<?php
/**
 * @package    FrameworkOnFramework
 * @subpackage form
 * @copyright   Copyright (C) 2010 - 2015 Nicholas K. Dionysopoulos / Akeeba Ltd. All rights reserved.
 * @license    GNU General Public License version 2 or later; see LICENSE.txt
 */
// Protect from unauthorized access
defined('F0F_INCLUDED') or die;

JFormHelper::loadFieldClass('rules');

/**
 * Form Field class for F0F
 * Joomla! ACL Rules
 *
 * @package  FrameworkOnFramework
 * @since    2.1
 */
class F0FFormFieldRules extends JFormFieldRules implements F0FFormField
{
	protected $static;

	protected $repeatable;

	/** @var   F0FTable  The item being rendered in a repeatable form field */
	public $item;

	/** @var int A monotonically increasing number, denoting the row number in a repeatable view */
	public $rowid;

	/**
	 * Method to get certain otherwise inaccessible properties from the form field object.
	 *
	 * @param   string  $name  The property name for which to the the value.
	 *
	 * @return  mixed  The property value or null.
	 *
	 * @since   2.0
	 */
	public function __get($name)
	{
		switch ($name)
		{
			// This field cannot provide a static display
			case 'static':
				return '';
				break;

			// This field cannot provide a repeateable display
			case 'repeatable':
				return '';
				break;

			default:
				return parent::__get($name);
		}
	}

	/**
	 * Get the rendering of this field type for static display, e.g. in a single
	 * item view (typically a "read" task).
	 *
	 * @since 2.0
	 *
	 * @return  string  The field HTML
	 */
	public function getStatic()
	{
		return '';
	}

	/**
	 * Get the rendering of this field type for a repeatable (grid) display,
	 * e.g. in a view listing many item (typically a "browse" task)
	 *
	 * @since 2.1
	 *
	 * @return  string  The field HTML
	 */
	public function getRepeatable()
	{
		return '';
	}

    /**
	 * At the timing of this writing (2013-12-03), the Joomla "rules" field is buggy. When you are
	 * dealing with a new record it gets the default permissions from the root asset node, which
	 * is fine for the default permissions of Joomla articles, but unsuitable for third party software.
	 * We had to copy & paste the whole code, since we can't "inject" the correct asset id if one is
	 * not found. Our fixes are surrounded by `F0F Library fix` remarks.
     *
     * @return  string  The input field's HTML for this field type
     */
    public function getInput()
    {
        if (version_compare(JVERSION, '3.0', 'ge'))
        {
            return $this->getInput3x();
        }
        else
        {
            return $this->getInput25();
        }
    }

    protected function getInput25()
    {
        JHtml::_('behavior.tooltip');

        // Initialise some field attributes.
        $section = $this->element['section'] ? (string) $this->element['section'] : '';
        $component = $this->element['component'] ? (string) $this->element['component'] : '';
        $assetField = $this->element['asset_field'] ? (string) $this->element['asset_field'] : 'asset_id';

        // Get the actions for the asset.
        $actions = JAccess::getActions($component, $section);

        // Iterate over the children and add to the actions.
        foreach ($this->element->children() as $el)
        {
            if ($el->getName() == 'action')
            {
                $actions[] = (object) array('name' => (string) $el['name'], 'title' => (string) $el['title'],
                    'description' => (string) $el['description']);
            }
        }

        // Get the explicit rules for this asset.
        if ($section == 'component')
        {
            // Need to find the asset id by the name of the component.
            $db    = F0FPlatform::getInstance()->getDbo();
            $query = $db->getQuery(true);
            $query->select($db->quoteName('id'));
            $query->from($db->quoteName('#__assets'));
            $query->where($db->quoteName('name') . ' = ' . $db->quote($component));
            $db->setQuery($query);
            $assetId = (int) $db->loadResult();

            if ($error = $db->getErrorMsg())
            {
                JError::raiseNotice(500, $error);
            }
        }
        else
        {
            // Find the asset id of the content.
            // Note that for global configuration, com_config injects asset_id = 1 into the form.
            $assetId = $this->form->getValue($assetField);

            // ==== F0F Library fix - Start ====
            // If there is no assetId (let's say we are dealing with a new record), let's ask the table
            // to give it to us. Here you should implement your logic (ie getting default permissions from
            // the component or from the category)
            if(!$assetId)
            {
                $table   = $this->form->getModel()->getTable();
                $assetId = $table->getAssetParentId();
            }
            // ==== F0F Library fix - End   ====
        }

        // Use the compact form for the content rules (deprecated).
        //if (!empty($component) && $section != 'component') {
        //	return JHtml::_('rules.assetFormWidget', $actions, $assetId, $assetId ? null : $component, $this->name, $this->id);
        //}

        // Full width format.

