use device name instead of ID

internal/morningalarm.go

@@ -15,7 +15,7 @@ type alarm struct {
 type MorningAlarmConfig struct {
 	SpotifyClientID     string `json:"spotifyClientId"`
 	SpotifyClientSecret string `json:"spotifyClientSecret"`
-	DeviceID            string `json:"deviceId"`
+	DeviceName          string `json:"deviceName"`
 	PlaylistID          string `json:"wakeupContext"`
 	RedirectURL         string `json:"redirectUrl"`
 	ListenAddr          string `json:"listenAddr"`

internal/spotify.go

@@ -114,7 +114,14 @@ func (ma *MorningAlarm) setupSpotify() error {
 // Can still return an error even if the playback was started successfully.
 func (ma *MorningAlarm) playWakeUpMusic() (bool, error) {
 	playContextURI := spotify.URI("spotify:playlist:" + ma.config.PlaylistID)
-	deviceID := spotify.ID(ma.config.DeviceID)
+
+	devID, err := ma.getDeviceIDFromName(ma.config.DeviceName)
+
+	if err != nil {
+		return false, err
+	}
+
+	deviceID := spotify.ID(devID)
 
 	playlist, err := ma.sp.GetPlaylistItems(context.Background(), spotify.ID(ma.config.PlaylistID))
 
@@ -160,3 +167,19 @@ func (ma *MorningAlarm) getAvailableDevices() ([]Device, error) {
 
 	return availableDevices, nil
 }
+
+func (ma *MorningAlarm) getDeviceIDFromName(name string) (string, error) {
+	dev, err := ma.getAvailableDevices()
+
+	if err != nil {
+		return "", err
+	}
+
+	for _, device := range dev {
+		if device.Name == name {
+			return device.ID, nil
+		}
+	}
+
+	return "", fmt.Errorf("device with name %s not found", name)
+}

internal/webserver.go

@@ -106,7 +106,7 @@ func (ma *MorningAlarm) setupWebserver() {
 			"timezoneOffsetInH": offset / 60 / 60,
 			"alarms":            len(ma.cr.Entries()),
 			"wakeupPlaylist":    ma.config.PlaylistID,
-			"deviceId":          ma.config.DeviceID,
+			"deviceName":        ma.config.DeviceName,
 		}
 
 		if nextIn != nil {