Closes #249: add Rescan Library to settings menu

backend/mediaprovider/mediaprovider.go

@@ -90,4 +90,6 @@ type MediaProvider interface {
 	Scrobble(trackID string, submission bool) error
 
 	DownloadTrack(trackID string) (io.Reader, error)
+
+	RescanLibrary() error
 }

backend/mediaprovider/subsonic/subsonicmediaprovider.go

@@ -267,6 +267,11 @@ func (s *subsonicMediaProvider) DownloadTrack(trackID string) (io.Reader, error)
 	return s.client.Download(trackID)
 }
 
+func (s *subsonicMediaProvider) RescanLibrary() error {
+	_, err := s.client.StartScan()
+	return err
+}
+
 func toTrack(ch *subsonic.Child) *mediaprovider.Track {
 	if ch == nil {
 		return nil

ui/browsing/browsingpane.go

@@ -120,6 +120,11 @@ func (b *BrowsingPane) AddSettingsMenuItem(label string, action func()) {
 		fyne.NewMenuItem(label, action))
 }
 
+func (b *BrowsingPane) AddSettingsMenuSeparator() {
+	b.settingsMenu.Items = append(b.settingsMenu.Items,
+		fyne.NewMenuItemSeparator())
+}
+
 func (b *BrowsingPane) AddNavigationButton(icon fyne.Resource, action func()) {
 	b.navBtnsContainer.Add(widget.NewButtonWithIcon("", icon, action))
 }

ui/mainwindow.go

@@ -115,6 +115,8 @@ func NewMainWindow(fyneApp fyne.App, appName, displayAppName, appVersion string,
 	})
 	m.BrowsingPane.AddSettingsMenuItem("Log Out", func() { app.ServerManager.Logout(true) })
 	m.BrowsingPane.AddSettingsMenuItem("Switch Servers", func() { app.ServerManager.Logout(false) })
+	m.BrowsingPane.AddSettingsMenuItem("Rescan Library", func() { app.ServerManager.Server.RescanLibrary() })
+	m.BrowsingPane.AddSettingsMenuSeparator()
 	m.BrowsingPane.AddSettingsMenuItem("Check for Updates", func() {
 		go func() {
 			if t := app.UpdateChecker.CheckLatestVersionTag(); t != "" && t != app.VersionTag() {