interact: add command description

examples/interact/main.go

@@ -41,7 +41,7 @@ type PositionInteraction struct {
 }
 
 func (m *PositionInteraction) Commands(i *interact.Interact) {
-	i.Command("/closePosition", func(reply interact.Reply) error {
+	i.Command("/closePosition", "", func(reply interact.Reply) error {
 		// send symbol options
 		reply.Message("Choose your position")
 		for _, symbol := range []string{"BTCUSDT", "ETHUSDT"} {

pkg/interact/auth.go

@@ -51,7 +51,7 @@ func (it *AuthInteract) Commands(interact *Interact) {
 
 			it.OneTimePasswordKey = key
 		}
-		interact.Command("/auth", func(reply Reply, authorizer Authorizer) error {
+		interact.Command("/auth", "authorize", func(reply Reply, authorizer Authorizer) error {
 			reply.Message("Enter your authentication token")
 			authorizer.StartAuthorizing()
 			return nil
@@ -82,7 +82,7 @@ func (it *AuthInteract) Commands(interact *Interact) {
 			return ErrAuthenticationFailed
 		})
 	} else {
-		interact.Command("/auth", func(reply Reply) error {
+		interact.Command("/auth", "authorize", func(reply Reply) error {
 			reply.Message("Enter your authentication code")
 			return nil
 		}).NamedNext(StateAuthenticated, func(code string, reply Reply, authorizer Authorizer) error {

pkg/interact/command.go

@@ -8,6 +8,9 @@ type Command struct {
 	// Name is the command name
 	Name string
 
+	// Desc is the command description
+	Desc string
+
 	// StateF is the command handler function
 	F interface{}
 
@@ -17,9 +20,10 @@ type Command struct {
 	initState, lastState State
 }
 
-func NewCommand(name string, f interface{}) *Command {
+func NewCommand(name, desc string, f interface{}) *Command {
 	c := &Command{
 		Name:       name,
+		Desc:       desc,
 		F:          f,
 		states:     make(map[State]State),
 		statesFunc: make(map[State]interface{}),

pkg/interact/interact.go

@@ -37,7 +37,7 @@ type TextMessageResponder interface {
 }
 
 type CommandResponder interface {
-	AddCommand(command string, responder Responder)
+	AddCommand(command *Command, responder Responder)
 }
 
 type Messenger interface {
@@ -84,13 +84,13 @@ func (it *Interact) AddCustomInteraction(custom CustomInteraction) {
 }
 
 func (it *Interact) PrivateCommand(command string, f interface{}) *Command {
-	cmd := NewCommand(command, f)
+	cmd := NewCommand(command, "", f)
 	it.privateCommands[command] = cmd
 	return cmd
 }
 
-func (it *Interact) Command(command string, f interface{}) *Command {
-	cmd := NewCommand(command, f)
+func (it *Interact) Command(command string, desc string, f interface{}) *Command {
+	cmd := NewCommand(command, desc, f)
 	it.commands[command] = cmd
 	return cmd
 }
@@ -200,7 +200,7 @@ func (it *Interact) SetMessenger(messenger Messenger) {
 
 // builtin initializes the built-in commands
 func (it *Interact) builtin() error {
-	it.Command("/uptime", func(reply Reply) error {
+	it.Command("/uptime", "show bot uptime", func(reply Reply) error {
 		uptime := time.Since(it.startTime)
 		reply.Message(fmt.Sprintf("uptime %s", uptime))
 		return nil
@@ -232,7 +232,7 @@ func (it *Interact) init() error {
 		}
 
 		commandName := n
-		it.messenger.AddCommand(commandName, func(message string, reply Reply, ctxObjects ...interface{}) error {
+		it.messenger.AddCommand(cmd, func(message string, reply Reply, ctxObjects ...interface{}) error {
 			args := parseCommand(message)
 			return it.runCommand(commandName, args, append(ctxObjects, reply)...)
 		})

pkg/interact/interact_test.go

@@ -68,7 +68,7 @@ type TestInteraction struct {
 }
 
 func (m *TestInteraction) Commands(interact *Interact) {
-	interact.Command("/closePosition", func(reply Reply) error {
+	interact.Command("/closePosition", "", func(reply Reply) error {
 		// send symbol options
 		return nil
 	}).Next(func(symbol string) error {

pkg/interact/telegram.go

@@ -3,6 +3,7 @@ package interact
 import (
 	"context"
 	"fmt"
+	"strings"
 
 	log "github.com/sirupsen/logrus"
 	"gopkg.in/tucnak/telebot.v2"
@@ -78,6 +79,8 @@ type Telegram struct {
 
 	// textMessageResponder is used for interact to register its message handler
 	textMessageResponder Responder
+
+	commands []*Command
 }
 
 func (tm *Telegram) newAuthorizer(message *telebot.Message) *TelegramAuthorizer {
@@ -121,11 +124,28 @@ func (tm *Telegram) Start(context.Context) {
 			}
 		}
 	})
+
+	var cmdList []telebot.Command
+	for _, cmd := range tm.commands {
+		if len(cmd.Desc) == 0 {
+			continue
+		}
+
+		cmdList = append(cmdList, telebot.Command{
+			Text:        strings.ToLower(strings.TrimLeft(cmd.Name, "/")),
+			Description: cmd.Desc,
+		})
+	}
+	if err := tm.Bot.SetCommands(cmdList); err != nil {
+		log.WithError(err).Errorf("[telegram] set commands error")
+	}
+
 	go tm.Bot.Start()
 }
 
-func (tm *Telegram) AddCommand(command string, responder Responder) {
-	tm.Bot.Handle(command, func(m *telebot.Message) {
+func (tm *Telegram) AddCommand(cmd *Command, responder Responder) {
+	tm.commands = append(tm.commands, cmd)
+	tm.Bot.Handle(cmd.Name, func(m *telebot.Message) {
 		authorizer := tm.newAuthorizer(m)
 		reply := tm.newReply()
 		if err := responder(m.Payload, reply, authorizer); err != nil {