<?php
/**
 * @copyright	Copyright (C) 2011 Simplify Your Web, Inc. All rights reserved.
 * @license		GNU General Public License version 3 or later; see LICENSE.txt
 */

namespace SYW\Library\Field;

defined('_JEXEC') or die;

use Joomla\CMS\Component\ComponentHelper;
use Joomla\CMS\Factory;
use Joomla\CMS\Form\FormField;
use Joomla\CMS\HTML\HTMLHelper;
use Joomla\CMS\Language\Text;
use Joomla\CMS\Uri\Uri;

class ImageradioField extends FormField
{
    public $type = 'Imageradio';

	protected $use_global;
	protected $image_height;

    protected function getInput()
    {
        // Initialize variables.
        $html = array();

        // Initialize some field attributes.
        $class_attribute = !empty($this->class) ? ' class="' . $this->class . '"' : '';
        $required  = $this->required ? ' required aria-required="true"' : '';
        $autofocus = $this->autofocus ? ' autofocus' : '';
        $disabled  = $this->disabled ? ' disabled' : '';
        $readonly  = $this->readonly;

        // Start the radio field output.
        $html[] = '<fieldset id="' . $this->id . '">';
        $html[] = '<div' . $class_attribute . $required . $autofocus . $disabled . '>';

        // Get the field options.
        $options = $this->getOptions();
        
        $wam = Factory::getApplication()->getDocument()->getWebAssetManager();

        HTMLHelper::_('bootstrap.tooltip', '.hasTooltip');
        
        $wam->registerAndUseStyle('syw.font', 'syw/fonts.min.css', ['relative' => true, 'version' => 'auto']);

        // Build the radio field output.
        foreach ($options as $i => $option) {
            // Initialize some option attributes.
            $checked = ((string) $option->value == (string) $this->value) ? ' checked="checked"' : '';

            $class = !empty($option->class) ? ' ' . $option->class : '';

            $disabled = !empty($option->disable) || ($readonly && !$checked);

            $disabled = $disabled ? ' disabled' : '';

            // Initialize some JavaScript option attributes.
            $onclick = !empty($option->onclick) ? ' onclick="' . $option->onclick . '"' : '';
            $onchange = !empty($option->onchange) ? ' onchange="' . $option->onchange . '"' : '';

            $html[] = '<div class="form-check form-check-inline">';
            $html[] = '<input type="radio" id="' . $this->id . $i . '" name="' . $this->name . '" value="' . htmlspecialchars($option->value, ENT_COMPAT, 'UTF-8') . '"' . $checked . $required . $onclick . 'class="form-check-input'.$class.'"' . $onchange . $disabled . ' />';

			$title =  Text::alt($option->text, preg_replace('/[^a-zA-Z0-9_\-]/', '_', $this->fieldname));

			$style = '';
			if ($this->image_height > 0) {
				$style = ' style="height: ' . $this->image_height . 'px; line-height: ' . $this->image_height . 'px"';
			}

			$html[] = '<label title="'. $title .'" for="' . $this->id . $i . '" class="form-check-label hasTooltip'.$class.'"' . $style . '>';
			if ($option->image) {
				$html[] = '<img style="margin: 0" src="'.URI::root().$option->image.'" alt="'. $title .'" />';
			} else if ($option->icon) {
				$html[] = '<i class="'.$option->icon.'"></i>&nbsp;'.$title;
			} else {
				$html[] = $title;
			}
			$html[] = '</label>';
            $html[] = '</div>';

			$required = '';
        }

        $html[] = '</div>';
        $html[] = '</fieldset>';

        return implode($html);
    }

    protected function getOptions()
    {
    	$options = array();

    	$global_value = '';

    	if ($this->use_global) {

    		$image = '';
    		$icon = '';

    		$component  = Factory::getApplication()->input->getCmd('option');
    		if ($component == 'com_menus') { // we are in the context of a menu item
    			$uri = new Uri($this->form->getData()->get('link'));
    			$component = $uri->getVar('option', 'com_menus');
    		}

    		$params = ComponentHelper::getParams($component);
    		$value  = $params->get($this->fieldname);

    		if (!is_null($value)) {
    			$value = (string) $value;

    			foreach ($this->element->xpath('option') as $option) {
    				if (isset($option['value']) && (string) $option['value'] === $value) {

    					if (isset($option['imagesrc'])) {
    						$image = (string) $option['imagesrc'];
    					}

    					if (isset($option['icon'])) {
    						$icon = (string) $option['icon'];
    					}

    					$global_value = Text::_((string) $option);

    					break;
    				}
    			}
    		}

    		$tmp = HTMLHelper::_('select.option', '', $global_value ? Text::sprintf('JGLOBAL_USE_GLOBAL_VALUE', $global_value) : Text::_('JGLOBAL_USE_GLOBAL'), 'value', 'text', false);

    		$tmp->image = $image;
    		$tmp->icon = $icon;

    		$options[] = $tmp;
    	}

        foreach ($this->element->children() as $option) {

            // Only add <option /> elements.
            if ($option->getName() != 'option') {
                continue;
            }

            $disabled = (string) $option['disabled'];
            $disabled = ($disabled == 'true' || $disabled == 'disabled' || $disabled == '1');

            // Create a new option object based on the <option /> element.
            $tmp = HTMLHelper::_('select.option', (string) $option['value'], trim((string) $option), 'value', 'text', $disabled);

            // Set some option attributes.
            $tmp->class = (string) $option['class'];

            // Set some JavaScript option attributes.
            $tmp->onclick = (string) $option['onclick'];
            $tmp->onchange = (string) $option['onchange'];

            $tmp->image = '';
            if (isset($option['imagesrc'])) {
            	$tmp->image = (string) $option['imagesrc'];

            	// global value unknown (happens when global config has not yet been saved), take the biggest image height to ensure all radio fields have the same height
            	if ($this->use_global && empty($global_value)) {
            		$image_info = @getimagesize(URI::root() . $tmp->image);
            		if ($image_info && isset($image_info[1]) && $image_info[1] > $this->image_height) {
            			$this->image_height = $image_info[1];
            		}
            	}
            }

            $tmp->icon = '';
            if (isset($option['icon'])) {
                $tmp->icon = (string) $option['icon'];
            }

            // Add the option object to the result set.
            $options[] = $tmp;
        }

        reset($options);

        return $options;
    }

	public function setup(\SimpleXMLElement $element, $value, $group = null)
	{
		$return = parent::setup($element, $value, $group);

		if ($return) {
			$this->use_global = ((string)$this->element['global'] == "true" || (string)$this->element['useglobal'] == "true") ? true : false;
			$this->image_height = 0;
		}

		return $return;
	}
}