<?php
class Membre {

	const DEFAULT_BANNER = "pictures/bande.png";
	
	protected $ID = NULL;
	protected $IDLoaded = FALSE;
	protected $pseudo = NULL;
	protected $pseudoLoaded = FALSE;
	protected $hashedPassword = NULL;
	protected $hashedPasswordLoaded = FALSE;
	protected $adminLevel = NULL;
	protected $adminLevelLoaded = FALSE;
	protected $dateCreation = NULL;
	protected $dateCreationLoaded = FALSE;
	protected $requiredBanner = NULL;
	protected $requiredBannerLoaded = FALSE;
	protected $personnalMessage;
	protected $personnalMessageLoaded = FALSE;
	
	protected $count = NULL;
	
	protected $where;
	protected $whereArgs;
	
	protected const ATTRIBUTES = array('ID','pseudo','hashedPassword','dateCreation','adminLevel','data');
	
	
	
	protected function __construct($where,$whereArgs = array()) {
		$this->where = $where;
		$this->whereArgs = $whereArgs;
	}
	
	public static function me(){
		if(!isset($_SESSION['session_id']))
			return NO_SESSION_ID;
		return new Membre('WHERE ID=?');
	}
	
	public static function getFromAttributes($restrictions){
		$whereCommands = array();
		$restrictionValues = array();
		foreach ($restrictions as $restriction){
			$whereCommand = NULL;
			$attribute = $restriction[0];
			$json = FALSE;
			$operator = NULL;
			$value = NULL;
			try {
				switch ($attribute){
					case 'ID':
						if($restriction[2][0] !== '0'){
							echo 'Error : the type "'.$restriction[2][0].'" is not allowed for the attribute '.$attribute;
							exit;
						}
						$value = intval($restriction[2][1]);
						$operator = Utility::getIntegerSqlOperator($restriction[1]);
						break;
					case 'pseudo':
						if($restriction[2][0] !== '"'){
							echo 'Error : the type "'.$restriction[2][0].'" is not allowed for the attribute '.$attribute;
							exit;
						}
						$value = '"'.strval($restriction[2][1]).'"';
						$operator = Utility::getStringSqlOperator($restriction[1]);
						break;
					case 'hashedPseudo':
						if($restriction[2][0] !== '"'){
							echo 'Error : the type "'.$restriction[2][0].'" is not allowed for the attribute '.$attribute;
							exit;
						}
						$value = '"'.strval($restriction[2][1]).'"';
						$operator = Utility::getStringSqlOperator($restriction[1]);
						break;
					case 'adminLevel':
						if($restriction[2][0] !== '0'){
							echo 'Error : the type "'.$restriction[2][0].'" is not allowed for the attribute '.$attribute;
							exit;
						}
						$value = intval($restriction[2][1]);
						$operator = Utility::getIntegerSqlOperator($restriction[1]);
						break;
					case 'dateCreation':
						if($restriction[2][0] !== '"'){//TODO add type date
							echo 'Error : the type "'.$restriction[2][0].'" is not allowed for the attribute '.$attribute;
							exit;
						}
						$value = '"'.$restriction[2][1].'"';
						$operator = Utility::getDateSqlOperator($restriction[1]);
						break;
					case 'requiredBanner'://FIXME jsonMysqlProblem
						$json=TRUE;
						if($restriction[2][0] !== '"'){
							echo 'Error : the type "'.$restriction[2][0].'" is not allowed for the attribute '.$attribute;
							exit;
						}
						$value = '"'.strval($restriction[2][1]).'"';
						$operator = Utility::getStringSqlOperator($restriction[1]);
						break;
					case 'personnalMessage':
						$json=TRUE;
						if($restriction[2][0] !== '"'){
							echo 'Error : the type "'.$restriction[2][0].'" is not allowed for the attribute '.$attribute;
							exit;
						}
						$value = '"'.strval($restriction[2][1]).'"';
						$operator = Utility::getStringSqlOperator($restriction[1]);
						break;
					default:
						echo 'Undefined attribute "'.$attribute.'" for the class Membre';
						exit;
				}
			}catch(InvalidOperatorException $e){
				echo $e->getMessage().' when reading attribute "'.$attribute.'"';
				exit;
			}
			
