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<?php |
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namespace W3designweb\LaravelCookieConsent\Http\Middleware; |
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use Closure; |
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use Illuminate\Http\Response; |
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use Throwable; |
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class LaravelCookieConsent |
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{ |
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/** |
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* Handle an incoming request. |
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* @param $request |
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* @param Closure $next |
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* |
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* @return LaravelCookieConsent|mixed |
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* @throws Throwable |
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*/ |
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public function handle($request, Closure $next) |
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{ |
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$alreadyAccepted = array_key_exists(config('laravel-cookie-consent.cookie_name'), $request->cookie()); |
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$cookieTypesAccepted = $this->getCookieTypesConsent($request); |
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$response = $next($request); |
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if (! $response instanceof Response) { |
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return $response; |
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} |
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if (! $this->containsBodyTag($response)) { |
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return $response; |
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} |
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return $this->addCookieConsentScriptToResponse($response, $alreadyAccepted, $cookieTypesAccepted); |
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} |
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/** |
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* Get the cookie preference for the user |
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* |
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* @param $request |
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* @return array |
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*/ |
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public function getCookieTypesConsent($request): array |
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{ |
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$cookieTypesConsent = []; |
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foreach(config('laravel-cookie-consent.cookie_types') as $type => $cookie_name) { |
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if(array_key_exists($cookie_name, $request->cookie())) $cookieTypesConsent[] = $cookie_name; |
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} |
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return $cookieTypesConsent; |
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} |
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/** |
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* Check if the application contains body tag |
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* @param Response $response |
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* |
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* @return bool |
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*/ |
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protected function containsBodyTag(Response $response): bool |
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{ |
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return $this->getLastClosingBodyTagPosition($response->getContent()) != false; |
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} |
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/** |
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* Add cookie consent container to the response |
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* |
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* @param Response $response |
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* @param $alreadyAccepted |
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* @param $cookieTypesAccepted |
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* |
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* @return Response |
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* @throws Throwable |
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*/ |
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protected function addCookieConsentScriptToResponse(Response $response, $alreadyAccepted, $cookieTypesAccepted): Response |
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{ |
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$content = $response->getContent(); |
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//if(!$alreadyAccepted) { |
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$closingBodyTagPosition = $this->getLastClosingBodyTagPosition($content); |
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$content = '' |
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.substr($content, 0, $closingBodyTagPosition) |
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.view('laravel-cookie-consent::_banner', ['alreadyAccepted' => $alreadyAccepted, 'cookieTypesAccepted' => $cookieTypesAccepted])->render() |
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.substr($content, $closingBodyTagPosition); |
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//} |
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return $response->setContent($content); |
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} |
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/** |
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* Get last closing body tag position |
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* @param string $content |
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* |
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* @return int |
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*/ |
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protected function getLastClosingBodyTagPosition(string $content = ''): int |
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{ |
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return strripos($content, '</body>'); |
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} |
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} |
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w3designweb /
laravel-cookie-consent
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