Questions-and-Answers/admin/models/import.php

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<?php
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/*--------------------------------------------------------------------------------------------------------| www.vdm.io |------/
__ __ _ _____ _ _ __ __ _ _ _
\ \ / / | | | __ \ | | | | | \/ | | | | | | |
\ \ / /_ _ ___| |_ | | | | _____ _____| | ___ _ __ _ __ ___ ___ _ __ | |_ | \ / | ___| |_| |__ ___ __| |
\ \/ / _` / __| __| | | | |/ _ \ \ / / _ \ |/ _ \| '_ \| '_ ` _ \ / _ \ '_ \| __| | |\/| |/ _ \ __| '_ \ / _ \ / _` |
\ / (_| \__ \ |_ | |__| | __/\ V / __/ | (_) | |_) | | | | | | __/ | | | |_ | | | | __/ |_| | | | (_) | (_| |
\/ \__,_|___/\__| |_____/ \___| \_/ \___|_|\___/| .__/|_| |_| |_|\___|_| |_|\__| |_| |_|\___|\__|_| |_|\___/ \__,_|
| |
|_|
/-------------------------------------------------------------------------------------------------------------------------------/
@version 1.0.x
@build 2nd March, 2022
@created 30th January, 2017
@package Questions and Answers
@subpackage import.php
@author Llewellyn van der Merwe <https://www.vdm.io/>
@copyright Copyright (C) 2015. All Rights Reserved
@license GNU/GPL Version 2 or later - http://www.gnu.org/licenses/gpl-2.0.html
Questions &amp; Answers
/-----------------------------------------------------------------------------------------------------------------------------*/
// No direct access to this file
defined('_JEXEC') or die('Restricted access');
use Joomla\CMS\Filesystem\File;
use Joomla\CMS\Filesystem\Folder;
use Joomla\Utilities\ArrayHelper;
use PhpOffice\PhpSpreadsheet\IOFactory;
/**
* Questionsanswers Import Model
*/
class QuestionsanswersModelImport extends JModelLegacy
{
// set uploading values
protected $use_streams = false;
protected $allow_unsafe = false;
protected $safeFileOptions = array();
/**
* @var object JTable object
*/
protected $_table = null;
/**
* @var object JTable object
*/
protected $_url = null;
/**
* Model context string.
*
* @var string
*/
protected $_context = 'com_questionsanswers.import';
/**
* Import Settings
*/
protected $getType = NULL;
protected $dataType = NULL;
/**
* Method to auto-populate the model state.
*
* Note. Calling getState in this method will result in recursion.
*
* @return void
*
*/
protected function populateState()
{
$app = JFactory::getApplication('administrator');
$this->setState('message', $app->getUserState('com_questionsanswers.message'));
$app->setUserState('com_questionsanswers.message', '');
// Recall the 'Import from Directory' path.
$path = $app->getUserStateFromRequest($this->_context . '.import_directory', 'import_directory', $app->get('tmp_path'));
$this->setState('import.directory', $path);
parent::populateState();
}
/**
* Import an spreadsheet from either folder, url or upload.
*
* @return boolean result of import
*
*/
public function import()
{
$this->setState('action', 'import');
$app = JFactory::getApplication();
$session = JFactory::getSession();
$package = null;
$continue = false;
// get import type
$this->getType = $app->input->getString('gettype', NULL);
// get import type
$this->dataType = $session->get('dataType_VDM_IMPORTINTO', NULL);
if ($package === null)
{
switch ($this->getType)
{
case 'folder':
// Remember the 'Import from Directory' path.
