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nodebb/src/posts.js

629 lines
16 KiB
JavaScript

'use strict';
var async = require('async'),
path = require('path'),
fs = require('fs'),
nconf = require('nconf'),
_ = require('underscore'),
validator = require('validator'),
winston = require('winston'),
gravatar = require('gravatar'),
S = require('string'),
db = require('./database'),
utils = require('../public/src/utils'),
user = require('./user'),
groups = require('./groups'),
topics = require('./topics'),
favourites = require('./favourites'),
postTools = require('./postTools'),
privileges = require('./privileges'),
categories = require('./categories'),
plugins = require('./plugins'),
meta = require('./meta'),
emitter = require('./emitter'),
websockets = require('./socket.io');
(function(Posts) {
require('./posts/recent')(Posts);
require('./posts/delete')(Posts);
Posts.create = function(data, callback) {
var uid = data.uid,
tid = data.tid,
content = data.content,
timestamp = data.timestamp || Date.now();
if (uid === null) {
return callback(new Error('[[error:invalid-uid]]'));
}
var postData;
async.waterfall([
function(next) {
db.incrObjectField('global', 'nextPid', next);
},
function(pid, next) {
postData = {
'pid': pid,
'uid': uid,
'tid': tid,
'content': content,
'timestamp': timestamp,
'reputation': 0,
'votes': 0,
'editor': '',
'edited': 0,
'deleted': 0
};
if (data.toPid) {
postData.toPid = data.toPid;
}
plugins.fireHook('filter:post.save', postData, next);
},
function(postData, next) {
db.setObject('post:' + postData.pid, postData, next);
},
function(next) {
async.parallel([
function(next) {
user.onNewPostMade(postData, next);
},
function(next) {
topics.onNewPostMade(postData, next);
},
function(next) {
categories.onNewPostMade(postData, next);
},
function(next) {
db.sortedSetAdd('posts:pid', timestamp, postData.pid, next);
},
function(next) {
db.incrObjectField('global', 'postCount', next);
}
], function(err) {
if (err) {
return next(err);
}
plugins.fireHook('filter:post.get', postData, next);
});
},
function(postData, next) {
postTools.parse(postData.content, function(err, content) {
if (err) {
return next(err);
}
plugins.fireHook('action:post.save', postData);
postData.content = content;
next(null, postData);
});
}
], callback);
};
Posts.getPostsByTid = function(tid, set, start, end, uid, reverse, callback) {
Posts.getPidsFromSet(set, start, end, reverse, function(err, pids) {
if(err) {
return callback(err);
}
if(!Array.isArray(pids) || !pids.length) {
return callback(null, []);
}
Posts.getPostsByPids(pids, uid, callback);
});
};
Posts.getPidsFromSet = function(set, start, end, reverse, callback) {
if (isNaN(start) || isNaN(end)) {
return callback(null, []);
}
db[reverse ? 'getSortedSetRevRange' : 'getSortedSetRange'](set, start, end, callback);
};
Posts.getPostsByPids = function(pids, uid, callback) {
var keys = [];
for(var x=0, numPids=pids.length; x<numPids; ++x) {
keys.push('post:' + pids[x]);
}
db.getObjects(keys, function(err, data) {
if(err) {
return callback(err);
}
async.map(data, function(postData, next) {
if(!postData) {
return next(null);
}
postData.relativeTime = utils.toISOString(postData.timestamp);
postData.relativeEditTime = parseInt(postData.edited, 10) !== 0 ? utils.toISOString(postData.edited) : '';
postTools.parse(postData.content, function(err, content) {
if(err) {
return next(err);
}
postData.content = content;
next(null, postData);
});
}, function(err, posts) {
if (err) {
return callback(err);
}
plugins.fireHook('filter:post.getPosts', {posts: posts, uid: uid}, function(err, data) {
