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/**
***********************************************************************************************
* Class manages access to database table adm_photos
*
* @copyright 2004-2016 The Admidio Team
* @see http://www.admidio.org/
* @license https://www.gnu.org/licenses/gpl-2.0.html GNU General Public License v2.0 only
***********************************************************************************************
*/
/**
* @class TablePhotos
* Diese Klasse dient dazu ein Fotoveranstaltungsobjekt zu erstellen.
* Eine Fotoveranstaltung kann ueber diese Klasse in der Datenbank verwaltet werden.
*
* Beside the methods of the parent class there are the following additional methods:
*
* countImages($pho_id = 0) - Rekursive Funktion gibt die Anzahl aller Bilder
* inkl. der Unteralben zurueck
* shuffleImage($pho_id = 0) - Rekursive Funktion zum Auswaehlen eines
* Beispielbildes aus einem moeglichst hohen Album
* createFolder() - erzeugt den entsprechenden Ordner unter adm_my_files/photos
* deleteInDatabase($photo_id) - Rekursive Funktion die die uebergebene Veranstaltung
* und alle Unterveranstaltungen loescht
* deleteInFilesystem($folder) - Rekursive Funktion die alles innerhalb des uebergebenen
* Ordners mit Unterordnern und allen Dateien loescht
*/
class TablePhotos extends TableAccess
{
protected $hasChildAlbums; ///< Flag if this album has child albums
/**
* Constructor that will create an object of a recordset of the table adm_photos.
* If the id is set than the specific photo album will be loaded.
* @param \Database $database Object of the class Database. This should be the default global object @b $gDb.
* @param int $photoId The recordset of the photo album with this id will be loaded. If id isn't set than an empty object of the table is created.
*/
public function __construct(&$database, $photoId = 0)
{
$this->hasChildAlbums = null;
parent::__construct($database, TBL_PHOTOS, 'pho', $photoId);
}
/**
* Rekursive Funktion gibt die Anzahl aller Bilder inkl. der Unteralben zurueck
* pho_id noetig fuer rekursiven Aufruf
* @param int $phoId
* @return int
*/
public function countImages($phoId = 0)
{
$totalImages = 0;
// wurde keine ID uebergeben, dann Anzahl Bilder des aktuellen Albums ermitteln
if($phoId == 0)
{
$phoId = $this->getValue('pho_id');
$totalImages = $this->getValue('pho_quantity');
}
// alle Unteralben ermitteln
$sql = 'SELECT pho_id, pho_quantity
FROM '.TBL_PHOTOS.'
WHERE pho_pho_id_parent = '.$phoId.'
AND pho_locked = 0';
$childAlbumsStatement = $this->db->query($sql);
while($pho_row = $childAlbumsStatement->fetch())
{
$totalImages = $totalImages + $pho_row['pho_quantity'] + $this->countImages($pho_row['pho_id']);
}
return $totalImages;
}
/**
* Legt den Ordner fuer die Veranstaltung im Dateisystem an
* @return string[]
*/
public function createFolder()
{
$error = array('code' => '0', 'text' => '');
// Pfad in adm_my_files pruefen und ggf. anlegen
$myFilesPhotos = new MyFiles('PHOTOS');
if(!$myFilesPhotos->checkSettings())
{
$error['text'] = $myFilesPhotos->errorText;
$error['path'] = $myFilesPhotos->errorPath;
return $error;
}
// nun den Ordner fuer die Veranstaltung anlegen
$folderName = $this->getValue('pho_begin', 'Y-m-d'). '_'. $this->getValue('pho_id');
if(!$myFilesPhotos->createFolder($folderName, true))
{
$error['text'] = 'SYS_FOLDER_NOT_CREATED';
$error['path'] = 'adm_my_files/photos/'.$folderName;
}
return $error;
}
/**
* Deletes the selected photo album and all sub photo albums.
* After that the class will be initialize.
* @return bool @b true if no error occurred
*/
public function delete()
{
if($this->deleteInDatabase($this->getValue('pho_id')))
{
return parent::delete();
}
return false;
}
/**
* Rekursive Funktion die die uebergebene Veranstaltung und alle Unterveranstaltungen loescht
* @param int $photoId
* @return bool
*/
public function deleteInDatabase($photoId)
{
$returnValue = true;
$this->db->startTransaction();
// erst einmal rekursiv zur tiefsten Tochterveranstaltung gehen
$sql = 'SELECT pho_id
FROM '.TBL_PHOTOS.'
