"use strict"; var async = require('async'), validator = require('validator'), _ = require('underscore'), db = require('./database'), posts = require('./posts'), utils = require('../public/src/utils'), plugins = require('./plugins'), user = require('./user'), categories = require('./categories'), privileges = require('./privileges'); (function(Topics) { require('./topics/create')(Topics); require('./topics/delete')(Topics); require('./topics/unread')(Topics); require('./topics/recent')(Topics); require('./topics/popular')(Topics); require('./topics/user')(Topics); require('./topics/fork')(Topics); require('./topics/posts')(Topics); require('./topics/follow')(Topics); require('./topics/tags')(Topics); require('./topics/teaser')(Topics); require('./topics/suggested')(Topics); Topics.exists = function(tid, callback) { db.isSortedSetMember('topics:tid', tid, callback); }; Topics.getTopicData = function(tid, callback) { db.getObject('topic:' + tid, function(err, topic) { if (err || !topic) { return callback(err); } modifyTopic(topic, callback); }); }; Topics.getTopicsData = function(tids, callback) { var keys = []; for (var i=0; i<tids.length; ++i) { keys.push('topic:' + tids[i]); } db.getObjects(keys, function(err, topics) { if (err) { return callback(err); } async.map(topics, modifyTopic, callback); }); }; function modifyTopic(topic, callback) { if (!topic) { return callback(null, topic); } topic.title = validator.escape(topic.title); topic.relativeTime = utils.toISOString(topic.timestamp); callback(null, topic); } Topics.getPageCount = function(tid, uid, callback) { Topics.getTopicField(tid, 'postcount', function(err, postCount) { if (err) { return callback(err); } if (!parseInt(postCount, 10)) { return callback(null, 1); } user.getSettings(uid, function(err, settings) { if (err) { return callback(err); } callback(null, Math.ceil((parseInt(postCount, 10) - 1) / settings.postsPerPage)); }); }); }; Topics.getTidPage = function(tid, uid, callback) { if(!tid) { return callback(new Error('[[error:invalid-tid]]')); } async.parallel({ index: function(next) { categories.getTopicIndex(tid, next); }, settings: function(next) { user.getSettings(uid, next); } }, function(err, results) { if(err) { return callback(err); } callback(null, Math.ceil((results.index + 1) / results.settings.topicsPerPage)); }); }; Topics.getCategoryData = function(tid, callback) { Topics.getTopicField(tid, 'cid', function(err, cid) { if (err) { callback(err); } categories.getCategoryData(cid, callback); }); }; Topics.getTopicsFromSet = function(set, uid, start, stop, callback) { async.waterfall([ function(next) { db.getSortedSetRevRange(set, start, stop, next); }, function(tids, next) { Topics.getTopics(tids, uid, next); }, function(topics, next) { next(null, {topics: topics, nextStart: stop + 1}); } ], callback); }; Topics.getTopics = function(tids, uid, callback) { async.waterfall([ function(next) { privileges.topics.filter('read', tids, uid, next); }, function(tids, next) { Topics.getTopicsByTids(tids, uid, next); } ], callback); }; Topics.getTopicsByTids = function(tids, uid, callback) { if (!Array.isArray(tids) || !tids.length) { return callback(null, []); } Topics.getTopicsData(tids, function(err, topics) { function mapFilter(array, field) { return array.map(function(topic) { return topic && topic[field] && topic[field].toString(); }).filter(function(value, index, array) { return utils.isNumber(value) && array.indexOf(value) === index; }); } if (err) { return callback(err); } var uids = mapFilter(topics, 'uid'); var cids = mapFilter(topics, 'cid'); async.parallel({ teasers: function(next) { Topics.getTeasers(topics, next); }, users: function(next) { user.getMultipleUserFields(uids, ['uid', 'username', 'userslug', 'picture'], next); }, categories: function(next) { categories.getMultipleCategoryFields(cids, ['cid', 'name', 'slug', 'icon', 'bgColor', 'color', 'disabled'], next); }, hasRead: function(next) { Topics.hasReadTopics(tids, uid, next); }, tags: function(next) { Topics.getTopicsTagsObjects(tids, next); } }, function(err, results) { if (err) { return callback(err); } var users = _.object(uids, results.users); var categories = _.object(cids, results.categories); for (var i=0; i<topics.length; ++i) { if (topics[i]) { topics[i].category = categories[topics[i].cid]; topics[i].user = users[topics[i].uid]; topics[i].teaser = results.teasers[i]; topics[i].tags = results.tags[i]; topics[i].isOwner = parseInt(topics[i].uid, 10) === parseInt(uid, 