Add NunjucksComponent

src/components/NunjucksComponent.ts

@@ -0,0 +1,38 @@
+import nunjucks from "nunjucks";
+import config from "config";
+import {Express, Router} from "express";
+import ApplicationComponent from "../ApplicationComponent";
+import Controller from "../Controller";
+import {ServerError} from "../HttpError";
+
+export default class NunjucksComponent extends ApplicationComponent<void> {
+    public async start(app: Express, router: Router): Promise<void> {
+        const env = nunjucks.configure('views', {
+            autoescape: true,
+            express: app,
+            noCache: !config.get('view.cache'),
+            throwOnUndefined: true,
+        })
+            .addGlobal('route', (route: string, params: { [p: string]: string } | [] = [], absolute: boolean = false) => {
+                const path = Controller.route(route, params, absolute);
+                if (path === null) throw new ServerError(`Route ${route} not found.`);
+                return path;
+            })
+            .addGlobal('app_version', require('../package.json').version)
+            .addFilter('hex', (v: number) => {
+                return v.toString(16);
+            });
+        app.set('view engine', 'njk');
+
+        router.use((req, res, next) => {
+            req.env = env;
+            res.locals.url = req.url;
+            res.locals.params = () => req.params;
+            next();
+        });
+    }
+
+    public async stop(): Promise<void> {
+    }
+
+}