;
if (sinceDateErr) throw 'invalid sinceDate param';
// Get 'untilDate' parameter
const [untilDate, untilDateErr] = $(params.untilDate).optional.number().$;
if (untilDateErr) throw 'invalid untilDate param';
// Check if only one of sinceId, untilId, sinceDate, untilDate specified
if ([sinceId, untilId, sinceDate, untilDate].filter(x => x != null).length > 1) {
throw 'only one of sinceId, untilId, sinceDate, untilDate can be specified';
}
const { followingIds, watchingChannelIds, mutedUserIds } = await rap({
// ID list of the user itself and other users who the user follows
followingIds: getFriends(user._id),
// Watchしているチャンネルを取得
watchingChannelIds: ChannelWatching.find({
userId: user._id,
// 削除されたドキュメントは除く
deletedAt: { $exists: false }
}).then(watches => watches.map(w => w.channelId)),
// ミュートしているユーザーを取得
mutedUserIds: Mute.find({
muterId: user._id,
// 削除されたドキュメントは除く
deletedAt: { $exists: false }
}).then(ms => ms.map(m => m.muteeId))
});
//#region Construct query
const sort = {
_id: -1
};
const query = {
$or: [{
// フォローしている人のタイムラインへの投稿
userId: {
$in: followingIds
},
// 「タイムラインへの」投稿に限定するためにチャンネルが指定されていないもののみに限る
$or: [{
channelId: {
$exists: false
}
}, {
channelId: null
}]
}, {
// Watchしているチャンネルへの投稿
channelId: {
$in: watchingChannelIds
}
}],
// mute
userId: {
$nin: mutedUserIds
},
'_reply.userId': {
$nin: mutedUserIds
},
'_repost.userId': {
$nin: mutedUserIds
},
} as any;
if (sinceId) {
sort._id = 1;
query._id = {
$gt: sinceId
};
} else if (untilId) {
query._id = {
$lt: untilId
};
} else if (sinceDate) {
sort._id = 1;
query.createdAt = {
$gt: new Date(sinceDate)
};
} else if (untilDate) {
query.createdAt = {
$lt: new Date(untilDate)
};
}
//#endregion
// Issue query
const timeline = await Post
.find(query, {
limit: limit,
sort: sort
});
// Serialize
return await Promise.all(timeline.map(post => pack(post, user)));
};