<?php

namespace App\Factory;
use Monolog\Formatter\LineFormatter;
use Monolog\Handler\RotatingFileHandler;
use Monolog\Handler\StreamHandler;
use Monolog\Logger;
use Psr\Log\LoggerInterface;

/**
* Factory.
*/
final class LoggerFactory
{
	/**
	* @var string
	*/
	private $path;
	
	/**
	* @var int
	*/
	private $level;
	
	/**
	* The constructor.
	* @param array $settings The settings
	*/
	
	public function __construct(array $settings)
	{
		$this->path = (string)$settings['path'];
		$this->level = (int)$settings['level'];
	}
	
	/**
	* @var array Handler
	*/
	private $handler = [];
	
	/**
	* Build the logger.
	*
	* @param string $name The name
	*
	* @return LoggerInterface The logger
	*/
	public function createInstance(string $name): LoggerInterface
	{
		$logger = new Logger($name);
		foreach ($this->handler as $handler) {
			$logger->pushHandler($handler);
		}
		$this->handler = [];
		return $logger;
	}
	
	/**
	* Add rotating file logger handler.
	*
	* @param string $filename The filename
	*
	* @param int $level The level (optional)
	*
	* @return LoggerFactory The logger factory
	*/
	public function addFileHandler(string $filename, int $level = null): self
	{
		$filename = sprintf('%s/%s', $this->path, $filename);
		
		$rotatingFileHandler = new RotatingFileHandler(
			$filename,
			0,
			$level ?? $this->level,
			true,
			0777
		);
		
		// The last "true" here tells monolog to remove empty []'s
		$rotatingFileHandler->setFormatter(
			new LineFormatter(null, null, false, true)
		);
		
		$this->handler[] = $rotatingFileHandler;
		return $this;
	}
	
	/**
	* Add a console logger.
	*
	* @param int $level The level (optional)
	*
	* @return self The instance
	*/
	public function addConsoleHandler(int $level = null): self
	{
		$streamHandler = new StreamHandler('php://stdout', $level ?? $this->level);
		$streamHandler->setFormatter(new LineFormatter(null, null, false, true));
		$this->handler[] = $streamHandler;
		return $this;
	}
	
}