/*!
 * nodeclub - app.js
 */

/**
 * Module dependencies.
 */

var fs = require('fs');
var path = require('path');
var Loader = require('loader');
var express = require('express');
var ndir = require('ndir');
var config = require('./config').config;
var passport = require('passport');
var Models = require('./models');
var User = Models.User;
var GitHubStrategy = require('passport-github').Strategy;
var githubStrategyMiddleware = require('./middlewares/github_strategy');
var routes = require('./routes');
var auth = require('./middlewares/auth');

var maxAge = 3600000 * 24 * 30;
var staticDir = path.join(__dirname, 'public');

// assets
var assets = {};
if (config.mini_assets) {
  try {
    assets = JSON.parse(fs.readFileSync(path.join(__dirname, 'assets.json')));
  } catch (e) {
    console.log('You must execute `make build` before start app when mini_assets is true.');
    throw e;
  }
}

// host: http://127.0.0.1
var urlinfo = require('url').parse(config.host);
config.hostname = urlinfo.hostname || config.host;

config.upload_dir = config.upload_dir || path.join(__dirname, 'public', 'user_data', 'images');
// ensure upload dir exists
ndir.mkdir(config.upload_dir, function (err) {
  if (err) {
    throw err;
  }
});

var app = express.createServer();

// configuration in all env
app.set('view engine', 'html');
app.set('views', path.join(__dirname, 'views'));
app.register('.html', require('ejs'));
app.use(express.bodyParser({
  uploadDir: config.upload_dir
}));
app.use(express.methodOverride());
app.use(express.cookieParser());
app.use(express.session({
  secret: config.session_secret
}));
app.use(passport.initialize());
// custom middleware
app.use(require('./controllers/sign').auth_user);
app.use(auth.blockUser());
app.use('/upload/', express.static(config.upload_dir, { maxAge: maxAge }));
// old image url: http://host/user_data/images/xxxx
app.use('/user_data/', express.static(path.join(__dirname, 'public', 'user_data'), { maxAge: maxAge }));

if (config.debug) {
  app.use('/public', express.static(staticDir));
  app.use(express.errorHandler({ dumpExceptions: true, showStack: true }));
} else {
  app.use(function (req, res, next) {
    var csrf = express.csrf();
    // ignore upload image
    if (req.body && req.body.user_action === 'upload_image') {
      return next();
    }
    csrf(req, res, next);
  });
  app.use('/public', express.static(staticDir, { maxAge: maxAge }));
  app.use(express.errorHandler());
  app.set('view cache', true);
}


// set static, dynamic helpers
app.helpers({
  config: config,
  Loader: Loader,
  assets: assets
});
app.dynamicHelpers(require('./common/render_helpers'));

if (process.env.NODE_ENV !== 'test') {
  // plugins
  var plugins = config.plugins || [];
  for (var i = 0, l = plugins.length; i < l; i++) {
    var p = plugins[i];
    app.use(require('./plugins/' + p.name)(p.options));
  }
}

// github oauth
passport.serializeUser(function (user, done) {
  done(null, user);
});
passport.deserializeUser(function (user, done) {
  done(null, user);
});
passport.use(new GitHubStrategy(config.GITHUB_OAUTH, githubStrategyMiddleware));

// routes
routes(app);

if (process.env.NODE_ENV !== 'test') {
  app.listen(config.port);

  console.log("NodeClub listening on port %d in %s mode", config.port, app.settings.env);
  console.log("God bless love....");
  console.log("You can debug your app with http://" + config.hostname + ':' + config.port);
}

module.exports = app;