Proyectos de Subversion LeadersLinked - Backend

<?php

declare(strict_types=1);

namespace LeadersLinked\Controller;

use Laminas\Db\Adapter\AdapterInterface;

use Laminas\Mvc\Controller\AbstractActionController;

use Laminas\Log\LoggerInterface;

use Laminas\View\Model\ViewModel;

use Laminas\View\Model\JsonModel;

use LeadersLinked\Library\Functions;

use LeadersLinked\Hydrator\ObjectPropertyHydrator;

use LeadersLinked\Library\Image;

use LeadersLinked\Mapper\MicrolearningTopicMapper;

use LeadersLinked\Mapper\MicrolearningCapsuleMapper;

use LeadersLinked\Model\MicrolearningCapsule;

use LeadersLinked\Form\Microlearning\CapsuleAddForm;

use LeadersLinked\Form\Microlearning\CapsuleEditForm;

use LeadersLinked\Mapper\MicrolearningCapsuleUserMapper;

use LeadersLinked\Form\Microlearning\CapsuleForm;

use LeadersLinked\Mapper\QueryMapper;

use LeadersLinked\Mapper\UserMapper;

use LeadersLinked\Model\MicrolearningCapsuleUser;

use LeadersLinked\Library\Storage;

class MicrolearningCapsuleController extends AbstractActionController

{

    /**

     *

     * @var \Laminas\Db\Adapter\AdapterInterface

     */

    private $adapter;

    /**

     *

     * @var \LeadersLinked\Cache\CacheInterface

     */

    private $cache;

    /**

     *

     * @var \Laminas\Log\LoggerInterface

     */

    private $logger;

    /**

     *

     * @var array

     */

    private $config;

    /**

     *

     * @var \Laminas\Mvc\I18n\Translator

     */

    private $translator;

    /**

     *

     * @param \Laminas\Db\Adapter\AdapterInterface $adapter

     * @param \LeadersLinked\Cache\CacheInterface $cache

     * @param \Laminas\Log\LoggerInterface LoggerInterface $logger

     * @param array $config

     * @param \Laminas\Mvc\I18n\Translator $translator

     */

    public function __construct($adapter, $cache, $logger, $config, $translator)

    {

        $this->adapter      = $adapter;

        $this->cache        = $cache;

        $this->logger       = $logger;

        $this->config       = $config;

        $this->translator   = $translator;

    }

    /**

     * Main action for listing capsules

     * @return \Laminas\View\Model\ViewModel|\Laminas\View\Model\JsonModel

     */

    public function indexAction()

    {

        try {

            $request = $this->getRequest();

            if (!$request->isGet()) {

                return $this->createErrorResponse('ERROR_METHOD_NOT_ALLOWED');

            }

            $currentUserPlugin = $this->plugin('currentUserPlugin');

            $currentUser = $currentUserPlugin->getUser();

            $currentCompany = $currentUserPlugin->getCompany();

            if ($this->isJsonRequest($request)) {

                return $this->handleJsonRequest($currentUser, $currentCompany);

            }

            return $this->handleHtmlRequest($currentCompany);

        } catch (\Exception $e) {

            $this->logger->err('Error in indexAction: ' . $e->getMessage());

            return $this->createErrorResponse('ERROR_INTERNAL_SERVER_ERROR');

        }

    }

    /**

     * Check if request is JSON

     * @param \Laminas\Http\Request $request

     * @return bool

     */

    private function isJsonRequest($request)

    {

        $headers = $request->getHeaders();

        if (!$headers->has('Accept')) {

            return false;

        }

        $accept = $headers->get('Accept');

        $prioritized = $accept->getPrioritized();

        foreach ($prioritized as $value) {

            if (strpos(trim($value->getRaw()), 'json') !== false) {

                return true;

            }

        }

        return false;

    }

    /**

     * Handle JSON request for datatable

     * @param \LeadersLinked\Model\User $currentUser

     * @param \LeadersLinked\Model\Company $currentCompany

     * @return \Laminas\View\Model\JsonModel

     */

    private function handleJsonRequest($currentUser, $currentCompany)

    {

        try {

            // Set JSON content type header

            $this->getResponse()->getHeaders()->addHeaderLine('Content-Type', 'application/json');

            $search = $this->params()->fromQuery('search', []);

