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index.js
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index.js
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const path = require('path')
const express = require('express')
require('express-async-errors')
const cors = require('cors')
const nunjucks = require('nunjucks')
const bodyParser = require('body-parser')
const cookieParser = require('cookie-parser')
const session = require('express-session')
const flash = require('connect-flash')
const i18n = require("i18n")
const moment = require('moment')
const redis = require('redis')
const fetch = require('node-fetch')
const { URL, resolve } = require('url')
const morgan = require('morgan');
const config = require('./config')
const dmsRoutes = require('./routes/dms')
const authRoutes = require('./routes/auth')
const {loadTheme, loadPlugins, processMarkdown} = require('./utils')
const logger = require('./utils/logger')
const RedisStore = require('connect-redis')(session)
module.exports.makeApp = function () {
const app = express()
app.set('config', config)
app.set('dms', require('./lib/dms'))
app.set('utils', require('./utils/index'))
app.set('logger', logger)
app.set('port', config.get('app:port'))
if (config.get('env') === 'development') {
const mocks = require('./fixtures')
mocks.initMocks()
logger.warn('You are activated the mocks.')
}
// Explicitely set views location - this is needed for Zeit to work
app.set('views', path.join(__dirname, '/views'))
// i18n
const translationsDir = config.get('TRANSLATIONS') || '/i18n'
i18n.configure({
cookie: 'defaultLocale',
directory: __dirname + translationsDir,
defaultLocale: config.get('DEFAULT_LOCALE') || 'en'
})
// Middlewares
// Theme comes first so it overrides
const themeDir = config.get('THEME_DIR')
const themeName = config.get('THEME')
if (themeName) {
app.use('/static', express.static(path.join(__dirname, `/${themeDir}/${themeName}/public`)))
}
// Default assets
app.use('/static', express.static(path.join(__dirname, '/public')))
const authEnabled = config.get('kratos') && config.get('kratos').admin && config.get('kratos').public
// Auth (kratos) isn't compatiable with body-parser
if (!authEnabled) {
app.use(
bodyParser.urlencoded({
extended: true
})
)
}
app.use(cors())
app.use(cookieParser())
app.use(i18n.init)
// Default session options
let sessionOptions = {
secret: config.get('SESSION_SECRET'),
rolling: true,
saveUninitialized: false,
cookie: {
maxAge: config.get("SESSION_COOKIE_MAX_AGE")
? parseInt(config.get("SESSION_COOKIE_MAX_AGE"))
: 60 * 60 * 1000
}
}
if (config.get('env') === 'production') {
app.set('trust proxy', 1) // trust first proxy
sessionOptions.cookie.secure = true // serve secure cookies
}
// Redis session store for production
if (config.get('REDIS_URL')) {
const redisClient = redis.createClient({
url: config.get('REDIS_URL')
})
redisClient.on('error', err => {
logger.error(err);
});
sessionOptions.resave = false
sessionOptions.store = new RedisStore({ client: redisClient })
}
app.use(session({ ...sessionOptions }))
// Handling session error
app.use(function (req, res, next) {
if (!req.session) {
var err = new Error();
err.status = 500;
err.statusText = 'Something has failed. Please, try again later.'
err.text = () => {
return 'Failed to configure session.'
}
next(err)
}
next()
})
// Configure Moment locale
app.use(function (req, res, next) {
moment.locale(i18n.getLocale(req))
next()
});
// enable flash messages
app.use(flash())
/*
Route to check the status of the application by
calling the package_search of backend with row count as 0
to check whether the application is returning response or not
*/
app.get('/status', async (req, res) => {
const url = resolve(
config.get('API_URL'),
`package_search?rows=0`
)
const response = await fetch(url, {
headers: { 'User-Agent': 'frontend-v2/latest (internal API call from frontend app)' }
})
if (response.ok) {
const body = await response.json()
if (body.success == true) {
res.status(200).send('Ok')
} else {
res.status(500).send('Not Ok')
}
}
})
// Auth
if (authEnabled) {
authRoutes(app)
}
// Get real IP address from server
morgan.token("remote-addr", function (req) {
return (
req.headers["x-real-ip"] ||
req.headers["x-forwarded-for"] ||
req.ip ||
req._remoteAddress ||
(req.connection && req.connection.remoteAddress) || undefined);
});
app.use(morgan('combined'))
app.use((req, res, next) => {
res.locals.message = req.flash('info')
next()
})
loadPlugins(app)
loadTheme(app)
// Redirect x/y/ to x/y
app.use((req, res, next) => {
if(req.url.substr(-1) === '/' && req.url.length > 1) {
res.redirect(301, req.url.slice(0, req.url.length-1))
}
else {
next()
}
})
// Controllers
app.use([
dmsRoutes()
])
// Redirect to 404 page for other invalid URL request.
app.get('*', function (req, res, next) {
let err = new Error()
err.status = 404
err.statusText = 'PAGE NOT FOUND'
err.text = () => {
return 'PAGE NOT FOUND'
}
next(err)
})
app.use(async (err, req, res, next) => {
if (err.status >= 400 && err.status < 500) {
logger.warn(`${err.statusText} ${err.status} | ${await err.text()}`)
res.status(err.status).render('404.html', {
message: err.statusText,
status: err.status
})
return
} else if (err.status >= 500) {
logger.error(`${err.statusText} ${err.status} | ${await err.text()}`)
res.status(500).send('Something failed. Please, try again later.')
} else {
logger.error(err)
res.status(500).send('Something failed. Please, try again later.')
}
})
// look for views template folder and in plugins folders
const views = [path.join(__dirname, `/plugins`), app.get('views')]
// also look for view templates in enabled theme directory
if (themeName) {
views.unshift(path.join(__dirname, `/${themeDir}/${themeName}/views`))
}
const env = nunjucks.configure(views, {
autoescape: true,
express: app
})
env.addFilter('formatDate', (date) => {
try {
return moment(date).format('YYYY[-]MM[-]DD')
} catch (e) {
logger.warn('Failed to format date', e)
return date || '--'
}
})
env.addFilter('formatDateFromNow', (date) => {
try {
return moment.utc(date).fromNow()
} catch (e) {
logger.warn('Failed to format date', e)
return date || '--'
}
})
env.addFilter('processMarkdown', (str) => {
try {
return processMarkdown.render(String(str))
} catch (e) {
logger.warn('Failed to format markdown', e)
return str
}
})
env.addFilter('split', (str, regExp) => {
try {
return str.match(regExp)
} catch (e) {
logger.warn('Failed to split string by regular expression', e)
return str
}
})
env.addFilter('find', (resources, name) => {
try {
return resources.find(resource => resource.name === name)
} catch (e) {
logger.warn('Failed to find resource', e)
return str
}
})
return app
}
module.exports.start = function () {
return new Promise((resolve, reject) => {
const app = module.exports.makeApp()
let server = app.listen(app.get('port'), () => {
logger.info('Listening on :' + app.get('port'))
resolve(server)
})
app.shutdown = function () {
server.close()
server = null
}
})
}
if (process.env.NODE_ENV !== 'test') {
module.exports.start()
}