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group.js
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group.js
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var request = require("request"),
xml2js = require("xml2js"),
cheerio = require("cheerio"),
_ = require("lodash");
module.exports = function(url)
{
var memberCache = {};
var modCache = null;
var officerCache = null;
var ownerCache = null;
var groupCount = 0;
var loadedMembers = false;
function getMembersPage(page, callback)
{
if(memberCache[page])
return callback(null, memberCache[page]);
return request(url + "/memberslistxml/?xml=1&p=" + page, function(err, res, body) {
if(err)
return callback(err, null);
if(res.statusCode != 200)
return callback("HTTP response code: " + res.statusCode, null);
xml2js.parseString(body, function(err, data) {
if(err)
return callback(err, null);
groupCount = parseInt(data.memberList.memberCount[0], 10);
memberCache[page] = data.memberList.members[0].steamID64;
callback(null, memberCache[page]);
});
});
}
function getMembers(limit, callback)
{
if(typeof limit == "function")
{
callback = limit;
limit = Infinity;
}
var page = 1;
var memberList = [];
function innerLoop(callback)
{
getMembersPage(page++, function(err, members) {
if(err)
return callback(err, null);
memberList = memberList.concat(members);
if(memberList.length >= limit || memberList.length >= groupCount)
return callback(null, memberList);
innerLoop(callback);
});
}
innerLoop(function(err, members) {
if(err)
return callback(err, null);
loadedMembers = true;
if(members.length > limit)
return callback(null, members.slice(0, limit));
return callback(null, members);
});
}
function getImportantPeople(callback)
{
if(ownerCache == null)
{
return getMembers(1000, function(err, members) {
if(err)
return callback(err);
return request(url + "/members", function(err, res, body) {
if(err) return callback(err);
if(res.statusCode != 200)
return callback("HTTP response code: " + res.statusCode);
var $ = cheerio.load(body);
var officerCount = $(".rank_icon[title='Group Officer']").length;
var modCount = $(".rank_icon[title='Group Moderator']").length;
ownerCache = members[0];
officerCache = _.slice(members, 1, officerCount + 1);
modCache = _.slice(members, officerCount + 1, officerCount + modCount + 1);
callback(null);
});
});
}
callback(null);
}
function getOwner(callback)
{
if(ownerCache == null)
return getImportantPeople(function(err) {
if(err) return callback(err);
callback(null, ownerCache);
});
callback(null, ownerCache);
}
function getOfficers(callback)
{
if(officerCache == null)
return getImportantPeople(function(err) {
if(err) return callback(err);
callback(null, officerCache);
});
callback(null, officerCache);
}
function getModerators(callback)
{
if(modCache == null)
return getImportantPeople(function(err) {
if(err) return callback(err);
callback(null, modCache);
});
callback(null, modCache);
}
function isMember(id, callback)
{
if(!loadedMembers)
return getMembers(function(err, members) {
if(err) return callback(err);
isMember(id, callback);
});
var keys = Object.keys(memberCache);
// check all keys to see if any of them contain the id
for(var i = 0; i < keys.length; i++)
{
if(memberCache[keys[i]].indexOf(id) != -1)
return callback(null, true);
}
return callback(null, false);
}
function getMemberType(id, callback)
{
if(!loadedMembers)
return getMembers(function(err, members) {
if(err) return callback(err);
getMemberType(id, callback);
});
if(id == ownerCache) return callback(null, "owner");
if(_.indexOf(officerCache, id) != -1) return callback(null, "officer");
if(_.indexOf(modCache, id) != -1) return callback(null, "moderator");
if(_.indexOf(memberCache, id) != -1) return callback(null, "member");
callback("User is not a member of this group.");
}
function clearCache()
{
memberCache = {};
modCache = null;
officerCache = null;
ownerCache = null;
loadedMembers = false;
}
return {
getMembers: getMembers,
getOwner: getOwner,
getModerators: getModerators,
getOfficers: getOfficers,
getMemberType: getMemberType,
isMember: isMember,
clearCache: clearCache
};
}