<?php
// {{{ICINGA_LICENSE_HEADER}}}
/**
* This file is part of Icinga 2 Web.
*
* Icinga 2 Web - Head for multiple monitoring backends.
* Copyright (C) 2013 Icinga Development Team
*
* 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; either version 2
* of the License, or (at your option) any later version.
*
* 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 2013 Icinga Development Team <info@icinga.org>
* @license   http://www.gnu.org/licenses/gpl-2.0.txt GPL, version 2
* @author    Icinga Development Team <info@icinga.org>
*/
// {{{ICINGA_LICENSE_HEADER}}}

namespace Monitoring\Form\Command;

use Icinga\Web\Form;
use Icinga\Web\Form\Element\Note;
use \Zend_Form_Element_Hidden;

/**
 * Class AbstractCommand
 */
abstract class AbstractCommand extends Form
{
    /**
     * Label for submit button
     *
     * If omitted, no button will be shown.
     *
     * @var string
     */
    private $submitLabel;

    /**
     * Label for cancel button
     *
     * If omitted, no button will be shown.
     *
     * @var string
     */
    private $cancelLabel;

    /**
     * Array of messages
     * @var string[]
     */
    private $notes = array();

    /**
     * Setter for cancel label
     * @param string $cancelLabel
     */
    public function setCancelLabel($cancelLabel)
    {
        $this->cancelLabel = $cancelLabel;
    }

    /**
     * Getter for cancel label
     * @return string
     */
    public function getCancelLabel()
    {
        return $this->cancelLabel;
    }

    /**
     * Setter for submit label
     * @param string $submitLabel
     */
    public function setSubmitLabel($submitLabel)
    {
        $this->submitLabel = $submitLabel;
    }

    /**
     * Getter for submit label
     * @return string
     */
    public function getSubmitLabel()
    {
        return $this->submitLabel;
    }

    /**
     * Add message to stack
     * @param string $message
     */
    public function addNote($message)
    {
        $this->notes[] = $message;
    }

    /**
     * Purge messages from stack
     */
    public function purgeNotes()
    {
        $this->notes = array();
    }

    /**
     * Getter for notes
     * @return string[]
     */
    public function getNotes()
    {
        return $this->notes;
    }

    /**
     * Create an instance name containing hidden field
     * @return Zend_Form_Element_Hidden
     */
    private function createInstanceHiddenField()
    {
        $field = new Zend_Form_Element_Hidden('instance');
        $value = $this->getRequest()->getParam($field->getName());
        $field->setValue($value);
        return $field;
    }

    /**
     * Add elements to this form (used by extending classes)
     */
    protected function create()
    {
        if (count($this->getNotes())) {
            foreach ($this->getNotes() as $nodeid => $note) {
                $element = new Note(
                    array(
                        'name' => 'note_'. $nodeid,
                        'value' => $note
                    )
                );
                $this->addElement($element);
            }
        }

        if ($this->getCancelLabel()) {
            $cancelLabel = new \Zend_Form_Element_Reset(
                array(
                    'name' => 'reset',
                    'label' => $this->getCancelLabel(),
                    'class' => 'btn pull-right'
                )
            );
            $this->addElement($cancelLabel);
        }

        if ($this->getSubmitLabel()) {
            $submitButton = new \Zend_Form_Element_Submit(
                array(
                    'name' => 'submit',
                    'label' => $this->getSubmitLabel(),
                    'class' => 'btn btn-primary pull-right'
                )
            );
            $this->addElement($submitButton);
        }

        $this->addElement($this->createInstanceHiddenField());
    }

    /**
     * Get the author name
     * TODO(mh): This should work on the request, at present it's fix
     */
    protected function getAuthorName()
    {
        return 'Iwan IV. Wassiljewitsch, der Schreckliche';
    }

    /**
     * Creator for author field
     * @return Zend_Form_Element_Hidden
     */
    protected function createAuthorField()
    {
        $authorName = $this->getAuthorName();

        $authorField = new Zend_Form_Element_Hidden(
            array(
                'name'  => 'author',
                'value' => $authorName,
                'label' => t('Author name')
            )
        );

        $authorField->addDecorator(
            'Callback',
            array(
                'callback' => function () use ($authorName) {
                    return sprintf('<strong>%s</strong>', $authorName);
                }
            )
        );

        return $authorField;
    }
}