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<?php
/**
 * Joomla! Content Management System
 *
 * @copyright  (C) 2005 Open Source Matters, Inc. <https://www.joomla.org>
 * @license    GNU General Public License version 2 or later; see LICENSE.txt
 */

namespace Joomla\CMS\Table;

\defined('JPATH_PLATFORM') or die;

use Joomla\CMS\Factory;
use Joomla\CMS\Filter\InputFilter;
use Joomla\CMS\Language\Text;
use Joomla\CMS\Mail\MailHelper;
use Joomla\CMS\String\PunycodeHelper;
use Joomla\Database\DatabaseDriver;
use Joomla\Database\ParameterType;
use Joomla\Registry\Registry;
use Joomla\String\StringHelper;
use Joomla\Utilities\ArrayHelper;

/**
 * Users table
 *
 * @since  1.7.0
 */
class User extends Table
{
	/**
	 * Indicates that columns fully support the NULL value in the database
	 *
	 * @var    boolean
	 * @since  4.0.0
	 */
	protected $_supportNullValue = true;

/**
	 * Associative array of group ids => group ids for the user
	 *
	 * @var    array
	 * @since  1.7.0
	 */
	public $groups;

/**
	 * Constructor
	 *
	 * @param   DatabaseDriver  $db  Database driver object.
	 *
	 * @since  1.7.0
	 */
	public function __construct(DatabaseDriver $db)
	{
		parent::__construct('#__users', 'id', $db);

// Initialise.
		$this->id = 0;
		$this->sendEmail = 0;
	}

/**
	 * Method to load a user, user groups, and any other necessary data
	 * from the database so that it can be bound to the user object.
	 *
	 * @param   integer  $userId  An optional user id.
	 * @param   boolean  $reset   False if row not found or on error
	 *                           (internal error state set in that case).
	 *
	 * @return  boolean  True on success, false on failure.
	 *
	 * @since   1.7.0
	 */
	public function load($userId = null, $reset = true)
	{
		// Get the id to load.
		if ($userId !== null)
		{
			$this->id = $userId;
		}
		else
		{
			$userId = $this->id;
		}

// Check for a valid id to load.
		if ($userId === null)
		{
			return false;
		}

// Reset the table.
		$this->reset();

$userId = (int) $userId;

// Load the user data.
		$query = $this->_db->getQuery(true)
			->select('*')
			->from($this->_db->quoteName('#__users'))
			->where($this->_db->quoteName('id') . ' = :userid')
			->bind(':userid', $userId, ParameterType::INTEGER);
		$this->_db->setQuery($query);
		$data = (array) $this->_db->loadAssoc();

if (!\count($data))
		{
			return false;
		}

// Convert email from punycode
		$data['email'] = PunycodeHelper::emailToUTF8($data['email']);

// Bind the data to the table.
		$return = $this->bind($data);

if ($return !== false)
		{
			// Load the user groups.
			$query->clear()
				->select($this->_db->quoteName('g.id'))
				->select($this->_db->quoteName('g.title'))
				->from($this->_db->quoteName('#__usergroups', 'g'))
				->join(
					'INNER',
					$this->_db->quoteName('#__user_usergroup_map', 'm'),
					$this->_db->quoteName('m.group_id') . ' = ' . $this->_db->quoteName('g.id')
				)
				->where($this->_db->quoteName('m.user_id') . ' = :muserid')
				->bind(':muserid', $userId, ParameterType::INTEGER);
			$this->_db->setQuery($query);

// Add the groups to the user data.
			$this->groups = $this->_db->loadAssocList('id', 'id');
		}

return $return;
	}

/**
	 * Method to bind the user, user groups, and any other necessary data.
	 *
	 * @param   array  $array   The data to bind.
	 * @param   mixed  $ignore  An array or space separated list of fields to ignore.
	 *
	 * @return  boolean  True on success, false on failure.
	 *
	 * @since   1.7.0
	 */
	public function bind($array, $ignore = '')
	{
		if (\array_key_exists('params', $array) && \is_array($array['params']))
		{
			$registry = new Registry($array['params']);
			$array['params'] = (string) $registry;
		}

