كيفية تذكر اختيار اللغة عبر الجلسات في React Router v7

import { createCookie } from "react-router";

export const languagePreference = createCookie("language-preference", {
  maxAge: 31536000,
  httpOnly: false,
  secure: process.env.NODE_ENV === "production",
  sameSite: "lax",
});

import { redirect } from "react-router";
import type { Route } from "./+types/root";
import { languagePreference } from "./cookies";

export async function action({ request }: Route.ActionArgs) {
  const formData = await request.formData();
  const selectedLanguage = formData.get("language");

  if (typeof selectedLanguage === "string") {
    return redirect(`/${selectedLanguage}`, {
      headers: {
        "Set-Cookie": await languagePreference.serialize(selectedLanguage),
      },
    });
  }

  return redirect("/");
}

import { Form } from "react-router";

export function LanguageSelector({
  currentLanguage,
}: {
  currentLanguage: string;
}) {
  return (
    <Form method="post">
      <select
        name="language"
        defaultValue={currentLanguage}
        onChange={(e) => e.currentTarget.form?.requestSubmit()}
      >
        <option value="en">English</option>
        <option value="es">Español</option>
        <option value="fr">Français</option>
        <option value="de">Deutsch</option>
      </select>
    </Form>
  );
}

import { redirect } from "react-router";
import type { Route } from "./+types/root";
import { languagePreference } from "./cookies";

export async function loader({ request }: Route.LoaderArgs) {
  const url = new URL(request.url);
  const cookieHeader = request.headers.get("Cookie");
  const storedLanguage = await languagePreference.parse(cookieHeader);

  if (url.pathname === "/" && storedLanguage) {
    return redirect(`/${storedLanguage}`);
  }

  return null;
}

import { redirect } from "react-router";
import type { Route } from "./+types/root";
import { languagePreference } from "./cookies";

const SUPPORTED_LANGUAGES = ["en", "es", "fr", "de"];

export async function loader({ request }: Route.LoaderArgs) {
  const url = new URL(request.url);
  const cookieHeader = request.headers.get("Cookie");
  const storedLanguage = await languagePreference.parse(cookieHeader);

  if (
    url.pathname === "/" &&
    storedLanguage &&
    SUPPORTED_LANGUAGES.includes(storedLanguage)
  ) {
    return redirect(`/${storedLanguage}`);
  }

  return null;
}