97 lines
2.3 KiB
TypeScript
97 lines
2.3 KiB
TypeScript
/**
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* Module dependencies
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*/
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import $ from 'cafy';
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import rap from '@prezzemolo/rap';
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import Post from '../../models/post';
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import ChannelWatching from '../../models/channel-watching';
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import getFriends from '../../common/get-friends';
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import serialize from '../../serializers/post';
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/**
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* Get timeline of myself
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*
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* @param {any} params
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* @param {any} user
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* @param {any} app
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* @return {Promise<any>}
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*/
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module.exports = (params, user, app) => new Promise(async (res, rej) => {
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// Get 'limit' parameter
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const [limit = 10, limitErr] = $(params.limit).optional.number().range(1, 100).$;
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if (limitErr) return rej('invalid limit param');
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// Get 'since_id' parameter
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const [sinceId, sinceIdErr] = $(params.since_id).optional.id().$;
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if (sinceIdErr) return rej('invalid since_id param');
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// Get 'max_id' parameter
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const [maxId, maxIdErr] = $(params.max_id).optional.id().$;
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if (maxIdErr) return rej('invalid max_id param');
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// Check if both of since_id and max_id is specified
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if (sinceId && maxId) {
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return rej('cannot set since_id and max_id');
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}
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const { followingIds, watchChannelIds } = await rap({
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// ID list of the user itself and other users who the user follows
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followingIds: getFriends(user._id),
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// Watchしているチャンネルを取得
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watchChannelIds: ChannelWatching.find({
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user_id: user._id,
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// 削除されたドキュメントは除く
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deleted_at: { $exists: false }
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}).then(watches => watches.map(w => w.channel_id))
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});
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//#region Construct query
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const sort = {
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_id: -1
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};
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const query = {
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$or: [{
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// フォローしている人のタイムラインへの投稿
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user_id: {
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$in: followingIds
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},
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// 「タイムラインへの」投稿に限定するためにチャンネルが指定されていないもののみに限る
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$or: [{
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channel_id: {
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$exists: false
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}
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}, {
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channel_id: null
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}]
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}, {
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// Watchしているチャンネルへの投稿
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channel_id: {
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$in: watchChannelIds
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}
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}]
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} as any;
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if (sinceId) {
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sort._id = 1;
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query._id = {
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$gt: sinceId
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};
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} else if (maxId) {
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query._id = {
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$lt: maxId
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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 Post
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.find(query, {
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limit: limit,
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sort: sort
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});
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// Serialize
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res(await Promise.all(timeline.map(post => serialize(post, user))));
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});
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