			$restrictionValues[] = $value;
			if($json){
				$whereCommand = '((data->"$.'.$attribute.'" IS NOT NULL) AND (data->"$.'.$attribute.'" '.$operator.' ? ))';
			}else{
				$whereCommand = $attribute . ' ' . $operator . ' ' . $value;
			}
			$whereCommands[] = $whereCommand;
		}
		$wherePart = "";
		if(count($whereCommands) >0)
			$wherePart = 'WHERE '.implode(' AND ',$whereCommands);
		
		$command = 'SELECT * FROM membres '.$wherePart;
		$req = $GLOBALS['bdd']->prepare($command);
		$req->execute($restrictionValues);
		//echo $command.'</br>';
		if($req->errorInfo()[0] != 0)
			echo 'Erreur SQL, veuillez verifier les selecteurs';
		$out = array();
		while($rep = $req->fetch())
			$out[] = new Membre($rep['ID']);
		
		//Choose return value
		switch(count($out)){
			case 0:
				return NULL;
			case 1:
				return $out[0];
			default:
				return $out;
		}
	}
	
	public static function with($conditions){//[ { 'adminLevel' , '>=' , 24 } , { requiredBanner , '/home/banner.png' } , { email } ]
		$wheres = array();
		$whereAttributes = array();
		foreach($conditions as $condition){
			//TODO support custom conditions (OR, NAND)
			//TODO test !is_array()
			switch(count($condition)){
				case 0:
					throw new MalformedConditionException($conditions,'Une condition ne peut pas être NULL , voyons ...'));
				break;
				case 1:
					assert(in_array($condition[0],Membre::ATTRIBUTES),new MalformedConditionException($conditions,'$condition[0] n\'est pas un attribut de la classe membre !'));
					$wheres[] = $condition[0] . ' NOT NULL';
				break;
				case 2:
					assert(in_array($condition[0],Membre::ATTRIBUTES),new MalformedConditionException($conditions,'$condition[0] n\'est pas un attribut de la classe membre !'));
					$wheres[] = $condition[0] . ' = ?';
					$whereAttributes[] = $condition[1];
				break;
				case 3:
					assert(in_array($condition[0],Membre::ATTRIBUTES),new MalformedConditionException($conditions,'$condition[0] n\'est pas un attribut de la classe membre !'));
					$operator = Utility::getSqlOperator($condition[2]);
					assert($operator !== NULL,new MalformedConditionException($conditions,'$condition[2] n\'est pas un opérateur valide !'));
					$wheres[] = $condition[0] . ' ' . $operator . ' ?';
					$whereAttributes[] = $condition[1];
				break;
				default:
					throw new MalformedConditionException($conditions,'Cette version du site ne comprends pas encore les conditions avec plus de trois paramètres (' . json_encode($condition); . ')');
			}
		}
		$where = implode(' AND ',$wheres);
		return new Membre($where,$whereAttributes);
	}
	
	
	
	public static function withPseudo($pseudo){
		return new Membre('WHERE pseudo=?',array($pseudo));
	}
	
	public static function withAdminLevel($level){
		return new Membre('WHERE adminLevel=?',array($level));
	}
	
	public static function withAdminLevelGreaterThan($level){
		return new Membre('WHERE adminLevel>?',array($level));
	}
	
	public static function withAdminLevelLowerThan($level){
		return new Membre('WHERE adminLevel<?',array($level));
	}
	
	public static function withDateCreation($date){
		return new Membre('WHERE dateCreation=?',array($pseudo));
	}
	
	public static function withDateCreationLaterThan($date){
		return new Membre('WHERE dateCreation>?',array($pseudo));
	}
	
	public static function withDateCreationEarlierThan($date){
		return new Membre('WHERE dateCreation<?',array($pseudo));
	}
	
