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posts.get().unfactored().refactored().commited().pushed(); if (conflicts) throw new Error ('IGNORED'); yep.

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v1.18.x
psychobunny 12 years ago
parent 86af1b2af5
commit 4c524922cc
2 changed files with 115 additions and 133 deletions
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227
src/posts.js
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@ -5,152 +5,98 @@ var RDB = require('./redis.js'),
async = require('async');
(function(Posts) {
//data structure
//*global:next_post_id
// *pid:1:content
// *pid:1:uid
// *pid:1:timestamp
// ***pid:1:replies
// *uid:1:posts
Posts.get = function(callback, tid, current_user, start, end) {
if (start == null) start = 0;
if (end == null) end = start + 10;
async.parallel({
details: function(callback) {
RDB.mget([
'tid:' + tid + ':title',
'tid:' + tid + ':locked'
], function(results) {
callback(null, {
'topic_name': results[0],
'locked': results[1]
});
});
},
posts: function(callback) {
var participant_uids = [],
post_calls = [];
async.waterfall([
function(next) {
RDB.lrange('tid:' + tid + ':posts', start, end, function(pids) {
var content = [],
uids = [],
participants = [],
timestamp = [],
pid = [],
post_rep = [];
for (var i=0, ii=pids.length; i<ii; i++) {
content.push('pid:' + pids[i] + ':content');
uids.push('pid:' + pids[i] + ':uid');
timestamp.push('pid:' + pids[i] + ':timestamp');
post_rep.push('pid:' + pids[i] + ':rep');
pid.push(pids[i]);
}
var post_data, user_data, thread_data, vote_data;
if (pids.length > 0) {
RDB.multi()
.mget(content)
.mget(uids)
.mget(timestamp)
.mget(post_rep)
.exec(function(err, replies) {
// Populate uids array
for(var x=0,numReplies=replies[1].length;x<numReplies;x++) {
var uid = parseInt(replies[1][x]);
if (participants.indexOf(uid) === -1) participants.push(uid);
}
// Construct return object
next(null, {
replies: replies,
pids: pids,
participants: participants
});
}
);
}
});
}, function(returnObj, next) {
// Get user details
var details = {},
calls = [];
for(var x=0,numParticipants=returnObj.participants.length;x<numParticipants;x++) {
(function(uid) {
calls.push(function(next) {
// Get individual participant's details
user.getUserData(uid, function(userData) {
next(null, userData);
})
});
})(returnObj.participants[x]);
}
async.parallel(calls, function(err, results) {
for(var x=0,numResults=results.length;x<numResults;x++) {
details[returnObj.participants[x]] = results[x];
}
returnObj.participants = details;
next(null, returnObj);
});
}, function(returnObj, next) {
// Favourited?
var calls = [],
numPosts = returnObj.pids.length;
for(var x=0;x<numPosts;x++) {
(function(pid) {
calls.push(function(callback) {
Posts.hasFavourited(pid, current_user, function(hasFavourited) {
callback(null, hasFavourited);
});
});
})(returnObj.pids[x]);
}
async.parallel(calls, function(err, results) {
returnObj.favourites = results;
next(null, returnObj);
});
}
], function(err, returnObj) {
callback(null, returnObj);
});
}
}, function(err, results) {
// Construct posts array
var posts = [],
participant_details = results.posts.participants;
for(var x=0,numPosts=results.posts.pids.length;x<numPosts;x++) {
var uid = results.posts.replies[1][x],
participant = participant_details[uid];
//compile thread after all data is asynchronously called
function generateThread() {
if (!post_data ||! user_data || !thread_data || !vote_data) return;
var posts = [];
for (var i=0, ii= post_data.pid.length; i<ii; i++) {
var uid = post_data.uid[i],
pid = post_data.pid[i];
posts.push({
pid: results.posts.pids[x],
