fix(website): language-specific pages not properly determined

Author: eliandoran

apps/website/src/i18n.spec.ts

@@ -19,6 +19,7 @@ describe("swapLocale", () => {
         expect(swapLocaleInUrl("/ro/get-started", "ro")).toStrictEqual("/ro/get-started");
         expect(swapLocaleInUrl("/en/get-started", "ro")).toStrictEqual("/ro/get-started");
         expect(swapLocaleInUrl("/ro/", "en")).toStrictEqual("/en/");
+        expect(swapLocaleInUrl("/ro", "en")).toStrictEqual("/en");
     });
 });
 

apps/website/src/i18n.ts

@@ -35,7 +35,13 @@ export function mapLocale(locale: string) {
 export function swapLocaleInUrl(url: string, newLocale: string) {
     const components = url.split("/");
     if (components.length === 2) {
-        return `/${newLocale}${url}`;
+        const potentialLocale = components[1];
+        const correspondingLocale = LOCALES.find(l => l.id === potentialLocale);
+        if (correspondingLocale) {
+            return `/${newLocale}`;
+        } else {
+            return `/${newLocale}${url}`;
+        }
     } else {
         components[1] = newLocale;
         return components.join("/");