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server.js
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server.js
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var express = require("express");
var app = express();
var http = require("http").Server(app);
var io = require("socket.io")(http);
var port = process.env.PORT || 3000;
var moment = require("moment");
app.get("/room/:room", function(req, res){
res.sendFile(__dirname + "/public/");
});
app.use(express.static(__dirname + "/public"));
var socketData = {
roomname: {
users: [],
timerOn: false,
time: 0,
timeout: {},
limit: 0,
resume: false,
tasks: [],
selectedTask: {}
}
};
function removeUser(username, roomname, id, cb){
if(socketData[roomname]){
var userList = socketData[roomname].users, found;
for(var i = 0; i < userList.length;i++){
if(userList[i].name === username){
found = true;
break;
}
}
if(found){
var user = userList[i].name;
userList.splice(i,1);
cb && cb("User "+ user +" successfully cleaned from data");
} else {
cb && cb("WARNING: username not found");
}
} else {
cb && cb("WARNING: room not found");
}
}
function startTimer(data, tick, end){
var roomname = data.room;
var roomData = socketData[roomname];
if(roomData){
//if timer is already on pause it
if(roomData.timerOn){
data.timerOn = false;
pauseTimer(data, false);
} else{
resetAllUsers(data);
roomData.timerOn = true;
roomData.time = roomData.time || data.limit || 30;
timer(data, tick, end);
}
} else {
printMessage("room not found could not start timer");
}
}
function pauseTimer(data, reset){
var roomData = socketData[data.room];
if(roomData){
roomData.timerOn = false;
if(reset){
printMessage("pause got here in the timer ", roomData.limit);
// if reset isn't listed then set time to limit or 29
roomData.time = (roomData.limit) ? roomData.limit - 1 : 29;
}
printMessage("rooom timer paused", roomData.timerOn, "time: ", roomData.time);
io.to(data.room).emit("updateTimer", {
time: roomData.time + 1,
timerOn: false,
inProgress: !reset
});
clearTimeout(roomData.timeout);
} else {
printMessage("room not found could not pause the timer");
}
}
function timer(data, tick, end){
var roomData = socketData[data.room];
if(roomData){
var time = roomData.time;
var on = roomData.timerOn;
//send out updated time
tick({
time:time,
room: data.room,
timerOn: on,
inProgress: true
});
// keep looping through timer if on
if(time > -1 && on){
roomData.time--;
roomData.timeout = setTimeout(function(){
timer(data, tick, end);
}, 1000);
}
if(time === 0 && on){
//reset timer
roomData.timerOn = false;
roomData.time = 30;
roomData.resume = null;
roomData.inProgress = false;
io.to(data.room).emit("updateTimer", {
time: 0,
timerOn: false,
inProgress: false
});
var notPicked = roomData.users.filter(function(item){
if(!item.pick){
return item.name;
}
});
printMessage(notPicked, "these users havent picked");
var usersNp = notPicked.reduce(function(prev, curr, index){
var comma = (index == 0 || index == this.length ) ? "" : ", ";
return prev + comma + curr.name;
}.bind(this),"");
io.to(data.room).emit("notification",
{ message: "these users haven't picked: " + usersNp });
}
} else {
printMessage("room not found timer cannot continue");
}
}
function updateUserClick(data){
var roomData = socketData[data.room];
if(roomData){
var userList = roomData.users;
//todo: build helper method
var fibNumbers = [1,2,3,5,8,13,21,34,55,89];
userList.forEach(function(user){
if(user.name === data.name){
user.pick = fibNumbers[data.index];
}
return user;
});
if(picksLeft(data).length===0){
pauseTimer(data, true);
var score = tallyScores(data);
var selectedTask = roomData.selectedTask;
roomData.tasks[selectedTask.index].score = score;
selectedTask.score = score;
io.to(data.room).emit("doneVoting",{
userList: socketData[data.room].users,
score: score,
tasks: roomData.tasks,
selectedTask: roomData.selectedTask
});
}
} else {
printMessage("Warning: could not find room card pick not updated");
}
}
function tallyScores(data){
var roomData = socketData[data.room];
if(roomData){
var userList = roomData.users;
var rawScores = userList.map(function(user){
if(user.pick > -1){
return user.pick;
} else {
printMessage("error: user pick fail, missing user.pick ");
}
});
var totals = rawScores.reduce(function(curr, prev){
return curr + prev;
});
var numOfUsers = rawScores.length;
//throw out highest and lowest score if more than 4 users
if(numOfUsers > 4){
var highest = Math.max.apply(null, rawScores);
var lowest = Math.min.apply(null, rawScores);
totals = totals - highest - lowest;
numOfUsers -= 2;
}
var fibNumbers = [1,2,3,5,8,13,21,34,55,89];
var average = Math.floor(totals/numOfUsers);
for (var i = 0; i < fibNumbers.length; i++) {
if(fibNumbers[i] >= average){
return fibNumbers[i];
}
}
} else {
printMessage("something went wrogn in tallying scores");
