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<?php

namespace IlluminateFoundationHttp;

use IlluminateHttpRequest;
use IlluminateHttpResponse;
use IlluminateHttpJsonResponse;
use IlluminateRoutingRedirector;
use IlluminateContainerContainer;
use IlluminateContractsValidationValidator;
use IlluminateHttpExceptionHttpResponseException;
use IlluminateValidationValidatesWhenResolvedTrait;
use IlluminateContractsValidationValidatesWhenResolved;
use IlluminateContractsValidationFactory as ValidationFactory;

class FormRequest extends Request implements ValidatesWhenResolved
{
    use ValidatesWhenResolvedTrait;

    /**
     * The container instance.
     *
     * @var IlluminateContainerContainer
     */
    protected $container;

    /**
     * The redirector instance.
     *
     * @var IlluminateRoutingRedirector
     */
    protected $redirector;

    /**
     * The URI to redirect to if validation fails.
     *
     * @var string
     */
    protected $redirect;

    /**
     * The route to redirect to if validation fails.
     *
     * @var string
     */
    protected $redirectRoute;

    /**
     * The controller action to redirect to if validation fails.
     *
     * @var string
     */
    protected $redirectAction;

    /**
     * The key to be used for the view error bag.
     *
     * @var string
     */
    protected $errorBag = 'default';

    /**
     * The input keys that should not be flashed on redirect.
     *
     * @var array
     */
    protected $dontFlash = ['password', 'password_confirmation'];

    /**
     * Get the validator instance for the request.
     *
     * @return IlluminateContractsValidationValidator
     */
    protected function getValidatorInstance()
    {
        $factory = $this->container->make(ValidationFactory::class);

        if (method_exists($this, 'validator')) {
            return $this->container->call([$this, 'validator'], compact('factory'));
        }

        return $factory->make(
            $this->validationData(), $this->container->call([$this, 'rules']), $this->messages(), $this->attributes()
        );
    }

    /**
     * Get data to be validated from the request.
     *
     * @return array
     */
    protected function validationData()
    {
        return $this->all();
    }

    /**
     * Handle a failed validation attempt.
     *
     * @param  IlluminateContractsValidationValidator  $validator
     * @return void
     *
     * @throws IlluminateHttpExceptionHttpResponseException
     */
    protected function failedValidation(Validator $validator)
    {
        throw new HttpResponseException($this->response(
            $this->formatErrors($validator)
        ));
    }

    /**
     * Determine if the request passes the authorization check.
     *
     * @return bool
     */
    protected function passesAuthorization()
    {
        if (method_exists($this, 'authorize')) {
            return $this->container->call([$this, 'authorize']);
        }

        return false;
    }

    /**
     * Handle a failed authorization attempt.
     *
     * @return void
     *
     * @throws IlluminateHttpExceptionHttpResponseException
     */
    protected function failedAuthorization()
    {
        throw new HttpResponseException($this->forbiddenResponse());
    }

    /**
     * Get the proper failed validation response for the request.
     *
     * @param  array  $errors
     * @return SymfonyComponentHttpFoundationResponse
     */
    public function response(array $errors)
    {
        if (($this->ajax() && ! $this->pjax()) || $this->wantsJson()) {
            return new JsonResponse($errors, 422);
        }

        return $this->redirector->to($this->getRedirectUrl())
                                        ->withInput($this->except($this->dontFlash))
                                        ->withErrors($errors, $this->errorBag);
    }

    /**
     * Get the response for a forbidden operation.
     *
     * @return IlluminateHttpResponse
     */
    public function forbiddenResponse()
    {
        return new Response('Forbidden', 403);
    }

    /**
     * Format the errors from the given Validator instance.
     *
     * @param  IlluminateContractsValidationValidator  $validator
     * @return array
     */
    protected function formatErrors(Validator $validator)
    {
        return $validator->getMessageBag()->toArray();
    }

    /**
     * Get the URL to redirect to on a validation error.
     *
     * @return string
     */
    protected function getRedirectUrl()
    {
        $url = $this->redirector->getUrlGenerator();

        if ($this->redirect) {
            return $url->to($this->redirect);
        } elseif ($this->redirectRoute) {
            return $url->route($this->redirectRoute);
        } elseif ($this->redirectAction) {
            return $url->action($this->redirectAction);
        }

        return $url->previous();
    }

    /**
     * Set the Redirector instance.
     *
     * @param  IlluminateRoutingRedirector  $redirector
     * @return $this
     */
    public function setRedirector(Redirector $redirector)
    {
        $this->redirector = $redirector;

        return $this;
    }

    /**
     * Set the container implementation.
     *
     * @param  IlluminateContainerContainer  $container
     * @return $this
     */
    public function setContainer(Container $container)
    {
        $this->container = $container;

        return $this;
    }

    /**
     * Get custom messages for validator errors.
     *
     * @return array
     */
    public function messages()
    {
        return [];
    }

    /**
     * Get custom attributes for validator errors.
     *
     * @return array
     */
    public function attributes()
    {
        return [];
    }
}