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main.js
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main.js
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var express = require('express');
var app = express();
var router = express.Router();
var bodyParser = require('body-parser');
var mongoConn = require('mongodb');
var assert = require('assert');
var path = require('path');
app.use(bodyParser.json());
app.use(bodyParser.urlencoded({
extended: true
}));
var assert = require('assert');
var uri = "mongodb://witnessUser:[email protected]:61410/witness-data";
app.get('/', function(req, res) {
res.sendFile(path.join(__dirname + '/index.html'));
});
/// Returns every user in the db
app.get('/users', function(req, res) {
res.header("Access-Control-Allow-Origin", "*");
res.header("Access-Control-Allow-Headers", "Origin, X-Requested-With, Content-Type, Accept");
console.log('Request to pull all users');
mongoConn.connect(uri, function(err, db) {
var users = db.collection('users').find({}).sort({score: -1}).toArray();
users.then((fulfilled) => {
res.send(fulfilled);
console.log('users sent');
});
db.close();
});
});
/// Gets a sessionID
/// Returns that user, or an error
app.get('/users/:id', function(req, res) {
res.header("Access-Control-Allow-Origin", "*");
res.header("Access-Control-Allow-Headers", "Origin, X-Requested-With, Content-Type, Accept");
console.log('Request to pull a single user');
if(req.params.id == undefined || req.params.id == '') {
console.log('User not sent - invalid sessionID');
res.send('Error: Invalid sessionID');
} else {
mongoConn.connect(uri, function(err, db) {
var user = db.collection('users').findOne({sessionID: req.params.id});
user.then((fulfilled) => {
if(fulfilled == undefined || fulfilled == '') {
console.log('User not send - does not exist');
res.send('Error: No such user');
} else {
console.log('User (' + fulfilled.sessionID + ') ' + fulfilled.name + ' sent.')
res.send(fulfilled);
}
});
db.close();
});
}
});
// Gets sessionID and userName for new user.
// If sessionID isn't in use, inserts into database.
// else: return error
app.post('/users', function(req, res) {
console.log('Adding a new user');
var newUser = {
sessionID: req.body.sessionID,
name: req.body.userName,
score: 0
};
if(newUser['name'] == undefined || newUser['name'] == '') {
newUser['name'] = 'Anonymous Mahanet User';
}
mongoConn.connect(uri, function(err, db) {
var user = db.collection('users').findOne({sessionID: req.body.sessionID});
user.then((fulfilled) => {
// Checking to see if a user with that sessionID already exists
if(fulfilled != null) {
console.log("User with that sessionID already exists");
res.send('Error: sessionID already in use');
db.close();
} else {
var result = db.collection('users').insertOne(newUser, function(err, req) {
console.log('Item with name ' + newUser['name'] + ' inserted');
res.send('OK');
db.close();
});
}
});
});
});
/// Gets a sessionID and a score.
/// If user with sessionID exists, updates the user's score with the amount sent (adds)
/// Else, creates the user
/// Returns the updated score
app.post('/scoring', function(req, res) {
console.log('Request for scoring');
mongoConn.connect(uri, function(err, db) {
console.log(err);
console.log('logging into mongo to check if user exists');
var user = db.collection('users').findOne({sessionID: req.body.sessionID});
user.then((fulfilled) => {
if(fulfilled == null) {
console.log('User not found, creating new user');
var newUser = {
sessionID: req.body.sessionID,
name: req.body.userName,
score: parseInt(req.body.score)
};
if(newUser['name'] == undefined || newUser['name'] == '') {
newUser['name'] = 'Anonymous Mahanet User';
}
var result = db.collection('users').insertOne(newUser, function(err, req) {
console.log('Item with name ' + newUser['name'] + ' inserted - Through /scoring');
res.send({status: "OK", score: newUser.score});
db.close();
});
} else {
fulfilled.score = parseInt(fulfilled.score) + parseInt(req.body.score);
db.collection('users').update({sessionID: fulfilled.sessionID}, {$set: {score: fulfilled.score}});
console.log('Updated user (' + fulfilled.sessionID + ") " + fulfilled.name + ' with ' + req.body.score + ' points.');
res.send({status: "OK", score: fulfilled.score});
db.close();
}
});
});
});
var port = 8080;
app.listen(port, function() {
console.log("Connection started")
});
module.exports = router;
// Console will print the message
console.log('Server running at http://127.0.0.1:' + port);