80 lines
1.6 KiB
JavaScript
80 lines
1.6 KiB
JavaScript
'use strict';
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/**
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* Module dependencies
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*/
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import * as mongo from 'mongodb';
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import User from '../../../models/user';
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import Following from '../../../models/following';
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/**
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* Aggregate followers of a user
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*
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* @param {any} params
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* @return {Promise<any>}
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*/
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module.exports = (params) =>
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new Promise(async (res, rej) =>
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{
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// Get 'user_id' parameter
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const userId = params.user_id;
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if (userId === undefined || userId === null) {
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return rej('user_id is required');
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}
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// Lookup user
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const user = await User.findOne({
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_id: new mongo.ObjectID(userId)
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}, {
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fields: {
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_id: true
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}
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});
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if (user === null) {
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return rej('user not found');
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}
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const startTime = new Date(new Date().setMonth(new Date().getMonth() - 1));
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const following = await Following
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.find({
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followee_id: user._id,
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$or: [
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{ deleted_at: { $exists: false } },
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{ deleted_at: { $gt: startTime } }
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]
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}, {
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_id: false,
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follower_id: false,
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followee_id: false
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}, {
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sort: { created_at: -1 }
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});
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const graph = [];
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for (let i = 0; i < 30; i++) {
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let day = new Date(new Date().setDate(new Date().getDate() - i));
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day = new Date(day.setMilliseconds(999));
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day = new Date(day.setSeconds(59));
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day = new Date(day.setMinutes(59));
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day = new Date(day.setHours(23));
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// day = day.getTime();
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const count = following.filter(f =>
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f.created_at < day && (f.deleted_at == null || f.deleted_at > day)
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).length;
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graph.push({
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date: {
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year: day.getFullYear(),
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month: day.getMonth() + 1, // In JavaScript, month is zero-based.
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day: day.getDate()
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},
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count: count
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});
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}
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res(graph);
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});
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