var fs = require('fs');
var path = require('path');
var ndir = require('ndir');

var mod = require('express/node_modules/connect/node_modules/formidable');
var upload_path = path.join(path.dirname(__dirname), 'public/user_data/images');
ndir.mkdir(upload_path, function(err) {
  if (err) throw err;
  mod.IncomingForm.UPLOAD_DIR = upload_path;
});

exports.upload_image = function(req, res, next) {
  if (!req.session || !req.session.user) {
    res.send('forbidden!');
    return;
  }
  var host = req.headers.host;
  var file = req.files.userfile;
  // sould use async
  if (file) {
    var name = file.name;
    var ext = name.substr(name.lastIndexOf('.'),4);
    var uid = req.session.user._id.toString();
    var time = new Date().getTime();
    var new_name = uid + time + ext;
    var userDir = path.join(upload_path, uid);
    ndir.mkdir(userDir, function(err) {
      if (err) return next(err);
      var new_path = path.join(userDir, new_name);
      fs.rename(file.path, new_path, function(err) {
        if (err) {
          return next(err);
        }
        var url = 'http://' + host + '/user_data/images/' + uid + '/' + new_name;
        res.json({ status: 'success', url: url });
      });
    });
  } else {
    res.json({ status: 'failed' });
    return;
  }
};