        // Get the rules for just this asset (non-recursive).
        $assetRules = JAccess::getAssetRules($assetId);

        // Get the available user groups.
        $groups = $this->getUserGroups();

        // Build the form control.
        $curLevel = 0;

        // Prepare output
        $html = array();
        $html[] = '<div id="permissions-sliders" class="pane-sliders">';
        $html[] = '<p class="rule-desc">' . JText::_('JLIB_RULES_SETTINGS_DESC') . '</p>';
        $html[] = '<ul id="rules">';

        // Start a row for each user group.
        foreach ($groups as $group)
        {
            $difLevel = $group->level - $curLevel;

            if ($difLevel > 0)
            {
                $html[] = '<li><ul>';
            }
            elseif ($difLevel < 0)
            {
                $html[] = str_repeat('</ul></li>', -$difLevel);
            }

            $html[] = '<li>';

            $html[] = '<div class="panel">';
            $html[] = '<h3 class="pane-toggler title"><a href="javascript:void(0);"><span>';
            $html[] = str_repeat('<span class="level">|&ndash;</span> ', $curLevel = $group->level) . $group->text;
            $html[] = '</span></a></h3>';
            $html[] = '<div class="pane-slider content pane-hide">';
            $html[] = '<div class="mypanel">';
            $html[] = '<table class="group-rules">';
            $html[] = '<thead>';
            $html[] = '<tr>';

            $html[] = '<th class="actions" id="actions-th' . $group->value . '">';
            $html[] = '<span class="acl-action">' . JText::_('JLIB_RULES_ACTION') . '</span>';
            $html[] = '</th>';

            $html[] = '<th class="settings" id="settings-th' . $group->value . '">';
            $html[] = '<span class="acl-action">' . JText::_('JLIB_RULES_SELECT_SETTING') . '</span>';
            $html[] = '</th>';

            // The calculated setting is not shown for the root group of global configuration.
            $canCalculateSettings = ($group->parent_id || !empty($component));
            if ($canCalculateSettings)
            {
                $html[] = '<th id="aclactionth' . $group->value . '">';
                $html[] = '<span class="acl-action">' . JText::_('JLIB_RULES_CALCULATED_SETTING') . '</span>';
                $html[] = '</th>';
            }

            $html[] = '</tr>';
            $html[] = '</thead>';
            $html[] = '<tbody>';

            foreach ($actions as $action)
            {
                $html[] = '<tr>';
                $html[] = '<td headers="actions-th' . $group->value . '">';
                $html[] = '<label class="hasTip" for="' . $this->id . '_' . $action->name . '_' . $group->value . '" title="'
                    . htmlspecialchars(JText::_($action->title) . '::' . JText::_($action->description), ENT_COMPAT, 'UTF-8') . '">';
                $html[] = JText::_($action->title);
                $html[] = '</label>';
                $html[] = '</td>';

                $html[] = '<td headers="settings-th' . $group->value . '">';

                $html[] = '<select name="' . $this->name . '[' . $action->name . '][' . $group->value . ']" id="' . $this->id . '_' . $action->name
                    . '_' . $group->value . '" title="'
                    . JText::sprintf('JLIB_RULES_SELECT_ALLOW_DENY_GROUP', JText::_($action->title), trim($group->text)) . '">';

                $inheritedRule = JAccess::checkGroup($group->value, $action->name, $assetId);

                // Get the actual setting for the action for this group.
                $assetRule = $assetRules->allow($action->name, $group->value);

                // Build the dropdowns for the permissions sliders

                // The parent group has "Not Set", all children can rightly "Inherit" from that.
                $html[] = '<option value=""' . ($assetRule === null ? ' selected="selected"' : '') . '>'
                    . JText::_(empty($group->parent_id) && empty($component) ? 'JLIB_RULES_NOT_SET' : 'JLIB_RULES_INHERITED') . '</option>';
                $html[] = '<option value="1"' . ($assetRule === true ? ' selected="selected"' : '') . '>' . JText::_('JLIB_RULES_ALLOWED')
                    . '</option>';
                $html[] = '<option value="0"' . ($assetRule === false ? ' selected="selected"' : '') . '>' . JText::_('JLIB_RULES_DENIED')
                    . '</option>';

                $html[] = '</select>&#160; ';