            $search = empty($search['value']) ? '' : Functions::sanitizeFilterString($search['value']);

            $recordsPerPage = intval($this->params()->fromQuery('length', 10), 10);

            $page = (intval($this->params()->fromQuery('start', 1), 10) / $recordsPerPage) + 1;

            $order = $this->params()->fromQuery('order', []);

            $orderField = empty($order[0]['column']) ? 99 : intval($order[0]['column'], 10);

            $orderDirection = empty($order[0]['dir']) ? 'ASC' : strtoupper(Functions::sanitizeFilterString($order[0]['dir']));

            $fields = ['name'];

            $orderField = isset($fields[$orderField]) ? $fields[$orderField] : 'name';

            if (!in_array($orderDirection, ['ASC', 'DESC'])) {

                $orderDirection = 'ASC';

            }

            $acl = $this->getEvent()->getViewModel()->getVariable('acl');

            $permissions = $this->getUserPermissions($acl, $currentUser);

            $capsuleMapper = MicrolearningCapsuleMapper::getInstance($this->adapter);

            $paginator = $capsuleMapper->fetchAllDataTableByCompanyId(

                $currentCompany->id,

                $search,

                $page,

                $recordsPerPage,

                $orderField,

                $orderDirection

            );

            $items = $this->prepareCapsuleItems($paginator->getCurrentItems(), $currentCompany, $permissions);

            $response = [

                'success' => true,

                'data' => [

                    'link_add' => $permissions['allowAdd'] ? $this->url()->fromRoute('microlearning/content/capsules/add') : '',

                    'items' => $items,

                    'total' => $paginator->getTotalItemCount(),

                ]

            ];

            return new JsonModel($response);

        } catch (\Exception $e) {

            $this->logger->err('Error in handleJsonRequest: ' . $e->getMessage());

            $this->getResponse()->getHeaders()->addHeaderLine('Content-Type', 'application/json');

            return $this->createErrorResponse('ERROR_INTERNAL_SERVER_ERROR');

        }

    }

    /**

     * Get user permissions for capsule actions

     * @param \Laminas\Permissions\Acl\Acl $acl

     * @param \LeadersLinked\Model\User $currentUser

     * @return array

     */

    private function getUserPermissions($acl, $currentUser)

    {

        return [

            'allowAdd' => $acl->isAllowed($currentUser->usertype_id, 'microlearning/content/capsules/add'),

            'allowEdit' => $acl->isAllowed($currentUser->usertype_id, 'microlearning/content/capsules/edit'),

            'allowDelete' => $acl->isAllowed($currentUser->usertype_id, 'microlearning/content/capsules/delete'),

            'allowUsers' => $acl->isAllowed($currentUser->usertype_id, 'microlearning/content/capsules/users')

        ];

    }

    /**

     * Prepare capsule items for datatable

     * @param array $records

     * @param \LeadersLinked\Model\Company $currentCompany

     * @param array $permissions

     * @return array

     */

    private function prepareCapsuleItems($records, $currentCompany, $permissions)

    {

        $items = [];

        $microlearningCapsuleUserMapper = MicrolearningCapsuleUserMapper::getInstance($this->adapter);

        $storage = Storage::getInstance($this->config, $this->adapter);

        $path = $storage->getPathMicrolearningCapsule();

        foreach ($records as $record) {

            $totalUsers = $microlearningCapsuleUserMapper->fetchCountUsersByCompanyIdAndCapsuleId($currentCompany->id, $record->id);

            $totalUsersActive = $microlearningCapsuleUserMapper->fetchCountUsersActiveByCompanyIdAndCapsuleId($currentCompany->id, $record->id);

            $status = $this->getCapsuleStatus($record->status);

            $privacy = $this->getCapsulePrivacy($record->privacy);

            $type = $this->getCapsuleType($record->type);

            $params = ['capsule_uuid' => $record->uuid];

            $items[] = [

                'name' => $record->name,

                'details' => [

                    'status' => $status,

                    'privacy' => $privacy,

                    'type' => $type,

                    'cost' => $record->cost,

                    'total_users' => $totalUsers,

                    'total_users_active' => $totalUsersActive,

                ],

                'images' => [

                    'image' => $storage->getGenericImage($path, $record->uuid, $record->image),

                    'marketplace' => $record->marketplace ? $storage->getGenericImage($path, $record->uuid, $record->marketplace) : '',

