import { getPortalLogin } from "../../../actions/services/accountService";
import { consoleLogger } from "../../../actions/core/logger";

const WELSH_LANGUAGE_CODE = 846040000;

const resolveRequestLocale = (req) =>
    req?.query?.locale ||
    req?.body?.locale ||
    req?.cookies?.pedw_locale ||
    "en";

export default async function handler(req, res) {
    if (req.method !== "POST") {
        return res.status(405).json({ message: "Method not allowed" });
    }

    const email = String(req.body?.email || "")
        .trim()
        .toLowerCase();
    const sessionLocale = resolveRequestLocale(req);

    if (!email) {
        return res.status(200).json({ locale: sessionLocale });
    }

    try {
        const portalUserObj = await getPortalLogin(email);
        const preferredLanguage =
            portalUserObj?.value?.[0]?.pinswg_preferredlanguage;

        const locale =
            preferredLanguage === WELSH_LANGUAGE_CODE
                ? "cy"
                : preferredLanguage != null
                  ? "en"
                  : sessionLocale;

        return res.status(200).json({ locale });
    } catch (error) {
        consoleLogger(error);
        return res.status(200).json({ locale: sessionLocale });
    }
}