You cannot select more than 25 topics Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
nodebb/src/topics.js

475 lines
12 KiB
JavaScript

var RDB = require('./redis.js'),
posts = require('./posts.js'),
utils = require('./utils.js'),
user = require('./user.js'),
configs = require('../config.js'),
categories = require('./categories.js'),
marked = require('marked'),
async = require('async');
marked.setOptions({
breaks: true
});
(function(Topics) {
Topics.get_by_category = function(callback, category, start, end) {
}
Topics.get = function(callback, category_id, current_user, start, end) {
if (start == null) start = 0;
if (end == null) end = start + 10;
//build a proper wrapper for this and move it into above function later
var range_var = (category_id) ? 'categories:' + category_id + ':tid' : 'topics:tid';
RDB.smembers(range_var, function(err, tids) {
var title = [],
uid = [],
timestamp = [],
slug = [],
postcount = [],
locked = [],
deleted = [],
pinned = [];
for (var i=0, ii=tids.length; i<ii; i++) {
title.push('tid:' + tids[i] + ':title');
uid.push('tid:' + tids[i] + ':uid');
timestamp.push('tid:' + tids[i] + ':timestamp');
slug.push('tid:' + tids[i] + ':slug');
postcount.push('tid:' + tids[i] + ':postcount');
locked.push('tid:' + tids[i] + ':locked');
deleted.push('tid:' + tids[i] + ':deleted');
pinned.push('tid:' + tids[i] + ':pinned');
}
var multi = RDB.multi()
.get('cid:' + category_id + ':name')
.smembers('cid:' + category_id + ':active_users');
if (tids.length > 0) {
multi
.mget(title)
.mget(uid)
.mget(timestamp)
.mget(slug)
.mget(postcount)
.mget(locked)
.mget(deleted)
.mget(pinned)
}
multi.exec(function(err, replies) {
category_name = replies[0];
if(category_id && category_name === null) {
callback(false);
return;
}
active_usernames = replies[1];
var topics = [];
title = replies[2];
uid = replies[3];
timestamp = replies[4];
slug = replies[5];
postcount = replies[6];
locked = replies[7];
deleted = replies[8];
pinned = replies[9];
var usernames,
has_read,
moderators,
teaser_info;
function generate_topic() {
if (!usernames || !has_read || !moderators || !teaser_info) return;
if (tids.length > 0) {
for (var i=0, ii=title.length; i<ii; i++) {
topics.push({
'title' : title[i],
'uid' : uid[i],
'username': usernames[i],
'timestamp' : timestamp[i],
'relativeTime': utils.relativeTime(timestamp[i]),
'slug' : slug[i],
'post_count' : postcount[i],
'lock-icon': locked[i] === '1' ? 'icon-lock' : 'none',
'deleted': deleted[i],
'pinned': parseInt(pinned[i] || 0), // For sorting purposes
'pin-icon': pinned[i] === '1' ? 'icon-pushpin' : 'none',
'badgeclass' : (has_read[i] && current_user !=0) ? '' : 'badge-important',
'teaser_text': teaser_info[i].text,
'teaser_username': teaser_info[i].username
});
}
}
// Float pinned topics to the top
topics = topics.sort(function(a, b) {
if (a.pinned !== b.pinned) return b.pinned - a.pinned;
else {
// Sort by datetime descending
return b.timestamp - a.timestamp;
}
});
var active_users = [];
for (var username in active_usernames) {
active_users.push({'username': active_usernames[username]});
}
callback({
'category_name' : category_id ? category_name : 'Recent',
'show_topic_button' : category_id ? 'show' : 'hidden',
'category_id': category_id || 0,
'topics': topics,
'active_users': active_users,
'moderator_block_class': moderators.length > 0 ? '' : 'none',
'moderators': moderators
});
}
user.get_usernames_by_uids(uid, function(userNames) {
usernames = userNames;
generate_topic();
});
Topics.hasReadTopics(tids, current_user, function(hasRead) {
has_read = hasRead;
generate_topic();
});
categories.getModerators(category_id, function(mods) {
moderators = mods;
generate_topic();
});
Topics.get_teasers(tids, function(teasers) {
teaser_info = teasers;
generate_topic();
});
// else {
// callback({
// 'category_name' : category_id ? category_name : 'Recent',
// 'show_topic_button' : category_id ? 'show' : 'hidden',
// 'category_id': category_id || 0,
// 'topics': []
// });
// }
});
});
}
Topics.get_topic = function(tid, uid, callback) {
var topicData = {};
async.parallel([
function(next) {