WHERE pho_pho_id_parent = '.$photoId;
$childAlbumStatement = $this->db->query($sql);
while($phoId = $childAlbumStatement->fetchColumn())
{
if($returnValue)
{
$returnValue = $this->deleteInDatabase((int) $phoId);
}
}
// nun DB-Eintrag und Ordner loeschen
if($returnValue)
{
// Ordnerpfad zusammensetzen
$folder = SERVER_PATH. '/adm_my_files/photos/'.$this->getValue('pho_begin', 'Y-m-d').'_'.$photoId;
// aktuellen Ordner incl. Unterordner und Dateien loeschen, falls er existiert
if(file_exists($folder))
{
// nun erst rekursiv den Ordner im Dateisystem loeschen
$myFilesPhotos = new MyFiles('PHOTOS');
$myFilesPhotos->setFolder($folder);
$returnValue = $myFilesPhotos->delete($folder);
}
if($returnValue)
{
// Veranstaltung jetzt in DB loeschen
$sql = 'DELETE FROM '.TBL_PHOTOS.'
WHERE pho_id = '.$photoId;
$this->db->query($sql);
}
}
$this->db->endTransaction();
return $returnValue;
}
/**
* Check if this album has one or more child albums.
* @return bool Return @b true if child albums exists.
*/
public function hasChildAlbums()
{
if($this->hasChildAlbums === null)
{
$sql = 'SELECT COUNT(*) AS count
FROM '.TBL_PHOTOS.'
WHERE pho_pho_id_parent = '.$this->getValue('pho_id');
$countChildAlbums = $this->db->query($sql);
if($countChildAlbums->fetchColumn() > 0)
{
$this->hasChildAlbums = true;
}
else
{
$this->hasChildAlbums = false;
}
}
return $this->hasChildAlbums;
}
/**
* Save all changed columns of the recordset in table of database. Therefore the class remembers if it's
* a new record or if only an update is necessary. The update statement will only update
* the changed columns. If the table has columns for creator or editor than these column
* with their timestamp will be updated.
* The current organization will be set per default.
* @param bool $updateFingerPrint Default @b true. Will update the creator or editor of the recordset if table has columns like @b usr_id_create or @b usr_id_changed
* @return bool If an update or insert into the database was done then return true, otherwise false.
*/
public function save($updateFingerPrint = true)
{
global $gCurrentOrganization;
if($this->new_record)
{
$this->setValue('pho_org_id', $gCurrentOrganization->getValue('org_id'));
}
return parent::save($updateFingerPrint);
}
/**
* Rekursive Funktion zum Auswaehlen eines Beispielbildes aus einem moeglichst hohen Album
* Rueckgabe eines Arrays mit allen noetigen Infos um den Link zu erstellen
* @param int $phoId
* @return array
*/
public function shuffleImage($phoId = 0)
{
$shuffleImage = array('shuffle_pho_id' => 0, 'shuffle_img_nr' => 0, 'shuffle_img_begin' => '');
// wurde keine ID uebergeben, dann versuchen das Zufallsbild aus dem aktuellen Album zu nehmen
if($phoId === 0)
{
$phoId = $this->getValue('pho_id');
$shuffleImage['shuffle_pho_id'] = $this->getValue('pho_id');
$shuffleImage['shuffle_img_begin'] = $this->getValue('pho_begin', 'Y-m-d');
if($this->getValue('pho_quantity') > 0)
{
$shuffleImage['shuffle_img_nr'] = mt_rand(1, $this->getValue('pho_quantity'));
}
}
if($shuffleImage['shuffle_img_nr'] == 0)
{
// kein Bild vorhanden, dann in einem Unteralbum suchen
$sql = 'SELECT *
FROM '.TBL_PHOTOS.'
WHERE pho_pho_id_parent = '.$phoId.'
AND pho_locked = 0
ORDER BY pho_quantity DESC';
$childAlbumsStatement = $this->db->query($sql);
while($phoRow = $childAlbumsStatement->fetch())
{
if($shuffleImage['shuffle_img_nr'] == 0)
{
$shuffleImage['shuffle_pho_id'] = $phoRow['pho_id'];
$shuffleImage['shuffle_img_begin'] = $phoRow['pho_begin'];
if($phoRow['pho_quantity'] > 0)
{
$shuffleImage['shuffle_img_nr'] = mt_rand(1, $phoRow['pho_quantity']);
}
else
{
$shuffleImage = $this->shuffleImage($phoRow['pho_id']);
}
}
}
}
return $shuffleImage;
}
}