Prompt tuned (language)

README.md

@@ -4,7 +4,8 @@ A scalable, multi-bot solution for Telegram using Go, GORM, and the Anthropic AP
 
 ## Design Considerations
 
-- AI-powered
+- AI-powered (Anthropic Claude)
+- Voice message support (ElevenLabs STT + TTS) — optional, enabled per bot via config
 - Supports multiple bot profiles
 - Uses SQLite for persistence
 - Implements rate limiting and user management

anthropic.go

@@ -90,7 +90,7 @@ func (b *Bot) getAnthropicResponse(ctx context.Context, messages []anthropic.Mes
 	for i, msg := range messages {
 		for _, content := range msg.Content {
 			if content.Type == anthropic.MessagesContentTypeText {
-				InfoLogger.Printf("Message %d: Role=%v, Text=%v", i, msg.Role, content.Text)
+				InfoLogger.Printf("Message %d: Role=%v, Text=%v", i, msg.Role, *content.Text)
 			}
 		}
 	}

bot.go

@@ -15,10 +15,10 @@ import (
 )
 
 type Bot struct {
-	tgBot           TelegramClient
+	tgBot             TelegramClient
-	db              *gorm.DB
+	db                *gorm.DB
-	anthropicClient *anthropic.Client
+	anthropicClient   *anthropic.Client
-	chatMemories    map[int64]*ChatMemory
+	chatMemories      map[int64]*ChatMemory
 	memorySize      int
 	chatMemoriesMu  sync.RWMutex
 	config          BotConfig
@@ -84,8 +84,8 @@ func NewBot(db *gorm.DB, config BotConfig, clock Clock, tgClient TelegramClient)
 	anthropicClient := anthropic.NewClient(config.AnthropicAPIKey)
 
 	b := &Bot{
-		db:              db,
+		db:               db,
-		anthropicClient: anthropicClient,
+		anthropicClient:  anthropicClient,
 		chatMemories:    make(map[int64]*ChatMemory),
 		memorySize:      config.MemorySize,
 		config:          config,
@@ -355,7 +355,7 @@ func (b *Bot) registerAdminCommandsForUser(ctx context.Context, telegramID int64
 	allCommands = append(allCommands, adminBotCommands...)
 	_, err := b.tgBot.SetMyCommands(ctx, &bot.SetMyCommandsParams{
 		Commands: allCommands,
-		Scope:    &models.BotCommandScopeChatMember{ChatID: telegramID, UserID: telegramID},
+		Scope:    &models.BotCommandScopeChat{ChatID: telegramID},
 	})
 	if err != nil {
 		ErrorLogger.Printf("Failed to register admin commands for user %d: %v", telegramID, err)
@@ -378,7 +378,7 @@ func setElevatedCommands(tgBot TelegramClient, users []User) {
 		}
 		_, err := tgBot.SetMyCommands(context.Background(), &bot.SetMyCommandsParams{
 			Commands: allCommands,
-			Scope:    &models.BotCommandScopeChatMember{ChatID: u.TelegramID, UserID: u.TelegramID},
+			Scope:    &models.BotCommandScopeChat{ChatID: u.TelegramID},
 		})
 		if err != nil {
 			ErrorLogger.Printf("Warning: could not set admin commands for user %d: %v", u.TelegramID, err)
@@ -470,6 +470,36 @@ func (b *Bot) sendStats(ctx context.Context, chatID int64, userID int64, targetU
 			totalMessages,
 		)
 
+		if b.hasScope(userID, ScopeStatsViewAny) {
+			type topEntry struct {
+				UserID   int64
+				MsgCount int64
+			}
+			var top []topEntry
+			if err := b.db.Model(&Message{}).
+				Select("user_id, COUNT(*) as msg_count").
+				Where("bot_id = ? AND is_user = ? AND deleted_at IS NULL", b.botID, true).
+				Group("user_id").
+				Order("msg_count DESC").
+				Limit(3).
+				Scan(&top).Error; err != nil {
+				ErrorLogger.Printf("Error fetching top users: %v", err)
+			} else if len(top) > 0 {
+				statsMessage += "\n\n🏆 Most Active Users:"
+				for i, entry := range top {
+					var u User
+					if err := b.db.Select("username").Where("telegram_id = ? AND bot_id = ?", entry.UserID, b.botID).First(&u).Error; err != nil {
+						u.Username = fmt.Sprintf("ID:%d", entry.UserID)
+					}
+					name := u.Username
+					if name == "" {
+						name = fmt.Sprintf("ID:%d", entry.UserID)
+					}
+					statsMessage += fmt.Sprintf("\n%d. @%s — %d messages", i+1, name, entry.MsgCount)
+				}
+			}
+		}
+
 		// Send the response through the centralized screen
 		if err := b.sendResponse(ctx, chatID, statsMessage, businessConnectionID); err != nil {
 			ErrorLogger.Printf("Error sending stats message: %v", err)
@@ -645,6 +675,9 @@ func (b *Bot) screenIncomingMessage(message *models.Message) (Message, error) {
 			messageText = "Sent a sticker."
 		}
 	}
+	if message.Voice != nil {
+		messageText = "[Voice message]"
+	}
 
