<?php

/**
 * Joomla! Content Management System
 *
 * @copyright  (C) 2009 Open Source Matters, Inc. <https://www.joomla.org>
 * @license    GNU General Public License version 2 or later; see LICENSE.txt
 */

namespace Joomla\CMS\Form\Field;

use Joomla\CMS\Form\FormField;

// phpcs:disable PSR1.Files.SideEffects
\defined('JPATH_PLATFORM') or die;
// phpcs:enable PSR1.Files.SideEffects

/**
 * Form Field class for the Joomla Platform.
 * Provides an input field for files
 *
 * @link   https://html.spec.whatwg.org/multipage/input.html#file-upload-state-(type=file)
 * @since  1.7.0
 */
class FileField extends FormField
{
    /**
     * The form field type.
     *
     * @var    string
     * @since  1.7.0
     */
    protected $type = 'File';

    /**
     * The accepted file type list.
     *
     * @var    mixed
     * @since  3.2
     */
    protected $accept;

    /**
     * Name of the layout being used to render the field
     *
     * @var    string
     * @since  3.6
     */
    protected $layout = 'joomla.form.field.file';

    /**
     * Method to get certain otherwise inaccessible properties from the form field object.
     *
     * @param   string  $name  The property name for which to get the value.
     *
     * @return  mixed  The property value or null.
     *
     * @since   3.2
     */
    public function __get($name)
    {
        if ($name === 'accept') {
            return $this->accept;
        }

        return parent::__get($name);
    }

    /**
     * Method to set certain otherwise inaccessible properties of the form field object.
     *
     * @param   string  $name   The property name for which to set the value.
     * @param   mixed   $value  The value of the property.
     *
     * @return  void
     *
     * @since   3.2
     */
    public function __set($name, $value)
    {
        switch ($name) {
            case 'accept':
                $this->accept = (string) $value;
                break;

            default:
                parent::__set($name, $value);
        }
    }

    /**
     * Method to attach a Form object to the field.
     *
     * @param   \SimpleXMLElement  $element  The SimpleXMLElement object representing the `<field>` tag for the form field object.
     * @param   mixed              $value    The form field value to validate.
     * @param   string             $group    The field name group control value. This acts as an array container for the field.
     *                                      For example if the field has name="foo" and the group value is set to "bar" then the
     *                                      full field name would end up being "bar[foo]".
     *
     * @return  boolean  True on success.
     *
     * @see     FormField::setup()
     * @since   3.2
     */
    public function setup(\SimpleXMLElement $element, $value, $group = null)
    {
        $return = parent::setup($element, $value, $group);

        if ($return) {
            $this->accept = (string) $this->element['accept'];
        }

        return $return;
    }

    /**
     * Method to get the field input markup for the file field.
     * Field attributes allow specification of a maximum file size and a string
     * of accepted file extensions.
     *
     * @return  string  The field input markup.
     *
     * @note    The field does not include an upload mechanism.
     * @see     \Joomla\CMS\Form\Field\MediaField
     * @since   1.7.0
     */
    protected function getInput()
    {
        return $this->getRenderer($this->layout)->render($this->getLayoutData());
    }

    /**
     * Method to get the data to be passed to the layout for rendering.
     *
     * @return  array
     *
     * @since   3.6
     */
    protected function getLayoutData()
    {
        $data = parent::getLayoutData();

        $extraData = array(
            'accept'   => $this->accept,
            'multiple' => $this->multiple,
        );

        return array_merge($data, $extraData);
    }
}