Checkmate/server/middleware/languageMiddleware.js

import logger from "../utils/logger.js";

const languageMiddleware = (stringService, translationService) => async (req, res, next) => {
	try {
		const acceptLanguage = req.headers["accept-language"] || "en";
		const language = acceptLanguage.split(",")[0].slice(0, 2).toLowerCase();

		translationService.setLanguage(language);
		stringService.setLanguage(language);

		next();
	} catch (error) {
		logger.error({
			message: error.message,
			service: "languageMiddleware",
		});
		const acceptLanguage = req.headers["accept-language"] || "en";
		const language = acceptLanguage.split(",")[0].slice(0, 2).toLowerCase();

		translationService.setLanguage(language);
		stringService.setLanguage(language);

		next();
	}
};

export default languageMiddleware;