app.js

'use strict';

const koa = require('koa');
const app = module.exports = koa();
const chalk = require('chalk');
const conditional = require('koa-conditional-get');
const errorHandler = require('./middleware/error');
const etag = require('koa-etag');
const he = require('he');
const i18n = require('koa-i18n');
const langMap = require('./locales/languages.json');
const locale = require('koa-locale');
const logger = require('./lib/logger');
const koaLogger = require('jethro-koa');
const moment = require('moment');
const packInfo = require('./package.json');
const path = require('path');
const render = require('koa-ejs');
const router = require('./routes');
const xRequestId = require('koa-x-request-id');
const netjet = require('netjet');

const preload = netjet({
    cache: {
        max: 100
    }
});

/* istanbul ignore next: This is only to disable logging when testing. */
if (process.env.NODE_ENV !== 'test') {
    app.use(koaLogger());
}

locale(app);

app.use(
    function *localState(next) {
        let url = this.path.replace('/', '').toLowerCase();

        if (url === '') url = 'index';
        if (url === 'roomsettings') url = 'room settings';
        const title = url.charAt(0).toUpperCase() + url.slice(1);

        this.state.he = he;
        this.state.i18n = this.i18n;
        this.state.locale = this.cookies.get('locale');
        this.state.langs = Object.keys(this.i18n.locales);
        this.state.languages = [];
        for (let i = 0; i < this.state.langs.length; i++) {
            const lang = langMap[this.state.langs[i]];

            /* istanbul ignore next: Not possible to test yet.*/
            if (lang == null) continue;
            this.state.languages.push(`${lang.nativeName}/${lang.englishName}`);
        }
        this.state.moment = moment;
        this.state.page = url;
        this.state.title = title;
        preload(this.req, this.res, () => {});
        yield next;
    });

render(app, {
    root: path.join(__dirname, 'views'),
    layout: 'layout',
    viewExt: 'ejs',
    cache: app.env === 'production',
    debug: app.env !== 'production'
});

app.use(errorHandler);

app.use(i18n(app, {
    directory: './locales',
    extension: '.json',
    locales: ['en', 'cs', 'es', 'et', 'fr', 'hr', 'it', 'ms', 'pl', 'pt', 'sl', 'tr', 'zh'],
    modes: [
        'query',
        'cookie',
        'header',
        'url'
    ]
}));

app.use(xRequestId(app, {
    inject: true
}));

app.use(router.routes());
app.use(router.allowedMethods());

app.use(conditional());

app.use(etag());
app.use(require('koa-file-server')({
    maxage: 2592000,
    root: path.join(__dirname, 'public')
}));

app.name = 'p3Site';

/* istanbul ignore next: This is only to disable sentry when testing. */
if (process.env.NODE_ENV !== 'test') {
    const raven = require('raven');
    const config = require('./config.json');
    const sentry = new raven.Client(config.sentryKey);

    app.on('error', (err) => {
        sentry.captureException(err);
    });
}

/* istanbul ignore next: Not needed to be tested, just logs info */
app.listen((process.env.NODE_ENV === 'test' ? 0 : (process.env.PORT || 7001)), () => {
    logger('info', 'Web', `${chalk.cyan('Started:')} ${packInfo.name} ${chalk.cyan(' Version:')} ${packInfo.version} in ${app.env} environment`);
});