$app->getUserStateFromRequest($this->_context . '.import_directory', 'import_directory');
$package = $this->_getPackageFromFolder();
break;
case 'upload':
$package = $this->_getPackageFromUpload();
break;
case 'url':
$package = $this->_getPackageFromUrl();
break;
case 'continue':
$continue = true;
$package = $session->get('package', null);
$package = json_decode($package, true);
// clear session
$session->clear('package');
$session->clear('dataType');
$session->clear('hasPackage');
break;
default:
$app->setUserState('com_questionsanswers.message', JText::_('COM_QUESTIONSANSWERS_IMPORT_NO_IMPORT_TYPE_FOUND'));
return false;
break;
}
}
// Was the package valid?
if (!$package || !$package['type'])
{
if (in_array($this->getType, array('upload', 'url')))
{
$this->remove($package['packagename']);
}
$app->setUserState('com_questionsanswers.message', JText::_('COM_QUESTIONSANSWERS_IMPORT_UNABLE_TO_FIND_IMPORT_PACKAGE'));
return false;
}
// first link data to table headers
if(!$continue){
$package = json_encode($package);
$session->set('package', $package);
$session->set('dataType', $this->dataType);
$session->set('hasPackage', true);
return true;
}
// set the data
$headerList = json_decode($session->get($this->dataType.'_VDM_IMPORTHEADERS', false), true);
if (!$this->setData($package,$this->dataType,$headerList))
{
// There was an error importing the package
$msg = JText::_('COM_QUESTIONSANSWERS_IMPORT_ERROR');
$back = $session->get('backto_VDM_IMPORT', NULL);
if ($back)
{
$app->setUserState('com_questionsanswers.redirect_url', 'index.php?option=com_questionsanswers&view='.$back);
$session->clear('backto_VDM_IMPORT');
}
$result = false;
}
else
{
// Package imported sucessfully
$msg = JText::sprintf('COM_QUESTIONSANSWERS_IMPORT_SUCCESS', $package['packagename']);
$back = $session->get('backto_VDM_IMPORT', NULL);
if ($back)
{
$app->setUserState('com_questionsanswers.redirect_url', 'index.php?option=com_questionsanswers&view='.$back);
$session->clear('backto_VDM_IMPORT');
}
$result = true;
}
// Set some model state values
$app->enqueueMessage($msg);
// remove file after import
$this->remove($package['packagename']);
$session->clear($this->getType.'_VDM_IMPORTHEADERS');
return $result;
}
/**
* Works out an importation spreadsheet from a HTTP upload
*
* @return spreadsheet definition or false on failure
*/
protected function _getPackageFromUpload()
{
// Get the uploaded file information
$app = JFactory::getApplication();
$input = $app->input;
// Do not change the filter type 'raw'. We need this to let files containing PHP code to upload. See JInputFiles::get.
$userfile = $input->files->get('import_package', null, 'raw');
// Make sure that file uploads are enabled in php
if (!(bool) ini_get('file_uploads'))
{
$app->enqueueMessage(JText::_('COM_QUESTIONSANSWERS_IMPORT_MSG_WARNIMPORTFILE'), 'warning');
return false;
}
// If there is no uploaded file, we have a problem...
if (!is_array($userfile))
{
$app->enqueueMessage(JText::_('COM_QUESTIONSANSWERS_IMPORT_MSG_NO_FILE_SELECTED'), 'warning');
return false;
}
// Check if there was a problem uploading the file.
if ($userfile['error'] || $userfile['size'] < 1)
{
$app->enqueueMessage(JText::_('COM_QUESTIONSANSWERS_IMPORT_MSG_WARNIMPORTUPLOADERROR'), 'warning');
return false;
}
// Build the appropriate paths
$config = JFactory::getConfig();
$tmp_dest = $config->get('tmp_path') . '/' . $userfile['name'];
$tmp_src = $userfile['tmp_name'];
// Move uploaded file
jimport('joomla.filesystem.file');
$p_file = File::upload($tmp_src, $tmp_dest, $this->use_streams, $this->allow_unsafe, $this->safeFileOptions);
// Was the package downloaded?
if (!$p_file)
{
$session = JFactory::getSession();
$session->clear('package');
$session->clear('dataType');
$session->clear('hasPackage');
// was not uploaded
return false;
}
// check that this is a valid spreadsheet
$package = $this->check($userfile['name']);
return $package;
}
/**
* Import an spreadsheet from a directory
*
* @return array Spreadsheet details or false on failure
*
*/
protected function _getPackageFromFolder()
{
$app = JFactory::getApplication();
$input = $app->input;
// Get the path to the package to import
$p_dir = $input->getString('import_directory');
$p_dir = JPath::clean($p_dir);
// Did you give us a valid path?
