<?php

namespace Modules\Localization\Http\Middleware;

use Closure;
use Illuminate\Http\Request;
use Illuminate\Support\Facades\Schema;
use Modules\Localization\Models\Locale;
use Symfony\Component\HttpFoundation\Response;

final class SetLocale
{
    public function handle(Request $request, Closure $next): Response
    {
        $sessionKey = (string) config('localization.session_key', 'locale');
        $fallback = (string) config('localization.default_locale', config('app.locale', 'en'));

        $code = $request->route('locale');

        if (! $code && $request->hasSession()) {
            $code = $request->session()->get($sessionKey);
        }

        if (! Schema::hasTable('locales')) {
            app()->setLocale(is_string($code) && $code !== '' ? $code : $fallback);

            return $next($request);
        }

        if (! $code) {
            $code = Locale::query()
                ->where('is_default', true)
                ->value('code') ?: $fallback;
        }

        $isActive = Locale::query()
            ->where('code', $code)
            ->where('is_active', true)
            ->exists();

        if ($isActive) {
            app()->setLocale((string) $code);

            if ($request->hasSession()) {
                $request->session()->put($sessionKey, $code);
            }
        } else {
            app()->setLocale($fallback);
        }

        return $next($request);
    }
}