                ],

                'actions' => $this->prepareCapsuleActions($record, $permissions, $totalUsers, $totalUsersActive)

            ];

        }

        return $items;

    }

    /**

     * Get capsule status label

     * @param int $status

     * @return string

     */

    private function getCapsuleStatus($status)

    {

        switch ($status) {

            case MicrolearningCapsule::STATUS_ACTIVE:

                return 'LABEL_ACTIVE';

            case MicrolearningCapsule::STATUS_INACTIVE:

                return 'LABEL_INACTIVE';

            default:

                return '';

        }

    }

    /**

     * Get capsule privacy label

     * @param int $privacy

     * @return string

     */

    private function getCapsulePrivacy($privacy)

    {

        switch ($privacy) {

            case MicrolearningCapsule::PRIVACY_PUBLIC:

                return 'LABEL_PUBLIC';

            case MicrolearningCapsule::PRIVACY_PRIVATE:

                return 'LABEL_PRIVATE';

            default:

                return '';

        }

    }

    /**

     * Get capsule type label

     * @param int $type

     * @return string

     */

    private function getCapsuleType($type)

    {

        switch ($type) {

            case MicrolearningCapsule::TYPE_FREE:

                return 'LABEL_FREE';

            case MicrolearningCapsule::TYPE_PRIVATE:

                return 'LABEL_PRIVATE';

            case MicrolearningCapsule::TYPE_SELLING:

                return 'LABEL_SELLING';

            default:

                return '';

        }

    }

    /**

     * Prepare capsule actions

     * @param \LeadersLinked\Model\MicrolearningCapsule $record

     * @param array $permissions

     * @param int $totalUsers

     * @param int $totalUsersActive

     * @return array

     */

    private function prepareCapsuleActions($record, $permissions, $totalUsers, $totalUsersActive)

    {

        $params = ['capsule_uuid' => $record->uuid];

        return [

            'link_edit' => $permissions['allowEdit'] ? $this->url()->fromRoute('microlearning/content/capsules/edit', $params) : '',

            'link_delete' => $permissions['allowDelete'] ? $this->url()->fromRoute('microlearning/content/capsules/delete', $params) : '',

            'link_total_users' => $permissions['allowUsers'] && $totalUsers ?

                $this->url()->fromRoute('microlearning/content/capsules/users', [

                    'capsule_uuid' => $record->uuid,

                    'type' => 'all'

                ]) : '',

            'link_total_users_actives' => $permissions['allowUsers'] && $totalUsersActive ?

                $this->url()->fromRoute('microlearning/content/capsules/users', [

                    'capsule_uuid' => $record->uuid,

                    'type' => 'active'

                ]) : ''

        ];

    }

    /**

     * Handle HTML request for view

     * @param \LeadersLinked\Model\Company $currentCompany

     * @return \Laminas\View\Model\ViewModel

     */

    private function handleHtmlRequest($currentCompany)

    {

        $imageSize = $this->config['leaderslinked.image_sizes.microlearning_image_upload'];

        $marketplaceSize = $this->config['leaderslinked.image_sizes.marketplace'];

        $formAdd = new CapsuleAddForm($currentCompany->internal);

        $formEdit = new CapsuleEditForm($currentCompany->internal);

        $this->layout()->setTemplate('layout/layout-backend.phtml');

        $viewModel = new ViewModel();

        $viewModel->setTemplate('leaders-linked/microlearning-capsules/index.phtml');

        $viewModel->setVariables([

            'formAdd' => $formAdd,

            'formEdit' => $formEdit,

            'company_uuid' => $currentCompany->uuid,

            'image_size' => $imageSize,

            'marketplace_size' => $marketplaceSize,

        ]);

        return $viewModel;

    }

    /**

     * Create error response

     * @param string $message

     * @return \Laminas\View\Model\JsonModel

     */

    private function createErrorResponse($message)

    {

        return new JsonModel([

            'success' => false,

            'data' => $message

        ]);

    }

    public function addAction()

    {

        $currentUserPlugin  = $this->plugin('currentUserPlugin');

        $currentUser        = $currentUserPlugin->getUser();

        $currentCompany     = $currentUserPlugin->getCompany();

