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index.js
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index.js
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var express = require('express');
var request = require('request');
var path = require('path');
var exphbs = require('express-handlebars');
var exec = require('child_process').exec;
var fs = require('fs');
var md5 = require('md5');
var app = express();
// view engine setup
app.engine('.tpl', exphbs({
defaultLayout: 'single',
extname: '.tpl'
}));
app.use(express.static(path.join(__dirname, 'public')));
app.set('views', path.join(__dirname, 'views'));
app.set('view engine', '.tpl');
// server route
app.get('/', function(req, res, next) {
res.render('index', {
title: 'Timelapse News'
});
});
app.get('/api/search/topic/:topic', function(req, res, next) {
// get topic
var cachedFile = path.join('cache', md5(req.params.topic)+'.json');
// check cache
fs.readFile(cachedFile, function(err, data) {
if(err) {
console.log('read err:',err);
// try to get result from jar
var cmd = "java -jar Timelapse.jar '"+ req.params.topic +"'";
exec(cmd, {maxBuffer: 1024*100000}, function(error, stdout, stderr) {
console.log('get data from jar, save to cache');
// get result, write to cache
fs.writeFile(cachedFile, stdout, function(err){
if (err) {
console.log('write err:', err);
}
return res.send(JSON.stringify(JSON.parse(stdout)));
});
});
} else {
console.log('got data from cache');
return res.send(JSON.stringify(JSON.parse(data)));
}
});
});
app.get('/mock/search/topic/:topic', function(req, res, next) {
// mock data for backend
// ...
var response = [
{
"geo":{
"latitude":"47.162494",
"longtitude":"19.503304",
"location":"Hungary"
},
"newsContent":{
"abstract":"UNKOWN",
"source":"ndtv",
"title":"Paris Attack Suspect 'Recruited Team' in Hungary: Government",
"url":"http://www.ndtv.com/world-news/paris-attack-suspect-recruited-team-in-hungary-government-1250847"
},
"time":{
"from":"2015-12-04",
"toTimeStamp":"null"
}
},
{
"geo":{
"latitude":"48.162494",
"longtitude":"19.703304",
"location":"Hungary"
},
"newsContent":{
"abstract":"UNKOWN",
"source":"ndtv",
"title":"Paris Attack Suspect 'Recruited Team' in Hungary: Government",
"url":"http://www.ndtv.com/world-news/paris-attack-suspect-recruited-team-in-hungary-government-1250847"
},
"time":{
"from":"2015-12-04",
"toTimeStamp":"null"
}
},
{
"geo":{
"latitude":"46.17",
"longtitude":"19.85",
"location":"Hungary"
},
"newsContent":{
"abstract":"UNKOWN",
"source":"ndtv",
"title":"Senior Officer Says London Police Could Handle Paris-Style Attack",
"url":"http://www.ndtv.com/world-news/senior-officer-says-london-police-could-handle-paris-style-attack-1250008"
},
"time":{
"from":"2015-12-02",
"toTimeStamp":"null"
}
},
{
"geo":{
"latitude":"44.17",
"longtitude":"19.99",
"location":"Hungary"
},
"newsContent":{
"abstract":"UNKOWN",
"source":"ndtv",
"title":"Senior Officer Says London Police Could Handle Paris-Style Attack",
"url":"http://www.ndtv.com/world-news/senior-officer-says-london-police-could-handle-paris-style-attack-1250008"
},
"time":{
"from":"2015-12-02",
"toTimeStamp":"null"
}
},
{
"geo":{
"latitude":"48.856614",
"longtitude":"2.3522219",
"location":"Paris"
},
"newsContent":{
"abstract":"UNKOWN",
"source":"ndtv",
"title":"David Beckham, Wayne Rooney Pay Tribute to Paris Attack Victims",
"url":"http://sports.ndtv.com/article/252556"
},
"time":{
"from":"2015-12-01",
"toTimeStamp":"null"
}
}
];
return res.send(response);
});
app.get('/api/search/query/:query', function(req, res, next) {
// mock data for backend
// ...
var response = {
input: req.params.query,
suggestion: req.params.query + 'kerker'
};
return res.send(JSON.stringify(response));
});
app.get('/tt', function(req, res) {
res.render('tt');
});
app.get('/test', function(req, res) {
res.render('test');
});
app.set('port', (process.env.PORT || 3000));
app.listen(app.get('port'), function() {
console.log('Node app is running on port', app.get('port'));
});