/*eslint-env node*/

//------------------------------------------------------------------------------
// node.js starter application for Bluemix
//------------------------------------------------------------------------------

// This application uses express as its web server
var express = require('express'),
    bodyParser = require('body-parser'),
    urlencodedParser = bodyParser.urlencoded({ extended: false }),
    extend  = require('util')._extend,
  fs = require('fs'),
  request = require('request'),
    watson = require('watson-developer-cloud');

// credentials
var credentials_lang = extend({
   username: '246412c0-f39a-424c-a61e-4054cc589fef',
   password: 'lAna28GByO4x',
   version: 'v2'
});
//}, bluemix.getServiceCreds('language-translation')); // VCAP_SERVICES

var credentials_pers = extend({
   username: '2cc8d6f4-7389-4152-bd39-ea275f5c35d1',
   password: 'MLa2NOoxqj3M',
   version: 'v2'
});
//}, bluemix.getServiceCreds('personality_insights')); // VCAP_SERVICES

var visual_recognition = watson.visual_recognition({
  api_key: '3a979cdebdf9fa964a3df0c7ae4bebc78d8e50d7',
  version_date: '2016-05-20',
  version: 'v3'
});

var tone_analyzer = watson.tone_analyzer({
  username: '2e5702e8-b833-4444-b43d-25fffbd910ac',
  password: 'k18xypHwnilk',
  version: 'v3',
  version_date: '2016-05-19'
});


var personality_insights = watson.personality_insights(credentials_pers);
var language_translation = watson.language_translation(credentials_lang);

// cfenv provides access to your Cloud Foundry environment
var cfenv = require('cfenv');
// get the app environment from Cloud Foundry
var appEnv = cfenv.getAppEnv();
// create a new express server
var app = express();

app.use(express.static(__dirname + '/public'));

// adding the template "pug" (formerly jade)
app.set('view engine', 'pug');

//------------------------------------------------------------------------------
// routes
//------------------------------------------------------------------------------

var params = null;

app.get('/', function(req, res){
  res.render('index.pug');
})

.get('/api/translate', function(req, res){
  res.render('translate.pug');
})

.get('/api/personality', function(req, res){
  res.render('personality.pug');
})

.get('/api/visual', function(req, res){
  res.render('visual.pug');
})

.get('/api/search', function(req, res){
  res.render('twitter.pug');
})

// Language Translation
.post('/api/translate', urlencodedParser, function(req, res) {
  if (req.body.message != '') {
    params = {
      text: req.body.message,
      source: 'fr',
      target: 'en'
    };
    language_translation.translate(params, function (err, translatedMessage) {
      res.render('translate.pug', { 'translation': translatedMessage.translations[0].translation });
    });
  }
})

// Personality Insights
.post('/api/personality', urlencodedParser, function(req, res) {
  if (req.body.message != '') {
    params = { text: req.body.message };
    personality_insights.profile(params, function(err, personality) {
      res.render('personality.pug', { 'personality': JSON.stringify(personality, null, 2 ) });
    });
  }
})

// Visual Recognition
.post('/api/visual', urlencodedParser, function(req, res) {
  if (req.body.url) { // image externe
    params = {
      url: req.body.url,
      classifier_ids: 'default,chateau_bouges_855464739'
    };
  }

  if (req.body.sample == 'true') { // image sample
    params = {
      images_file: fs.createReadStream(__dirname + '/public' + req.body.sample_radio),
      classifier_ids: 'default,chateau_bouges_855464739'
    };
  }

  visual_recognition.classify(params , function(err, visual) {
    res.render('visual.pug', { 'visual': JSON.stringify(visual, null, 2 ) });
  });
})

// Insights for Twitter

.post('/api/search', urlencodedParser, function(req, res) {
  var query = '';
  var number = '5'; // nombre de tweets par défaut (100 initialement)
  var lang = '';
  var startTime = '';
  var author = '';

  if (req.body.query) { query = encodeURIComponent(req.body.query); } // Autorise l'utilisateur à indiquer un #hashtag
  if (req.body.number) {number = req.body.number; }

  // Paramètres de la query
  if (req.body.language) { lang = '+lang:' + req.body.language; }
  if (req.body.startTime) { startTime = '+posted:' + req.body.startTime; }
  if (req.body.author) {author = '+from:' + req.body.author; }

  // Construction de la query
  query = query + lang + startTime + author;

  var host = 'https://476d07a7-cc7d-4b61-b009-28178ca8bca2:mgAGIPtQou@cdeservice.mybluemix.net';
  var path = '/api/v1/messages/search';
  var url = host + path + '?q=' + query + '&size=' + number;

  // hijacked
  url = 'https://476d07a7-cc7d-4b61-b009-28178ca8bca2:mgAGIPtQou@cdeservice.mybluemix.net/api/v1/messages/search?q=(VillaCavrois OR "Villa Cavrois")+posted:2016-01-01+lang:fr&size=10';
  //    '(lang:fr%20OR%20lang:en) lang:fr lang:en

  request.get(url, function(error, response, file) {
    if(error) {
      response.send(error).status(400);
    }
    else {
      var json = JSON.parse(file);
      var messages = []; // liste de tweets
      var sentences = []; // liste de tweets nettoyés de ponctuation de fin de phrase
      var authors = []; // liste des auteurs des tweets
      var big_sentence = ''; // string contenant tous les tweets
      var positive; // JSON Tone Analyzer


      if (json.tweets) {
        json.tweets.forEach(function(item, index) {
          messages.push(item.message.body);
          var sentence = item.message.body.replace(/\.|\!|\?/g,'') + '. '; // Transforme chaque tweet en une phrase pour Tone Analyzer
          big_sentence += sentence;
          sentences.push(sentence);
          authors.push(item.message.actor.preferredUsername);

          // Traduit le texte en anglais si nécessaire
          if (req.body.language == 'fr')
          {
            language_translation.translate({
              text: big_sentence,
              source: 'fr',
              target: 'en'
            }, function(err, englishText) {
              if (err)
                console.log(err)
              else {
                big_sentence = englishText.translations[0].translation;
                tone_analyzer.tone( {
                  text: big_sentence,
                  tones: 'emotion'
                },
                  function(err, tone) {
                    if (err) {
                      console.log(err);
                    }
                    else {
                      positive = JSON.stringify(tone, null, 2 );
                      res.render('twitter.pug', { 'search': file, 'search2': json, 'tweets': messages, 'sentences':sentences, 'authors': authors, 'positive': positive });
                    }
                  });
              }
            });
          }
        });
        //res.render('twitter.pug', { 'search': file, 'search2': json, 'tweets': messages, 'sentences':sentences, 'authors': authors, 'positive': positive });
      }
      else {
        res.render('twitter.pug', { 'search': file});
      }
    }
  });
});






// start server on the specified port and binding host
app.listen(appEnv.port, '0.0.0.0', function() {
  // print a message when the server starts listening
  console.log("server starting on " + appEnv.url);
});