better autocomplete

main.go

@@ -9,7 +9,6 @@ import (
 	"os"
 	"os/signal"
 	"strconv"
-	"strings"
 	"time"
 
 	"git.sunturtle.xyz/zephyr/horse/horse"
@@ -110,6 +109,13 @@ func main() {
 		stop()
 	}
 	slog.Info("ready")
+	go func() {
+		// Preload autocomplete in a separate goroutine.
+		slog.Info("begin computing skill autocomplete")
+		set := skillGlobalAuto()
+		buckets, longest := set.Metrics()
+		slog.Info("done computing skill autocomplete", slog.Int("buckets", buckets), slog.Int("longest", longest))
+	}()
 	<-ctx.Done()
 	stop()
 
@@ -162,15 +168,11 @@ func skillHandler(data discord.SlashCommandInteractionData, e *handler.CommandEv
 }
 
 func skillAutocomplete(e *handler.AutocompleteEvent) error {
-	q := strings.ToLower(e.Data.String("query"))
-	r := make([]discord.AutocompleteChoice, 0, 25)
-	for k, _ := range global.SkillNameToID {
-		if strings.HasPrefix(strings.ToLower(k), q) {
-			r = append(r, discord.AutocompleteChoiceString{Name: k, Value: k})
-			if len(r) == cap(r) {
-				break
-			}
-		}
+	q := e.Data.String("query")
+	opts := skillGlobalAuto().Find(nil, q)
+	r := make([]discord.AutocompleteChoice, min(len(opts), 25))
+	for i, k := range opts[:min(len(opts), len(r))] {
+		r[i] = discord.AutocompleteChoiceString{Name: k, Value: k}
 	}
 	return e.AutocompleteResult(r)
 }