        $request    = $this->getRequest();

        if(!$request->isPost()) {

            $data = [

                'success' => false,

                'data' => 'ERROR_METHOD_NOT_ALLOWED'

            ];

            return new JsonModel($data);

        }

        $form = new  CapsuleAddForm($currentCompany->internal);

        $dataPost = array_merge($request->getPost()->toArray(), $request->getFiles()->toArray());

        $form->setData($dataPost);

        if(!$form->isValid()) {

            $messages = [];

            $form_messages = (array) $form->getMessages();

            foreach($form_messages  as $fieldname => $field_messages)

            {

                $messages[$fieldname] = array_values($field_messages);

            }

            return new JsonModel([

                'success'   => false,

                'data'   => $messages

            ]);

        }

        $dataPost = (array) $form->getData();

        $hydrator = new ObjectPropertyHydrator();

        $capsule = new MicrolearningCapsule();

        $hydrator->hydrate($dataPost, $capsule);

        $capsule->company_id = $currentCompany->id;

        $capsule->image = '';

        $capsule->marketplace = '';

        $capsuleMapper = MicrolearningCapsuleMapper::getInstance($this->adapter);

        if(!$capsuleMapper->insert($capsule)) {

            return new JsonModel([

                'success'   => false,

                'data'      => $capsuleMapper->getError()

            ]);

        }

        $capsule = $capsuleMapper->fetchOne($capsule->id);

        $storage = Storage::getInstance($this->config, $this->adapter);

        $storage->setFiles($request->getFiles()->toArray());

        if (!$storage->setCurrentFilename('file')) {

            return new JsonModel([

                'success'   => false,

                'data'      => 'ERROR_UPLOAD_IMAGE'

            ]);

        }

        $target_size = $this->config['leaderslinked.image_sizes.microlearning_image_size'];

        list($target_width, $target_height) = explode('x', $target_size);

        $source_filename = $storage->getTmpFilename();

        $filename = 'capsule-' . uniqid() . '.jpg';

        $target_filename = $storage->composePathToFilename(

            Storage::TYPE_MICROLEARNING_CAPSULE,

            $capsule->uuid,

            $filename

        );

        if (!$storage->uploadImageCrop($source_filename, $target_filename, $target_width, $target_height)) {

            return new JsonModel([

                'success'   => false,

                'data'      => 'ERROR_UPLOAD_IMAGE'

            ]);

        }

        if(!$storage->setCurrentFilename('marketplace')) {

            return new JsonModel([

                'success'   => false,

                'data'      => 'ERROR_UPLOAD_IMAGE'

            ]);

        }

        $target_size = $this->config['leaderslinked.image_sizes.marketplace'];

        list($target_width, $target_height) = explode('x', $target_size);

        $marketplace_source_filename = $storage->getTmpFilename();

        $marketplace_filename = 'marketplace-' . uniqid() . '.jpg';

        $marketplace_target_filename = $storage->composePathToFilename(

            Storage::TYPE_MICROLEARNING_CAPSULE,

            $capsule->uuid,

            $marketplace_filename

        );

        if (!$storage->uploadImageCrop($marketplace_source_filename, $marketplace_target_filename, $target_width, $target_height)) {

            return new JsonModel([

                'success'   => false,

                'data'      => 'ERROR_UPLOAD_IMAGE'

            ]);

        }

        $capsule->marketplace = $marketplace_filename;

        $capsule->image = $filename;

        if(!$capsuleMapper->update($capsule)) {

            return new JsonModel([

                'success'   => false,

                'data'      => $capsuleMapper->getError()

            ]);

        }

        $this->logger->info('Se agrego la cápsula ' . $capsule->name, ['user_id' => $currentUser->id, 'ip' => Functions::getUserIP()]);

        return new JsonModel([

            'success'   => true,

            'data'   => 'LABEL_RECORD_ADDED'

        ]);

    }

    /**

     *

     * Borrar un perfil excepto el público

     * @return \Laminas\View\Model\JsonModel

     */

    public function deleteAction()

    {

        $currentUserPlugin = $this->plugin('currentUserPlugin');

        $currentUser    = $currentUserPlugin->getUser();

        $currentCompany = $currentUserPlugin->getCompany();

        $request        = $this->getRequest();