	
	
	public function checkPassword($password) {
		return password_verify ($password, $this->getHashedPassword() );
	}
	
	public function __toString(){
		return 'Membre with "' . $where . '" args:{' . $whereArgs . '}';
	}
	/**
	
		@returns
		Si le Membre est unique et que le dernier paramètre est faux (valeur par défaut)
		@return [ 'ID' => 12 , 'pseudo' => "Mysaa" ]
		Si le Membre est plurier ou si le dernier paramètre est vrai
		@return [ { 'ID' => 12 , 'pseudo' => "Mysaa" } , { 'ID' => 11 , 'pseudo' => "Zlopeg" } ]
	
	
	**/
	public function get(){
		$objects = func_get_args();
		assert(count($objects) < 1, new BadMethodCallException('La methode get requiert au moins un argument'));
		$array = end($objects);
		if(gettype($array) !== 'boolean')
			$array=FALSE;
		else
			array_pop($objects);
		assert(count($objectsCount) < 1, new BadMethodCallException('La methode get requiert au moins un nom de paramètre à retourner !'));
		$toAsk = array();
		$toGive = array();
		foreach($objects as $object){
			assert(!is_string($object), new InvalidArgumentException('"$object" n\'est pas une chaine de caractère ... ça devrait'))
			assert(in_array($object,Membre::ATTRIBUTES),new InvalidArgumentException('$object n\'est pas un attribut de la classe membre !'));
			if($this->{$object . 'Loaded'})
				array_push($toGive,$object);
			else
				array_push($toAsk,$object);
		}
		$result = array();
		if(count($toAsk)>0){
			$req = $GLOBALS['bdd']->prepare('SELECT ' . implode(',',$toAsk) . 'FROM membres WHERE ' . $this->where);
			$req->execute($this->whereArgs);
			$sqlResult = $req->fetchAll(PDO::FETCH_COLUMN | PDO::FETCH_GROUP);
			foreach($toAsk as $item){
				if(!isset($this->count))$this->count = count($item);
				$this->$item = $sqlResult[$item];
				$this->{$item . 'Loaded'} = TRUE;
				$result[$item] = $sqlResult[$item];
			}
		}
		foreach($toGive as $item)
			$result[$item] = $this->$item;
		
		/* RETURN */
		
		if(count($result) === 0)
			return $array?array():NULL;
			
		$return = array()
		if(!$array AND $this->count === 1)
			foreach($result as $item => $values)$return[$key] = $values[0];
		else
			foreach($result as $key=>$res)
				for($i=0;$i<$this->count;$i++)
					$return[$i][$key] = $res[$i]
		return $return;
	}
	
	public function count(){
		if($this->count)return $this->count;
		$req = $GLOBALS['bdd']->prepare('SELECT COUNT(*) AS count FROM membres WHERE ' . $this->where);
		$req->execute($this->whereArgs);
		return $req->fetch()['count'];
	}
	
	
	
	
	
	
	
	
	
	public function __call($funcName,$params){
		if(preg_match('^get',$funcName)){// TODO Support multi get ("getPseudoAndAdminLevel")
			$attributeName = lcfirst(substr($funcName,3))
			assert(in_array($attributeName,Membre::ATTRIBUTES), new BadMethodCallException('$attributeName n\'est pas un attribut de la classe membre !'));
			$return = call_user_func_array(array($this,'get'),array($attributeName));
			return (count($return)===1)?$return[0]:$return;
		}
	}
	
