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Dir : ~/home/id/dalily.dev-unit.com/app/Http/Middleware/
View File Name : SetDefaultLocale.php

<?php
/*
 * LaraClassifier - Classified Ads Web Application
 * Copyright (c) BeDigit. All Rights Reserved
 *
 * Website: https://laraclassifier.com
 * Author: Mayeul Akpovi (BeDigit - https://bedigit.com)
 *
 * LICENSE
 * -------
 * This software is provided under a license agreement and may only be used or copied
 * in accordance with its terms, including the inclusion of the above copyright notice.
 * As this software is sold exclusively on CodeCanyon,
 * please review the full license details here: https://codecanyon.net/licenses/standard
 */

namespace App\Http\Middleware;

use App\Helpers\Common\Cookie;
use App\Models\Language;
use Closure;
use Illuminate\Http\Request;

class SetDefaultLocale
{
	protected static int $cacheExpiration = 3600;
	
	/**
	 * Handle an incoming request.
	 *
	 * @param \Illuminate\Http\Request $request
	 * @param \Closure $next
	 * @return mixed
	 */
	public function handle(Request $request, Closure $next)
	{
		// Exception for Install & Upgrade Routes
		if (isFromInstallOrUpgradeProcess()) {
			return $next($request);
		}
		
		// Exception for Locale Routes (Important)
		if (str_contains(currentRouteAction(), 'LocaleController@setLocale')) {
			return $next($request);
		}
		
		if (isAdminPanel()) {
			$this->setTranslationOfCurrentCountry();
			
			return $next($request);
		}
		
		// If the 'Website Country Language' detection option is activated
		// And if a Country has been selected (through the 'country' parameter)
		// Then, remove saved Language Code session (without apply it to the system)
		if (config('settings.localization.auto_detect_language') == 'from_country') {
			if (request()->query('country') == config('country.code')) {
				$this->forgetSavedLang();
				$this->setTranslationOfCurrentCountry();
				
				return $next($request);
			}
		}
		
		// Apply Session Language Code to the system
		if ($this->savedLangExists()) {
			$langCode = $this->getSavedLang();
			
			$cacheId = 'language.' . $langCode;
			$lang = cache()->remember($cacheId, self::$cacheExpiration, function () use ($langCode) {
				return Language::where('code', '=', $langCode)->first();
			});
			
			if (!empty($lang)) {
				// Config: Language (Updated)
				config()->set('lang.code', $lang->code);
				config()->set('lang.locale', $lang->locale);
				config()->set('lang.iso_locale', $lang->iso_locale);
				config()->set('lang.tag', $lang->tag);
				config()->set('lang.direction', $lang->direction);
				config()->set('lang.russian_pluralization', $lang->russian_pluralization);
				config()->set('lang.date_format', $lang->date_format ?? null);
				config()->set('lang.datetime_format', $lang->datetime_format ?? null);
				
				// Apply the country's language to the app
				// & to the system (if its locale is available on the server)
				app()->setLocale(config('lang.code'));
				systemLocale()->setLocale(config('lang.locale'));
			}
		}
		
		$this->setTranslationOfCurrentCountry();
		
		return $next($request);
	}
	
	/**
	 * Set the translation of the current Country
	 *
	 * @return void
	 */
	private function setTranslationOfCurrentCountry(): void
	{
		if (config()->has('country.name')) {
			$countryName = getColumnTranslation(config('country.name'));
			config()->set('country.name', $countryName);
		}
	}
	
	/**
	 * @return bool
	 */
	private function savedLangExists(): bool
	{
		if (config('larapen.core.storingUserSelectedLang') == 'cookie') {
			return Cookie::has('langCode');
		} else {
			return session()->has('langCode');
		}
	}
	
	/**
	 * @return string|null
	 */
	private function getSavedLang(): ?string
	{
		if (config('larapen.core.storingUserSelectedLang') == 'cookie') {
			$langCode = Cookie::get('langCode');
		} else {
			$langCode = session('langCode');
		}
		
		return is_string($langCode) ? $langCode : null;
	}
	
	/**
	 * Remove the Language Code from Session
	 *
	 * @return void
	 */
	private function forgetSavedLang(): void
	{
		if (config('larapen.core.storingUserSelectedLang') == 'cookie') {
			Cookie::forget('langCode');
		} else {
			if (session()->has('langCode')) {
				session()->forget('langCode');
			}
		}
	}
}