                // If this asset's rule is allowed, but the inherited rule is deny, we have a conflict.
                if (($assetRule === true) && ($inheritedRule === false))
                {
                    $html[] = JText::_('JLIB_RULES_CONFLICT');
                }

                $html[] = '</td>';

                // Build the Calculated Settings column.
                // The inherited settings column is not displayed for the root group in global configuration.
                if ($canCalculateSettings)
                {
                    $html[] = '<td headers="aclactionth' . $group->value . '">';

                    // This is where we show the current effective settings considering currrent group, path and cascade.
                    // Check whether this is a component or global. Change the text slightly.

                    if (JAccess::checkGroup($group->value, 'core.admin', $assetId) !== true)
                    {
                        if ($inheritedRule === null)
                        {
                            $html[] = '<span class="icon-16-unset">' . JText::_('JLIB_RULES_NOT_ALLOWED') . '</span>';
                        }
                        elseif ($inheritedRule === true)
                        {
                            $html[] = '<span class="icon-16-allowed">' . JText::_('JLIB_RULES_ALLOWED') . '</span>';
                        }
                        elseif ($inheritedRule === false)
                        {
                            if ($assetRule === false)
                            {
                                $html[] = '<span class="icon-16-denied">' . JText::_('JLIB_RULES_NOT_ALLOWED') . '</span>';
                            }
                            else
                            {
                                $html[] = '<span class="icon-16-denied"><span class="icon-16-locked">' . JText::_('JLIB_RULES_NOT_ALLOWED_LOCKED')
                                    . '</span></span>';
                            }
                        }
                    }
                    elseif (!empty($component))
                    {
                        $html[] = '<span class="icon-16-allowed"><span class="icon-16-locked">' . JText::_('JLIB_RULES_ALLOWED_ADMIN')
                            . '</span></span>';
                    }
                    else
                    {
                        // Special handling for  groups that have global admin because they can't  be denied.
                        // The admin rights can be changed.
                        if ($action->name === 'core.admin')
                        {
                            $html[] = '<span class="icon-16-allowed">' . JText::_('JLIB_RULES_ALLOWED') . '</span>';
                        }
                        elseif ($inheritedRule === false)
                        {
                            // Other actions cannot be changed.
                            $html[] = '<span class="icon-16-denied"><span class="icon-16-locked">'
                                . JText::_('JLIB_RULES_NOT_ALLOWED_ADMIN_CONFLICT') . '</span></span>';
                        }
                        else
                        {
                            $html[] = '<span class="icon-16-allowed"><span class="icon-16-locked">' . JText::_('JLIB_RULES_ALLOWED_ADMIN')
                                . '</span></span>';
                        }
                    }

                    $html[] = '</td>';
                }

                $html[] = '</tr>';
            }

            $html[] = '</tbody>';
            $html[] = '</table></div>';

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

        }

        $html[] = str_repeat('</ul></li>', $curLevel);
        $html[] = '</ul><div class="rule-notes">';
        if ($section == 'component' || $section == null)
        {
            $html[] = JText::_('JLIB_RULES_SETTING_NOTES');
        }
        else
        {
            $html[] = JText::_('JLIB_RULES_SETTING_NOTES_ITEM');
        }
        $html[] = '</div></div>';

        $js = "window.addEvent('domready', function(){ new Fx.Accordion($$('div#permissions-sliders.pane-sliders .panel h3.pane-toggler'),"
            . "$$('div#permissions-sliders.pane-sliders .panel div.pane-slider'), {onActive: function(toggler, i) {toggler.addClass('pane-toggler-down');"
            . "toggler.removeClass('pane-toggler');i.addClass('pane-down');i.removeClass('pane-hide');Cookie.write('jpanesliders_permissions-sliders"
            . $component
            . "',$$('div#permissions-sliders.pane-sliders .panel h3').indexOf(toggler));},"
            . "onBackground: function(toggler, i) {toggler.addClass('pane-toggler');toggler.removeClass('pane-toggler-down');i.addClass('pane-hide');"
            . "i.removeClass('pane-down');}, duration: 300, display: "
            . JRequest::getInt('jpanesliders_permissions-sliders' . $component, 0, 'cookie') . ", show: "
            . JRequest::getInt('jpanesliders_permissions-sliders' . $component, 0, 'cookie') . ", alwaysHide:true, opacity: false}); });";

        JFactory::getDocument()->addScriptDeclaration($js);

        return implode("\n", $html);
    }

    protected function getInput3x()
    {
        JHtml::_('bootstrap.tooltip');