	public function get(){
		$objects = func_get_args();
		assert(count($objects) < 2, new BadMethodCallException('La methode set requiert au moins deux argument'));
		$objectsCount = count($objects);
		assert($objectsCount % 2 === 0, new BadMethodCallException('La methode set requiert un nombre pair d\'arguments'));
		foreach($objects as $object){
			assert(!is_string($object), new InvalidArgumentException('"$object" n\'est pas une chaine de caractère ... ça devrait'))
			assert(in_array($object,Membre::ATTRIBUTES),new InvalidArgumentException('$object n\'est pas un attribut de la classe membre !'));
			if($this->{$object . 'Loaded'})//FIXME to complete get -> set
				array_push($toGive,$object);
			else
				array_push($toAsk,$object);
		}
		$result = array();
		if(count($toAsk)>0){
			$req = $GLOBALS['bdd']->prepare('SELECT ' . implode(',',$toAsk) . 'FROM membres WHERE ' . $this->where);
			$req->execute($this->whereArgs);
			$sqlResult = $req->fetchAll(PDO::FETCH_COLUMN | PDO::FETCH_GROUP);
			foreach($toAsk as $item){
				if(!isset($this->count))$this->count = count($item);
				$this->$item = $sqlResult[$item];
				$this->{$item . 'Loaded'} = TRUE;
				$result[$item] = $sqlResult[$item];
			}
		}
		foreach($toGive as $item)
			$result[$item] = $this->$item;
		
		/* RETURN */
		
		if(count($result) === 0)
			return $array?array():NULL;
			
		$return = array()
		if(!$array AND $this->count === 1)
			foreach($result as $item => $values)$return[$key] = $values[0];
		else
			foreach($result as $key=>$res)
				for($i=0;$i<$this->count;$i++)
					$return[$i][$key] = $res[$i]
		return $return;
	}
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	private function decodeData($data) {
		$jsonData = json_decode ( $data ,TRUE);
		// Set the data's required_banner if it is defined , otherwise sets the DEFAULT_BANNER
		$this->requiredBanner = $jsonData ['requiredBanner'] ?? self::DEFAULT_BANNER;
		$this->personnalMessage = $jsonData ['personnalMessage'] ?? NULL;
	}
	
	
	//Getters
	public function getID(){
		return $this->ID;
	}
	
	public function getPseudo(){
		return $this->pseudo;
	}
	
	public function getAdminLevel() {
		return $this->adminLevel;
	}
	
	public function getDateCreation(){
		return $this->dateCreation;
	}
	
	public function getRequiredBanner() {
		return $this->requiredBanner;
	}
	
	public function getPersonnalMessage(){
		return $this->personnalMessage;
	}
	
	
	//Useful getters
	public function isAdminLevelLowerThan($max){
		return $this->adminLevel<$max;
	}
	
	public function isAdminLevelGreaterThan($min){
		return $this->adminLevel>$min;
	}
	
	public function isAdminLevelLowerOrEqualThan($max){
		return $this->adminLevel<$max;
	}
	
	public function isAdminLevelGreaterOrEqualThan($min){
		return $this->adminLevel>$max;
	}
	
	public function hasPersonnalMessage() {
		return isset ( $this->personnalMessage );
	}
	
	public function showPersonnalMessage() {
		$msg = $this->personnalMessage;
		$this->setPersonnalMessage = NULL;
		return $msg;
	}
	
	//Setters
	public function changePassword($newPassword){
		if(strlen($newPassword)>255)
			return Membre::PASSWORD_TOO_LONG;
		$req = $GLOBALS['bdd']->prepare('UPDATE membres SET hashedPassword=? WHERE ID=?');
		$req->execute(array(password_hash ( $newPassword, PASSWORD_DEFAULT ),$this->ID));
		return Membre::PASSWORD_CHANGED;
	}
	
