rentease/internal/server/handle_language.go

package server

import (
	"net/http"

	"github.com/go-chi/chi/v5"

	ri18n "github.com/rjNemo/rentease/internal/i18n"
)

func handleLanguage() http.HandlerFunc {
	return func(w http.ResponseWriter, r *http.Request) {
		locale := chi.URLParam(r, "locale")
		if locale != "fr" {
			locale = "en"
		}

		// Set preference cookie (1 year)
		http.SetCookie(w, &http.Cookie{
			Name:     ri18n.CookieName,
			Value:    locale,
			Path:     "/",
			MaxAge:   31536000,
			HttpOnly: false,
			SameSite: http.SameSiteLaxMode,
		})

		// Redirect back to referer or home
		referer := r.Header.Get("Referer")
		if referer == "" {
			referer = "/"
		}

		if hxRequest(r) {
			_ = hxRedirect(w, http.StatusSeeOther, referer)
			return
		}

		http.Redirect(w, r, referer, http.StatusSeeOther)
	}
}