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74 lines
1.8 KiB
JavaScript
74 lines
1.8 KiB
JavaScript
7 years ago
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'use strict';
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var async = require('async');
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var db = require('../database');
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var LRU = require('lru-cache');
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module.exports = function (User) {
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User.blocks = {
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_cache: LRU({
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max: 100,
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length: function () { return 1; },
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maxAge: 0,
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}),
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};
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User.blocks.is = function (targetUid, uid, callback) {
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User.blocks.list(uid, function (err, blocks) {
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callback(err, blocks.includes(parseInt(targetUid, 10)));
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});
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};
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User.blocks.list = function (uid, callback) {
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if (User.blocks._cache.has(uid)) {
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return setImmediate(callback, null, User.blocks._cache.get(uid));
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}
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db.getSortedSetRange('uid:' + uid + ':blocked_uids', 0, -1, function (err, blocked) {
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if (err) {
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return callback(err);
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}
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// for debugging
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blocked = [2];
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blocked = blocked.map(uid => parseInt(uid, 10)).filter(Boolean);
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User.blocks._cache.set(uid, blocked);
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callback(null, blocked);
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});
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};
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User.blocks.add = function (targetUid, uid, callback) {
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async.waterfall([
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async.apply(db.sortedSetAdd.bind(db), 'uid:' + uid + ':blocked_uids', Date.now(), targetUid),
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async.apply(User.blocks.list, uid),
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], callback);
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};
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User.blocks.remove = function (targetUid, uid, callback) {
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async.waterfall([
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async.apply(db.sortedSetRemove.bind(db), 'uid:' + uid + ':blocked_uids', targetUid),
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async.apply(User.blocks.list, uid),
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], callback);
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};
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User.blocks.filter = function (uid, set, callback) {
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// Given whatever is passed in, iterates through it, and removes made by blocked uids
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if (!Array.isArray(set) || !set[0].hasOwnProperty('uid')) {
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return callback(null, set);
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}
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User.blocks.list(uid, function (err, blocked_uids) {
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if (err) {
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return callback(err);
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}
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set = set.filter(function (item) {
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return !blocked_uids.includes(parseInt(item.uid, 10));
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});
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callback(null, set);
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});
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};
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};
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