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<?php
abstract class Item implements ItemInterface {
protected $Database = NULL;
protected $Attribute = NULL;
protected $Reflection = NULL;
#===============================================================================
# Abstract item constructor
#===============================================================================
public final function __construct($itemID, \Database $Database) {
$this->Database = $Database;
$this->Reflection = new ReflectionObject($this);
$attribute = "{$this->Reflection->getNamespaceName()}\\Attribute";
$exception = "{$this->Reflection->getNamespaceName()}\\Exception";
#===============================================================================
# Checking if item in database exists
#===============================================================================
$Statement = $Database->prepare(sprintf('SELECT * FROM %s WHERE id = ?', $attribute::TABLE));
$Statement->execute([$itemID]);
#===============================================================================
# Checking if retrieving data failed
#===============================================================================
if(!$this->Attribute = $Statement->fetchObject($attribute)) {
throw new $exception(sprintf('%s\\Item with ID %s does not exist', $this->Reflection->getNamespaceName(), (int) $itemID));
}
}
#===============================================================================
# Return attribute by name (short hand wrapper)
#===============================================================================
public function attr($attribute) {
return $this->Attribute->get($attribute);
}
#===============================================================================
# Return Attribute object
#===============================================================================
public final function getAttribute(): Attribute {
return $this->Attribute;
}
#===============================================================================
# Return unique ID
#===============================================================================
public final function getID(): int {
return $this->Attribute->get('id');
}
#===============================================================================
# Return previous item ID
#===============================================================================
public function getPrevID(): int {
$execute = 'SELECT id FROM %s WHERE time_insert < ? ORDER BY time_insert DESC LIMIT 1';
$attribute = "{$this->Reflection->getNamespaceName()}\\Attribute";
$Statement = $this->Database->prepare(sprintf($execute, $attribute::TABLE));
if($Statement->execute([$this->Attribute->get('time_insert')])) {
return $Statement->fetchColumn();
}
return 0;
}
#===============================================================================
# Return next item ID
#===============================================================================
public function getNextID(): int {
$execute = 'SELECT id FROM %s WHERE time_insert > ? ORDER BY time_insert ASC LIMIT 1';
$attribute = "{$this->Reflection->getNamespaceName()}\\Attribute";
$Statement = $this->Database->prepare(sprintf($execute, $attribute::TABLE));
if($Statement->execute([$this->Attribute->get('time_insert')])) {
return $Statement->fetchColumn();
}
return 0;
}
#===============================================================================
# Return unique ID based on specific field comparison with value
#===============================================================================
public static function getIDByField($field, $value, \Database $Database): int {
$attribute = (new ReflectionClass(get_called_class()))->getNamespaceName().'\\Attribute';
$Statement = $Database->prepare('SELECT id FROM '.$attribute::TABLE." WHERE {$field} = ?");
if($Statement->execute([$value])) {
return $Statement->fetchColumn();
}
return 0;
}
}
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