feat(linux): add screen lock sensor

internal/linux/api.go

@@ -40,6 +40,7 @@ func (d *LinuxDeviceAPI) SensorWorkers() []func(context.Context, chan interface{
  workers = append(workers, LoadAvgUpdater)
  workers = append(workers, DiskUsageUpdater)
  workers = append(workers, TimeUpdater)
+ workers = append(workers, ScreenLockUpdater)
  return workers
 }
 

internal/linux/screenlock.go

@@ -0,0 +1,92 @@
+// Copyright (c) 2023 Joshua Rich <[email protected]>
+//
+// This software is released under the MIT License.
+// https://opensource.org/licenses/MIT
+
+package linux
+
+import (
+ "context"
+
+ "github.com/godbus/dbus/v5"
+ "github.com/joshuar/go-hass-agent/internal/device"
+ "github.com/joshuar/go-hass-agent/internal/hass"
+ "github.com/rs/zerolog/log"
+)
+
+const (
+ screensaverDBusPath = "/org/freedesktop/ScreenSaver"
+ screensaverDBusInterface = "org.freedesktop.ScreenSaver"
+)
+
+type screenlock struct {
+ locked bool
+}
+
+func (l *screenlock) Name() string {
+ return "Screen Lock"
+}
+
+func (l *screenlock) ID() string {
+ return "screen_lock"
+}
+
+func (l *screenlock) Icon() string {
+ if l.locked {
+ return "mdi:eye-lock"
+ } else {
+ return "mdi:eye-lock-open"
+ }
+}
+
+func (l *screenlock) SensorType() hass.SensorType {
+ return hass.TypeBinary
+}
+
+func (l *screenlock) DeviceClass() hass.SensorDeviceClass {
+ return 0
+}
+
+func (l *screenlock) StateClass() hass.SensorStateClass {
+ return 0
+}
+
+func (l *screenlock) State() interface{} {
+ return l.locked
+}
+
+func (l *screenlock) Units() string {
+ return ""
+}
+
+func (l *screenlock) Category() string {
+ return ""
+}
+
+func (l *screenlock) Attributes() interface{} {
+ return nil
+}
+
+func ScreenLockUpdater(ctx context.Context, update chan interface{}) {
+ deviceAPI, err := device.FetchAPIFromContext(ctx)
+ if err != nil {
+ log.Debug().Err(err).Caller().
+ Msg("Could not connect to DBus.")
+ return
+ }
+ dbusAPI := device.GetAPIEndpoint[*bus](deviceAPI, "session")
+
+ NewBusRequest(dbusAPI).
+ Path(screensaverDBusPath).
+ Match([]dbus.MatchOption{
+ dbus.WithMatchObjectPath(screensaverDBusPath),
+ dbus.WithMatchInterface(screensaverDBusInterface),
+ }).
+ Event("org.freedesktop.ScreenSaver.ActiveChanged").
+ Handler(func(s *dbus.Signal) {
+ lock := new(screenlock)
+ lock.locked = s.Body[0].(bool)
+ update <- lock
+ }).
+ AddWatch(ctx)
+}