egirlskey/src/server/api/endpoints/notes/timeline.ts

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/**
* Module dependencies
*/
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import $ from 'cafy'; import ID from '../../../../cafy-id';
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import Note from '../../../../models/note';
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import Mute from '../../../../models/mute';
import ChannelWatching from '../../../../models/channel-watching';
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import { getFriends } from '../../common/get-friends';
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import { pack } from '../../../../models/note';
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/**
* Get timeline of myself
*/
module.exports = async (params, user, app) => {
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// Get 'limit' parameter
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const [limit = 10, limitErr] = $(params.limit).optional.number().range(1, 100).get();
if (limitErr) throw 'invalid limit param';
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// Get 'sinceId' parameter
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const [sinceId, sinceIdErr] = $(params.sinceId).optional.type(ID).get();
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if (sinceIdErr) throw 'invalid sinceId param';
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// Get 'untilId' parameter
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const [untilId, untilIdErr] = $(params.untilId).optional.type(ID).get();
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if (untilIdErr) throw 'invalid untilId param';
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// Get 'sinceDate' parameter
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const [sinceDate, sinceDateErr] = $(params.sinceDate).optional.number().get();
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if (sinceDateErr) throw 'invalid sinceDate param';
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// Get 'untilDate' parameter
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const [untilDate, untilDateErr] = $(params.untilDate).optional.number().get();
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if (untilDateErr) throw 'invalid untilDate param';
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// Check if only one of sinceId, untilId, sinceDate, untilDate specified
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if ([sinceId, untilId, sinceDate, untilDate].filter(x => x != null).length > 1) {
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throw 'only one of sinceId, untilId, sinceDate, untilDate can be specified';
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}
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// Get 'includeMyRenotes' parameter
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const [includeMyRenotes = true, includeMyRenotesErr] = $(params.includeMyRenotes).optional.boolean().get();
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if (includeMyRenotesErr) throw 'invalid includeMyRenotes param';
// Get 'includeRenotedMyNotes' parameter
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const [includeRenotedMyNotes = true, includeRenotedMyNotesErr] = $(params.includeRenotedMyNotes).optional.boolean().get();
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if (includeRenotedMyNotesErr) throw 'invalid includeRenotedMyNotes param';
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const [followings, watchingChannelIds, mutedUserIds] = await Promise.all([
// フォローを取得
// Fetch following
getFriends(user._id),
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// Watchしているチャンネルを取得
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ChannelWatching.find({
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userId: user._id,
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// 削除されたドキュメントは除く
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deletedAt: { $exists: false }
}).then(watches => watches.map(w => w.channelId)),
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// ミュートしているユーザーを取得
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Mute.find({
muterId: user._id
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}).then(ms => ms.map(m => m.muteeId))
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]);
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//#region Construct query
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const sort = {
_id: -1
};
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const followQuery = followings.map(f => f.stalk ? {
userId: f.id
} : {
userId: f.id,
// ストーキングしてないならリプライは含めない(ただし投稿者自身の投稿へのリプライ、自分の投稿へのリプライ、自分のリプライは含める)
$or: [{
// リプライでない
replyId: null
}, { // または
// リプライだが返信先が投稿者自身の投稿
$expr: {
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$eq: ['$_reply.userId', '$userId']
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}
}, { // または
// リプライだが返信先が自分(フォロワー)の投稿
'_reply.userId': user._id
}, { // または
// 自分(フォロワー)が送信したリプライ
userId: user._id
}]
});
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const query = {
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$and: [{
$or: [{
$and: [{
// フォローしている人のタイムラインへの投稿
$or: followQuery
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}, {
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// 「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
}]
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}]
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}, {
// 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
},
'_renote.userId': {
$nin: mutedUserIds
},
}]
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} as any;
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// MongoDBではトップレベルで否定ができないため、De Morganの法則を利用してクエリします。
// つまり、「『自分の投稿かつRenote』ではない」を「『自分の投稿ではない』または『Renoteではない』」と表現します。
// for details: https://en.wikipedia.org/wiki/De_Morgan%27s_laws
if (includeMyRenotes === false) {
query.$and.push({
$or: [{
userId: { $ne: user._id }
}, {
renoteId: null
}, {
text: { $ne: null }
}, {
mediaIds: { $ne: [] }
}, {
poll: { $ne: null }
}]
});
}
if (includeRenotedMyNotes === false) {
query.$and.push({
$or: [{
'_renote.userId': { $ne: user._id }
}, {
renoteId: null
}, {
text: { $ne: null }
}, {
mediaIds: { $ne: [] }
}, {
poll: { $ne: null }
}]
});
}
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if (sinceId) {
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sort._id = 1;
query._id = {
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$gt: sinceId
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};
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} else if (untilId) {
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query._id = {
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$lt: untilId
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};
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} else if (sinceDate) {
sort._id = 1;
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query.createdAt = {
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$gt: new Date(sinceDate)
};
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} else if (untilDate) {
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query.createdAt = {
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$lt: new Date(untilDate)
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};
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}
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//#endregion
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// Issue query
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const timeline = await Note
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.find(query, {
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limit: limit,
sort: sort
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});
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// Serialize
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return await Promise.all(timeline.map(note => pack(note, user)));
};