        $capsule_uuid   = $this->params()->fromRoute('capsule_uuid');

        $capsuleMapper = MicrolearningCapsuleMapper::getInstance($this->adapter);

        $capsule = $capsuleMapper->fetchOneByUuid($capsule_uuid);

        if(!$capsule) {

            return new JsonModel([

                'success'   => false,

                'data'   => 'ERROR_CAPSULE_NOT_FOUND'

            ]);

        }

        if($capsule->company_id != $currentCompany->id) {

            return new JsonModel([

                'success'   => false,

                'data'   => 'ERROR_UNAUTHORIZED'

            ]);

        }

        if($request->isPost()) {

            $result =  $capsuleMapper->delete($capsule);

            if($result) {

                $this->logger->info('Se borro la cápsula : ' .  $capsule->name, ['user_id' => $currentUser->id, 'ip' => Functions::getUserIP()]);

                $storage = Storage::getInstance($this->config, $this->adapter);

                $target_path = $storage->getPathMicrolearningCapsule();

                $storage->deleteFile($target_path, $capsule->uuid, $capsule->image);

                if($capsule->marketplace) {

                    $storage->deleteFile($target_path, $topic->uuid, $capsule->marketplace);

                }

                $data = [

                    'success' => true,

                    'data' => 'LABEL_RECORD_DELETED'

                ];

            } else {

                $data = [

                    'success'   => false,

                    'data'      => $capsuleMapper->getError()

                ];

                return new JsonModel($data);

            }

        } else {

            $data = [

                'success' => false,

                'data' => 'ERROR_METHOD_NOT_ALLOWED'

            ];

            return new JsonModel($data);

        }

        return new JsonModel($data);

    }

    public function editAction()

    {

        $currentUserPlugin = $this->plugin('currentUserPlugin');

        $currentUser    = $currentUserPlugin->getUser();

        $currentCompany = $currentUserPlugin->getCompany();

        $request    = $this->getRequest();

        $topic_uuid     = $this->params()->fromRoute('topic_uuid');

        $capsule_uuid   = $this->params()->fromRoute('capsule_uuid');

        $topicMapper = MicrolearningTopicMapper::getInstance($this->adapter);

        $topic = $topicMapper->fetchOneByUuid($topic_uuid);

        if(!$topic) {

            return new JsonModel([

                'success'   => false,

                'data'   => 'ERROR_TOPIC_NOT_FOUND'

            ]);

        }

        if($topic->company_id != $currentCompany->id) {

            return new JsonModel([

                'success'   => false,

                'data'   => 'ERROR_UNAUTHORIZED'

            ]);

        }

        $capsuleMapper = MicrolearningCapsuleMapper::getInstance($this->adapter);

        $capsule = $capsuleMapper->fetchOneByUuid($capsule_uuid);

        if(!$capsule) {

            return new JsonModel([

                'success'   => false,

                'data'   => 'ERROR_CAPSULE_NOT_FOUND'

            ]);

        }

        if($capsule->company_id != $currentCompany->id) {

            return new JsonModel([

                'success'   => false,

                'data'   => 'ERROR_UNAUTHORIZED'

            ]);

        }

        if($request->isGet()) {

            $storage = Storage::getInstance($this->config, $this->adapter);

            $path = $storage->getPathMicrolearningCapsule();

            $data = [

                'success' => true,

                'data' => [

                    'name' => $capsule->name,

                    'description' => $capsule->description,

                    'status' => $capsule->status,

                    'privacy' => $capsule->privacy,

                    'type' => $capsule->type,

                    'cost' => $capsule->cost,

                    'image' => $storage->getGenericImage($path, $capsule->uuid, $capsule->image),

                    'marketplace' => $capsule->marketplace ?  $storage->getGenericImage($path, $capsule->uuid, $capsule->marketplace) : '',

                ]

            ];

            return new JsonModel($data);

        }

        else if($request->isPost()) {

            $form = new  CapsuleEditForm($currentCompany->internal);

            $dataPost = array_merge($request->getPost()->toArray(), $request->getFiles()->toArray());

            $form->setData($dataPost);

            if($form->isValid()) {

                $dataPost = (array) $form->getData();

                $hydrator = new ObjectPropertyHydrator();

                $hydrator->hydrate($dataPost, $capsule);

                $capsule->image = null;

