feat(slackbot): support nested commands

slackbot/doc_test.go

@@ -20,8 +20,7 @@ func Example_simple() {
 }
 
 func Example_nested() {
-	b := slackbot.New("my-slack-token")
-	b.Add(slackbot.Commands{
+	b := slackbot.New("my-slack-token", slackbot.WithCommands(slackbot.Commands{
 		"hello": slackbot.HandlerFunc(func(ctx context.Context, s ...string) []slack.Attachment {
 			return []slack.Attachment{{Color: "good", Text: "General Kenobi!"}}
 		}),
@@ -33,7 +32,7 @@ func Example_nested() {
 				return []slack.Attachment{{Text: "bar"}}
 			}),
 		},
-	})
+	}))
 
 	fmt.Println("Commands: " + strings.Join(b.GetCommands(), ", "))
 	// Output: Commands: hello, help, say, version

slackbot/options.go

@@ -18,7 +18,7 @@ func WithName(name string) Option {
 // and Command.AddCommandGroup() after creating the SlackBot with New().
 func WithCommands(commands Commands) Option {
 	return func(b *SlackBot) {
-		b.Commands.Add(commands)
+		b.commands.Add(commands)
 	}
 }
 

slackbot/options_test.go

@@ -28,12 +28,12 @@ func TestWithLogger(t *testing.T) {
 
 func TestWithCommands(t *testing.T) {
 	b := New("123")
-	assert.Equal(t, []string{"help", "version"}, b.GetCommands())
+	assert.Equal(t, []string{"help", "version"}, b.commands.GetCommands())
 
 	b = New("123", WithCommands(Commands{
 		"test": HandlerFunc(func(_ context.Context, args ...string) []slack.Attachment {
 			return nil
 		}),
 	}))
-	assert.Equal(t, []string{"help", "test", "version"}, b.GetCommands())
+	assert.Equal(t, []string{"help", "test", "version"}, b.commands.GetCommands())
 }

slackbot/slackbot.go

@@ -13,10 +13,10 @@ import (
 
 // SlackBot connects to Slack through Slack's Bot integration.
 type SlackBot struct {
-	Commands
-	client SlackClient
-	name   string
-	logger *slog.Logger
+	client   SlackClient
+	commands Commands
+	name     string
+	logger   *slog.Logger
 }
 
 type SlackClient interface {
@@ -33,7 +33,7 @@ func New(slackToken string, options ...Option) *SlackBot {
 		name:   "slackbot",
 		logger: slog.Default(),
 	}
-	b.Commands = Commands{
+	b.commands = Commands{
 		"help":    HandlerFunc(b.doHelp),
 		"version": HandlerFunc(b.doVersion),
 	}
@@ -104,7 +104,7 @@ func (b *SlackBot) processMessage(ctx context.Context, message *slack.MessageEve
 	}
 
 	b.logger.Debug("running command", "args", args)
-	output := b.Handle(ctx, args...)
+	output := b.commands.Handle(ctx, args...)
 
 	return b.Send(message.Channel, output)
 }
@@ -150,3 +150,8 @@ func (b *SlackBot) doHelp(_ context.Context, _ ...string) []slack.Attachment {
 func (b *SlackBot) doVersion(_ context.Context, _ ...string) []slack.Attachment {
 	return []slack.Attachment{{Color: "good", Text: b.name}}
 }
+
+// GetCommands returns a sorted list of all supported commands.
+func (b *SlackBot) GetCommands() []string {
+	return b.commands.GetCommands()
+}