'use strict';

require('babel-register');

/*
 * The main file that sets up the Express instance and node
 *
 * @module server/server
 * @type {Express instance}
 */

// set up some globals (these are also set in Epiphany if not already set)
global.ENV = process.env.NODE_ENV || 'development';
global.PWD = process.env.PWD || process.cwd();

// set default compiler options in marko
// this needs to be set like this to ensure the compiler
// uses this setting when generating custom tags from marko.json files
//require('marko/compiler').defaultOptions.writeToDisk = false;

// make node understand `*.marko` files
require('marko/node-require').install();

// modules > native
const p = require('path');

// modules > 3rd party
const requireDir = require('require-dir');
const _ = require('lodash');
const express = require('express');
const mongoose = require('mongoose');

// modules > express middlewares
const bodyParser = require('body-parser');
const session = require('express-session');
const cookieParser = require('cookie-parser');

const appModulePath = require('app-module-path');

// needed when symlinking warepot/mongopot/hats
appModulePath.addPath(p.join(process.env.PWD, 'node_modules'));
appModulePath.addPath(p.join(process.env.PWD, 'modules'));

const chalk = require('chalk');
const colorizeStack = require('warepot/util/colorize-stack');

// make error output stack pretty
process.on('uncaughtException', function (err) {
  console.error(chalk.red('UNCAUGHT EXCEPTION'));
  console.error(err);
  console.log(err.fileName);
  console.log(err.message);
  console.log(err.name);
  console.log(colorizeStack(err.stack));
  //logError(err, null, { console: true, database: false });
  process.exit(1);
});

const initRoutes = require('warepot/util/init-routes');

const config = requireDir('./config');

const prewares = [
  express.static(config.dir.static, ENV === 'production' ? { maxAge: '1 year' } : null),
  express.static(config.dir.uploads, ENV === 'production' ? { maxAge: '1 year' } : null),
  bodyParser.json(),
  bodyParser.urlencoded({ extended: true }),
  cookieParser(config.session.secret),
  session(config.session),
];

if (ENV === 'development') {
  // only log requests to console in development mode
  prewares.unshift(require('morgan')('dev'));
}

// set up default postwares
const postwares = [
  require('warepot/ensure-found'),
  // transform and log error
  require('warepot/error-handler'),
  // respond
  require('warepot/responder'),
  // handle error rendering error
  require('warepot/responder-error'),
];

const routes = [].concat(
  prewares,
  require('./routes'),
  postwares
);

const server = express();

// see http://expressjs.com/en/4x/api.html#app.settings.table
server.set('trust proxy', true);

_.extend(server.locals, {
  site: require('./config/site'),
  lang: process.env.NODE_LANG || 'en',
  js: require(p.join(PWD, 'public/js.json')),
  css: require(p.join(PWD, 'public/css.json'))
});

initRoutes(server, routes);

// override default res.render so we can use loaded marko templates, ie `res.render(markoTemplate)`
express.response.render = function (template) {
  const locals = _.extend({}, server.locals, this.locals);

  template.render(locals, this);
};

// connect to mongodb
mongoose.connect(config.mongo.uri, _.omit(config.mongo, 'uri'));

// start server and let them know it
server.listen(config.port, () => {
  console.info('Express server started on port %s (%s)', config.port, ENV);
});

module.exports = server;