<?php

/**
 * @package     Joomla.Administrator
 * @subpackage  com_tags
 *
 * @copyright   (C) 2013 Open Source Matters, Inc. <https://www.joomla.org>
 * @license     GNU General Public License version 2 or later; see LICENSE.txt
 */

namespace Joomla\Component\Tags\Administrator\Table;

use Joomla\CMS\Application\ApplicationHelper;
use Joomla\CMS\Factory;
use Joomla\CMS\Helper\TagsHelper;
use Joomla\CMS\Language\Text;
use Joomla\CMS\Table\Nested;
use Joomla\CMS\Versioning\VersionableTableInterface;
use Joomla\Database\DatabaseDriver;
use Joomla\String\StringHelper;

/**
 * Tags table
 *
 * @since  3.1
 */
class TagTable extends Nested implements VersionableTableInterface
{
    /**
     * An array of key names to be json encoded in the bind function
     *
     * @var    array
     * @since  4.0.0
     */
    protected $_jsonEncode = ['params', 'metadata', 'urls', 'images'];

    /**
     * Indicates that columns fully support the NULL value in the database
     *
     * @var    boolean
     * @since  4.0.0
     */
    protected $_supportNullValue = true;

    /**
     * Constructor
     *
     * @param   DatabaseDriver  $db  A database connector object
     */
    public function __construct(DatabaseDriver $db)
    {
        $this->typeAlias = 'com_tags.tag';

        parent::__construct('#__tags', 'id', $db);
    }

    /**
     * Overloaded check method to ensure data integrity.
     *
     * @return  boolean  True on success.
     *
     * @since   3.1
     * @throws  \UnexpectedValueException
     */
    public function check()
    {
        try {
            parent::check();
        } catch (\Exception $e) {
            $this->setError($e->getMessage());

            return false;
        }

        // Check for valid name.
        if (trim($this->title) == '') {
            throw new \UnexpectedValueException('The title is empty');
        }

        if (empty($this->alias)) {
            $this->alias = $this->title;
        }

        $this->alias = ApplicationHelper::stringURLSafe($this->alias, $this->language);

        if (trim(str_replace('-', '', $this->alias)) == '') {
            $this->alias = Factory::getDate()->format('Y-m-d-H-i-s');
        }

        // Check the publish down date is not earlier than publish up.
        if (!empty($this->publish_down) && !empty($this->publish_up) && $this->publish_down < $this->publish_up) {
            throw new \UnexpectedValueException('End publish date is before start publish date.');
        }

        // Clean up description -- eliminate quotes and <> brackets
        if (!empty($this->metadesc)) {
            // Only process if not empty
            $bad_characters = array("\"", '<', '>');
            $this->metadesc = StringHelper::str_ireplace($bad_characters, '', $this->metadesc);
        }

        if (empty($this->path)) {
            $this->path = '';
        }

        if (empty($this->hits)) {
            $this->hits = 0;
        }

        if (empty($this->params)) {
            $this->params = '{}';
        }

        if (empty($this->metadesc)) {
            $this->metadesc = '';
        }

        if (empty($this->metakey)) {
            $this->metakey = '';
        }

        if (empty($this->metadata)) {
            $this->metadata = '{}';
        }

        if (empty($this->urls)) {
            $this->urls = '{}';
        }

        if (empty($this->images)) {
            $this->images = '{}';
        }

        if (!(int) $this->checked_out_time) {
            $this->checked_out_time = null;
        }

        if (!(int) $this->publish_up) {
            $this->publish_up = null;
        }

        if (!(int) $this->publish_down) {
            $this->publish_down = null;
        }

        return true;
    }

    /**
     * Overridden \JTable::store to set modified data and user id.
     *
     * @param   boolean  $updateNulls  True to update fields even if they are null.
     *
     * @return  boolean  True on success.
     *
     * @since   3.1
     */
    public function store($updateNulls = true)
    {
        $date = Factory::getDate();
        $user = Factory::getUser();

        if ($this->id) {
            // Existing item
            $this->modified_user_id = $user->get('id');
            $this->modified_time = $date->toSql();
        } else {
            // New tag. A tag created and created_by field can be set by the user,
            // so we don't touch either of these if they are set.
            if (!(int) $this->created_time) {
                $this->created_time = $date->toSql();
            }

            if (empty($this->created_user_id)) {
                $this->created_user_id = $user->get('id');
            }

            if (!(int) $this->modified_time) {
                $this->modified_time = $this->created_time;
            }

            if (empty($this->modified_user_id)) {
                $this->modified_user_id = $this->created_user_id;
            }
        }

        // Verify that the alias is unique
        $table = new static($this->getDbo());

        if ($table->load(array('alias' => $this->alias)) && ($table->id != $this->id || $this->id == 0)) {
            $this->setError(Text::_('COM_TAGS_ERROR_UNIQUE_ALIAS'));

            return false;
        }

        return parent::store($updateNulls);
    }

    /**
     * Method to delete a node and, optionally, its child nodes from the table.
     *
     * @param   integer  $pk        The primary key of the node to delete.
     * @param   boolean  $children  True to delete child nodes, false to move them up a level.
     *
     * @return  boolean  True on success.
     *
     * @since   3.1
     */
    public function delete($pk = null, $children = false)
    {
        $return = parent::delete($pk, $children);

        if ($return) {
            $helper = new TagsHelper();
            $helper->tagDeleteInstances($pk);
        }

        return $return;
    }

    /**
     * Get the type alias for the history table
     *
     * @return  string  The alias as described above
     *
     * @since   4.0.0
     */
    public function getTypeAlias()
    {
        return $this->typeAlias;
    }
}