                $capsule->marketplace = null;

                $image = Image::getInstance($this->config);

                $target_path = $image->getStorage()->getPathMicrolearningCapsule();

                if($capsuleMapper->update($capsule)) {

                    $capsule = $capsuleMapper->fetchOne($capsule->id);

                    $files = $this->getRequest()->getFiles()->toArray();

                    if(isset($files['file']) && empty($files['file']['error'])) {

                        $tmp_filename  = $files['file']['tmp_name'];

                        // $filename      = \LeadersLinked\Library\Functions::normalizeStringFilename($files['file']['name']);

                        try {

                            if($capsule->image) {

                                if(!$image->getStorage()->deleteFile($target_path, $capsule->uuid, $capsule->image)) {

                                    return new JsonModel([

                                        'success'   => false,

                                        'data'   =>  'ERROR_THERE_WAS_AN_ERROR'

                                    ]);

                                }

                            }

                            list($target_width, $target_height) = explode('x', $this->config['leaderslinked.image_sizes.microlearning_image_size']);

                            $filename = 'capsule-' .uniqid() . '.jpg';

                            $crop_to_dimensions = false;

                            $unlink_source = true;

                            if($image->uploadProcessChangeSize($tmp_filename, $target_path, $capsule->uuid, $filename, $target_width, $target_height, $crop_to_dimensions, $unlink_source)) {

                                $capsule->image = $filename;

                                $capsuleMapper->update($capsule);

                            }

                        } catch(\Throwable $e) {

                            error_log($e->getTraceAsString());

                        }

                    }

                    if(isset($files['marketplace']) && empty($files['marketplace']['error'])) {

                        $tmp_filename  = $files['marketplace']['tmp_name'];

                        // $filename      = \LeadersLinked\Library\Functions::normalizeStringFilename($files['file']['name']);

                        try {

                            if($capsule->marketplace) {

                                if(!$image->getStorage()->deleteFile($target_path, $capsule->uuid, $capsule->marketplace)) {

                                    return new JsonModel([

                                        'success'   => false,

                                        'data'   =>  'ERROR_THERE_WAS_AN_ERROR'

                                    ]);

                                }

                            }

                            list($target_width, $target_height) = explode('x', $this->config['leaderslinked.image_sizes.marketplace']);

                            $filename = 'marketplace-' .uniqid() . '.jpg';

                            $crop_to_dimensions = false;

                            $unlink_source = true;

                            if($image->uploadProcessChangeSize($tmp_filename, $target_path, $capsule->uuid, $filename, $target_width, $target_height, $crop_to_dimensions, $unlink_source)) {

                                $capsule->marketplace = $filename;

                                $capsuleMapper->update($capsule);

                            }

                        } catch(\Throwable $e) {

                            error_log($e->getTraceAsString());

                        }

                    }

                    $this->logger->info('Se edito la cápsula ' . $capsule->name, ['user_id' => $currentUser->id, 'ip' => Functions::getUserIP()]);

                    $data = [

                        'success'   => true,

                        'data'   => 'LABEL_RECORD_UPDATED'

                    ];

                } else {

                    $data = [

                        'success'   => false,

                        'data'      => $capsuleMapper->getError()

                    ];

                }

                return new JsonModel($data);

            } else {

                $messages = [];

                $form_messages = (array) $form->getMessages();

                foreach($form_messages  as $fieldname => $field_messages)

                {

                    $messages[$fieldname] = array_values($field_messages);

                }

                return new JsonModel([

                    'success'   => false,

                    'data'   => $messages

                ]);

            }

        } else {

            $data = [

                'success' => false,

                'data' => 'ERROR_METHOD_NOT_ALLOWED'

            ];

            return new JsonModel($data);

        }

        return new JsonModel($data);

    }

    public function usersAction()

    {

        $currentUserPlugin = $this->plugin('currentUserPlugin');

        $currentUser    = $currentUserPlugin->getUser();

        $currentCompany = $currentUserPlugin->getCompany();

        $request        = $this->getRequest();

        $topic_uuid     = $this->params()->fromRoute('topic_uuid');

        $capsule_uuid   = $this->params()->fromRoute('capsule_uuid');

        $type           = $this->params()->fromRoute('type');

        $capsuleMapper = MicrolearningCapsuleMapper::getInstance($this->adapter);

