<?php

class PartnernettLogger {

	private $_path;
	private $_log_files = array();
	private $fileNumber = 0;

	public function __construct() {
		//$this->_path = wp_upload_dir()["basedir"] . "/logs";
		$this->_log_files = array(
			"Debug" => "files/debug.log",
			"Error" => "files/error.log",
			"Mail" => "files/mail.log",
			"UserLogin" => "files/user_login.log",
			"UserChoices" => "files/user_choices.log",
			"Stacktrace" => "files/stacktrace.log"
		);
		$this->_createLogfilesIfNotExists($this->_log_files);
	}

	private function _renameFile($path){
		$logFiles = 5;
		for($i = $logFiles; $i > 0; $i--){
			$newPath = $path.".".$i;
			$currentFileNumber = $i;

			if(file_exists($path.".".$logFiles)){
				unlink($path.".".$logFiles) or die("Couldn't delete file");
			}

			if (file_exists($newPath)){
				rename($newPath, $path.".".++$currentFileNumber);
			}
		}
		rename($path, $path.".1");

		$f = @fopen($path, 'x+');
		@fclose($f);
	}

	/** returns void **/
	private function _createLogfilesIfNotExists($input_array) {
		foreach ($input_array as $type=>$path) {
			if (file_exists($path)) {
				$fileSize = filesize($path);

				if($fileSize > 500){
					$this->_renameFile($path);
				}

				continue;
			}
			$f = @fopen($path, 'x+');
			@fclose($f);
		}
	}

	/** returns void**/
	private function _appendToLogfile($body,$file) {
		$fh = @fopen($file, 'a');
		@fwrite($fh,$body . PHP_EOL);
		@fclose($fh);
	}

	/** returns void **/
	public function insert_log($type,$user,$body,$stacktrace = null) {

		if(!isset($user) || $user == null) {
			$user = "NULL";
			$body = "No user specified. ".$body;
		}
		if(!isset($type) || $type == null) {
			$type = "Error";
			$body = "No error type specified. ".$body;
		}

		if(!isset($body) || $body == null) {
			$body = "";
		}

		$timestamp = date(DATE_ISO8601, time());

		if(isset($stacktrace) || $stacktrace != null) {
			$body = $stacktrace;
		}

		$log = sprintf(
			"Timestamp: %s | User: %s | Message: %s",
			$timestamp, $user, $body
		);

		$file = $this->_log_files[$type];

		$this->_appendToLogfile($log,$file);

	}

}

?>