	public function setAttribute($attribute,$value,$valueType){
		$json=FALSE;
		switch ($attribute){
			case 'ID':
				if($valueType !== '0'){
					echo 'Error : the type "'.$valueType.'" is not allowed for the attribute '.$attribute;
					exit;
				}
				$value = intval($value);
				break;
			case 'pseudo':
				if($valueType !== '"'){
					echo 'Error : the type "'.$valueType.'" is not allowed for the attribute '.$attribute;
					exit;
				}
				$value = '"'.strval($value).'"';
				break;
			case 'hashedPseudo':
				if($valueType !== '"'){
					echo 'Error : the type "'.$valueType.'" is not allowed for the attribute '.$attribute;
					exit;
				}
				$value = '"'.strval($value).'"';
				break;
			case 'adminLevel':
				if($valueType !== '0'){
					echo 'Error : the type "'.$valueType.'" is not allowed for the attribute '.$attribute;
					exit;
				}
				$value = intval($value);
				break;
			case 'dateCreation':
				if($valueType !== '"'){
					echo 'Error : the type "'.$valueType.'" is not allowed for the attribute '.$attribute;
					exit;
				}
				$value = '"'.$value.'"';
				break;
			case 'requiredBanner'://FIXME jsonMysqlProblem
				$json=TRUE;
				if($valueType !== '"'){
					echo 'Error : the type "'.$valueType.'" is not allowed for the attribute '.$attribute;
					exit;
				}
				$value = '"'.strval($value).'"';
				break;
			case 'personnalMessage':
				$json=TRUE;
				if($valueType !== '"'){
					echo 'Error : the type "'.$valueType.'" is not allowed for the attribute '.$attribute;
					exit;
				}
				$value = '"'.strval($value).'"';
				break;
			default:
				echo 'Undefined attribute "'.$attribute.'" for the class Membre';
				exit;
		}	
			
		$restrictionValues[] = $value;
		if($json){
			//TODO Set command for json
		}else{
			$command = 'UPDATE membres SET ' . $attribute . '=' . $value . ' WHERE ID=' . $this->ID;
		}
		echo $command.'</br>';
		$req = $GLOBALS['bdd']->prepare($command);
		$req->execute(array());
		if($req->errorInfo()[0] != 0){
			echo 'Eine MYSQL Exception hat geworft. Einschuldigung';
			exit;
		}
	}
	
	
	/**
	 * 
	 * @return Objects which matchs the specified restrictions
	 */
	public static function getFromAttributes($restrictions){
		$whereCommands = array();
		$restrictionValues = array();
		foreach ($restrictions as $restriction){
			$whereCommand = NULL;
			$attribute = $restriction[0];
			$json = FALSE;
			$operator = NULL;
			$value = NULL;
			try {
				switch ($attribute){
					case 'ID':
						if($restriction[2][0] !== '0'){
							echo 'Error : the type "'.$restriction[2][0].'" is not allowed for the attribute '.$attribute;
							exit;
						}
						$value = intval($restriction[2][1]);
						$operator = Utility::getIntegerSqlOperator($restriction[1]);
						break;
					case 'pseudo':
						if($restriction[2][0] !== '"'){
							echo 'Error : the type "'.$restriction[2][0].'" is not allowed for the attribute '.$attribute;
							exit;
						}
						$value = '"'.strval($restriction[2][1]).'"';
						$operator = Utility::getStringSqlOperator($restriction[1]);
						break;
					case 'hashedPseudo':
						if($restriction[2][0] !== '"'){
							echo 'Error : the type "'.$restriction[2][0].'" is not allowed for the attribute '.$attribute;
							exit;
						}
						$value = '"'.strval($restriction[2][1]).'"';
						$operator = Utility::getStringSqlOperator($restriction[1]);
						break;
					case 'adminLevel':
						if($restriction[2][0] !== '0'){
							echo 'Error : the type "'.$restriction[2][0].'" is not allowed for the attribute '.$attribute;
							exit;
						}
						$value = intval($restriction[2][1]);
						$operator = Utility::getIntegerSqlOperator($restriction[1]);
						break;
					case 'dateCreation':
						if($restriction[2][0] !== '"'){//TODO add type date
							echo 'Error : the type "'.$restriction[2][0].'" is not allowed for the attribute '.$attribute;
							exit;
						}
						$value = '"'.$restriction[2][1].'"';
						$operator = Utility::getDateSqlOperator($restriction[1]);
						break;
					case 'requiredBanner'://FIXME jsonMysqlProblem
						$json=TRUE;
						if($restriction[2][0] !== '"'){
							echo 'Error : the type "'.$restriction[2][0].'" is not allowed for the attribute '.$attribute;
							exit;
						}
						$value = '"'.strval($restriction[2][1]).'"';
						$operator = Utility::getStringSqlOperator($restriction[1]);
						break;
					case 'personnalMessage':
						$json=TRUE;
						if($restriction[2][0] !== '"'){
							echo 'Error : the type "'.$restriction[2][0].'" is not allowed for the attribute '.$attribute;
							exit;
						}
						$value = '"'.strval($restriction[2][1]).'"';
						$operator = Utility::getStringSqlOperator($restriction[1]);
						break;
					default:
						echo 'Undefined attribute "'.$attribute.'" for the class Membre';
						exit;
				}
			}catch(InvalidOperatorException $e){
				echo $e->getMessage().' when reading attribute "'.$attribute.'"';
				exit;
			}
			