        $capsule = $capsuleMapper->fetchOneByUuid($capsule_uuid);

        if(!$capsule) {

            return new JsonModel([

                'success'   => false,

                'data'   => 'ERROR_CAPSULE_NOT_FOUND'

            ]);

        }

        if($capsule->company_id != $currentCompany->id) {

            return new JsonModel([

                'success'   => false,

                'data'   => 'ERROR_UNAUTHORIZED'

            ]);

        }

        if($request->isGet()) {

            $queryMapper = QueryMapper::getInstance($this->adapter);

            $sql = $queryMapper->getSql();

            $select = $sql->select();

            $select->columns(['access', 'paid_from', 'paid_to', 'added_on']);

            $select->from(['tb1' => MicrolearningCapsuleUserMapper::_TABLE] );

            $select->join(['tb2' => UserMapper::_TABLE], 'tb1.user_id = tb2.id', ['uuid', 'first_name', 'last_name', 'email']);

            $select->where->equalTo('tb1.company_id', $capsule->company_id);

            $select->where->equalTo('tb1.capsule_id', $capsule->id);

            if($type == 'active') {

                $now = date('Y-m-d H:i:s');

                $select->where->nest->equalTo('access', MicrolearningCapsuleUser::ACCESS_UNLIMITED)->or->nest()

                ->equalTo('access', MicrolearningCapsuleUser::ACCESS_PAY_PERIOD)

                ->and->lessThanOrEqualTo('paid_from', $now)->and->greaterThanOrEqualTo('paid_to', $now )->unnest()->unnest();

            }

            $select->order(['first_name', 'last_name', 'email']);

            $records  = $queryMapper->fetchAll($select);

            $items = [ ];

            foreach($records as $record)

            {

                switch($record['access'])

                {

                    case MicrolearningCapsuleUser::ACCESS_UNLIMITED :

                        $details['access'] = 'LABEL_UNLIMIT';

                        break;

                    case MicrolearningCapsuleUser::ACCESS_REVOKE :

                        $details['access'] = 'LABEL_REVOKED';

                        break;

                    case MicrolearningCapsuleUser::ACCESS_PAY_PERIOD :

                        $dt_paid_from = \DateTime::createFromFormat('Y-m-d', $record['paid_from']);

                        $dt_paid_to = \DateTime::createFromFormat('Y-m-d', $record['paid_to']);

                        $details['access'] = 'LABEL_PAY_PERIOD';

                        $details['paid_from'] = $dt_paid_from->format('d/m/Y');

                        $details['paid_to'] = $dt_paid_to->format('d/m/Y');

                        break;

                    case MicrolearningCapsuleUser::ACCESS_SUPENDED :

                        $dt_paid_from = \DateTime::createFromFormat('Y-m-d', $record['paid_from']);

                        $dt_paid_to = \DateTime::createFromFormat('Y-m-d', $record['paid_to']);

                        $details['access'] = 'LABEL_SUSPENDED';

                        $details['paid_from'] = $dt_paid_from->format('d/m/Y');

                        $details['paid_to'] = $dt_paid_to->format('d/m/Y');

                        break;

                    case MicrolearningCapsuleUser::ACCESS_CANCELLED :

                        $dt_paid_from = \DateTime::createFromFormat('Y-m-d', $record['paid_from']);

                        $dt_paid_to = \DateTime::createFromFormat('Y-m-d', $record['paid_to']);

                        $details['access'] = 'LABEL_CANCELLED';

                        $details['paid_from'] = $dt_paid_from->format('d/m/Y');

                        $details['paid_to'] = $dt_paid_to->format('d/m/Y');

                        break;

                }

                $item = [

                    'first_name' => $record['first_name'],

                    'last_name' => $record['last_name'],

                    'email' => $record['email'],

                    'details' => $details,

                ];

                array_push($items, $item);

            }

            return new JsonModel([

                'success' => true,

                'data' => [

                    'topic' => $topic->name,

                    'capsule' => $capsule->name,

                    'items' => $items,

                ]

            ]);

        } else {

            $data = [

                'success' => false,

                'data' => 'ERROR_METHOD_NOT_ALLOWED'

            ];

            return new JsonModel($data);

        }

        return new JsonModel($data);

    }

}