if (!file_exists($p_dir))
{
$app->enqueueMessage(JText::_('COM_QUESTIONSANSWERS_IMPORT_MSG_PLEASE_ENTER_A_PACKAGE_DIRECTORY'), 'warning');
return false;
}
// Detect the package type
$type = $this->getType;
// Did you give us a valid package?
if (!$type)
{
$app->enqueueMessage(JText::_('COM_QUESTIONSANSWERS_IMPORT_MSG_PATH_DOES_NOT_HAVE_A_VALID_PACKAGE'), 'warning');
}
// check the extention
if(!$this->checkExtension($p_dir))
{
// set error message
$app->enqueueMessage(JText::_('COM_QUESTIONSANSWERS_IMPORT_MSG_DOES_NOT_HAVE_A_VALID_FILE_TYPE'), 'warning');
return false;
}
$package['packagename'] = null;
$package['dir'] = $p_dir;
$package['type'] = $type;
return $package;
}
/**
* Import an spreadsheet from a URL
*
* @return Package details or false on failure
*
*/
protected function _getPackageFromUrl()
{
$app = JFactory::getApplication();
$input = $app->input;
// Get the URL of the package to import
$url = $input->getString('import_url');
// Did you give us a URL?
if (!$url)
{
$app->enqueueMessage(JText::_('COM_QUESTIONSANSWERS_IMPORT_MSG_ENTER_A_URL'), 'warning');
return false;
}
// Download the package at the URL given
$p_file = JInstallerHelper::downloadPackage($url);
// Was the package downloaded?
if (!$p_file)
{
$app->enqueueMessage(JText::_('COM_QUESTIONSANSWERS_IMPORT_MSG_INVALID_URL'), 'warning');
return false;
}
// check that this is a valid spreadsheet
$package = $this->check($p_file);
return $package;
}
/**
* Check a file and verifies it as a spreadsheet file
* Supports .csv .xlsx .xls and .ods
*
* @param string $p_filename The uploaded package filename or import directory
*
* @return array of elements
*
*/
protected function check($archivename)
{
$app = JFactory::getApplication();
// Clean the name
$archivename = JPath::clean($archivename);
// check the extention
if(!$this->checkExtension($archivename))
{
// Cleanup the import files
$this->remove($archivename);
$app->enqueueMessage(JText::_('COM_QUESTIONSANSWERS_IMPORT_MSG_DOES_NOT_HAVE_A_VALID_FILE_TYPE'), 'warning');
return false;
}
$config = JFactory::getConfig();
// set Package Name
$check['packagename'] = $archivename;
// set directory
$check['dir'] = $config->get('tmp_path'). '/' .$archivename;
// set type
$check['type'] = $this->getType;
return $check;
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}
/**
* Check the extension
*
* @param string $file Name of the uploaded file
*
* @return boolean True on success
*
*/
protected function checkExtension($file)
{
// check the extention
switch(strtolower(pathinfo($file, PATHINFO_EXTENSION)))
{
case 'xls':
case 'ods':
case 'csv':
return true;
break;
}
return false;
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}
/**
* Clean up temporary uploaded spreadsheet
*
* @param string $package Name of the uploaded spreadsheet file
*
* @return boolean True on success
*
*/
protected function remove($package)
{
jimport('joomla.filesystem.file');
$config = JFactory::getConfig();
$package = $config->get('tmp_path'). '/' .$package;
// Is the package file a valid file?
