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// Copyright (c) Tailscale Inc & contributors
// SPDX-License-Identifier: BSD-3-Clause
package desktop
import (
"fmt"
"tailscale.com/ipn/ipnauth"
)
// SessionID is a unique identifier of a desktop session.
type SessionID uint
// SessionStatus is the status of a desktop session.
type SessionStatus int
const (
// ClosedSession is a session that does not exist, is not yet initialized by the OS,
// or has been terminated.
ClosedSession SessionStatus = iota
// ForegroundSession is a session that a user can interact with,
// such as when attached to a physical console or an active,
// unlocked RDP connection.
ForegroundSession
// BackgroundSession indicates that the session is locked, disconnected,
// or otherwise running without user presence or interaction.
BackgroundSession
)
// String implements [fmt.Stringer].
func (s SessionStatus) String() string {
switch s {
case ClosedSession:
return "Closed"
case ForegroundSession:
return "Foreground"
case BackgroundSession:
return "Background"
default:
panic("unreachable")
}
}
// Session is a state of a desktop session at a given point in time.
type Session struct {
ID SessionID // Identifier of the session; can be reused after the session is closed.
Status SessionStatus // The status of the session, such as foreground or background.
User ipnauth.Actor // User logged into the session.
}
// Description returns a human-readable description of the session.
func (s *Session) Description() string {
if maybeUsername, _ := s.User.Username(); maybeUsername != "" { // best effort
return fmt.Sprintf("Session %d - %q (%s)", s.ID, maybeUsername, s.Status)
}
return fmt.Sprintf("Session %d (%s)", s.ID, s.Status)
}
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