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index.js
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index.js
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const express = require('express');
const http = require('http');
const bodyParser = require('body-parser');
const app = express();
const router = require('./router');
const cors = require('cors');
const mongoose = require('mongoose');
const Poll = require('./models/poll');
//DB setup
//mongoose.connect('mongodb://localhost/new-vote');
mongoose.connect('mongodb://kkindorf:Zooniebin9765@ds259089.mlab.com:59089/voters')
//app setup
app.use(cors());
//type: */* tells bodyParser that it will parse any body request using json
app.use(bodyParser.json({type: '*/*'}));
//router(app) allows us to pass app into the file
router(app);
//server setup
const port = process.env.PORT || 3090;
const server = http.createServer(app);
//socket.io setup
const io = require('socket.io')(server);
let rooms = [];
let roomIndex = '';
io.on('connection', function(socket) {
console.log('a user connected');
socket.on('join room', function(data) {
let roomId = data;
if(rooms.indexOf(roomId) === -1) {
rooms.push(roomId);
}
roomIndex = rooms.indexOf(roomId);
socket.join(roomId);
})
socket.on('newChoice', function(data) {
let pollId = data.pollId;
let pollTitle = data.pollTitle;
let pollOptions = data.options;
if(pollOptions.indexOf(data.newOption) === -1) {
pollOptions.push(data.newOption);
}
Poll.findById(pollId)
.then((poll) => {
poll.pollOptions = pollOptions;
let result = {choice: data.newOption, count: 0};
//if results are empty
if(!poll.results.length) {
result.count++;
poll.results.push(result);
}
else {
//check for matches
let count = 0;
for(let i = 0; i < poll.results.length; i++) {
if(poll.results[i].choice === result.choice) {
poll.results[i].count++;
}
else {
count++;
}
}
//if there are no matches
if(poll.results.length === count) {
result.count++;
poll.results.push(result);
}
}
poll.save();
let pollData = poll;
let showPollForm = false;
io.sockets.in(rooms[roomIndex]).emit('new poll data', {pollData: pollData, showPollForm: showPollForm});
})
});
socket.on('disconnect', function() {
console.log('user disconnected');
});
});
server.listen(port);
console.log('serving listening on: ', port);