// Attempt to bind the data.
		$return = parent::bind($array, $ignore);

// Load the real group data based on the bound ids.
		if ($return && !empty($this->groups))
		{
			// Set the group ids.
			$this->groups = ArrayHelper::toInteger($this->groups);

// Get the titles for the user groups.
			$query = $this->_db->getQuery(true)
				->select($this->_db->quoteName('id'))
				->select($this->_db->quoteName('title'))
				->from($this->_db->quoteName('#__usergroups'))
				->whereIn($this->_db->quoteName('id'), array_values($this->groups));
			$this->_db->setQuery($query);

// Set the titles for the user groups.
			$this->groups = $this->_db->loadAssocList('id', 'id');
		}

return $return;
	}

/**
	 * Validation and filtering
	 *
	 * @return  boolean  True if satisfactory
	 *
	 * @since   1.7.0
	 */
	public function check()
	{
		try
		{
			parent::check();
		}
		catch (\Exception $e)
		{
			$this->setError($e->getMessage());

return false;
		}

// Set user id to null instead of 0, if needed
		if ($this->id === 0)
		{
			$this->id = null;
		}

$filterInput = InputFilter::getInstance();

// Validate user information
		if ($filterInput->clean($this->name, 'TRIM') == '')
		{
			$this->setError(Text::_('JLIB_DATABASE_ERROR_PLEASE_ENTER_YOUR_NAME'));

return false;
		}

if ($filterInput->clean($this->username, 'TRIM') == '')
		{
			$this->setError(Text::_('JLIB_DATABASE_ERROR_PLEASE_ENTER_A_USER_NAME'));

return false;
		}

if (preg_match('#[<>"\'%;()&\\\\]|\\.\\./#', $this->username) || StringHelper::strlen($this->username) < 2
			|| $filterInput->clean($this->username, 'TRIM') !== $this->username || StringHelper::strlen($this->username) > 150)
		{
			$this->setError(Text::sprintf('JLIB_DATABASE_ERROR_VALID_AZ09', 2));

return false;
		}

if (($filterInput->clean($this->email, 'TRIM') == '') || !MailHelper::isEmailAddress($this->email)
			|| StringHelper::strlen($this->email) > 100)
		{
			$this->setError(Text::_('JLIB_DATABASE_ERROR_VALID_MAIL'));

return false;
		}

// Convert email to punycode for storage
		$this->email = PunycodeHelper::emailToPunycode($this->email);

// Set the registration timestamp
		if (empty($this->registerDate))
		{
			$this->registerDate = Factory::getDate()->toSql();
		}

// Set the lastvisitDate timestamp
		if (empty($this->lastvisitDate))
		{
			$this->lastvisitDate = null;
		}

// Set the lastResetTime timestamp
		if (empty($this->lastResetTime))
		{
			$this->lastResetTime = null;
		}

$uid = (int) $this->id;

// Check for existing username
		$query = $this->_db->getQuery(true)
			->select($this->_db->quoteName('id'))
			->from($this->_db->quoteName('#__users'))
			->where($this->_db->quoteName('username') . ' = :username')
			->where($this->_db->quoteName('id') . ' != :userid')
			->bind(':username', $this->username)
			->bind(':userid', $uid, ParameterType::INTEGER);
		$this->_db->setQuery($query);

