How to configure html's lang attribute depending on the URL using angular SSR

I'm trying to migrate my Angular App to an Angular SSR for better SEO. I need to provide the html's lang attribute depending on the route :

• If the route starts with /fr, set it to fr
• If the route starts with /en, set it to en

I think I have to use this in my AppComponent :

public readonly document = inject(DOCUMENT);

constructor() {
this.document.documentElement.lang = myLanguage;
}


But I have no idea how to retrieve the route to know which language I should set.

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