if (is_file($package))
{
File::delete($package);
}
elseif (is_file(JPath::clean($package)))
{
// It might also be just a base filename
File::delete(JPath::clean($package));
}
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}
/**
* Set the data from the spreadsheet to the database
*
* @param string $package Paths to the uploaded package file
*
* @return boolean false on failure
*
**/
protected function setData($package,$table,$target_headers)
{
if (QuestionsanswersHelper::checkArray($target_headers))
{
// make sure the file is loaded
QuestionsanswersHelper::composerAutoload('phpspreadsheet');
$jinput = JFactory::getApplication()->input;
foreach($target_headers as $header)
{
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if (($column = $jinput->getString($header, false)) !== false ||
($column = $jinput->getString(strtolower($header), false)) !== false)
{
$data['target_headers'][$header] = $column;
}
else
{
$data['target_headers'][$header] = null;
}
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}
// set the data
if(isset($package['dir']))
{
$inputFileType = IOFactory::identify($package['dir']);
$excelReader = IOFactory::createReader($inputFileType);
$excelReader->setReadDataOnly(true);
$excelObj = $excelReader->load($package['dir']);
$data['array'] = $excelObj->getActiveSheet()->toArray(null, true,true,true);
$excelObj->disconnectWorksheets();
unset($excelObj);
return $this->save($data, $table);
}
}
return false;
}
/**
* Save the data from the file to the database
*
* @param string $package Paths to the uploaded package file
*
* @return boolean false on failure
*
**/
protected function save($data,$table)
{
// import the data if there is any
if(QuestionsanswersHelper::checkArray($data['array']))
{
// get user object
$user = JFactory::getUser();
// remove header if it has headers
$id_key = $data['target_headers']['id'];
$published_key = $data['target_headers']['published'];
$ordering_key = $data['target_headers']['ordering'];
// get the first array set
$firstSet = reset($data['array']);
// check if first array is a header array and remove if true
if($firstSet[$id_key] == 'id' || $firstSet[$published_key] == 'published' || $firstSet[$ordering_key] == 'ordering')
{
array_shift($data['array']);
}
// make sure there is still values in array and that it was not only headers
if(QuestionsanswersHelper::checkArray($data['array']) && $user->authorise($table.'.import', 'com_questionsanswers') && $user->authorise('core.import', 'com_questionsanswers'))
{
// set target.
$target = array_flip($data['target_headers']);
// Get a db connection.
$db = JFactory::getDbo();
// set some defaults
$todayDate = JFactory::getDate()->toSql();
// get global action permissions
$canDo = QuestionsanswersHelper::getActions($table);
$canEdit = $canDo->get('core.edit');
$canState = $canDo->get('core.edit.state');
$canCreate = $canDo->get('core.create');
$hasAlias = $this->getAliasesUsed($table);
// prosses the data
foreach($data['array'] as $row)
{
$found = false;
if (isset($row[$id_key]) && is_numeric($row[$id_key]) && $row[$id_key] > 0)
{
// raw items import & update!
$query = $db->getQuery(true);
$query
->select('version')
->from($db->quoteName('#__questionsanswers_'.$table))
->where($db->quoteName('id') . ' = '. $db->quote($row[$id_key]));
// Reset the query using our newly populated query object.
$db->setQuery($query);
$db->execute();
$found = $db->getNumRows();
}
if($found && $canEdit)
{
// update item
$id = $row[$id_key];
$version = $db->loadResult();
// reset all buckets
$query = $db->getQuery(true);
$fields = array();
// Fields to update.
foreach($row as $key => $cell)
{
// ignore column
if ('IGNORE' == $target[$key])
{
continue;
}
// update modified
if ('modified_by' == $target[$key])
{
continue;
}
// update modified
if ('modified' == $target[$key])
{
continue;
}
// update version
if ('version' == $target[$key])
{
$cell = (int) $version + 1;
}
// verify publish authority
if ('published' == $target[$key] && !$canState)
{
continue;
}
// set to update array
if(in_array($key, $data['target_headers']) && is_numeric($cell))
{
$fields[] = $db->quoteName($target[$key]) . ' = ' . $cell;
}
elseif(in_array($key, $data['target_headers']) && is_string($cell))
{
$fields[] = $db->quoteName($target[$key]) . ' = ' . $db->quote($cell);
}
elseif(in_array($key, $data['target_headers']) && is_null($cell))
{
// if import data is null then set empty
$fields[] = $db->quoteName($target[$key]) . " = ''";
}
}
// load the defaults
$fields[] = $db->quoteName('modified_by') . ' = ' . $db->quote($user->id);
$fields[] = $db->quoteName('modified') . ' = ' . $db->quote($todayDate);
// Conditions for which records should be updated.