        // Initialise some field attributes.
        $section    = $this->section;
        $component  = $this->component;
        $assetField = $this->assetField;

        // Get the actions for the asset.
        $actions = JAccess::getActions($component, $section);

        // Iterate over the children and add to the actions.
        foreach ($this->element->children() as $el)
        {
            if ($el->getName() == 'action')
            {
                $actions[] = (object) array('name' => (string) $el['name'], 'title' => (string) $el['title'],
                    'description' => (string) $el['description']);
            }
        }

        // Get the explicit rules for this asset.
        if ($section == 'component')
        {
            // Need to find the asset id by the name of the component.
            $db    = F0FPlatform::getInstance()->getDbo();
            $query = $db->getQuery(true)
                        ->select($db->quoteName('id'))
                        ->from($db->quoteName('#__assets'))
                        ->where($db->quoteName('name') . ' = ' . $db->quote($component));

            $assetId = (int) $db->setQuery($query)->loadResult();
        }
        else
        {
            // Find the asset id of the content.
            // Note that for global configuration, com_config injects asset_id = 1 into the form.
            $assetId = $this->form->getValue($assetField);

            // ==== F0F Library fix - Start ====
            // If there is no assetId (let's say we are dealing with a new record), let's ask the table
            // to give it to us. Here you should implement your logic (ie getting default permissions from
            // the component or from the category)
            if(!$assetId)
            {
                $table   = $this->form->getModel()->getTable();
                $assetId = $table->getAssetParentId();
            }
            // ==== F0F Library fix - End   ====
        }

        // Full width format.

        // Get the rules for just this asset (non-recursive).
        $assetRules = JAccess::getAssetRules($assetId);

        // Get the available user groups.
        $groups = $this->getUserGroups();

        // Prepare output
        $html = array();

        // Description
        $html[] = '<p class="rule-desc">' . JText::_('JLIB_RULES_SETTINGS_DESC') . '</p>';

        // Begin tabs
        $html[] = '<div id="permissions-sliders" class="tabbable tabs-left">';

        // Building tab nav
        $html[] = '<ul class="nav nav-tabs">';

        foreach ($groups as $group)
        {
            // Initial Active Tab
            $active = "";

            if ($group->value == 1)
            {
                $active = "active";
            }

            $html[] = '<li class="' . $active . '">';
            $html[] = '<a href="#permission-' . $group->value . '" data-toggle="tab">';
            $html[] = str_repeat('<span class="level">&ndash;</span> ', $curLevel = $group->level) . $group->text;
            $html[] = '</a>';
            $html[] = '</li>';
        }

        $html[] = '</ul>';

        $html[] = '<div class="tab-content">';

        // Start a row for each user group.
        foreach ($groups as $group)
        {
            // Initial Active Pane
            $active = "";

            if ($group->value == 1)
            {
                $active = " active";
            }

            $html[] = '<div class="tab-pane' . $active . '" id="permission-' . $group->value . '">';
            $html[] = '<table class="table table-striped">';
            $html[] = '<thead>';
            $html[] = '<tr>';

            $html[] = '<th class="actions" id="actions-th' . $group->value . '">';
            $html[] = '<span class="acl-action">' . JText::_('JLIB_RULES_ACTION') . '</span>';
            $html[] = '</th>';

            $html[] = '<th class="settings" id="settings-th' . $group->value . '">';
            $html[] = '<span class="acl-action">' . JText::_('JLIB_RULES_SELECT_SETTING') . '</span>';
            $html[] = '</th>';

            // The calculated setting is not shown for the root group of global configuration.
            $canCalculateSettings = ($group->parent_id || !empty($component));

            if ($canCalculateSettings)
            {
                $html[] = '<th id="aclactionth' . $group->value . '">';
                $html[] = '<span class="acl-action">' . JText::_('JLIB_RULES_CALCULATED_SETTING') . '</span>';
                $html[] = '</th>';
            }

            $html[] = '</tr>';
            $html[] = '</thead>';
            $html[] = '<tbody>';

            foreach ($actions as $action)
            {
                $html[] = '<tr>';
                $html[] = '<td headers="actions-th' . $group->value . '">';
                $html[] = '<label for="' . $this->id . '_' . $action->name . '_' . $group->value . '" class="hasTooltip" title="'
                    . htmlspecialchars(JText::_($action->title) . ' ' . JText::_($action->description), ENT_COMPAT, 'UTF-8') . '">';
                $html[] = JText::_($action->title);
                $html[] = '</label>';
                $html[] = '</td>';

