const config = require('./settings/config.js');
require('app-module-path').addPath(config.BASE_DIR);
require('app-module-path').addPath(config.UTILS_DIR);
require('app-module-path').addPath(config.CONTROLLERS_DIR);

const express = require('express');
const pug = require('pug');
const http = require('http');
const path = require('path');
const log = require('log');
const model = require('model');
const repl = require('repl');
const User = require('auth/models');

// Load models
model.load(config.CONTROLLERS_DIR);

function startServer() {

    let app = express();
    let http = require('http').Server(app);

    var bodyParser = require('body-parser');
    app.use(bodyParser.json());
    app.use(bodyParser.urlencoded({ extended: true }));

    let session = require('cookie-session');
    let cookieParser = require('cookie-parser');

    app.set('view engine', 'pug');
    app.set('trust proxy', 1);

    app.use(cookieParser(config.SECRET_KEY));
    app.use(session({
        keys: [config.SECRET_KEY],
        maxAge: 365 * 24 * 60 * 60 * 1000
    }));

    // Log request and time to answer
    app.use(function(req, res, next) {
        let start = Date.now();
        res.on('finish', function() {
            log.request(req, res, Date.now() - start);
        });
        res.locals.session = req.session;
        if (req.session.user !== undefined) {
            req.session.user = User.fromJSON(req.session.user);
        }

        next();
    });

    // Give app access to all urls
    app.use(require('create-url'));

    // Load controllers
    require('controllers')(app, config.CONTROLLERS_DIR);

    // Static files
    app.use('/static', express.static(config.STATIC_DIR));

    // When route not found, raise not found
    app.use(function(req, res) {

        res.status(404);
        res.setHeader('Content-Type', 'text/html');

        res.render(config.BASE_DIR + '/templates/404.pug', res.locals, function(err, result) {
            if (err)
                console.log(err);
            res.send(result);
        });
    });

    http.listen(config.PORT, config.LISTEN_ADDRESS, function() {
        log.ready(
            'Now listening ' + config.LISTEN_ADDRESS +
            ':' + config.PORT
        );
    });

    // On sigint, stop the server
    process.on('SIGINT', function() {
        process.stdout.write('\r');
        log.debug('Stopping server...');
        process.exit(0);
    });
}

const commands = {
    runserver: startServer,
    reinitdb: model.reinitialize,
    shell: repl.start,
}

function showHelp() {
    console.log("Commands available:");
    for (let command in commands) {
        console.log('\t' + command);
    }
}

if (require.main === module) {
    if (process.argv.length != 3) {
        showHelp();
        return;
    }

    let command = process.argv[2];
    if (commands[command] === undefined) {
        showHelp();
        return;
    }

    commands[command]();
}