$conditions = array(
$db->quoteName('id') . ' = ' . $id
);
$query->update($db->quoteName('#__questionsanswers_'.$table))->set($fields)->where($conditions);
$db->setQuery($query);
$db->execute();
}
elseif ($canCreate)
{
// insert item
$query = $db->getQuery(true);
// reset all buckets
$columns = array();
$values = array();
$version = false;
// Insert columns. Insert values.
foreach($row as $key => $cell)
{
// ignore column
if ('IGNORE' == $target[$key])
{
continue;
}
// remove id
if ('id' == $target[$key])
{
continue;
}
// update created
if ('created_by' == $target[$key])
{
continue;
}
// update created
if ('created' == $target[$key])
{
continue;
}
// Make sure the alias is incremented
if ('alias' == $target[$key])
{
$cell = $this->getAlias($cell,$table);
}
// update version
if ('version' == $target[$key])
{
$cell = 1;
$version = true;
}
// set to insert array
if(in_array($key, $data['target_headers']) && is_numeric($cell))
{
$columns[] = $target[$key];
$values[] = $cell;
}
elseif(in_array($key, $data['target_headers']) && is_string($cell))
{
$columns[] = $target[$key];
$values[] = $db->quote($cell);
}
elseif(in_array($key, $data['target_headers']) && is_null($cell))
{
// if import data is null then set empty
$columns[] = $target[$key];
$values[] = "''";
}
}
// load the defaults
$columns[] = 'created_by';
$values[] = $db->quote($user->id);
$columns[] = 'created';
$values[] = $db->quote($todayDate);
if (!$version)
{
$columns[] = 'version';
$values[] = 1;
}
// Prepare the insert query.
$query
->insert($db->quoteName('#__questionsanswers_'.$table))
->columns($db->quoteName($columns))
->values(implode(',', $values));
// Set the query using our newly populated query object and execute it.
$db->setQuery($query);
$done = $db->execute();
if ($done)
{
$aId = $db->insertid();
// make sure the access of asset is set
QuestionsanswersHelper::setAsset($aId,$table);
}
}
else
{
return false;
}
}
return true;
}
}
return false;
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}
protected function getAlias($name,$type = false)
{
// sanitize the name to an alias
if (JFactory::getConfig()->get('unicodeslugs') == 1)
{
$alias = JFilterOutput::stringURLUnicodeSlug($name);
}
else
{
$alias = JFilterOutput::stringURLSafe($name);
}
// must be a uniqe alias
if ($type)
{
return $this->getUniqe($alias,'alias',$type);
}
return $alias;
}
/**
* Method to generate a uniqe value.
*
* @param string $field name.
* @param string $value data.
* @param string $type table.
*
* @return string New value.
*/
protected function getUniqe($value,$field,$type)
{
// insure the filed is always uniqe
while (isset($this->uniqeValueArray[$type][$field][$value]))
{
$value = JString::increment($value, 'dash');
}
$this->uniqeValueArray[$type][$field][$value] = $value;
return $value;
}
protected function getAliasesUsed($table)
{
// Get a db connection.
$db = JFactory::getDbo();
// first we check if there is a alias column
$columns = $db->getTableColumns('#__questionsanswers_'.$table);
if(isset($columns['alias'])){
// Create a new query object.
$query = $db->getQuery(true);
$query->select($db->quoteName(array('alias')));
$query->from($db->quoteName('#__questionsanswers_'.$table));
$db->setQuery($query);
$db->execute();
if ($db->getNumRows())
{
$aliases = $db->loadColumn();
foreach($aliases as $alias)
{
$this->uniqeValueArray[$table]['alias'][$alias] = $alias;
}
}
return true;
}
return false;
}
}