add http api

main.go

@@ -4,6 +4,7 @@ import (
 	"bytes"
 	"context"
 	"flag"
+	"fmt"
 	"log/slog"
 	"os"
 	"os/signal"
@@ -18,20 +19,41 @@ import (
 	"github.com/disgoorg/disgo/discord"
 	"github.com/disgoorg/disgo/handler"
 	"github.com/disgoorg/disgo/handler/middleware"
+	"github.com/disgoorg/disgo/httpserver"
 	"github.com/disgoorg/disgo/rest"
 )
 
 func main() {
 	var (
-		appID     string
-		pubkey    string
 		tokenFile string
+		// http api options
+		addr   string
+		route  string
+		pubkey string
+		// logging options
+		level   slog.Level
+		textfmt string
 	)
-	flag.StringVar(&appID, "id", "", "Discord application ID")
-	flag.StringVar(&pubkey, "key", "", "Discord public key")
 	flag.StringVar(&tokenFile, "token", "", "`file` containing the Discord bot token")
+	flag.StringVar(&addr, "http", "", "`address` to bind HTTP API server")
+	flag.StringVar(&route, "route", "/interactions/callback", "`path` to serve HTTP API calls")
+	flag.StringVar(&pubkey, "key", "", "Discord public key")
+	flag.TextVar(&level, "log", slog.LevelInfo, "slog logging `level`")
+	flag.StringVar(&textfmt, "log-format", "text", "slog logging `format`, text or json")
 	flag.Parse()
 
+	var lh slog.Handler
+	switch textfmt {
+	case "text":
+		lh = slog.NewTextHandler(os.Stderr, &slog.HandlerOptions{Level: level})
+	case "json":
+		lh = slog.NewJSONHandler(os.Stderr, &slog.HandlerOptions{Level: level})
+	default:
+		fmt.Fprintf(os.Stderr, "invalid log format %q, must be text or json", textfmt)
+		os.Exit(1)
+	}
+	slog.SetDefault(slog.New(lh))
+
 	token, err := os.ReadFile(tokenFile)
 	if err != nil {
 		slog.Error("reading token", slog.Any("err", err))
@@ -51,8 +73,25 @@ func main() {
 		r.ButtonComponent("/{id}", skillButton)
 	})
 
-	slog.Info("connect", slog.String("disgo", disgo.Version))
-	client, err := disgo.New(string(token), bot.WithDefaultGateway(), bot.WithEventListeners(r))
+	opts := []bot.ConfigOpt{bot.WithDefaultGateway(), bot.WithEventListeners(r)}
+	if addr != "" {
+		if pubkey == "" {
+			slog.Error("Discord public key must be provided when using HTTP API")
+			os.Exit(1)
+		}
+		opts = append(opts, bot.WithHTTPServerConfigOpts(pubkey,
+			httpserver.WithAddress(addr),
+			httpserver.WithURL(route),
+		))
+	}
+
+	slog.Info("connect",
+		slog.String("disgo", disgo.Version),
+		slog.Bool("http", addr != ""),
+		slog.String("address", addr),
+		slog.String("route", route),
+	)
+	client, err := disgo.New(string(token), opts...)
 	if err != nil {
 		slog.Error("building bot", slog.Any("err", err))
 		os.Exit(1)