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server.js
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server.js
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var Channel, HOST, MESSAGE_BACKLOG, PORT, SESSION_TIMEOUT, channel, createSession, fu, kill_sessions, mem, qs, sessions, starttime, sys, url;
var __slice = Array.prototype.slice, __bind = function(func, obj, args) {
return function() {
return func.apply(obj || {}, args ? args.concat(__slice.call(arguments, 0)) : arguments);
};
};
HOST = null;
PORT = process.env.PORT || 8001;
MESSAGE_BACKLOG = 200;
SESSION_TIMEOUT = 60 * 1000;
starttime = new Date().getTime();
mem = process.memoryUsage();
setInterval(function() {
mem = process.memoryUsage();
return mem;
}, 10 * 1000);
fu = require("./fu");
sys = require("sys");
url = require("url");
qs = require("querystring");
sessions = {};
Channel = function() {};
Channel.prototype.messages = [];
Channel.prototype.callbacks = [];
Channel.prototype.appendMessage = function(nick, type, text) {
var _a, m;
m = {
nick: nick,
type: type,
text: text,
timestamp: new Date().getTime()
};
if (type === "msg") {
sys.puts("<" + nick + ">");
} else if (type === "join") {
sys.puts(nick + " join");
} else if (type === "part") {
sys.puts(nick + " part");
}
this.messages.push(m);
while (this.callbacks.length > 0) {
this.callbacks.shift().callback([m]);
}
_a = [];
while (this.messages.length > MESSAGE_BACKLOG) {
_a.push(this.messages.shift());
}
return _a;
};
Channel.prototype.query = function(since, callback) {
var _a, _b, _c, matching, message;
matching = [];
_b = this.messages;
for (_a = 0, _c = _b.length; _a < _c; _a++) {
message = _b[_a];
if (message.timestamp > since) {
matching.push(message);
}
}
matching.length !== 0 ? callback(matching) : this.callbacks.push({
timestamp: new Date(),
callback: callback
});
return setInterval(__bind(function() {
var _d, now;
now = new Date();
_d = [];
while (this.callbacks.length > 0 && now - this.callbacks[0].timestamp > 30 * 1000) {
_d.push(this.callbacks.shift().callback([]));
}
return _d;
}, this), 3000);
};
channel = new Channel();
createSession = function(nick) {
var _a, _b, _c, session;
if (nick.length > 50) {
return null;
}
if (/[^\w_\-^!]/.exec(nick)) {
return null;
}
_b = sessions;
for (_a = 0, _c = _b.length; _a < _c; _a++) {
session = _b[_a];
if (session.nick === nick) {
return null;
}
}
session = {
nick: nick,
id: Math.floor(Math.random() * 99999999999).toString(),
timestamp: new Date(),
poke: function() {
session.timestamp = new Date();
return session.timestamp;
},
destroy: function() {
channel.appendMessage(session.nick, "part");
return delete sessions[session.id];
}
};
sessions[session.id] = session;
return session;
};
kill_sessions = function() {
var _a, _b, _c, now, session;
now = new Date();
_b = sessions;
for (_a = 0, _c = _b.length; _a < _c; _a++) {
session = _b[_a];
if (!sessions.hasOwnProperty(id)) {
continue;
}
session = session[id];
now - session.timestamp > SESSION_TIMEOUT ? session.destroy() : null;
}
};
setInterval(kill_sessions, 1000);
fu.listen(PORT, HOST);
fu.get("/", fu.staticHandler("index.html"));
fu.get("/style.css", fu.staticHandler("style.css"));
fu.get("/client.js", fu.staticHandler("client.js"));
fu.get("/jquery-1.4.2.min.js", fu.staticHandler("jquery-1.4.2.min.js"));
fu.get('/who', function(req, res) {
var _a, _b, _c, nicks, session;
nicks = [];
_b = sessions;
for (_a = 0, _c = _b.length; _a < _c; _a++) {
session = _b[_a];
if (!sessions.hasOwnProperty(id)) {
continue;
}
nicks.push(session.nick);
}
return res.simpleJSON(200, {
nicks: nicks,
rss: mem.rss
});
});
fu.get('/join', function(req, res) {
var nick, session;
nick = qs.parse(url.parse(req.url).query).nick;
if (nick.length === 0) {
res.simpleJSON(400, {
error: "Bad nick."
});
return null;
}
session = createSession(nick);
if (session === null) {
res.simpleJSON(400, {
error: "Nick in use."
});
return null;
}
channel.appendMessage(session.nick, "join");
return res.simpleJSON(200, {
id: session.id,
nick: session.nick,
rss: mem.rss,
starttime: starttime
});
});
fu.get("/send", function(req, res) {
var id, session, text;
id = qs.parse(url.parse(req.url).query).id;
text = qs.parse(url.parse(req.url).query).text;
session = sessions[id];
if (!session || !text) {
res.simpleJSON(400, {
error: "No such session id"
});
return null;
}
session.poke();
channel.appendMessage(session.nick, "msg", text);
return res.simpleJSON(200, {
rss: mem.rss
});
});
fu.get("/part", function(req, res) {
var id, session;
id = qs.parse(url.parse(req.url).query).id;
if (id && sessions[id]) {
session = sessions[id];
session.destroy();
}
return res.simpleJSON(200, {
rss: mem.rss
});
});
fu.get("/recv", function(req, res) {
var id, session, since;
id = qs.parse(url.parse(req.url).query).id;
if (id && sessions[id]) {
session = sessions[id];
session.poke();
}
since = parseInt(qs.parse(url.parse(req.url).query).since, 10);
return channel.query(since, function(messages) {
session ? session.poke() : null;
return res.simpleJSON(200, {
messages: messages,
rss: mem.rss
});
});
});