// Replaces the locale slug in a URL.
//
// If the `full` argument is set to `true`, the full URL is returned as a string.
// e.g. https://mywebsite.com/en/blog/article-1 => https://mywebsite.com/de/blog/article-1
//
// Otherwise (default) the URL relative to the base is returned.
// e.g. https://mywebsite.com/en/blog/article-1 => /de/blog/article-1
export const replaceLocaleInUrl = (url: URL, locale: string, full = false): string => {
	const [, , ...rest] = url.pathname.split("/");
	const new_pathname = `/${[locale, ...rest].join("/")}`;
	if (!full) {
		return `${new_pathname}${url.search}`;
	}
	const newUrl = new URL(url.toString());
	newUrl.pathname = new_pathname;
	return newUrl.toString();
};