feat: add lyrics not found placeholder

config/config.go

@@ -34,10 +34,11 @@ func init() {
 }
 
 type Config struct {
-	Player         string `default:"spotify" yaml:"player"`
-	IgnoreErrors   bool   `default:"true" yaml:"ignoreErrors"`
-	TimerInterval  int    `default:"200" yaml:"timerInterval"`
-	UpdateInterval int    `default:"2000" yaml:"updateInterval"`
+	Player             string `default:"spotify" yaml:"player"`
+	IgnoreErrors       bool   `default:"true" yaml:"ignoreErrors"`
+	ShowLyricsNotFound bool   `default:"true" yaml:"showLyricsNotFound"`
+	TimerInterval      int    `default:"200" yaml:"timerInterval"`
+	UpdateInterval     int    `default:"2000" yaml:"updateInterval"`
 
 	Style struct {
 		HAlignment string `default:"center" yaml:"hAlignment"`

lyrics/lyrics.go

@@ -5,6 +5,8 @@ import (
 	"strings"
 )
 
+const NoLyricsPlaceholder = "Hmm. We don't know the lyrics for this one."
+
 type Provider interface {
 	Lyrics(artist, track string) ([]Line, error)
 }

ui/ui.go

@@ -79,15 +79,15 @@ func (m *Model) Update(message tea.Msg) (tea.Model, tea.Cmd) {
 			}
 
 		case "up":
-			if m.state.Playing && lyrics.Timesynced(m.state.Lines) {
+			if len(m.state.Lines) == 0 || (m.state.Playing && lyrics.Timesynced(m.state.Lines)) {
 				break
 			}
 			m.state.Index -= 1
 			if m.state.Index < 0 {
 				m.state.Index = 0
 			}
 		case "down":
-			if m.state.Playing && lyrics.Timesynced(m.state.Lines) {
+			if len(m.state.Lines) == 0 || (m.state.Playing && lyrics.Timesynced(m.state.Lines)) {
 				break
 			}
 			m.state.Index += 1
@@ -113,6 +113,15 @@ func (m *Model) View() string {
 		)
 	}
 	if len(m.state.Lines) == 0 {
+		if m.Config.ShowLyricsNotFound {
+			return gloss.PlaceVertical(
+				m.h, gloss.Center,
+				m.styleCurrent.
+					Align(gloss.Center).
+					Width(m.w).
+					Render(lyrics.NoLyricsPlaceholder),
+			)
+		}
 		return ""
 	}