add list selectable modules

main.go

@@ -30,6 +30,10 @@ func main() {
 						Value:   "text",
 						Aliases: []string{"o"},
 					},
+					&cli.BoolFlag{
+						Name:  "all",
+						Usage: "show full Waybar module names",
+					},
 				},
 			},
 			{
@@ -87,7 +91,11 @@ func listModulesCommand(ctx context.Context, cmd *cli.Command) error {
 		return err
 	}
 
-	names := registry.Names()
+	names := registry.SelectableNames()
+	if cmd.Bool("all") {
+		names = registry.Names()
+	}
+
 	switch cmd.String("format") {
 	case "json":
 		data, err := json.MarshalIndent(names, "", "  ")

registry.go

@@ -113,6 +113,19 @@ func (r Registry) Names() []string {
 	return names
 }
 
+func (r Registry) SelectableNames() []string {
+	names := make(map[string]struct{}, len(r.Modules))
+	wm := currentWM()
+	for name := range r.Modules {
+		selectableName := selectableModuleName(name, wm)
+		if selectableName != "" {
+			names[selectableName] = struct{}{}
+		}
+	}
+
+	return sortedKeys(names)
+}
+
 func (r Registry) Resolve(name, position string) (string, error) {
 	explicit := strings.Contains(name, "/") || strings.Contains(name, "#")
 	if explicit {
@@ -154,6 +167,44 @@ func (r Registry) Resolve(name, position string) (string, error) {
 	return "", fmt.Errorf("module %q not found", name)
 }
 
+func selectableModuleName(name, wm string) string {
+	namespace, base, hasNamespace := strings.Cut(name, "/")
+	if !hasNamespace {
+		return trimVerticalVariant(name)
+	}
+
+	if isKnownWM(namespace) {
+		if wm != "" && namespace != wm {
+			return ""
+		}
+		return trimVerticalVariant(base)
+	}
+
+	return trimVerticalVariant(name)
+}
+
+func trimVerticalVariant(name string) string {
+	return strings.TrimSuffix(name, "#vertical")
+}
+
+func isKnownWM(name string) bool {
+	switch name {
+	case "hyprland", "niri":
+		return true
+	default:
+		return false
+	}
+}
+
+func sortedKeys(values map[string]struct{}) []string {
+	keys := make([]string, 0, len(values))
+	for key := range values {
+		keys = append(keys, key)
+	}
+	sort.Strings(keys)
+	return keys
+}
+
 func (r Registry) suffixMatches(name string) []string {
 	suffix := "/" + name
 	var matches []string