feat: add language to callback service

Author: barahouei

handlers/bot/callbacks.go

@@ -48,6 +48,8 @@ func (h *handler) Callback(ctx context.Context, tgbot *tgbotapi.BotAPI, update t
 		msg = h.callback.Information(ctx, msg, user)
 	case "help":
 		msg = h.callback.Help(ctx, msg, user)
+	case "language":
+		msg = h.callback.Language(ctx, msg, user)
 	case "backToMain":
 		msg = h.callback.Menu(ctx, msg, user)
 	}

pkg/keyboards/main.go

@@ -23,6 +23,9 @@ var mainEN = tgbotapi.NewInlineKeyboardMarkup(
 		tgbotapi.NewInlineKeyboardButtonData("Your Information", "information"),
 		tgbotapi.NewInlineKeyboardButtonData("Help", "help"),
 	),
+	tgbotapi.NewInlineKeyboardRow(
+		tgbotapi.NewInlineKeyboardButtonData("Choosing another language", "language"),
+	),
 )
 
 // mainFa is main menu in Persian.
@@ -31,4 +34,7 @@ var mainFa = tgbotapi.NewInlineKeyboardMarkup(
 		tgbotapi.NewInlineKeyboardButtonData("اطلاعات شما", "information"),
 		tgbotapi.NewInlineKeyboardButtonData("کمک", "help"),
 	),
+	tgbotapi.NewInlineKeyboardRow(
+		tgbotapi.NewInlineKeyboardButtonData("انتخاب زبان دیگر", "language"),
+	),
 )

services/callback.go

@@ -13,4 +13,5 @@ type Callback interface {
 	Menu(ctx context.Context, msg tgbotapi.MessageConfig, user *models.User) tgbotapi.MessageConfig
 	Help(ctx context.Context, msg tgbotapi.MessageConfig, user *models.User) tgbotapi.MessageConfig
 	Information(ctx context.Context, msg tgbotapi.MessageConfig, user *models.User) tgbotapi.MessageConfig
+	Language(ctx context.Context, msg tgbotapi.MessageConfig, user *models.User) tgbotapi.MessageConfig
 }

services/callback/language.go

@@ -0,0 +1,19 @@
+// package callback implements callback request functionalities.
+package callback
+
+import (
+	"context"
+
+	"github.com/barahouei/clean-architecture-telegram-bot/models"
+	"github.com/barahouei/clean-architecture-telegram-bot/pkg/keyboards"
+	"github.com/barahouei/clean-architecture-telegram-bot/pkg/messages"
+	tgbotapi "github.com/go-telegram-bot-api/telegram-bot-api/v5"
+)
+
+// Language shows a select language menu.
+func (m *call) Language(ctx context.Context, msg tgbotapi.MessageConfig, user *models.User) tgbotapi.MessageConfig {
+	msg.Text = messages.Language(user)
+	msg.ReplyMarkup = keyboards.Language()
+
+	return msg
+}