There is a code. It’s logic is at first to get file from a client (uploadFile), then load it to another server (changeImage), then load the answer (loadFile). It’s all done with promises to chain them together but it doesn’t work. It keeps to fall dawn. I have tried to change it a lot. Well actually I spent this whole day trying. But there is no result. In this version it’s falling without any mistakes in console. Can you help me?
var fs = require('fs'),
http = require('http'),
url = require('url'),
multiparty = require('multiparty'),
request = require('request');
var server = new http.Server();
var ifs = require('os').networkInterfaces();
var result = Object.keys(ifs)
.map(x => [x, ifs[x].filter(x => x.family === 'IPv4')[0]])
.filter(x => x[1])
.map(x => x[1].address)[2];
console.log('\nUse this ip: ' + result);
console.log("Successfully started\n");
server.listen('80', result);
server.on('request', onRequest);
function onRequest(req, res) {
var parsed = url.parse(req.url, true);
switch (parsed.pathname) {
case '/':
case '/index.html':
fs.readFile('index.html', function(err, file) {
if (err) res.end();
res.end(file);
});
break;
case '/file':
uploadFile(req)
.then(function(a) {
return changeImage({
'uploadfile': fs.createReadStream('./files/temp.jpg'),
'ef-set': 10,
'ef-set-2': 10,
'jpeg-quality': 80
}, 'https://www.imgonline.com.ua/grid-square-result.php',
'http://www.imgonline.com.ua/',
new RegExp(/download\.php\?file=.+?\.jpg/))
})
.then(function(link) {
//it falls before here because console.log('H') here won't show 'H' :-|
loadFile(link);
})
.then(function() {
return changeImage({
'uploadfile': fs.createReadStream('./files/temp.jpg'),
'efset1': 2,
'outformat': 2,
'jpegtype': 1,
'jpegqual': 85,
'jpegmeta': 1
},
'https://www.imgonline.com.ua/add-effect-black-white-result.php', '',
new RegExp(/https:\/\/.+?\.jpg/)
);
})
.then(function(link) {
loadFile(link);
})
.then(function() {
res.end('files/temp.jpg');
})
.catch(function(err) {
console.log('ERR ', err);
});
break;
default:
fs.readFile('./' + req.url, function(err, file) {
if (err) res.end();
res.end(file);
});
}
}
function uploadFile(req) {
if (fs.existsSync('./files/temp.jpg')) {
fs.unlink('./files/temp.jpg', function(err) {
if (err) reject(err);
});
}
return new Promise(function(resolve, reject) {
var form = new multiparty.Form();
form.parse(req, function(err, fields, files) {
var path = files.uploadfile[0].path;
fs.copyFile(path, './files/temp.jpg', function(err) {
if (err) reject('ERRinCOPYING');
fs.unlink(path, function(err) {
if (err) reject(err);
var a = 0;
var timer = setInterval(function() {
if (fs.existsSync('./files/temp.jpg')) {
clearInterval(timer);
resolve();
}
}, 10);
});
});
});
});
}
function changeImage(formData, url, link, regExp) {
return new Promise(function(resolve, reject) {
request.post({
url: url,
formData: formData
}, function(err, resp, body) {
if (err) reject('ERRinREQUEST: ' + err);
link += body.match(regExp);
if (link.length > 32) {
resolve(link);
} else {
reject('ERROR! LINK WAS NOT FOUND');
}
});
});
}
function loadFile(link) {
request
.get(link)
.on('response', function(response) {
response.pipe(fs.createWriteStream('./files/temp.jpg'));
});
}