content: marked(results.posts.replies[0][x] || ''),
uid: uid,
timestamp: results.posts.replies[2][x],
relativeTime: utils.relativeTime(results.posts.replies[2][x]),
post_rep: results.posts.replies[3][x],
display_moderator_tools: results.posts.replies[1][x] === current_user ? 'show' : 'hide',
username: participant.username,
gravatar: participant.picture,
user_rep: participant.reputation,
fav_star_class: results.posts.favourites[x] ? 'icon-star' : 'icon-star-empty',
'pid' : pid,
'uid' : uid,
'content' : marked(post_data.content[i] || ''),
'post_rep' : post_data.reputation[i] || 0,
'timestamp' : post_data.timestamp[i],
'relativeTime': utils.relativeTime(post_data.timestamp[i]),
'username' : user_data[uid].username || 'anonymous',
'user_rep' : user_data[uid].reputation || 0,
'gravatar' : user_data[uid].picture,
'fav_star_class' : vote_data[pid] ? 'icon-star' : 'icon-star-empty',
'display_moderator_tools' : uid === current_user ? 'show' : 'hide'
});
}
// Construct return object
callback({
'topic_name': results.details.topic_name,
'locked': parseInt(results.details.locked) || 0,
'topic_name':thread_data.topic_name,
'locked': parseInt(thread_data.locked) || 0,
'topic_id': tid,
posts: posts,
uids: results.posts.participants
'posts': posts
});
}
// get all data for thread in asynchronous fashion
RDB.lrange('tid:' + tid + ':posts', start, end, function(pids) {
var content = [], uid = [], timestamp = [], pid = [], post_rep = [];
for (var i=0, ii=pids.length; i<ii; i++) {
content.push('pid:' + pids[i] + ':content');
uid.push('pid:' + pids[i] + ':uid');
timestamp.push('pid:' + pids[i] + ':timestamp');
post_rep.push('pid:' + pids[i] + ':rep');
pid.push(pids[i]);
}
RDB.get('tid:' + tid + ':title', function(topic_name) {
thread_data = {topic_name: topic_name};
generateThread();
});
Posts.getFavouritesByPostIDs(pids, current_user, function(fav_data) {
vote_data = fav_data;
generateThread();
});
RDB.multi()
.mget(content)
.mget(uid)
.mget(timestamp)
.mget(post_rep)
.get('tid:' + tid + ':title')
.get('tid:' + tid + ':locked')
.exec(function(err, replies) {
post_data = {
pid: pids,
content: replies[0],
uid: replies[1],
timestamp: replies[2],
reputation: replies[3]
};
thread_data = {
topic_name: replies[4],
locked: replies[5]
};
user.getMultipleUserFields(post_data.uid, ['username','reputation','picture'], function(user_details){
user_data = user_details;
generateThread();
});
});
});
}
@ -268,4 +214,19 @@ var RDB = require('./redis.js'),
callback(hasFavourited);
});
}
Posts.getFavouritesByPostIDs = function(pids, uid, callback) {
var loaded = 0;
var data = {};
for (var i=0, ii=pids.length; i<ii; i++) {
(function(post_id) {
Posts.hasFavourited(post_id, uid, function(hasFavourited){
data[post_id] = hasFavourited;
loaded ++;
if (loaded == pids.length) callback(data);
});
}(pids[i]))
}
}
}(exports));

21
src/user.js
Unescape Escape View File

@ -34,6 +34,27 @@ var config = require('../config.js'),
});
}
// a function I feel should be built in user not sure how baris is tackling this so oppa chicken wrapper here
User.getMultipleUserFields = function(uids, fields, callback) {
var uuids = uids.filter(function(value, index, self) {
return self.indexOf(value) === index;
});
var data = {},
loaded = 0;
for (var i=0, ii=uuids.length; i<ii; i++) {
(function(user_id) {
User.getUserFields(user_id, fields, function(user_data){
data[user_id] = user_data;
loaded ++;
if (loaded == uuids.length) callback(data);
});
}(uuids[i]))
}
}
User.getUserData = function(uid, callback) {
RDB.db.hgetall(String(uid), function(err, data){

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