feat: initial commit

2026-04-16 19:39:02 +02:00
commit 50d1686b1e
44 changed files with 2089 additions and 0 deletions
--- a/cmd/bot/main.go
+++ b/cmd/bot/main.go
@@ -0,0 +1,125 @@
+package main
+
+import (
+	"context"
+	"log/slog"
+	"os"
+	"os/signal"
+	"regexp"
+	"syscall"
+
+	tgbotapi "github.com/go-telegram-bot-api/telegram-bot-api/v5"
+	"github.com/redis/go-redis/v9"
+
+	"github.com/paramah/gw_telegram/internal/application/usecase"
+	"github.com/paramah/gw_telegram/internal/config"
+	"github.com/paramah/gw_telegram/internal/domain/entity"
+	"github.com/paramah/gw_telegram/internal/infrastructure/n8n"
+	"github.com/paramah/gw_telegram/internal/infrastructure/router"
+	"github.com/paramah/gw_telegram/internal/infrastructure/speech"
+	"github.com/paramah/gw_telegram/internal/infrastructure/storage"
+	infratelegram "github.com/paramah/gw_telegram/internal/infrastructure/telegram"
+	"github.com/paramah/gw_telegram/internal/interfaces"
+)
+
+func main() {
+	cfg := config.MustLoad()
+	logger := newLogger(cfg.Log)
+
+	ctx, cancel := signal.NotifyContext(context.Background(), os.Interrupt, syscall.SIGTERM)
+	defer cancel()
+
+	// Telegram bot
+	bot, err := tgbotapi.NewBotAPI(cfg.Bot.Token)
+	if err != nil {
+		logger.Error("failed to create telegram bot", "error", err)
+		os.Exit(1)
+	}
+	bot.Debug = cfg.Bot.Debug
+	logger.Info("telegram bot authorized", "username", bot.Self.UserName)
+
+	// Redis
+	redisOpts, err := redis.ParseURL(cfg.Redis.URL)
+	if err != nil {
+		logger.Error("invalid redis url", "error", err)
+		os.Exit(1)
+	}
+	redisClient := redis.NewClient(redisOpts)
+
+	// Infrastructure
+	gateway := infratelegram.NewBotGateway(bot, logger)
+	downloader := infratelegram.NewTelegramFileDownloader(bot)
+	sessionStore := storage.NewRedisSessionStore(redisClient, cfg.Redis.TTLHours)
+
+	// n8n workflows (configure via env: N8N_WORKFLOW_<INTENT>=<url>)
+	workflows := map[string]n8n.WorkflowConfig{
+		"default": {
+			ID:         "default",
+			WebhookURL: cfg.N8n.BaseURL + "/webhook/default",
+			AuthToken:  cfg.N8n.AuthToken,
+		},
+	}
+	dispatcher := n8n.NewWebhookDispatcher(workflows, logger)
+
+	// Intent router with default rules
+	rules := []router.Rule{
+		{
+			Pattern:    regexp.MustCompile(`(?i)^/start`),
+			IntentName: "start",
+			Target:     entity.RouteTarget{Type: entity.RouteTargetBuiltin, WorkflowID: "start"},
+			Priority:   100,
+		},
+		{
+			Pattern:    regexp.MustCompile(`(?i)^/help`),
+			IntentName: "help",
+			Target:     entity.RouteTarget{Type: entity.RouteTargetBuiltin, WorkflowID: "help"},
+			Priority:   100,
+		},
+		{
+			Pattern:    regexp.MustCompile(`.*`),
+			IntentName: "general_query",
+			Target:     entity.RouteTarget{Type: entity.RouteTargetN8n, WorkflowID: "default"},
+			Priority:   0,
+		},
+	}
+	intentRouter := router.NewRuleBasedRouter(rules)
+
+	// Speech
+	transcriber := speech.NewOpenAIWhisper(cfg.Speech.OpenAIKey, cfg.Speech.WhisperModel, cfg.Speech.Language)
+	converter := speech.NewFFmpegConverter(cfg.Speech.FFmpegPath, "")
+
+	// Use cases
+	textUC := usecase.NewHandleTextMessage(intentRouter, dispatcher, sessionStore, gateway, logger)
+	voiceUC := usecase.NewHandleVoiceMessage(downloader, converter, transcriber, textUC, gateway, logger)
+
+	// Handler + poller
+	handler := interfaces.NewTelegramHandler(textUC, voiceUC, logger)
+	poller := infratelegram.NewUpdatePoller(bot, handler, logger)
+
+	logger.Info("starting bot", "mode", cfg.Bot.Mode)
+	if err := poller.Start(ctx); err != nil && err != context.Canceled {
+		logger.Error("poller stopped with error", "error", err)
+		os.Exit(1)
+	}
+
+	logger.Info("bot stopped gracefully")
+}
+
+func newLogger(cfg config.LogConfig) *slog.Logger {
+	var level slog.Level
+	switch cfg.Level {
+	case "debug":
+		level = slog.LevelDebug
+	case "warn":
+		level = slog.LevelWarn
+	case "error":
+		level = slog.LevelError
+	default:
+		level = slog.LevelInfo
+	}
+	opts := &slog.HandlerOptions{Level: level}
+	if cfg.Format == "text" {
+		return slog.New(slog.NewTextHandler(os.Stdout, opts))
+	}
+	return slog.New(slog.NewJSONHandler(os.Stdout, opts))
+}