10); topics[i].pinned = parseInt(topics[i].pinned, 10) === 1; topics[i].locked = parseInt(topics[i].locked, 10) === 1; topics[i].deleted = parseInt(topics[i].deleted, 10) === 1; topics[i].unread = !results.hasRead[i]; topics[i].unreplied = parseInt(topics[i].postcount, 10) <= 1; } } topics = topics.filter(function(topic) { return topic && topic.category && !topic.category.disabled; }); plugins.fireHook('filter:topics.get', {topics: topics, uid: uid}, function(err, topicData) { callback(err, topicData.topics); }); }); }); }; Topics.getTopicWithPosts = function(tid, set, uid, start, stop, reverse, callback) { Topics.getTopicData(tid, function(err, topicData) { if (err || !topicData) { return callback(err || new Error('[[error:no-topic]]')); } async.parallel({ posts: async.apply(getMainPostAndReplies, topicData, set, uid, start, stop, reverse), category: async.apply(Topics.getCategoryData, tid), threadTools: async.apply(plugins.fireHook, 'filter:topic.thread_tools', {topic: topicData, uid: uid, tools: []}), tags: async.apply(Topics.getTopicTagsObjects, tid), isFollowing: async.apply(Topics.isFollowing, [tid], uid) }, function(err, results) { if (err) { return callback(err); } topicData.posts = results.posts; topicData.category = results.category; topicData.thread_tools = results.threadTools.tools; topicData.tags = results.tags; topicData.isFollowing = results.isFollowing[0]; topicData.unreplied = parseInt(topicData.postcount, 10) === 1; topicData.deleted = parseInt(topicData.deleted, 10) === 1; topicData.locked = parseInt(topicData.locked, 10) === 1; topicData.pinned = parseInt(topicData.pinned, 10) === 1; plugins.fireHook('filter:topic.get', {topic: topicData, uid: uid}, function(err, data) { callback(err, data ? data.topic : null); }); }); }); }; function getMainPostAndReplies(topic, set, uid, start, stop, reverse, callback) { async.waterfall([ function(next) { posts.getPidsFromSet(set, start, stop, reverse, next); }, function(pids, next) { if ((!Array.isArray(pids) || !pids.length) && !topic.mainPid) { return callback(null, []); } if (topic.mainPid) { pids.unshift(topic.mainPid); } posts.getPostsByPids(pids, uid, next); }, function(posts, next) { if (!posts.length) { return next(null, []); } if (topic.mainPid) { posts[0].index = 0; } var indices = Topics.calculatePostIndices(start, stop, topic.postcount, reverse); for (var i=1; i<posts.length; ++i) { if (posts[i]) { posts[i].index = indices[i - 1]; } } Topics.addPostData(posts, uid, callback); } ]); } Topics.getMainPost = function(tid, uid, callback) { Topics.getMainPosts([tid], uid, function(err, mainPosts) { callback(err, Array.isArray(mainPosts) && mainPosts.length ? mainPosts[0] : null); }); }; Topics.getMainPids = function(tids, callback) { if (!Array.isArray(tids) || !tids.length) { return callback(null, []); } Topics.getTopicsFields(tids, ['mainPid'], function(err, topicData) { if (err) { return callback(err); } var mainPids = topicData.map(function(topic) { return topic && topic.mainPid; }); callback(null, mainPids); }); }; Topics.getMainPosts = function(tids, uid, callback) { Topics.getMainPids(tids, function(err, mainPids) { if (err) { return callback(err); } getMainPosts(mainPids, uid, callback); }); }; function getMainPosts(mainPids, uid, callback) { posts.getPostsByPids(mainPids, uid, function(err, postData) { if (err) { return callback(err); } postData.forEach(function(post) { if (post) { post.index = 0; } }); Topics.addPostData(postData, uid, callback); }); } Topics.getTopicField = function(tid, field, callback) { db.getObjectField('topic:' + tid, field, callback); }; Topics.getTopicFields = function(tid, fields, callback) { db.getObjectFields('topic:' + tid, fields, callback); }; Topics.getTopicsFields = function(tids, fields, callback) { if (!Array.isArray(tids) || !tids.length) { return callback(null, []); } var keys = tids.map(function(tid) { return 'topic:' + tid; }); db.getObjectsFields(keys, fields, callback); }; Topics.setTopicField = function(tid, field, value, callback) { db.setObjectField('topic:' + tid, field, value, callback); }; Topics.isLocked = function(tid, callback) { Topics.getTopicField(tid, 'locked', function(err, locked) { callback(err, parseInt(locked, 10) === 1); }); }; Topics.search = function(tid, term, callback) { if (plugins.hasListeners('filter:topic.search')) { plugins.fireHook('filter:topic.search', { tid: tid, term: term }, callback); } else { callback(new Error('no-plugins-available'), []); } }; }(exports));