RDB.mget([
'tid:' + tid + ':title',
'tid:' + tid + ':uid',
'tid:' + tid + ':timestamp',
'tid:' + tid + ':slug',
'tid:' + tid + ':postcount',
'tid:' + tid + ':locked',
'tid:' + tid + ':pinned',
'tid:' + tid + ':deleted'
], function(err, topic) {
topicData.title = topic[0];
topicData.uid = topic[1];
topicData.timestamp = topic[2];
topicData.relativeTime = utils.relativeTime(topic[2]),
topicData.slug = topic[3];
topicData.post_count = topic[4];
topicData.locked = topic[5];
topicData.pinned = topic[6];
topicData.deleted = topic[7];
user.getUserField(topic[1], 'username', function(username) {
topicData.username = username;
next(null);
})
});
},
function(next) {
if (uid && parseInt(uid) > 0) {
RDB.sismember('tid:' + tid + ':read_by_uid', uid, function(err, read) {
topicData.badgeclass = read ? '' : 'badge-important';
next(null);
});
} else next(null);
},
function(next) {
Topics.get_teaser(tid, function(teaser) {
topicData.teaser_text = teaser.text;
topicData.teaser_username = teaser.username;
next(null);
});
}
], function(err) {
if (!err) {
callback(topicData);
}
});
}
Topics.get_cid_by_tid = function(tid, callback) {
RDB.get('tid:' + pid + ':cid', function(err, cid) {
if (cid && parseInt(cid) > 0) callback(cid);
else callback(false);
});
}
Topics.markAsRead = function(tid, uid) {
RDB.sadd('tid:' + tid + ':read_by_uid', uid);
}
Topics.hasReadTopics = function(tids, uid, callback) {
var batch = RDB.multi();
for (var i=0, ii=tids.length; i<ii; i++) {
batch.sismember('tid:' + tids[i] + ':read_by_uid', uid);
}
batch.exec(function(err, hasRead) {
callback(hasRead);
});
}
Topics.get_teasers = function(tids, callback) {
var requests = [];
if (Array.isArray(tids)) {
for(x=0,numTids=tids.length;x<numTids;x++) {
(function(x) {
requests.push(function(next) {
Topics.get_teaser(tids[x], function(teaser_info) {
next(null, teaser_info);
});
});
})(x);
}
async.parallel(requests, function(err, teasers) {
callback(teasers);
});
} else callback([]);
}
Topics.get_teaser = function(tid, callback) {
RDB.lrange('tid:' + tid + ':posts', -1, -1, function(err, pid) {
if (pid !== null) {
RDB.mget([
'pid:' + pid + ':content',
'pid:' + pid + ':uid'
], function(err, content) {
user.getUserField(content[1], 'username', function(username) {
callback({
"text": utils.strip_tags(marked(content[0])),
"username": username
});
});
});
}
});
}
Topics.post = function(socket, uid, title, content, category_id) {
if (!category_id) throw new Error('Attempted to post without a category_id');
if (uid === 0) {
socket.emit('event:alert', {
title: 'Thank you for posting',
message: 'Since you are unregistered, your post is awaiting approval. Click here to register now.',
type: 'warning',
timeout: 7500,
clickfn: function() {
ajaxify.go('register');
}
});
return; // for now, until anon code is written.
}
RDB.incr('global:next_topic_id', function(err, tid) {
RDB.handle(err);
// Global Topics
if (uid == null) uid = 0;
if (uid !== null) {
RDB.sadd('topics:tid', tid);
} else {
// need to add some unique key sent by client so we can update this with the real uid later
RDB.lpush('topics:queued:tid', tid);
}
var slug = tid + '/' + utils.slugify(title);
// Topic Info
RDB.set('tid:' + tid + ':title', title);
RDB.set('tid:' + tid + ':uid', uid);
RDB.set('tid:' + tid + ':slug', slug);
RDB.set('tid:' + tid + ':timestamp', new Date().getTime());
RDB.set('topic:slug:' + slug + ':tid', tid);
// Posts
posts.create(uid, tid, content, function(pid) {
if (pid > 0) {
RDB.lpush('tid:' + tid + ':posts', pid);
// Notify any users looking at the category that a new post has arrived
Topics.get_topic(tid, uid, function(topicData) {
io.sockets.in('category_' + category_id).emit('event:new_topic', topicData);
});
}
});
Topics.markAsRead(tid, uid);
// User Details - move this out later
RDB.lpush('uid:' + uid + ':topics', tid);
socket.emit('event:alert', {
title: 'Thank you for posting',
message: 'You have successfully posted. Click here to view your post.',
type: 'notify',
timeout: 2000
});
// in future it may be possible to add topics to several categories, so leaving the door open here.