			$restrictionValues[] = $value;
			if($json){
				$whereCommand = '((data->"$.'.$attribute.'" IS NOT NULL) AND (data->"$.'.$attribute.'" '.$operator.' ? ))';
			}else{
				$whereCommand = $attribute . ' ' . $operator . ' ' . $value;
			}
			$whereCommands[] = $whereCommand;
		}
		$wherePart = "";
		if(count($whereCommands) >0)
			$wherePart = 'WHERE '.implode(' AND ',$whereCommands);
		
		$command = 'SELECT * FROM membres '.$wherePart;
		$req = $GLOBALS['bdd']->prepare($command);
		$req->execute($restrictionValues);
		//echo $command.'</br>';
		if($req->errorInfo()[0] != 0)
			echo 'Erreur SQL, veuillez verifier les selecteurs';
		$out = array();
		while($rep = $req->fetch())
			$out[] = new Membre($rep['ID']);
		
		//Choose return value
		switch(count($out)){
			case 0:
				return NULL;
			case 1:
				return $out[0];
			default:
				return $out;
		}
	}
	
	public static function getFromPseudo($pseudo){
		return Membre::getFromAttributes(array(['pseudo','=',['"',$pseudo]]));
	}
	
	public static function getFromAdminLevel($level){
		return Membre::getFromAttributes(array(['adminLevel','=',['0',$level]]));
	}
	
	public static function getFromDateCreation($date){
		return Membre::getFromAttributes(array(['dateCreation','=',['0',$date]]));
	}
	
	public static function getCreatedLaterThan($date){
		return Membre::getFromAttributes(array(['dateCreation','>',['"',$date]]));
	}
	
	public static function getCreatedEarlierThan($date){
		return Membre::getFromAttributes(array(['dateCreation','<',['"',$date]]));
	}
	
	public static function getAdminGreaterThan($min){
		return Membre::getFromAttributes(array(['adminLevel','>',['0',$min]]));
	}
	
	public static function getAdminLowerThan($max){
		return Membre::getFromAttributes(array(['adminLevel','<',['0',$max]]));
	}

	
	
	
	//Membre creator
	public static function registerPerson($pseudo, $mdp) {
		if (Membre::getFromPseudo($pseudo))
			return Membre::USED_USERNAME;
		$req = $GLOBALS ['bdd']->prepare ('INSERT INTO membres(pseudo,mdp,date_creation) VALUES (?,?,NOW())');
		$req->execute (array($pseudo,password_hash( $mdp, PASSWORD_DEFAULT)));
		return Membre::PERSON_REGISTERED;
	}
	
	//Operateurs
	public function __is_identical($copain){
		return $this->getID() == $copain->getID();
	}

	
	//Outputs texts
	
	const NO_SESSION_ID = 0;
	
	//changePassword
	const PASSWORD_TOO_LONG = 'Le mot de passe est trop long ! (Max : 255 caract&egrave;res)';
	const PASSWORD_CHANGED = 'Le mot de passe a bien &eacute;t&eacute; chang&eacute;';
	
	//registerPerson
	const USED_USERNAME = 'Le pseudonyme est d&eacute;j&agrave; utilis&eacute;';
	const PERSON_REGISTERED = 'Le membre a bien &eacute;t&eacute; inscrit !';
}