<?php

namespace WorkflowBundle\Controller;

use Base\AdminBundle\Controller\CRUDController as BaseCRUDController;
use Doctrine\Common\Inflector\Inflector;
use Symfony\Component\HttpFoundation\RedirectResponse;
use Symfony\Component\HttpFoundation\Response;
use Symfony\Component\HttpKernel\Exception\NotFoundHttpException;
use Sonata\AdminBundle\Datagrid\ProxyQueryInterface;
use Symfony\Component\HttpFoundation\File\Exception\AccessDeniedException;

class CRUDController extends BaseCRUDController
{

    /**
     * Batch action.
     *
     * @return Response|RedirectResponse
     *
     * @throws NotFoundHttpException If the HTTP method is not POST
     * @throws \RuntimeException     If the batch action is not defined
     */
    public function batchAction()
    {
        $request = $this->getRequest();
        $restMethod = $this->getRestMethod();

        if ('POST' !== $restMethod) {
            throw $this->createNotFoundException(sprintf('Invalid request type "%s", POST expected', $restMethod));
        }

        // check the csrf token
        $this->validateCsrfToken('sonata.batch');

        $confirmation = $request->get('confirmation', false);

        if ($data = json_decode($request->get('data'), true)) {
            $action = $data['action'];
            $idx = $data['idx'];
            $allElements = $data['all_elements'];
            $request->request->replace(array_merge($request->request->all(), $data));
        } else {
            $request->request->set('idx', $request->get('idx', array()));
            $request->request->set('all_elements', $request->get('all_elements', false));

            $action = $request->get('action');
            $idx = $request->get('idx');
            $allElements = $request->get('all_elements');
            $data = $request->request->all();

            unset($data['_sonata_csrf_token']);
        }

        // NEXT_MAJOR: Remove reflection check.
        $reflector = new \ReflectionMethod($this->admin, 'getBatchActions');
        if ($reflector->getDeclaringClass()->getName() === get_class($this->admin)) {
            @trigger_error('Override Sonata\AdminBundle\Admin\AbstractAdmin::getBatchActions method'
                            . ' is deprecated since version 3.2.'
                            . ' Use Sonata\AdminBundle\Admin\AbstractAdmin::configureBatchActions instead.'
                            . ' The method will be final in 4.0.', E_USER_DEPRECATED
            );
        }
        $batchActions = $this->admin->getBatchActions();
        if (!array_key_exists($action, $batchActions)) {
            throw new \RuntimeException(sprintf('The `%s` batch action is not defined', $action));
        }

        $camelizedAction = Inflector::classify($action);
        $isRelevantAction = sprintf('batchAction%sIsRelevant', $camelizedAction);

        if (method_exists($this, $isRelevantAction)) {
            $nonRelevantMessage = call_user_func(array($this, $isRelevantAction), $idx, $allElements, $request);
        } else {
            $nonRelevantMessage = count($idx) != 0 || $allElements; // at least one item is selected
        }

        if (!$nonRelevantMessage) { // default non relevant message (if false of null)
            $nonRelevantMessage = 'flash_batch_empty';
        }

        $datagrid = $this->admin->getDatagrid();
        $datagrid->buildPager();

        if (true !== $nonRelevantMessage) {
            $this->addFlash('sonata_flash_info', $nonRelevantMessage);

            return new RedirectResponse(
                    $this->admin->generateUrl(
                            'list', array('filter' => $this->admin->getFilterParameters())
                    )
            );
        }

        $askConfirmation = isset($batchActions[$action]['ask_confirmation']) ?
                $batchActions[$action]['ask_confirmation'] :
                true;

        if ($askConfirmation && $confirmation != 'ok') {
            $actionLabel = $batchActions[$action]['label'];
            $batchTranslationDomain = isset($batchActions[$action]['translation_domain']) ?
                    $batchActions[$action]['translation_domain'] :
                    $this->admin->getTranslationDomain();

            $formView = $datagrid->getForm()->createView();
            $this->setFormTheme($formView, $this->admin->getFilterTheme());

            return $this->render($this->admin->getTemplate('batch_confirmation'), array(
                        'action' => 'list',
                        'action_label' => $actionLabel,
                        'batch_translation_domain' => $batchTranslationDomain,
                        'datagrid' => $datagrid,
                        'form' => $formView,
                        'data' => $data,
                        'csrf_token' => $this->getCsrfToken('sonata.batch'),
                            ), null);
        }

        $workflowBatchAction = isset($batchActions[$action]['workflow']) ?: false;

        // execute the action, batchActionXxxxx
        $finalAction = sprintf('batchAction%s', $camelizedAction);
        if (!is_callable(array($this, $finalAction)) && !$workflowBatchAction) {
            throw new \RuntimeException(sprintf('A `%s::%s` method must be callable', get_class($this), $finalAction));
        }

        $query = $datagrid->getQuery();

        $query->setFirstResult(null);
        $query->setMaxResults(null);

        $this->allElementsBatch = $allElements;
        $this->admin->preBatchAction($action, $query, $idx, $allElements);

        if (count($idx) > 0) {
            $this->admin->getModelManager()->addIdentifiersToQuery($this->admin->getClass(), $query, $idx);
        } elseif (!$allElements) {
            $query = null;
        }

        if ($workflowBatchAction) {
            return $this->runWorkflowBatchAction($batchActions[$action]['workflow'], $query);
        }

        return call_user_func(array($this, $finalAction), $query, $request);
    }

    /**
     * @param array $workflow
     * @param ProxyQueryInterface $selectedModelQuery
     * 
     * @return RedirectResponse
     */
    public function runWorkflowBatchAction($workflow, ProxyQueryInterface $selectedModelQuery)
    {
        if ($this->admin->isGranted('EDIT') === false || $this->admin->isGranted('DELETE') === false) {
            throw new AccessDeniedException();
        }
        $session = $this->get('session')->getFlashBag();
        $translator = $this->get('translator');
        try {
            $workflowRegistry = $this->get('workflow.registry');
            $em = $this->get('doctrine.orm.entity_manager');
            
            $selectedModels = $selectedModelQuery->execute();
            foreach ($selectedModels as $selectedModel) {
                if ($workflowRegistry->get($selectedModel, $workflow['name'])->can($selectedModel, $workflow['transition'])) {
                    $workflowName = "{$selectedModel->getWorkflowType()}.{$selectedModel->getWorkflowName()}";
                    $this->get($workflowName)->apply($selectedModel, $workflow['transition']);
                    
                    $em->persist($selectedModel);
                    $em->flush($selectedModel);
                }
            }
            $session->add('sonata_flash_success', $translator->trans('flash_workflow_batch_success', array(), 'WorkflowBundle'));
        } catch (\Exception $e) {
            $session->add('sonata_flash_error', $translator->trans('flash_workflow_batch_error', array(), 'WorkflowBundle'));
            $session->add('sonata_flash_error', $e->getMessage());
        }

        return new RedirectResponse($this->admin->generateUrl('list', array('filter' => $this->admin->getFilterParameters())));
    }

}