$xid = (int) $this->_db->loadResult();

if ($xid && $xid != (int) $this->id)
		{
			$this->setError(Text::_('JLIB_DATABASE_ERROR_USERNAME_INUSE'));

return false;
		}

// Check for existing email
		$query->clear()
			->select($this->_db->quoteName('id'))
			->from($this->_db->quoteName('#__users'))
			->where('LOWER(' . $this->_db->quoteName('email') . ') = LOWER(:mail)')
			->where($this->_db->quoteName('id') . ' != :muserid')
			->bind(':mail', $this->email)
			->bind(':muserid', $uid, ParameterType::INTEGER);
		$this->_db->setQuery($query);
		$xid = (int) $this->_db->loadResult();

if ($xid && $xid != (int) $this->id)
		{
			$this->setError(Text::_('JLIB_DATABASE_ERROR_EMAIL_INUSE'));

return false;
		}

// Check for root_user != username
		$rootUser = Factory::getApplication()->get('root_user');

if (!is_numeric($rootUser))
		{
			$query->clear()
				->select($this->_db->quoteName('id'))
				->from($this->_db->quoteName('#__users'))
				->where($this->_db->quoteName('username') . ' = :username')
				->bind(':username', $rootUser);
			$this->_db->setQuery($query);
			$xid = (int) $this->_db->loadResult();

if ($rootUser == $this->username && (!$xid || $xid && $xid != (int) $this->id)
				|| $xid && $xid == (int) $this->id && $rootUser != $this->username)
			{
				$this->setError(Text::_('JLIB_DATABASE_ERROR_USERNAME_CANNOT_CHANGE'));

return false;
			}
		}

return true;
	}

/**
	 * Method to store a row in the database from the Table instance properties.
	 *
	 * If a primary key value is set the row with that primary key value will be updated with the instance property values.
	 * If no primary key value is set a new row will be inserted into the database with the properties from the Table instance.
	 *
	 * @param   boolean  $updateNulls  True to update fields even if they are null.
	 *
	 * @return  boolean  True on success.
	 *
	 * @since   1.7.0
	 */
	public function store($updateNulls = true)
	{
		// Get the table key and key value.
		$k = $this->_tbl_key;
		$key = $this->$k;

// TODO: This is a dumb way to handle the groups.
		// Store groups locally so as to not update directly.
		$groups = $this->groups;
		unset($this->groups);

// Insert or update the object based on presence of a key value.
		if ($key)
		{
			// Already have a table key, update the row.
			$this->_db->updateObject($this->_tbl, $this, $this->_tbl_key, $updateNulls);
		}
		else
		{
			// Don't have a table key, insert the row.
			$this->_db->insertObject($this->_tbl, $this, $this->_tbl_key);
		}

// Reset groups to the local object.
		$this->groups = $groups;

$query = $this->_db->getQuery(true);

// Store the group data if the user data was saved.
		if (\is_array($this->groups) && \count($this->groups))
		{
			$uid = (int) $this->id;

// Grab all usergroup entries for the user
			$query->clear()
				->select($this->_db->quoteName('group_id'))
				->from($this->_db->quoteName('#__user_usergroup_map'))
				->where($this->_db->quoteName('user_id') . ' = :userid')
				->bind(':userid', $uid, ParameterType::INTEGER);

$this->_db->setQuery($query);
			$result = $this->_db->loadObjectList();

// Loop through them and check if database contains something $this->groups does not
			if (\count($result))
			{
				$mapGroupId = [];

foreach ($result as $map)
				{
					if (\array_key_exists($map->group_id, $this->groups))
					{
						// It already exists, no action required
						unset($groups[$map->group_id]);
					}
					else
					{
						$mapGroupId[] = (int) $map->group_id;
					}
				}

if (\count($mapGroupId))
				{
					$query->clear()
						->delete($this->_db->quoteName('#__user_usergroup_map'))
						->where($this->_db->quoteName('user_id') . ' = :uid')
						->whereIn($this->_db->quoteName('group_id'), $mapGroupId)
						->bind(':uid', $uid, ParameterType::INTEGER);

