var express      = require('express');
var bodyParser   = require('body-parser');
var slug         = require('slug');
var _            = require('lodash');
var fs           = require('fs');
var app          = express();
var examplesJSON = __dirname + '/exemples/liste.json';
var examples     = require(examplesJSON);

app.use(express.static(__dirname));
app.use(bodyParser.json());

function addExample(slug, title) {
  examples.push({ slug: slug, title: title });
  fs.writeFileSync(examplesJSON, JSON.stringify(examples));
}

app.post('/examples', function(req, res) {
  var title = req.body.title;
  if(! req.body.title) {
    res.status(400).send('Le titre ne peut pas être vide !');
  }
  var existingTitle = _.find(examples, { title: title });
  if(existingTitle) {
    res.status(400).send("L'exemple '" + title + "' existe déjà !");
  }
  var exampleSlug = slug(req.body.title.toLowerCase());
  var targetDir = __dirname + '/exemples/' + exampleSlug;

  fs.mkdirSync(targetDir);
  fs.writeFileSync(targetDir + '/contenu.html');
  fs.writeFileSync(targetDir + '/script.js');
  addExample(exampleSlug, title);
  res.json({ slug: exampleSlug, title: title });
});

app.listen(3000);