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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,80 @@ | ||
| 'use strict'; | ||
|
|
||
| const async = require('async'); | ||
|
|
||
| const db = require('../database'); | ||
| const user = require('../user'); | ||
|
|
||
| module.exports = function (Categories) { | ||
| Categories.watchStates = { | ||
| ignoring: 1, | ||
| notwatching: 2, | ||
| watching: 3, | ||
| }; | ||
|
|
||
| Categories.isIgnored = function (cids, uid, callback) { | ||
| if (!(parseInt(uid, 10) > 0)) { | ||
| return setImmediate(callback, null, cids.map(() => false)); | ||
| } | ||
| async.waterfall([ | ||
| function (next) { | ||
| Categories.getWatchState(cids, uid, next); | ||
| }, | ||
| function (states, next) { | ||
| next(null, states.map(state => state === Categories.watchStates.ignoring)); | ||
| }, | ||
| ], callback); | ||
| }; | ||
|
|
||
| Categories.getWatchState = function (cids, uid, callback) { | ||
| if (!(parseInt(uid, 10) > 0)) { | ||
| return setImmediate(callback, null, cids.map(() => Categories.watchStates.notwatching)); | ||
| } | ||
| if (!Array.isArray(cids) || !cids.length) { | ||
| return setImmediate(callback, null, []); | ||
| } | ||
| async.waterfall([ | ||
| function (next) { | ||
| const keys = cids.map(cid => 'cid:' + cid + ':uid:watch:state'); | ||
| async.parallel({ | ||
| userSettings: async.apply(user.getSettings, uid), | ||
| states: async.apply(db.sortedSetsScore, keys, uid), | ||
| }, next); | ||
| }, | ||
| function (results, next) { | ||
| next(null, results.states.map(state => state || Categories.watchStates[results.userSettings.categoryWatchState])); | ||
| }, | ||
| ], callback); | ||
| }; | ||
|
|
||
| Categories.getIgnorers = function (cid, start, stop, callback) { | ||
| const count = (stop === -1) ? -1 : (stop - start + 1); | ||
| db.getSortedSetRevRangeByScore('cid:' + cid + ':uid:watch:state', start, count, Categories.watchStates.ignoring, Categories.watchStates.ignoring, callback); | ||
| }; | ||
|
|
||
| Categories.filterIgnoringUids = function (cid, uids, callback) { | ||
| async.waterfall([ | ||
| function (next) { | ||
| Categories.getUidsWatchStates(cid, uids, next); | ||
| }, | ||
| function (states, next) { | ||
| const readingUids = uids.filter((uid, index) => uid && states[index] !== Categories.watchStates.ignoring); | ||
| next(null, readingUids); | ||
| }, | ||
| ], callback); | ||
| }; | ||
|
|
||
| Categories.getUidsWatchStates = function (cid, uids, callback) { | ||
| async.waterfall([ | ||
| function (next) { | ||
| async.parallel({ | ||
| userSettings: async.apply(user.getMultipleUserSettings, uids), | ||
| states: async.apply(db.sortedSetScores, 'cid:' + cid + ':uid:watch:state', uids), | ||
| }, next); | ||
| }, | ||
| function (results, next) { | ||
| next(null, results.states.map((state, index) => state || Categories.watchStates[results.userSettings[index].categoryWatchState])); | ||
| }, | ||
| ], callback); | ||
| }; | ||
| }; |
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