                $html[] = '<td headers="settings-th' . $group->value . '">';

                $html[] = '<select class="input-small" name="' . $this->name . '[' . $action->name . '][' . $group->value . ']" id="' . $this->id . '_' . $action->name
                    . '_' . $group->value . '" title="'
                    . JText::sprintf('JLIB_RULES_SELECT_ALLOW_DENY_GROUP', JText::_($action->title), trim($group->text)) . '">';

                $inheritedRule = JAccess::checkGroup($group->value, $action->name, $assetId);

                // Get the actual setting for the action for this group.
                $assetRule = $assetRules->allow($action->name, $group->value);

                // Build the dropdowns for the permissions sliders

                // The parent group has "Not Set", all children can rightly "Inherit" from that.
                $html[] = '<option value=""' . ($assetRule === null ? ' selected="selected"' : '') . '>'
                    . JText::_(empty($group->parent_id) && empty($component) ? 'JLIB_RULES_NOT_SET' : 'JLIB_RULES_INHERITED') . '</option>';
                $html[] = '<option value="1"' . ($assetRule === true ? ' selected="selected"' : '') . '>' . JText::_('JLIB_RULES_ALLOWED')
                    . '</option>';
                $html[] = '<option value="0"' . ($assetRule === false ? ' selected="selected"' : '') . '>' . JText::_('JLIB_RULES_DENIED')
                    . '</option>';

                $html[] = '</select>&#160; ';

                // If this asset's rule is allowed, but the inherited rule is deny, we have a conflict.
                if (($assetRule === true) && ($inheritedRule === false))
                {
                    $html[] = JText::_('JLIB_RULES_CONFLICT');
                }

                $html[] = '</td>';

                // Build the Calculated Settings column.
                // The inherited settings column is not displayed for the root group in global configuration.
                if ($canCalculateSettings)
                {
                    $html[] = '<td headers="aclactionth' . $group->value . '">';

                    // This is where we show the current effective settings considering currrent group, path and cascade.
                    // Check whether this is a component or global. Change the text slightly.

                    if (JAccess::checkGroup($group->value, 'core.admin', $assetId) !== true)
                    {
                        if ($inheritedRule === null)
                        {
                            $html[] = '<span class="label label-important">' . JText::_('JLIB_RULES_NOT_ALLOWED') . '</span>';
                        }
                        elseif ($inheritedRule === true)
                        {
                            $html[] = '<span class="label label-success">' . JText::_('JLIB_RULES_ALLOWED') . '</span>';
                        }
                        elseif ($inheritedRule === false)
                        {
                            if ($assetRule === false)
                            {
                                $html[] = '<span class="label label-important">' . JText::_('JLIB_RULES_NOT_ALLOWED') . '</span>';
                            }
                            else
                            {
                                $html[] = '<span class="label"><i class="icon-lock icon-white"></i> ' . JText::_('JLIB_RULES_NOT_ALLOWED_LOCKED')
                                    . '</span>';
                            }
                        }
                    }
                    elseif (!empty($component))
                    {
                        $html[] = '<span class="label label-success"><i class="icon-lock icon-white"></i> ' . JText::_('JLIB_RULES_ALLOWED_ADMIN')
                            . '</span>';
                    }
                    else
                    {
                        // Special handling for  groups that have global admin because they can't  be denied.
                        // The admin rights can be changed.
                        if ($action->name === 'core.admin')
                        {
                            $html[] = '<span class="label label-success">' . JText::_('JLIB_RULES_ALLOWED') . '</span>';
                        }
                        elseif ($inheritedRule === false)
                        {
                            // Other actions cannot be changed.
                            $html[] = '<span class="label label-important"><i class="icon-lock icon-white"></i> '
                                . JText::_('JLIB_RULES_NOT_ALLOWED_ADMIN_CONFLICT') . '</span>';
                        }
                        else
                        {
                            $html[] = '<span class="label label-success"><i class="icon-lock icon-white"></i> ' . JText::_('JLIB_RULES_ALLOWED_ADMIN')
                                . '</span>';
                        }
                    }

                    $html[] = '</td>';
                }

                $html[] = '</tr>';
            }

            $html[] = '</tbody>';
            $html[] = '</table></div>';
        }

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

        $html[] = '<div class="alert">';

        if ($section == 'component' || $section == null)
        {
            $html[] = JText::_('JLIB_RULES_SETTING_NOTES');
        }
        else
        {
            $html[] = JText::_('JLIB_RULES_SETTING_NOTES_ITEM');
        }

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

        return implode("\n", $html);
    }
}