$this->_db->setQuery($query);
					$this->_db->execute();
				}
			}

// If there is anything left in this->groups it needs to be inserted
			if (\count($groups))
			{
				// Set the new user group maps.
				$query->clear()
					->insert($this->_db->quoteName('#__user_usergroup_map'))
					->columns([$this->_db->quoteName('user_id'), $this->_db->quoteName('group_id')]);

foreach ($groups as $group)
				{
					$query->values(
						implode(
							',',
							$query->bindArray(
								[$this->id , $group],
								[ParameterType::INTEGER, ParameterType::INTEGER]
							)
						)
					);
				}

$this->_db->setQuery($query);
				$this->_db->execute();
			}

unset($groups);
		}

// If a user is blocked, delete the cookie login rows
		if ($this->block == 1)
		{
			$query->clear()
				->delete($this->_db->quoteName('#__user_keys'))
				->where($this->_db->quoteName('user_id') . ' = :user_id')
				->bind(':user_id', $this->username);
			$this->_db->setQuery($query);
			$this->_db->execute();
		}

return true;
	}

/**
	 * Method to delete a user, user groups, and any other necessary data from the database.
	 *
	 * @param   integer  $userId  An optional user id.
	 *
	 * @return  boolean  True on success, false on failure.
	 *
	 * @since   1.7.0
	 */
	public function delete($userId = null)
	{
		// Set the primary key to delete.
		$k = $this->_tbl_key;

if ($userId)
		{
			$this->$k = (int) $userId;
		}

$key = (int) $this->$k;

// Delete the user.
		$query = $this->_db->getQuery(true)
			->delete($this->_db->quoteName($this->_tbl))
			->where($this->_db->quoteName($this->_tbl_key) . ' = :key')
			->bind(':key', $key, ParameterType::INTEGER);
		$this->_db->setQuery($query);
		$this->_db->execute();

// Delete the user group maps.
		$query->clear()
			->delete($this->_db->quoteName('#__user_usergroup_map'))
			->where($this->_db->quoteName('user_id') . ' = :key')
			->bind(':key', $key, ParameterType::INTEGER);
		$this->_db->setQuery($query);
		$this->_db->execute();

/*
		 * Clean Up Related Data.
		 */

$query->clear()
			->delete($this->_db->quoteName('#__messages_cfg'))
			->where($this->_db->quoteName('user_id') . ' = :key')
			->bind(':key', $key, ParameterType::INTEGER);
		$this->_db->setQuery($query);
		$this->_db->execute();

$query->clear()
			->delete($this->_db->quoteName('#__messages'))
			->where($this->_db->quoteName('user_id_to') . ' = :key')
			->bind(':key', $key, ParameterType::INTEGER);
		$this->_db->setQuery($query);
		$this->_db->execute();

$query->clear()
			->delete($this->_db->quoteName('#__user_keys'))
			->where($this->_db->quoteName('user_id') . ' = :username')
			->bind(':username', $this->username);
		$this->_db->setQuery($query);
		$this->_db->execute();

return true;
	}

/**
	 * Updates last visit time of user
	 *
	 * @param   integer  $timeStamp  The timestamp, defaults to 'now'.
	 * @param   integer  $userId     The user id (optional).
	 *
	 * @return  boolean  False if an error occurs
	 *
	 * @since   1.7.0
	 */
	public function setLastVisit($timeStamp = null, $userId = null)
	{
		// Check for User ID
		if (\is_null($userId))
		{
			if (isset($this))
			{
				$userId = $this->id;
			}
			else
			{
				jexit('No userid in setLastVisit');
			}
		}

// If no timestamp value is passed to function, than current time is used.
		$date      = Factory::getDate($timeStamp);
		$userId    = (int) $userId;
		$lastVisit = $date->toSql();

// Update the database row for the user.
		$db = $this->_db;
		$query = $db->getQuery(true)
			->update($db->quoteName($this->_tbl))
			->set($db->quoteName('lastvisitDate') . ' = :lastvisitDate')
			->where($db->quoteName('id') . ' = :id')
			->bind(':lastvisitDate', $lastVisit)
			->bind(':id', $userId, ParameterType::INTEGER);
		$db->setQuery($query);
		$db->execute();

return true;
	}
}