<?php
	session_start();

	function get_version()
	{
		return "1.4.2023.10b1 rev 280100";
	}
	function generateRandomString($length = 10) {
		$characters = '0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ';
		$charactersLength = strlen($characters);
		$randomString = '';
		for ($i = 0; $i < $length; $i++) {
			$randomString .= $characters[random_int(0, $charactersLength - 1)];
		}
		return $randomString;
	}

	function getPDO()
	{
		global $pdo;
		if ($pdo == null)
		{
			$pdo = new \PDO("mysql:host=localhost;dbname=bst_test", "bst_test", "hHqS35WY7M9pXh7j");
		}
		return $pdo;
	}

	function sqlexec($query, $parms = null)
	{
		$pdo = getPDO();
		$statement = $pdo->prepare($query);
		$statement->execute($parms);
		$results = $statement->fetchAll();
		return $results;
	}
	function sqlexecl($query, $parms = null)
	{
		$pdo = getPDO();
		$statement = $pdo->prepare($query);
		$statement->execute($parms);
		return $pdo->lastInsertId();
	}
	function sqlexec1($query, $parms = null)
	{
		$pdo = getPDO();
		$statement = $pdo->prepare($query);
		$statement->execute($parms);
		$results = $statement->fetchAll();
		if (count($results) > 0)
		{
			return $results[0];
		}
		return null;
	}
	function sqlexecb($query, $parms = null)
	{
		$pdo = getPDO();
		$statement = $pdo->prepare($query);
		$statement->execute($parms);
		$results = $statement->fetchAll();
		if (count($results) > 0)
		{
			return true;
		}
		return false;
	}

	function get_virtual_path($physical_path)
	{
        $physical_path = str_replace('\\', '/', $physical_path);  
        $document_root_path = str_replace('\\', '/', $_SERVER["DOCUMENT_ROOT"]);
        $path=  str_replace($document_root_path, "", $physical_path);
        $http = isset($_SERVER ['HTTPS']) ? 'https://' : 'http://';
        $host = $_SERVER['HTTP_HOST'];
        return  /* $http . $host . */ $path;
    }
	function get_virtual_path_root($physical_path)
	{
		$path = get_virtual_path($physical_path);
		$path = substr($path, 0, strrpos($path, "/"));
        return  /* $http . $host . */ $path;
    }


	function user_has_permission($user_id, $permission_id)
	{
		return sqlexecb("SELECT * FROM bst_user_permissions WHERE user_id = :user_id AND permission_id = :permission_id", array("user_id" => $user_id, "permission_id" => $permission_id));
	}

	$ses = null;
	$current_user = null;
	$users = sqlexec("SELECT * FROM bst_sessions WHERE session_tag = :session_tag ORDER BY start_datetime LIMIT 1", array("session_tag" => $_SESSION["user_token"]));
	foreach ($users as $user)
	{
		$ses = $user;
		break;
	}

	$user_id = $ses["user_id"];
	$current_user = sqlexec1("SELECT bst_users.* FROM bst_users WHERE bst_users.id = :user_id", array("user_id" => $user_id));
	$tz = null;
	if ($current_user["timezone_id"] != null)
	{
		$tz = sqlexec1("SELECT * FROM bst_timezones WHERE id = :timezone_id", array("timezone_id" => $current_user["timezone_id"]));
	}

	$current_user_id = $current_user["id"];
	$current_user_title = $current_user["title"];
	if ($tz != null)
	{
		date_default_timezone_set($tz["name"]);
	}
?>