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posts.get().unfactored().refactored().commited().pushed(); if (conflicts) throw new Error ('IGNORED'); yep.
This commit is contained in:
psychobunny
239
src/posts.js
239
src/posts.js
@@ -5,152 +5,98 @@ var RDB = require('./redis.js'),
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async = require('async');
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(function(Posts) {
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//data structure
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//*global:next_post_id
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// *pid:1:content
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// *pid:1:uid
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// *pid:1:timestamp
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// ***pid:1:replies
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// *uid:1:posts
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Posts.get = function(callback, tid, current_user, start, end) {
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if (start == null) start = 0;
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if (end == null) end = start + 10;
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async.parallel({
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details: function(callback) {
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RDB.mget([
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'tid:' + tid + ':title',
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'tid:' + tid + ':locked'
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], function(results) {
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callback(null, {
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'topic_name': results[0],
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'locked': results[1]
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var post_data, user_data, thread_data, vote_data;
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//compile thread after all data is asynchronously called
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function generateThread() {
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if (!post_data ||! user_data || !thread_data || !vote_data) return;
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var posts = [];
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for (var i=0, ii= post_data.pid.length; i<ii; i++) {
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var uid = post_data.uid[i],
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pid = post_data.pid[i];
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posts.push({
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'pid' : pid,
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'uid' : uid,
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'content' : marked(post_data.content[i] || ''),
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'post_rep' : post_data.reputation[i] || 0,
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'timestamp' : post_data.timestamp[i],
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'relativeTime': utils.relativeTime(post_data.timestamp[i]),
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'username' : user_data[uid].username || 'anonymous',
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'user_rep' : user_data[uid].reputation || 0,
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'gravatar' : user_data[uid].picture,
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'fav_star_class' : vote_data[pid] ? 'icon-star' : 'icon-star-empty',
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'display_moderator_tools' : uid === current_user ? 'show' : 'hide'
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});
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}
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callback({
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'topic_name':thread_data.topic_name,
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'locked': parseInt(thread_data.locked) || 0,
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'topic_id': tid,
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'posts': posts
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});
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}
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// get all data for thread in asynchronous fashion
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RDB.lrange('tid:' + tid + ':posts', start, end, function(pids) {
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var content = [], uid = [], timestamp = [], pid = [], post_rep = [];
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for (var i=0, ii=pids.length; i<ii; i++) {
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content.push('pid:' + pids[i] + ':content');
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uid.push('pid:' + pids[i] + ':uid');
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timestamp.push('pid:' + pids[i] + ':timestamp');
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post_rep.push('pid:' + pids[i] + ':rep');
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pid.push(pids[i]);
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}
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RDB.get('tid:' + tid + ':title', function(topic_name) {
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thread_data = {topic_name: topic_name};
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generateThread();
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});
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Posts.getFavouritesByPostIDs(pids, current_user, function(fav_data) {
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vote_data = fav_data;
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generateThread();
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});
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RDB.multi()
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.mget(content)
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.mget(uid)
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.mget(timestamp)
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.mget(post_rep)
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.get('tid:' + tid + ':title')
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.get('tid:' + tid + ':locked')
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.exec(function(err, replies) {
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post_data = {
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pid: pids,
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content: replies[0],
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uid: replies[1],
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timestamp: replies[2],
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reputation: replies[3]
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};
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thread_data = {
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topic_name: replies[4],
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locked: replies[5]
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};
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user.getMultipleUserFields(post_data.uid, ['username','reputation','picture'], function(user_details){
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user_data = user_details;
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generateThread();
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});
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});
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},
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posts: function(callback) {
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var participant_uids = [],
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post_calls = [];
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async.waterfall([
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function(next) {
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RDB.lrange('tid:' + tid + ':posts', start, end, function(pids) {
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var content = [],
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uids = [],
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participants = [],
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timestamp = [],
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pid = [],
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post_rep = [];
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for (var i=0, ii=pids.length; i<ii; i++) {
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content.push('pid:' + pids[i] + ':content');
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uids.push('pid:' + pids[i] + ':uid');
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timestamp.push('pid:' + pids[i] + ':timestamp');
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post_rep.push('pid:' + pids[i] + ':rep');
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pid.push(pids[i]);
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}
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if (pids.length > 0) {
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RDB.multi()
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.mget(content)
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.mget(uids)
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.mget(timestamp)
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.mget(post_rep)
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.exec(function(err, replies) {
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// Populate uids array
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for(var x=0,numReplies=replies[1].length;x<numReplies;x++) {
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var uid = parseInt(replies[1][x]);
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if (participants.indexOf(uid) === -1) participants.push(uid);
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}
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// Construct return object
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next(null, {
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replies: replies,
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pids: pids,
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participants: participants
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});
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}
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);
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}
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});
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}, function(returnObj, next) {
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// Get user details
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var details = {},
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calls = [];
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for(var x=0,numParticipants=returnObj.participants.length;x<numParticipants;x++) {
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(function(uid) {
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calls.push(function(next) {
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// Get individual participant's details
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user.getUserData(uid, function(userData) {
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next(null, userData);
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})
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});
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})(returnObj.participants[x]);
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}
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async.parallel(calls, function(err, results) {
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for(var x=0,numResults=results.length;x<numResults;x++) {
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details[returnObj.participants[x]] = results[x];
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}
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returnObj.participants = details;
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next(null, returnObj);
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});
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}, function(returnObj, next) {
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// Favourited?
