137 lines
4.0 KiB
JavaScript
137 lines
4.0 KiB
JavaScript
const path = require('path')
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const bodyParser = require('body-parser')
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const cookieParser = require('cookie-parser')
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const express = require('express')
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const logger = require('morgan')
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const querystring = require('querystring')
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// Load environment variables using dotenv
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require('dotenv').config({ path: 'variables.env' })
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const helpers = require('./helpers')
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const breadcrumb = require('./lib/breadcrumb')
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const routes = require('./routes/index')
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const { initClients, getSpace } = require('./services/contentful')
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const { updateCookie } = require('./lib/cookies')
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const app = express()
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const SETTINGS_NAME = 'theExampleAppSettings'
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// View engine setup
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app.set('views', path.join(__dirname, 'views'))
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app.set('view engine', 'pug')
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app.use(logger('dev'))
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app.use(bodyParser.json())
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app.use(bodyParser.urlencoded({ extended: false }))
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app.use(cookieParser())
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app.use(express.static(path.join(__dirname, 'public')))
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app.use(breadcrumb())
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// Set our application state based on environment variables or query parameters
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app.use(async function (request, response, next) {
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// Set default settings based on environment variables
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let settings = {
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spaceId: process.env.CONTENTFUL_SPACE_ID,
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deliveryToken: process.env.CONTENTFUL_DELIVERY_TOKEN,
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previewToken: process.env.CONTENTFUL_PREVIEW_TOKEN,
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editorialFeatures: false,
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// Overwrite default settings using those stored in cookie, if present
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...request.cookies.theExampleAppSettings
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}
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// Allow setting of API credentials via query parameters
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const { space_id, preview_token, delivery_token } = request.query
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if (space_id && preview_token && delivery_token) { // eslint-disable-line camelcase
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settings = {
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...settings,
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spaceId: space_id,
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deliveryToken: delivery_token,
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previewToken: preview_token
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}
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updateCookie(response, SETTINGS_NAME, settings)
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}
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// Allow enabling of editorial features via query parameters
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const { enable_editorial_features } = request.query
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if (enable_editorial_features !== undefined) { // eslint-disable-line camelcase
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delete request.query.enable_editorial_features
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settings.editorialFeatures = true
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updateCookie(response, SETTINGS_NAME, settings)
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}
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initClients(settings)
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response.locals.settings = settings
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next()
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})
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// Make data available for our views to consume
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app.use(async function (request, response, next) {
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// Set active api based on query parameter
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const apis = [
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{
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id: 'cda',
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label: 'Delivery (published content)'
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},
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{
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id: 'cpa',
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label: 'Preview (draft content)'
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}
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]
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response.locals.currentApi = apis
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.find((api) => api.id === (request.query.api || 'cda'))
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// Get enabled locales from Contentful
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const space = await getSpace()
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response.locals.locales = space.locales
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const defaultLocale = response.locals.locales
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.find((locale) => locale.default)
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if (request.query.locale) {
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response.locals.currentLocale = space.locales
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.find((locale) => locale.code === request.query.locale)
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}
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if (!response.locals.currentLocale) {
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response.locals.currentLocale = defaultLocale
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}
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// Inject custom helpers
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response.locals.helpers = helpers
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// Make query string available in templates to render links properly
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const qs = querystring.stringify(request.query)
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response.locals.queryString = qs ? `?${qs}` : ''
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response.locals.query = request.query
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response.locals.currentPath = request.path
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next()
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})
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// Initialize the route handling
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// Check ./routes/index.js to get a list of all implemented routes
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app.use('/', routes)
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// Catch 404 and forward to error handler
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app.use(function (request, response, next) {
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var err = new Error('Not Found')
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err.status = 404
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next(err)
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})
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// Error handler
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app.use(function (err, request, response, next) {
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// Set locals, only providing error in development
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response.locals.error = request.app.get('env') === 'development' ? err : {}
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// Render the error page
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response.status(err.status || 500)
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response.render('error')
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})
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module.exports = app
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