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<?php

namespace Laminas\Mvc\Controller\Plugin;

use Laminas\Mvc\Exception\DomainException;
use Laminas\Http\Response;
use Laminas\Mvc\Exception;
use Laminas\Mvc\InjectApplicationEventInterface;
use Laminas\Mvc\MvcEvent;

class Redirect extends AbstractPlugin
{
    protected $event;
    protected $response;

    /**
     * Generate redirect response based on given route
     *
     * @param  string $route RouteInterface name
     * @param  array $params Parameters to use in url generation, if any
     * @param  array $options RouteInterface-specific options to use in url generation, if any
     * @param  bool $reuseMatchedParams Whether to reuse matched parameters
     * @return Response
     * @throws Exception\DomainException if composed controller does not implement InjectApplicationEventInterface, or
     *         router cannot be found in controller event
     */
    public function toRoute($route = null, $params = [], $options = [], $reuseMatchedParams = false)
    {
        $controller = $this->getController();
        if (! $controller || ! method_exists($controller, 'plugin')) {
            throw new DomainException(
                'Redirect plugin requires a controller that defines the plugin() method'
            );
        }

        $urlPlugin = $controller->plugin('url');

        if (is_scalar($options)) {
            $url = $urlPlugin->fromRoute($route, $params, $options);
        } else {
            $url = $urlPlugin->fromRoute($route, $params, $options, $reuseMatchedParams);
        }

        return $this->toUrl($url);
    }

    /**
     * Generate redirect response based on given URL
     *
     * @param  string $url
     * @return Response
     */
    public function toUrl($url)
    {
        $response = $this->getResponse();
        $response->getHeaders()->addHeaderLine('Location', $url);
        $response->setStatusCode(302);
        return $response;
    }

    /**
     * Refresh to current route
     *
     * @return Response
     */
    public function refresh()
    {
        return $this->toRoute(null, [], [], true);
    }

    /**
     * Get the response
     *
     * @return Response
     * @throws Exception\DomainException if unable to find response
     */
    protected function getResponse()
    {
        if ($this->response) {
            return $this->response;
        }

        $event    = $this->getEvent();
        $response = $event->getResponse();
        if (! $response instanceof Response) {
            throw new DomainException('Redirect plugin requires event compose a response');
        }
        $this->response = $response;
        return $this->response;
    }

    /**
     * Get the event
     *
     * @return MvcEvent
     * @throws Exception\DomainException if unable to find event
     */
    protected function getEvent()
    {
        if ($this->event) {
            return $this->event;
        }

        $controller = $this->getController();
        if (! $controller instanceof InjectApplicationEventInterface) {
            throw new DomainException(
                'Redirect plugin requires a controller that implements InjectApplicationEventInterface'
            );
        }

        $event = $controller->getEvent();
        if (! $event instanceof MvcEvent) {
            $params = $event->getParams();
            $event  = new MvcEvent();
            $event->setParams($params);
        }
        $this->event = $event;

        return $this->event;
    }
}