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<?php
/* --------------------------------------------------------------
LanguageProvider.inc.php 2016-05-31
Gambio GmbH
http://www.gambio.de
Copyright (c) 2016 Gambio GmbH
Released under the GNU General Public License (Version 2)
[http://www.gnu.org/licenses/gpl-2.0.html]
--------------------------------------------------------------
*/
/**
* Class LanguageProvider
*
* @category System
* @package Shared
*/
class LanguageProvider implements LanguageProviderInterface
{
/**
* Database connection.
* @var CI_DB_query_builder
*/
protected $db;
/**
* LanguageProvider constructor.
*
* @param CI_DB_query_builder $db Database connection.
*/
public function __construct(CI_DB_query_builder $db)
{
$this->db = $db;
}
/**
* Returns the language IDs.
*
* @throws UnexpectedValueException If no ID has been found.
* @throws InvalidArgumentException If ID is not valid.
*
* @return IdCollection
*/
public function getIds()
{
// Database query.
$query = $this->db->select('languages_id')->from('languages')->order_by('languages_id', 'ASC');
// Array in which the fetched languages IDs will be pushed as IdType to.
$fetchedIds = array();
// Iterate over each found row and push ID as IdType to array.
foreach($query->get()->result_array() as $row)
{
$id = (integer)$row['languages_id'];
$fetchedIds[] = new IdType($id);
}
// Throw exception if no ID has been found.
if(empty($fetchedIds))
{
throw new UnexpectedValueException('No language IDs were found in the database');
}
return MainFactory::create('IdCollection', $fetchedIds);
}
/**
* Returns the language codes.
*
* @throws UnexpectedValueException If no code has been found.
* @throws InvalidArgumentException If code is not valid.
*
* @return KeyValueCollection
*/
public function getCodes()
{
// Database query.
$query = $this->db->select('code')->from('languages')->order_by('languages_id', 'ASC');
// Array in which the fetched languages codes will be pushed as StringType to.
$fetchedCodes = array();
// Iterate over each found row and push code as StringType to array.
foreach($query->get()->result_array() as $row)
{
$code = $row['code'];
$fetchedCodes[] = new LanguageCode(new StringType($code));
}
// Throw exception if no code has been found.
if(empty($fetchedCodes))
{
throw new UnexpectedValueException('No language codes were found in the database');
}
return MainFactory::create('KeyValueCollection', $fetchedCodes);
}
/**
* Returns the language code from a specific language, selected by the language ID.
*
* @param IdType $id Language ID.
*
* @throws UnexpectedValueException If no code has been found.
* @throws InvalidArgumentException If code is not valid.
*
* @return LanguageCode
*/
public function getCodeById(IdType $id)
{
// Database query.
$this->db->select('code')->from('languages')->where('languages_id', $id->asInt());
// Fetch data from database and save.
$data = $this->db->get()->row_array();
// Throw error if no code has been found.
if($data === null)
{
throw new UnexpectedValueException('No language code has been found');
}
return new LanguageCode(new StringType($data['code']));
}
/**
* Returns the directory from the a specific language, selected by the language ID.
*
* @param IdType $id Language ID.
*
* @throws UnexpectedValueException If no directory has been found.
* @throws InvalidArgumentException If code is not valid.
*
* @return string
*/
public function getDirectoryById(IdType $id)
{
// Database query.
$this->db->select('directory')->from('languages')->where('languages_id', $id->asInt());
// Fetch data from database and save.
$data = $this->db->get()->row_array();
// Throw error if no value has been found.
if($data === null)
{
throw new UnexpectedValueException('No language directory has been found');
}
// Return language directory.
$directory = $data['directory'];
return $directory;
}
/**
* Returns the charset from the a specific language, selected by the language ID.
*
* @param IdType $id Language ID.
*
* @throws UnexpectedValueException If no charset has been found.
*
* @return string
*/
public function getCharsetById(IdType $id)
{
// Database query.
$this->db->select('language_charset')->from('languages')->where('languages_id', $id->asInt());
// Fetch data from database and save.
$data = $this->db->get()->row_array();
// Throw error if no value has been found.
if($data === null)
{
throw new UnexpectedValueException('No language charset has been found');
}
// Return language charset.