RDB.sadd('categories:' + category_id + ':tid', tid);
RDB.set('tid:' + tid + ':cid', category_id);
categories.get_category([category_id], function(data) {
RDB.set('tid:' + tid + ':category_name', data.categories[0].name);
RDB.set('tid:' + tid + ':category_slug', data.categories[0].slug);
});
});
};
Topics.lock = function(tid, uid, socket) {
user.getUserField(uid, 'reputation', function(rep) {
if (rep >= configs.privilege_thresholds.manage_thread) {
// Mark thread as locked
RDB.set('tid:' + tid + ':locked', 1);
if (socket) {
io.sockets.in('topic_' + tid).emit('event:topic_locked', {
tid: tid,
status: 'ok'
});
}
}
});
}
Topics.unlock = function(tid, uid, socket) {
user.getUserField(uid, 'reputation', function(rep) {
if (rep >= configs.privilege_thresholds.manage_thread) {
// Mark thread as locked
RDB.del('tid:' + tid + ':locked');
if (socket) {
io.sockets.in('topic_' + tid).emit('event:topic_unlocked', {
tid: tid,
status: 'ok'
});
}
}
});
}
Topics.delete = function(tid, uid, socket) {
user.getUserField(uid, 'reputation', function(rep) {
if (rep >= configs.privilege_thresholds.manage_thread) {
// Mark thread as deleted
RDB.set('tid:' + tid + ':deleted', 1);
Topics.lock(tid, uid);
if (socket) {
io.sockets.in('topic_' + tid).emit('event:topic_deleted', {
tid: tid,
status: 'ok'
});
}
}
});
}
Topics.restore = function(tid, uid, socket) {
user.getUserField(uid, 'reputation', function(rep) {
if (rep >= configs.privilege_thresholds.manage_thread) {
// Mark thread as deleted
RDB.del('tid:' + tid + ':deleted');
Topics.unlock(tid, uid);
if (socket) {
io.sockets.in('topic_' + tid).emit('event:topic_restored', {
tid: tid,
status: 'ok'
});
}
}
});
}
Topics.pin = function(tid, uid, socket) {
user.getUserField(uid, 'reputation', function(rep) {
if (rep >= configs.privilege_thresholds.manage_thread) {
// Mark thread as deleted
RDB.set('tid:' + tid + ':pinned', 1);
if (socket) {
io.sockets.in('topic_' + tid).emit('event:topic_pinned', {
tid: tid,
status: 'ok'
});
}
}
});
}
Topics.unpin = function(tid, uid, socket) {
user.getUserField(uid, 'reputation', function(rep) {
if (rep >= configs.privilege_thresholds.manage_thread) {
// Mark thread as deleted
RDB.del('tid:' + tid + ':pinned');
if (socket) {
io.sockets.in('topic_' + tid).emit('event:topic_unpinned', {
tid: tid,
status: 'ok'
});
}
}
});
}
Topics.move = function(tid, cid, socket) {
RDB.get('tid:' + tid + ':cid', function(err, oldCid) {
RDB.handle(err);
RDB.smove('categories:' + oldCid + ':tid', 'categories:' + cid + ':tid', tid, function(err, result) {
if (!err && result === 1) {
RDB.set('tid:' + tid + ':cid', cid);
categories.get_category([cid], function(data) {
RDB.set('tid:' + tid + ':category_name', data.categories[0].name);
RDB.set('tid:' + tid + ':category_slug', data.categories[0].slug);
});
socket.emit('api:topic.move', { status: 'ok' });
io.sockets.in('topic_' + tid).emit('event:topic_moved', { tid: tid });
} else {
socket.emit('api:topic.move', { status: 'error' });
}
});
});
}
}(exports));