if (err) {
return callback(err);
}
if (!data || !Array.isArray(data.posts)) {
return callback(null, []);
}
data.posts = data.posts.filter(Boolean);
callback(null, data.posts);
});
});
});
};
Posts.getUserInfoForPosts = function(uids, callback) {
async.parallel({
groups: function(next) {
groups.getUserGroups(uids, next);
},
userData: function(next) {
user.getMultipleUserFields(uids, ['uid', 'username', 'userslug', 'reputation', 'postcount', 'picture', 'signature', 'banned', 'status'], next);
},
online: function(next) {
websockets.isUsersOnline(uids, next);
}
}, function(err, results) {
if (err) {
return callback(err);
}
var userData = results.userData;
for(var i=0; i<userData.length; ++i) {
userData[i].groups = results.groups[i];
userData[i].status = !results.online[i] ? 'offline' : userData[i].status;
}
async.map(userData, function(userData, next) {
userData.uid = userData.uid || 0;
userData.username = userData.username || '[[global:guest]]';
userData.userslug = userData.userslug || '';
userData.reputation = userData.reputation || 0;
userData.postcount = userData.postcount || 0;
userData.banned = parseInt(userData.banned, 10) === 1;
userData.picture = userData.picture || user.createGravatarURLFromEmail('');
async.parallel({
signature: function(next) {
if (parseInt(meta.config.disableSignatures, 10) === 1) {
return next();
}
postTools.parseSignature(userData.signature, next);
},
customProfileInfo: function(next) {
plugins.fireHook('filter:posts.custom_profile_info', {profile: [], uid: userData.uid}, next);
}
}, function(err, results) {
if (err) {
return next(err);
}
userData.signature = results.signature;
userData.custom_profile_info = results.customProfileInfo.profile;
plugins.fireHook('filter:posts.modifyUserInfo', userData, next);
});
}, callback);
});
};
Posts.getPostSummaryByPids = function(pids, uid, options, callback) {
options.stripTags = options.hasOwnProperty('stripTags') ? options.stripTags : false;
options.parse = options.hasOwnProperty('parse') ? options.parse : true;
if (!Array.isArray(pids) || !pids.length) {
return callback(null, []);
}
var keys = pids.map(function(pid) {
return 'post:' + pid;
});
db.getObjectsFields(keys, ['pid', 'tid', 'content', 'uid', 'timestamp', 'deleted'], function(err, posts) {
if (err) {
return callback(err);
}
posts = posts.filter(function(p) {
return !!p && parseInt(p.deleted, 10) !== 1;
});
var uids = [], tids = [];
for(var i=0; i<posts.length; ++i) {
if (uids.indexOf(posts[i].uid) === -1) {
uids.push(posts[i].uid);
}
if (tids.indexOf('topic:' + posts[i].tid) === -1) {
tids.push('topic:' + posts[i].tid);
}
}
async.parallel({
users: function(next) {
user.getMultipleUserFields(uids, ['uid', 'username', 'userslug', 'picture'], next);
},
topicsAndCategories: function(next) {
db.getObjectsFields(tids, ['uid', 'tid', 'title', 'cid', 'slug', 'deleted'], function(err, topics) {
if (err) {
return next(err);
}
var cidKeys = topics.map(function(topic) {
return 'category:' + topic.cid;
}).filter(function(value, index, array) {
return array.indexOf(value) === index;
});
db.getObjectsFields(cidKeys, ['cid', 'name', 'icon', 'slug'], function(err, categories) {
next(err, {topics: topics, categories: categories});
});
});
},
indices: function(next) {
Posts.getPostIndices(posts, uid, next);
}
}, function(err, results) {
function toObject(key, data) {
var obj = {};
for(var i=0; i<data.length; ++i) {
obj[data[i][key]] = data[i];
}
return obj;
}
function stripTags(content) {
if (options.stripTags && content) {
var s = S(content);
