<?php

namespace App\Http\Controllers\Web;

use App\Http\Controllers\Controller;
use Illuminate\Http\RedirectResponse;
use Illuminate\Http\Request;
use Illuminate\Support\Facades\App;

/**
 * Language switcher controller.
 *
 * Persists the selected locale (pt_BR, en, es) in the session and in the
 * user's profile when authenticated, so the whole UI is rendered in the
 * language chosen from the dashboard or the public pages.
 */
class LanguageController extends Controller
{
    /**
     * Switch the application locale for the current visitor.
     */
    public function switch(Request $request): RedirectResponse
    {
        $locale = $request->input('locale');

        if (! in_array($locale, ['pt_BR', 'en', 'es'], true)) {
            return back();
        }

        App::setLocale($locale);
        $request->session()->put('locale', $locale);

        if ($user = $request->user()) {
            $user->update(['locale' => $locale]);
        }

        // Persist the cookie preference (1 year) used on subsequent visits.
        $response = back();
        $previousPath = (string) parse_url($response->getTargetUrl(), PHP_URL_PATH);

        // The 3D viewer fetches /city/data via XHR, which can become the
        // session's "previous URL" and would dump the user on raw JSON.
        if ($previousPath === '/city/data') {
            $response = redirect()->route('city.viewer');
        }

        $response->withCookie(cookie('city10-locale', $locale, 60 * 24 * 365, '/', null, false, true));

        return $response;
    }
}