cmdroute: Fix Autocompleter handling (#423)

* handle group with cmdroute/autocompleter

* handle autocompleter: find all options

api/cmdroute/router.go

@@ -316,18 +316,42 @@ type autocompleterData struct {
 	data    discord.AutocompleteOption
 }
 
+// findAutocompleter finds the autocomplete handler for the given option name.
+// It checks the current router and its groups.
 func (r *Router) findAutocompleter(ev *discord.InteractionEvent, data discord.AutocompleteOption) (autocompleterData, bool) {
+	found, ok := r.findAutocompleterOnce(ev, data)
+	if ok {
+		return found, true
+	}
+
+	for _, sub := range r.groups {
+		found, ok = sub.findAutocompleterOnce(ev, data)
+		if ok {
+			return found, true
+		}
+	}
+
+	return autocompleterData{}, false
+}
+
+// findAutocompleter finds the autocomplete handler for the given option name.
+// It only checks the current router and not its groups.
+func (r *Router) findAutocompleterOnce(ev *discord.InteractionEvent, data discord.AutocompleteOption) (autocompleterData, bool) {
 	node, ok := r.nodes[data.Name]
 	if !ok {
 		return autocompleterData{}, false
 	}
-
 	switch node := node.(type) {
 	case routeNodeSub:
 		if len(data.Options) != 1 || data.Type != discord.SubcommandGroupOptionType {
 			break
 		}
-		return node.findAutocompleter(ev, data.Options[0])
+		for _, option := range data.Options {
+			found, ok := node.findAutocompleter(ev, option)
+			if ok {
+				return found, true
+			}
+		}
 	case routeNodeCommand:
 		if node.autocomplete == nil {
 			break
@@ -341,7 +365,6 @@ func (r *Router) findAutocompleter(ev *discord.InteractionEvent, data discord.Au
 			data:    data,
 		}, true
 	}
-
 	return autocompleterData{}, false
 }