}
}
function picksLeft(data){
var roomData = socketData[data.room];
if(roomData){
return roomData.users.filter(function(item){
if(!item.pick){
return item.name;
}
});
} else {
printMessage("Warning: something went wrong with checking picks");
return [];
}
}
function resetAllUsers(data){
var roomData = socketData[data.room];
if(roomData && roomData.users){
roomData.users.forEach(function(user){
user.pick = null;
});
//make sure task data is reset here and sent back to rooms
io.to(data.room).emit("beginVoting", {
task: roomData.selectedTask.description,
tasks: roomData.tasks,
selectedTask: roomData.selectedTask
});
} else {
printMessage("could not find room to reset users");
}
}
io.on("connection", function(socket){
printMessage("a user connected");
// handle a user joining
socket.on("joinroom", function(data){
var roomname = data.room, username = data.name,
userInfo = { name: username, pick:null, num: Math.ceil(Math.random()*25) };
// if room doesn't already exist init room data
if(!socketData[roomname]){
socketData[roomname] = {
users: [],
timerOn: false,
time: 0,
timeout: {},
limit: 30,
resume: false,
tasks: [],
selectedTask: { index: -1}
};
}
// add user to room and keep track of user data
socket.join(roomname);
socketData[roomname].users.push(userInfo);
io.to(roomname).emit("addUser",{userList: socketData[roomname].users });
// update task list only for newly joining user
io.to(socket.id).emit("addTask", {tasks: socketData[roomname].tasks, selectedTask: {}});
//todo: handle joining multiple rooms
if(socketData[socket.id]){
printMessage("multiple rooms is not supported");
io.to(roomname).emit("message", {
msg: "Note: joining multiple rooms is not supported",
time: moment().format("h:mm a")
});
}
// store room info by socketid to id who leaves
socketData[socket.id] = [roomname, username];
// notify room that user has joined
io.to(roomname).emit("message", {
msg: username + " joined the room",
time: moment().format("h:mm a")
});
});
socket.on("addTask", function(data){
var roomname = data.room;
var tasks = socketData[roomname].tasks;
// assign new index to task
data.task.index = tasks.length;
tasks.push(data.task);
io.to(roomname).emit("addTask",{
tasks: tasks
});
});
socket.on("nextTask", function(data){
var room = socketData[data.room];
var tasks = room.tasks;
var oldIndex = room.selectedTask.index;
var nextIndex = oldIndex+1;
if( tasks[oldIndex] && nextIndex < tasks.length){
tasks[oldIndex].selected = null;
tasks[nextIndex].selected = true;
room.selectedTask = tasks[nextIndex];
io.to(data.room).emit("nextTask",{
tasks: tasks,
selectedTask: tasks[nextIndex]
});
}
});
socket.on("selectTask", function(data){
var room = socketData[data.room];
var tasks = room.tasks;
var newIndex = data.task.index;
tasks.forEach(function(task, index){
if(index === newIndex){
task.selected = true;
return task;
} else {
task.selected = null;
return task;
}
});
room.selectedTask = data.task;
io.to(data.room).emit("selectTask", {
tasks: tasks,
selectedTask: data.task
});
});
socket.on("prevTask", function(data){
var room = socketData[data.room];
var tasks = room.tasks;
var oldIndex = room.selectedTask.index;
var prevIndex = oldIndex-1;
if(prevIndex > -1){
tasks[oldIndex].selected = null;
tasks[prevIndex].selected = true;
room.selectedTask = tasks[prevIndex];
io.to(data.room).emit("prevTask",{
tasks: tasks,
selectedTask: tasks[prevIndex]
});
}
});
// handle a user leaving
socket.on("disconnect", function(){
printMessage("a user disconnected");
var data = socketData[socket.id];
//see if they joined a room
if(data && data.length === 2){
var roomname = data[0];
var username = data[1];
// tell room that user left
io.to(roomname).emit("message",{
msg: username + " left the room",
time: moment().format("h:mm a")
});
io.to(roomname).emit("removeUser", username);
// remove user from data
removeUser(username, roomname, socket.id, function(message){
printMessage(message);
});
}
});
//picking a roomname from home
socket.on("roomname", function(room){
if(!io.sockets.adapter.rooms[room]){
io.emit("room-available", room);
socket.join(room);
printMessage(io.sockets.adapter.rooms[room]);
} else {
io.emit("room-not-available");
}
});
//starting the room timer
socket.on("startTimer", function(data){
startTimer(data, function onTick(data){
io.to(data.room).emit("updateTimer", data);
},
function onEnd(data){
io.to(data.room).emit("addUser",{
userList: socketData[data.room].users
});
});
});
socket.on("clickedCard", function(data){
updateUserClick(data);
});
socket.on("message", function(data){
io.to(data.room).emit("message",{
name: data.name,
msg: data.msg,
time: moment().format("h:mm a")
});
});
});
function printMessage(){
console.log.apply(null, arguments);
}
http.listen(port, function(){
printMessage("Yalabazooo listening on port "+ port);
});