$charset = $data['language_charset'];
return $charset;
}
/**
* Returns the ID from the a specific language, selected by the language code.
*
* @param LanguageCode $code Language code.
*
* @throws UnexpectedValueException If no ID has been found.
*
* @return int
*/
public function getIdByCode(LanguageCode $code)
{
// Database query.
$this->db->select('languages_id')->from('languages')->where('code', $code->asString());
// Fetch data from database and save.
$data = $this->db->get()->row_array();
// Throw error if no value has been found.
if($data === null)
{
throw new UnexpectedValueException('No language ID has been found');
}
// Return language ID.
$id = (int)$data['languages_id'];
return $id;
}
/**
* Returns the directory from the a specific language, selected by the language code.
*
* @param LanguageCode $code Language code.
*
* @throws UnexpectedValueException If no directory has been found.
*
* @return string
*/
public function getDirectoryByCode(LanguageCode $code)
{
// Database query.
$this->db->select('directory')->from('languages')->where('code', $code->asString());
// Fetch data from database and save.
$data = $this->db->get()->row_array();
// Throw error if no value has been found.
if($data === null)
{
throw new UnexpectedValueException('No language directory has been found');
}
// Return language directory.
$directory = $data['directory'];
return $directory;
}
/**
* Returns the charset from the a specific language, selected by the language code.
*
* @param LanguageCode $code Language code.
*
* @throws UnexpectedValueException If no directory has been found.
*
* @return string
*/
public function getCharsetByCode(LanguageCode $code)
{
// Database query.
$this->db->select('language_charset')->from('languages')->where('code', $code->asString());
// Fetch data from database and save.
$data = $this->db->get()->row_array();
// Throw error if no value has been found.
if($data === null)
{
throw new UnexpectedValueException('No language charset has been found');
}
// Return language directory.
$charset = $data['language_charset'];
return $charset;
}
/**
* Returns the active language codes.
*
* @throws InvalidArgumentException If code is not valid.
*
* @return KeyValueCollection
*/
public function getActiveCodes()
{
// Database query.
$query = $this->db->select('code')->from('languages')->where('status', 1);
// Array in which the fetched languages codes will be pushed as StringType to.
$fetchedCodes = array();
// Iterate over each found row and push code as StringType to array.
foreach($query->get()->result_array() as $row)
{
$code = $row['code'];
$fetchedCodes[] = new LanguageCode(new StringType($code));
}
// Throw exception if no active code has been found.
if(empty($fetchedCodes))
{
throw new UnexpectedValueException('No active language codes were found in the database');
}
return MainFactory::create('KeyValueCollection', $fetchedCodes);
}
/**
* Returns the icon for a specific language by a given language code.
*
* @param LanguageCode $code The given language code
*
* @throws UnexpectedValueException If no icon has been found.
*
* @return string
*/
public function getIconFilenameByCode(LanguageCode $code)
{
// Database query.
$this->db->select('image')->from('languages')->where('code', $code->asString());
// Fetch data from database and save.
$data = $this->db->get()->row_array();
// Throw error if no value has been found.
if($data === null)
{
throw new UnexpectedValueException('No language icon has been found');
}
// Return language icon filename.
$icon = $data['image'];
return $icon;
}
/**
* Returns the default language code.
*
* @throws InvalidArgumentException If no default code exists.
*
* @return string
*/
public function getDefaultLanguageCode()
{
$result = $this->db->select('configuration_value')
->from('configuration')
->where('configuration_key', 'DEFAULT_LANGUAGE')
->get()
->row_array();
if($result === null)
{
throw new UnexpectedValueException('No default language has been found');
}
return $result['configuration_value'];
}
/**
* Returns the default language ID.
*
* @throws InvalidArgumentException If no default code exists.
*
* @return int
*/
public function getDefaultLanguageId()
{
$result = $this->db->select('languages_id')
->from('languages')
->join('configuration', 'languages.code = configuration.configuration_value')
->where('configuration.configuration_key', 'DEFAULT_LANGUAGE')
->get()
->row_array();
if($result === null)
{
throw new UnexpectedValueException('No default language has been found');
}
return (int)$result['languages_id'];
}
}