add listener service and message module

cmd/butler/main.go

@@ -0,0 +1,15 @@
+package main
+
+import (
+	"context"
+
+	"git.3crabs.ru/VLADIMIR/butler/internal/modules/messenger/telegram"
+	"git.3crabs.ru/VLADIMIR/butler/internal/services/listener"
+)
+
+func main() {
+	messengerTelegram := telegram.NewMessengerTelegram()
+	listenerService := listener.NewListener(messengerTelegram)
+	ctx := context.Background()
+	listenerService.Run(ctx)
+}

internal/modules/messenger/interface.go

@@ -0,0 +1,14 @@
+package messenger
+
+import "context"
+
+type Message struct {
+	ChatID string
+	UserID string
+	Text   string
+}
+
+type IMessenger interface {
+	GetMessage(ctx context.Context) (*Message, error)
+	SendMessage(ctx context.Context, msg *Message) error
+}

internal/modules/messenger/telegram/telegram.go

@@ -0,0 +1,26 @@
+package telegram
+
+import (
+	"context"
+	"fmt"
+
+	"git.3crabs.ru/VLADIMIR/butler/internal/modules/messenger"
+)
+
+type messengerTelegram struct{}
+
+func NewMessengerTelegram() messenger.IMessenger {
+	return &messengerTelegram{}
+}
+
+func (m *messengerTelegram) GetMessage(ctx context.Context) (*messenger.Message, error) {
+	return &messenger.Message{
+		ChatID: "123",
+		Text:   "hello",
+	}, nil
+}
+
+func (m *messengerTelegram) SendMessage(ctx context.Context, msg *messenger.Message) error {
+	fmt.Println(msg.ChatID, msg.Text)
+	return nil
+}

internal/services/interface.go

@@ -0,0 +1,7 @@
+package services
+
+import "context"
+
+type IService interface {
+	Run(ctx context.Context) (error)
+}

internal/services/listener/listener.go

@@ -0,0 +1,36 @@
+package listener
+
+import (
+	"context"
+	"fmt"
+
+	"git.3crabs.ru/VLADIMIR/butler/internal/modules/messenger"
+	"git.3crabs.ru/VLADIMIR/butler/internal/services"
+)
+
+type listenerService struct {
+	messenger messenger.IMessenger
+}
+
+func NewListener(
+	messenger messenger.IMessenger,
+) services.IService {
+	return &listenerService{
+		messenger: messenger,
+	}
+}
+
+func (s *listenerService) Run(ctx context.Context) error {
+	for {
+		msg, err := s.messenger.GetMessage(ctx)
+		if err != nil {
+			if err == context.Canceled {
+				return nil
+			}
+			return err
+		}
+		if err := s.messenger.SendMessage(ctx, msg); err != nil {
+			fmt.Println(err)
+		}
+	}
+}