74 lines
1.5 KiB
TypeScript
74 lines
1.5 KiB
TypeScript
'use strict';
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/**
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* Module dependencies
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*/
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import it from '../../it';
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import Post from '../../models/post';
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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) =>
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new Promise(async (res, rej) =>
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{
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// Get 'limit' parameter
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const [limit, limitErr] = it(params.limit).expect.number().range(1, 100).default(10).qed();
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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] = it(params.since_id).expect.id().qed();
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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] = it(params.max_id).expect.id().qed();
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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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// ID list of the user itself and other users who the user follows
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const followingIds = await getFriends(user._id);
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// 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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user_id: {
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$in: followingIds
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}
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} as any;
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if (sinceId) {
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sort._id = 1;
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query._id = {
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$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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// 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(async post =>
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await serialize(post, user)
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)));
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});
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