86 lines
2.9 KiB
JavaScript
86 lines
2.9 KiB
JavaScript
'use strict';
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module.exports = function () {
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const User = require('../model/user'),
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ObjectId = require('mongodb').ObjectId,
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moment = require('moment'),
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{ Errors } = require('./constants'),
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{ AppParamError, AppAuthError } = require('./app_error');
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return {
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_cache: {},
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get: function (key) { return this._cache[key]; },
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set: function (key, val) { this._cache[key] = val; },
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delete: function (key) {
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delete this._cache[key];
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},
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isExpired: function (key, seconds) {
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const userInfo = this._cache[key];
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if (!userInfo) return false;
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return (!userInfo.ts || (moment.utc().unix() - userInfo.ts) >= seconds);
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},
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clear: function () {
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this._cache = {};
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},
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loadUser: async function (uid) {
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try {
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if (!ObjectId.isValid(uid)) throw AppParamError.throw();
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const updatedRes = await User.aggregate([
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{ $match: { _id: ObjectId(uid) } },
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{ $addFields: { 'parentUser': { $ifNull: ['$parent', '$_id'] } } },
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{
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$lookup: {
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from: 'users',
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let: { parentUser: '$parentUser' },
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pipeline: [{ $match: { $expr: { $eq: ['$_id', '$$parentUser'] } } }],
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as: 'applicator'
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}
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},
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{ $unwind: { path: '$applicator', 'preserveNullAndEmptyArrays': true } },
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{
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$project: {
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puid: '$parentUser',
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kind: 1,
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premium: { $ifNull: ['$applicator.premium', 0] },
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membership: '$applicator.membership', // Also load the user's membership info (applicator's) when fetching user data from DB
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markedDelete: 1,
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lang: 1
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}
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}
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]);
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if (!updatedRes || !updatedRes.length) AppAuthError.throw();
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const userInfo = updatedRes[0];
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this.set(uid,
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{
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kind: userInfo.kind, puid: userInfo.puid.toHexString(), premium: userInfo.premium, membership: userInfo.membership, lang: userInfo.lang || DEFAULT_LANG,
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markedDelete: userInfo.markedDelete || false, ts: moment.utc().unix()
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}
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);
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return userInfo;
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} catch (err) {
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throw err;
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}
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},
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/**
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* Filter cache entries by parent user and kind
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* @param { string } pUser required
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* @param { number } kind user type
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* @returns [[key, value ]] array of logged in user and session info object
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*/
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filterByKind: function (pUser, kind) {
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const all = Object.entries(this._cache) || [];
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if (kind === undefined) {
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return all.filter(it => {
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return Object.values(it).length > 1 && Object.values(it)[1]['puid'] === pUser;
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});
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} else {
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return all.filter(it => Object.values(it).length > 1 && (Object.values(it)[1]['puid'] === pUser && Object.values(it)[1]['type'] === kind));
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}
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}
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}
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}(); |