return s.stripTags.apply(s, utils.stripTags).s;
}
return content;
}
if (err) {
return callback(err);
}
results.users = toObject('uid', results.users);
results.topics = toObject('tid', results.topicsAndCategories.topics);
results.categories = toObject('cid', results.topicsAndCategories.categories);
for (var i=0; i<posts.length; ++i) {
posts[i].index = utils.isNumber(results.indices[i]) ? parseInt(results.indices[i], 10) + 1 : 1;
}
posts = posts.filter(function(post) {
return results.topics[post.tid] && parseInt(results.topics[post.tid].deleted, 10) !== 1;
});
async.map(posts, function(post, next) {
post.user = results.users[post.uid];
post.topic = results.topics[post.tid];
post.category = results.categories[post.topic.cid];
post.topic.title = validator.escape(post.topic.title);
post.relativeTime = utils.toISOString(post.timestamp);
if (!post.content || !options.parse) {
post.content = stripTags(post.content);
return next(null, post);
}
postTools.parse(post.content, function(err, content) {
if (err) {
return next(err);
}
post.content = stripTags(content);
next(null, post);
});
}, function(err, posts) {
plugins.fireHook('filter:post.getPostSummaryByPids', {posts: posts, uid: uid}, function(err, postData) {
callback(err, postData.posts);
});
});
});
});
};
Posts.getPostData = function(pid, callback) {
db.getObject('post:' + pid, function(err, data) {
if(err) {
return callback(err);
}
plugins.fireHook('filter:post.get', data, callback);
});
};
Posts.getPostFields = function(pid, fields, callback) {
db.getObjectFields('post:' + pid, fields, function(err, data) {
if(err) {
return callback(err);
}
// TODO: I think the plugins system needs an optional 'parameters' paramter so I don't have to do this:
data = data || {};
data.pid = pid;
data.fields = fields;
plugins.fireHook('filter:post.getFields', data, callback);
});
};
Posts.getPostsFields = function(pids, fields, callback) {
var keys = pids.map(function(pid) {
return 'post:' + pid;
});
db.getObjectsFields(keys, fields, callback);
};
Posts.getPostField = function(pid, field, callback) {
Posts.getPostFields(pid, [field], function(err, data) {
if(err) {
return callback(err);
}
callback(null, data[field]);
});
};
Posts.setPostField = function(pid, field, value, callback) {
db.setObjectField('post:' + pid, field, value, callback);
plugins.fireHook('action:post.setField', {
'pid': pid,
'field': field,
'value': value
});
};
Posts.setPostFields = function(pid, data, callback) {
db.setObject('post:' + pid, data, callback);
};
Posts.getCidByPid = function(pid, callback) {
Posts.getPostField(pid, 'tid', function(err, tid) {
if(err) {
return callback(err);
}
topics.getTopicField(tid, 'cid', function(err, cid) {
if(err || !cid) {
return callback(err || new Error('[[error:invalid-cid]]'));
}
callback(null, cid);
});
});
};
Posts.getCidsByPids = function(pids, callback) {
Posts.getPostsFields(pids, ['tid'], function(err, posts) {
if (err) {
return callback(err);
}
var tids = posts.map(function(post) {
return post.tid;
}).filter(function(tid, index, array) {
return tid && array.indexOf(tid) === index;
});
topics.getTopicsFields(tids, ['cid'], function(err, topics) {
if (err) {
return callback(err);
}
var map = {};
topics.forEach(function(topic, index) {
if (topic) {
map[tids[index]] = topic.cid;
}
});
var cids = posts.map(function(post) {
return map[post.tid];
});
callback(null, cids);
});
});
};
Posts.getPostsByUid = function(callerUid, uid, start, end, callback) {
user.getPostIds(uid, start, end, function(err, pids) {
if (err) {
return callback(err);
}
