1 files changed, 47 insertions, 0 deletions
diff --git a/code/app/src/hooks.server.ts b/code/app/src/hooks.server.ts
new file mode 100644
index 0000000..91bdeff
--- /dev/null
+++ b/code/app/src/hooks.server.ts
@@ -0,0 +1,47 @@
+import { CookieNames } from "$lib/configuration";
+import { detectLocale, i18n, isLocale, locales } from '$lib/i18n/i18n-util'
+import type { Handle, RequestEvent } from '@sveltejs/kit'
+import { initAcceptLanguageHeaderDetector } from 'typesafe-i18n/detectors'
+import type { Locales } from "$lib/i18n/i18n-types";
+import { loadAllLocales } from "$lib/i18n/i18n-util.sync";
+
+
+loadAllLocales()
+const L = i18n()
+
+export const handle: Handle = async ({ event, resolve }) => {
+    const localeCookie = event.cookies.get(CookieNames.locale);
+    const preferredLocale = getPreferredLocale(event);
+    let finalLocale = localeCookie ?? preferredLocale;
+
+    console.log("Handling locale", {
+        locales,
+        localeCookie,
+        preferredLocale,
+        finalLocale
+    });
+
+    if (!isLocale(finalLocale)) {
+        console.log(finalLocale + " is not a valid locale or it does not exist, defaulting to en");
+        finalLocale = "en"
+    }
+
+    if (!localeCookie) {
+        // Set a locale cookie
+        event.cookies.set(CookieNames.locale, finalLocale, {
+            sameSite: "strict",
+            path: "/",
+            httpOnly: false
+        });
+    }
+
+    event.locals.locale = finalLocale as Locales;
+    event.locals.LL = L[finalLocale as Locales];
+
+    return resolve(event, { transformPageChunk: ({ html }) => html.replace('%lang%', finalLocale) });
+}
+
+function getPreferredLocale(event: RequestEvent) {
+    const acceptLanguageDetector = initAcceptLanguageHeaderDetector(event.request);
+    return detectLocale(acceptLanguageDetector);
+}