<?php

/**
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License
 * as published by the Free Software Foundation; under version 2
 * of the License (non-upgradable).
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
 *
 * Copyright (c) 2016 (original work) Open Assessment Technologies SA;
 *
 */

namespace oat\qtiItemPci\controller;

use oat\qtiItemPci\model\PciModel;
use oat\qtiItemPci\model\IMSPciModel;
use oat\taoQtiItem\model\portableElement\exception\PortableElementException;
use \tao_actions_CommonModule;

class PciLoader extends tao_actions_CommonModule
{
    /**
     * Load latest PCI runtimes
     */
    public function load()
    {
        $customInteractionDirs = \common_ext_ExtensionsManager::singleton()->getExtensionById('taoQtiItem')->getConfig('debug_portable_element');

        try {
            $this->returnJson(array_reduce($this->getRegistries(), function ($acc, $registry) use ($customInteractionDirs) {
                $latestRuntimes = $registry->getLatestRuntimes();
                if (is_array($customInteractionDirs)) {
                    foreach ($latestRuntimes as $id => &$versions) {
                        if (isset($customInteractionDirs[$id])) {
                            //add option to load from source (as opposed to from the default min.js files)
                            foreach ($versions as &$version) {
                                // IMS PCI
                                if (isset($version['model']) && $version['model'] == 'IMSPCI') {
                                    $modules = (isset($version['runtime']) && isset($version['runtime']['modules'])) ? $version['runtime']['modules'] : [];
                                    $src = (isset($version['runtime']) && isset($version['runtime']['src'])) ? $version['runtime']['src'] : [];

                                    // in case of a TAO bundled PCI (= we have a "src" entry),
                                    // we redirect the module to the entry point of the PCI instead of its minified version
                                    if (count($src) > 0) {
                                        foreach ($modules as $moduleKey => &$allModulesFiles) {
                                            if (strpos($moduleKey, '.min') == (strlen($moduleKey) - strlen('.min'))) {
                                                foreach ($allModulesFiles as &$moduleFile) {
                                                    $moduleFile = str_replace('.min.js', '.js', $moduleFile);
                                                }
                                            }
                                        }
                                    }

                                    if (isset($version['runtime']) && isset($version['runtime']['modules'])) {
                                        $version['runtime']['modules'] = $modules;
                                    }
                                    if (isset($version['creator']) && isset($version['creator']['src'])) {
                                        //the first entry of the src array is always the entrypoint (PCI hook)
                                        $version['creator']['hook'] = array_shift($version['creator']['src']);
                                        $version['creator']['modules'] = $version['creator']['src'];
                                        unset($version['creator']['src']);
                                    }

                                    // TAO PCI
                                } else {
                                    if (isset($version['runtime']) && isset($version['runtime']['src'])) {
                                        $version['runtime']['libraries'] = $version['runtime']['src'];
                                        unset($version['runtime']['hook']);
                                        unset($version['runtime']['src']);
                                    }
                                    if (isset($version['creator']) && isset($version['creator']['src'])) {
                                        //the first entry of the src array is always the entrypoint (PCI hook)
                                        $version['creator']['hook'] = array_shift($version['creator']['src']);
                                        $version['creator']['modules'] = $version['creator']['src'];
                                        unset($version['creator']['src']);
                                    }
                                }
                            }
                        }
                    }
                }
                return array_merge($acc, $latestRuntimes);
            }, []));
        } catch (PortableElementException $e) {
            $this->returnJson($e->getMessage(), 500);
        }
    }

    protected function getRegistries()
    {
        return [(new PciModel())->getRegistry(), (new IMSPciModel())->getRegistry()];
    }
}