<?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) 2008-2010 (original work) Deutsche Institut für Internationale Pädagogische Forschung (under the project TAO-TRANSFER);
 *               2009-2012 (update and modification) Public Research Centre Henri Tudor (under the project TAO-SUSTAIN & TAO-DEV);
 *
 */

/**
 * This container initialize the import form.
 *
 * @access public
 * @author Joel Bout, <joel.bout@tudor.lu>
 * @package tao

 */
class tao_actions_form_Import extends tao_helpers_form_FormContainer
{
    // --- ASSOCIATIONS ---


    // --- ATTRIBUTES ---

    private $importHandlers = [];

    /**
     * @var tao_helpers_form_Form
     */
    private $subForm = null;
    // --- OPERATIONS ---

    /**
     * Initialise the form for the given importHandlers
     *
     * @param tao_models_classes_import_ImportHandler $importHandler
     * @param array $availableHandlers
     * @param core_kernel_classes_Resource $class
     * @param array $options
     * @internal param array $importHandlers
     * @internal param tao_helpers_form_Form $subForm
     */
    public function __construct($importHandler, $availableHandlers, $class, $options = [])
    {
        $this->importHandlers = $availableHandlers;
        if (!is_null($importHandler)) {
            $this->subForm = $importHandler->getForm();
        }
        parent::__construct(
            [
            'importHandler' => get_class($importHandler),
            'classUri'      => $class->getUri(),
            'id'            => $class->getUri()
            ],
            $options
        );
    }

    /**
     * inits the import form
     *
     * @access public
     * @author Joel Bout, <joel.bout@tudor.lu>
     * @return mixed
     */
    public function initForm()
    {
        $this->form = tao_helpers_form_FormFactory::getForm('import');

        $this->form->setActions(is_null($this->subForm) ? [] : $this->subForm->getActions('top'), 'top');
        $this->form->setActions(is_null($this->subForm) ? [] : $this->subForm->getActions('bottom'), 'bottom');
    }

    /**
     * Inits the element to select the importhandler
     * and takes over the elements of the import form
     *
     * @access public
     * @author Joel Bout, <joel.bout@tudor.lu>
     * @return mixed
     */
    public function initElements()
    {
        //create the element to select the import format
        $formatElt = tao_helpers_form_FormFactory::getElement('importHandler', 'Radiobox');
        $formatElt->setDescription(__('Choose import format'));
        $formatElt->addValidator(tao_helpers_form_FormFactory::getValidator('NotEmpty')); // should never happen anyway
        $importHandlerOptions = [];
        foreach ($this->importHandlers as $importHandler) {
            $importHandlerOptions[get_class($importHandler)] = $importHandler->getLabel();
        }
        $formatElt->setOptions($importHandlerOptions);


        $classUriElt = tao_helpers_form_FormFactory::getElement('classUri', 'Hidden');
        //      $classUriElt->setValue($class->getUri());
        $this->form->addElement($classUriElt);

        $classUriElt = tao_helpers_form_FormFactory::getElement('id', 'Hidden');
        $this->form->addElement($classUriElt);

        $this->form->addElement($formatElt);

        if (!is_null($this->subForm)) {
            //          load dynamically the method regarding the selected format
            $this->form->setElements(array_merge($this->form->getElements(), $this->subForm->getElements()));
            foreach ($this->subForm->getGroups() as $key => $group) {
                $this->form->createGroup($key, $group['title'], $group['elements'], $group['options']);
            }
        }
    }
}