Logger.php
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	<?php

	namespace LdapRecord\Events;

	use LdapRecord\Auth\Events\Event as AuthEvent;
	use LdapRecord\Auth\Events\Failed;
	use LdapRecord\Models\Events\Event as ModelEvent;
	use LdapRecord\Query\Events\QueryExecuted as QueryEvent;
	use Psr\Log\LoggerInterface;
	use ReflectionClass;

	class Logger
	{
	/**
	* The logger instance.
	*
	* @var LoggerInterface\|null
	*/
	protected $logger;

	/**
	* Constructor.
	*
	* @param LoggerInterface\|null $logger
	*/
	public function __construct(LoggerInterface $logger = null)
	{
	$this->logger = $logger;
	}

	/**
	* Logs the given event.
	*
	* @param mixed $event
	* @return void
	*/
	public function log($event)
	{
	switch (true) {
	case $event instanceof AuthEvent:
	$this->auth($event);
	break;
	case $event instanceof ModelEvent:
	$this->model($event);
	break;
	case $event instanceof QueryEvent:
	$this->query($event);
	break;
	}
	}

	/**
	* Logs an authentication event.
	*
	* @param AuthEvent $event
	* @return void
	*/
	public function auth(AuthEvent $event)
	{
	if (isset($this->logger)) {
	$connection = $event->getConnection();

	$message = "LDAP ({$connection->getHost()})"
	." - Operation: {$this->getOperationName($event)}"
	." - Username: {$event->getUsername()}";

	$result = null;
	$type = 'info';

	if (is_a($event, Failed::class)) {
	$type = 'warning';
	$result = " - Reason: {$connection->getLastError()}";
	}

	$this->logger->$type($message.$result);
	}
	}

	/**
	* Logs a model event.
	*
	* @param ModelEvent $event
	* @return void
	*/
	public function model(ModelEvent $event)
	{
	if (isset($this->logger)) {
	$model = $event->getModel();

	$on = get_class($model);

	$connection = $model->getConnection()->getLdapConnection();

	$message = "LDAP ({$connection->getHost()})"
	." - Operation: {$this->getOperationName($event)}"
	." - On: {$on}"
	." - Distinguished Name: {$model->getDn()}";

	$this->logger->info($message);
	}
	}

	/**
	* Logs a query event.
	*
	* @param QueryEvent $event
	* @return void
	*/
	public function query(QueryEvent $event)
	{
	if (isset($this->logger)) {
	$query = $event->getQuery();

	$connection = $query->getConnection()->getLdapConnection();

	$selected = implode(',', $query->getSelects());

	$message = "LDAP ({$connection->getHost()})"
	." - Operation: {$this->getOperationName($event)}"
	." - Base DN: {$query->getBaseDn()}"
	." - Filter: {$query->getQuery()}"
	." - Selected: ({$selected})"
	." - Time Elapsed: {$event->getTime()}";

	$this->logger->info($message);
	}
	}

	/**
	* Returns the operational name of the given event.
	*
	* @param mixed $event
	* @return string
	*/
	protected function getOperationName($event)
	{
	return (new ReflectionClass($event))->getShortName();
	}
	}

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