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var calls = [],
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numPosts = returnObj.pids.length;
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for(var x=0;x<numPosts;x++) {
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(function(pid) {
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calls.push(function(callback) {
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Posts.hasFavourited(pid, current_user, function(hasFavourited) {
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callback(null, hasFavourited);
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});
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});
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})(returnObj.pids[x]);
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}
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async.parallel(calls, function(err, results) {
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returnObj.favourites = results;
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next(null, returnObj);
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});
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}
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], function(err, returnObj) {
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callback(null, returnObj);
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});
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}
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}, function(err, results) {
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// Construct posts array
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var posts = [],
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participant_details = results.posts.participants;
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for(var x=0,numPosts=results.posts.pids.length;x<numPosts;x++) {
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var uid = results.posts.replies[1][x],
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participant = participant_details[uid];
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posts.push({
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pid: results.posts.pids[x],
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content: marked(results.posts.replies[0][x] || ''),
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uid: uid,
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timestamp: results.posts.replies[2][x],
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relativeTime: utils.relativeTime(results.posts.replies[2][x]),
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post_rep: results.posts.replies[3][x],
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display_moderator_tools: results.posts.replies[1][x] === current_user ? 'show' : 'hide',
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username: participant.username,
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gravatar: participant.picture,
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user_rep: participant.reputation,
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fav_star_class: results.posts.favourites[x] ? 'icon-star' : 'icon-star-empty',
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});
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}
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// Construct return object
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callback({
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'topic_name': results.details.topic_name,
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'locked': parseInt(results.details.locked) || 0,
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'topic_id': tid,
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posts: posts,
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uids: results.posts.participants
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});
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});
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}
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@@ -268,4 +214,19 @@ var RDB = require('./redis.js'),
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callback(hasFavourited);
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});
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}
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Posts.getFavouritesByPostIDs = function(pids, uid, callback) {
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var loaded = 0;
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var data = {};
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for (var i=0, ii=pids.length; i<ii; i++) {
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(function(post_id) {
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Posts.hasFavourited(post_id, uid, function(hasFavourited){
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data[post_id] = hasFavourited;
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loaded ++;
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if (loaded == pids.length) callback(data);
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});
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}(pids[i]))
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}
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}
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}(exports));
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21
src/user.js
21
src/user.js
@@ -34,6 +34,27 @@ var config = require('../config.js'),
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});
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}
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// a function I feel should be built in user not sure how baris is tackling this so oppa chicken wrapper here
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User.getMultipleUserFields = function(uids, fields, callback) {
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var uuids = uids.filter(function(value, index, self) {
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return self.indexOf(value) === index;
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});
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var data = {},
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loaded = 0;
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for (var i=0, ii=uuids.length; i<ii; i++) {
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(function(user_id) {
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User.getUserFields(user_id, fields, function(user_data){
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data[user_id] = user_data;
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loaded ++;
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if (loaded == uuids.length) callback(data);
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});
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}(uuids[i]))
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}
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}
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User.getUserData = function(uid, callback) {
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RDB.db.hgetall(String(uid), function(err, data){
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