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server.js
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server.js
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const express = require('express');
const path = require('path');
const bodyParser = require('body-parser');
const { exec } = require('child_process');
const fs = require('fs');
const formidable = require('formidable');
const { exception } = require('console');
const outputDir = "./static/output/";
const hapiFile = `${outputDir}/main.hp`;
const program = `bin/hapi.jar`;
const resultHapiFile = `${outputDir}/main.yaml`;
const resultActorsFile = `${outputDir}/actors.dot`;
const resultResourcesFile = `${outputDir}/resources.dot`;
const resultActionsFile = `${outputDir}/actions.dot`;
const app = express();
const jsonParser = bodyParser.json()
app.use(express.static('static'));
function moveFiles(files){
var oldpath = '';
var newpath = '';
for(key in files){
oldpath = files[key].path;
newpath = files[key].name;
fs.rename(oldpath, outputDir+newpath, function (err) {
if (err) throw err;
});
}
}
function removeOldFiles(dirPath) {
try { var files = fs.readdirSync(dirPath); }
catch(e) { return; }
if (files.length > 0)
for (var i = 0; i < files.length; i++) {
var filePath = dirPath + '/' + files[i];
if (fs.statSync(filePath).isFile())
fs.unlinkSync(filePath);
}
};
function FileReceivingError(message){
this.message = 'Main file is required';
this.name = 'InexistentMain'
}
Object.size = function(obj) {
var size = 0, key;
for (key in obj) {
if (obj.hasOwnProperty(key)) size++;
}
return size;
};
app.post('/generate', function(req, res, next){
var fs = require('fs');
var form = new formidable.IncomingForm();
form.parse(req, function (err, fields, files) {
var mainFileName = undefined;
try{
if (!files.main)
throw new FileReceivingError('Main file is required');
if(Object.size(files) > 6)
throw new FileReceivingError('Files quantity overflow');
mainFile = files.main.name.substr(0, files.main.name.lastIndexOf("."));
removeOldFiles(outputDir);
moveFiles(files);
} catch (e){
res.status(500);
res.json({ error: { msg: e.message}});
}
// mainFile = outputDir+files.main.name;
exec(`java -jar ${program} ${outputDir+mainFile}.hp`,
(error, stdout, stderr) => {
if (error || stderr) {
// console.log('stderr: ' + stderr);
res.status(500);
res.json({ error: { msg: stderr, ...error } });
return;
}
const resultHapi = fs.readFileSync(`${outputDir+mainFile}.yaml`, "utf8");
const resultActors = fs.readFileSync(resultActorsFile, "utf8");
const resultResources = fs.readFileSync(resultResourcesFile, "utf8");
const resultActions = fs.readFileSync(resultActionsFile, "utf8");
const resultHtmlMatrix = fs.readFileSync(`${outputDir+mainFile}.html`, "utf8");
const resultJsonMatrix = fs.readFileSync(`${outputDir+mainFile}.json`, "utf8");
res.json({
yaml: resultHapi,
actors: resultActors,
resources: resultResources,
actions: resultActions,
htmlMatrix: resultHtmlMatrix,
jsonMatrix: resultJsonMatrix,
datamap: stdout
});
});
});
});
app.listen(8080, () => {
console.log("server running!");
if(!fs.existsSync(outputDir) ||
(fs.existsSync(outputDir) && !fs.statSync(outputDir).isDirectory()))
fs.mkdirSync(outputDir);
});