privileges.posts.filter('read', pids, callerUid, function(err, pids) {
if (err) {
return callback(err);
}
getPostsFromSet('uid:' + uid + ':posts', pids, callerUid, callback);
});
});
};
Posts.getFavourites = function(uid, start, end, callback) {
db.getSortedSetRevRange('uid:' + uid + ':favourites', start, end, function(err, pids) {
if (err) {
return callback(err);
}
getPostsFromSet('uid:' + uid + ':favourites', pids, uid, callback);
});
};
function getPostsFromSet(set, pids, uid, callback) {
if (!Array.isArray(pids) || !pids.length) {
return callback(null, {posts: [], nextStart: 0});
}
Posts.getPostSummaryByPids(pids, uid, {stripTags: false}, function(err, posts) {
if (err) {
return callback(err);
}
if (!Array.isArray(posts) || !posts.length) {
return callback(null, {posts: [], nextStart: 0});
}
db.sortedSetRevRank(set, posts[posts.length - 1].pid, function(err, rank) {
if(err) {
return callback(err);
}
var data = {
posts: posts,
nextStart: parseInt(rank, 10) + 1
};
callback(null, data);
});
});
}
Posts.getPidIndex = function(pid, uid, callback) {
async.parallel({
settings: function(next) {
user.getSettings(uid, next);
},
tid: function(next) {
Posts.getPostField(pid, 'tid', next);
}
}, function(err, results) {
if(err) {
return callback(err);
}
var set = results.settings.topicPostSort === 'most_votes' ? 'tid:' + results.tid + ':posts:votes' : 'tid:' + results.tid + ':posts';
db.sortedSetRank(set, pid, function(err, index) {
if (!utils.isNumber(index)) {
return callback(err, 1);
}
callback(err, parseInt(index, 10) + 2);
});
});
};
Posts.getPostIndices = function(posts, uid, callback) {
if (!Array.isArray(posts) || !posts.length) {
return callback(null, []);
}
user.getSettings(uid, function(err, settings) {
if (err) {
return callback(err);
}
var byVotes = settings.topicPostSort === 'most_votes';
var sets = posts.map(function(post) {
return byVotes ? 'tid:' + post.tid + ':posts:votes' : 'tid:' + post.tid + ':posts';
});
var uniqueSets = _.uniq(sets);
var method = 'sortedSetsRanks';
if (uniqueSets.length === 1) {
method = 'sortedSetRanks';
sets = uniqueSets[0];
}
var pids = posts.map(function(post) {
return post.pid;
});
db[method](sets, pids, function(err, indices) {
if (err) {
return callback(err);
}
for (var i=0; i<indices.length; ++i) {
indices[i] = utils.isNumber(indices[i]) ? parseInt(indices[i], 10) + 1 : 0;
}
callback(null, indices);
});
});
};
Posts.isOwner = function(pid, uid, callback) {
uid = parseInt(uid, 10);
if (Array.isArray(pid)) {
Posts.getPostsFields(pid, ['uid'], function(err, posts) {
if (err) {
return callback(err);
}
posts = posts.map(function(post) {
return post && parseInt(post.uid, 10) === uid;
});
callback(null, posts);
});
} else {
Posts.getPostField(pid, 'uid', function(err, author) {
callback(err, parseInt(author, 10) === uid);
});
}
};
Posts.isMain = function(pid, callback) {
Posts.getPostField(pid, 'tid', function(err, tid) {
if (err) {
return callback(err);
}
topics.getTopicField(tid, 'mainPid', function(err, mainPid) {
callback(err, parseInt(pid, 10) === parseInt(mainPid, 10));
});
});
};
Posts.updatePostVoteCount = function(pid, voteCount, callback) {
async.parallel([
function(next) {
Posts.getPostField(pid, 'tid', function(err, tid) {
if (err) {
return next(err);
}
topics.getTopicField(tid, 'mainPid', function(err, mainPid) {
if (err) {
return next(err);
}
if (parseInt(mainPid, 10) === parseInt(pid, 10)) {
return next();
}
db.sortedSetAdd('tid:' + tid + ':posts:votes', voteCount, pid, next);
});
});
},
function(next) {
Posts.setPostField(pid, 'votes', voteCount, next);
}
], callback);
};
}(exports));