Makes the spinner configurable.

README.md

@@ -68,6 +68,9 @@ scrobble = true  # Use Subsonic scrobbling for last.fm/ListenBrainz (default: fa
 
 [client]
 random-songs = 50
+
+[ui]
+spinner = '▁▂▃▄▅▆▇█▇▆▅▄▃▂▁'
 ```
 
 ## Usage
@@ -116,6 +119,20 @@ These controls are accessible from any view:
 - `d`: Delete playlist
 - `a`: Add playlist or song to queue
 
+On servers with a large number of songs in the playlists, Subsonic can take a while to respond to a request for a list. stmps therefore loads playlists in the background, and will display a spinner next to the "playlist" tab label at the bottom. This spinner can be configured with the `ui.spinner` option in the config file. Some ideas are:
+
+```toml
+spinner = '▁▂▃▄▅▆▇█▇▆▅▄▃▁'
+spinner = '⠁⠂⠄⡀⢀⠠⠐⠈'
+spinner = '|/-\'
+spinner = '▖▘'
+spinner = '▖▌▘'
+spinner = '┤┘┴└├┌┬┐'
+spinner = '⣾⣽⣻⢿⡿⣟⣯⣷'
+```
+
+The default is `▉▊▋▌▍▎▏▎▍▌▋▊▉`. Set only one of these at a time, and the glyphs must exist in the font that the terminal running stmps is using.
+
 ## Advanced Configuration and Features
 
 ### MPRIS2 Integration

page_playlist.go

@@ -12,6 +12,7 @@ import (
 	"github.com/rivo/tview"
 	"github.com/spezifisch/stmps/logger"
 	"github.com/spezifisch/stmps/subsonic"
+	"github.com/spf13/viper"
 )
 
 type PlaylistPage struct {
@@ -197,7 +198,11 @@ func (p *PlaylistPage) UpdatePlaylists() {
 	}
 	p.isUpdating = true
 
-	var spinnerText []rune = []rune("⠁⠂⠄⡀⢀⠠⠐⠈")
+	var spinnerText []rune = []rune(viper.GetString("ui.spinner"))
+	if len(spinnerText) == 0 {
+		spinnerText = []rune("▉▊▋▌▍▎▏▎▍▌▋▊▉")
+	}
+	spinnerMax := len(spinnerText) - 1
 	playlistsButton := buttonOrder[2]
 	stop := make(chan bool)
 	go func() {
@@ -217,7 +222,7 @@ func (p *PlaylistPage) UpdatePlaylists() {
 					label := fmt.Sprintf(format, 3, spinnerText[idx], playlistsButton)
 					p.ui.menuWidget.buttons[playlistsButton].SetLabel(label)
 					idx++
-					if idx > 7 {
+					if idx > spinnerMax {
 						idx = 0
 					}
 				})