 	userMessage := b.createMessage(message.Chat.ID, message.From.ID, message.From.Username, userRole, messageText, true)
 

config.go

@@ -22,8 +22,11 @@ type BotConfig struct {
 	SystemPrompts   map[string]string `json:"system_prompts"`
 	Active          bool              `json:"active"`
 	OwnerTelegramID int64             `json:"owner_telegram_id"`
-	AnthropicAPIKey string            `json:"anthropic_api_key"`
+	AnthropicAPIKey  string            `json:"anthropic_api_key"`
-	DebugScreening  bool              `json:"debug_screening"` // Enable detailed screening logs
+	ElevenLabsAPIKey  string            `json:"elevenlabs_api_key"`
+	ElevenLabsVoiceID string            `json:"elevenlabs_voice_id"`
+	ElevenLabsModel   string            `json:"elevenlabs_model"`
+	DebugScreening    bool              `json:"debug_screening"` // Enable detailed screening logs
 	ConfigFilePath  string            `json:"-"`               // Set at load time; not serialized
 }
 

config/default.json

@@ -4,16 +4,19 @@
     "telegram_token": "YOUR_TELEGRAM_BOT_TOKEN",
     "owner_telegram_id": 111111111,
     "anthropic_api_key": "YOUR_SPECIFIC_ANTHROPIC_API_KEY",
+    "elevenlabs_api_key": "",
+    "elevenlabs_voice_id": "",
+    "elevenlabs_model": "",
     "memory_size": 10,
     "messages_per_hour": 20,
     "messages_per_day": 100,
     "temp_ban_duration": "24h",
-    "model": "claude-3-5-haiku-latest",
+    "model": "claude-haiku-4-5",
     "temperature": 0.7,
     "debug_screening": false,
     "system_prompts": {
         "default": "You are a helpful assistant.",
-        "custom_instructions": "You are texting through a limited Telegram interface with 15-word maximum. Write like texting a friend - use shorthand, skip grammar, use slang/abbreviations. System cuts off anything longer than 15 words.\n\n- Your name is Atom.\n- The user you're talking to has username '{username}' and display name '{firstname} {lastname}'.\n- User's language preference: '{language}'\n- User is a {premium_status}\n- It's currently {time_context} in your timezone. Use appropriate time-based greetings and address the user by name.\n- If a user asks about buying apples, inform them that we don't sell apples.\n- When asked for a joke, tell a clean, family-friendly joke about programming or technology.\n- If someone inquires about our services, explain that we offer AI-powered chatbot solutions.\n- For any questions about pricing, direct users to contact our sales team at sales@example.com.\n- If asked about your capabilities, be honest about what you can and cannot do.\nAlways maintain a friendly and professional tone.",
+        "custom_instructions": "You are texting through a limited Telegram interface with 15-word maximum. Write like texting a friend - use shorthand, skip grammar, use slang/abbreviations. System cuts off anything longer than 15 words.\n\n- Your name is Atom.\n- The user you're talking to has username '{username}' and display name '{firstname} {lastname}'.\n- User's language preference: '{language}'. Prefer replying in this language when talking to '{username}'.\n- User is a {premium_status}\n- It's currently {time_context} in your timezone. Use appropriate time-based greetings and address the user by name.\n- If a user asks about buying apples, inform them that we don't sell apples.\n- When asked for a joke, tell a clean, family-friendly joke about programming or technology.\n- If someone inquires about our services, explain that we offer AI-powered chatbot solutions.\n- For any questions about pricing, direct users to contact our sales team at sales@example.com.\n- If asked about your capabilities, be honest about what you can and cannot do.\nAlways maintain a friendly and professional tone.",
         "continue_conversation": "Continuing our conversation. Remember previous context if relevant.",
         "avoid_sensitive": "Avoid discussing sensitive topics or providing harmful information.",
         "respond_with_emojis": "Since the user sent only emojis, respond using emojis only."

database.go

@@ -71,7 +71,7 @@ func createDefaultScopes(db *gorm.DB) error {
 		ScopeStatsViewOwn, ScopeStatsViewAny,
 		ScopeHistoryClearOwn, ScopeHistoryClearAny,
 		ScopeHistoryClearHardOwn, ScopeHistoryClearHardAny,
-		ScopeModelSet, ScopeUserPromote,
+		ScopeModelSet, ScopeUserPromote, ScopeTTSUse,
 	}
 	for _, name := range all {
 		if err := db.FirstOrCreate(&Scope{}, Scope{Name: name}).Error; err != nil {
@@ -88,7 +88,7 @@ func createDefaultScopes(db *gorm.DB) error {
 		ScopeStatsViewOwn, ScopeStatsViewAny,
 		ScopeHistoryClearOwn, ScopeHistoryClearAny,
 		ScopeHistoryClearHardOwn, ScopeHistoryClearHardAny,
-		ScopeModelSet, ScopeUserPromote,
+		ScopeModelSet, ScopeUserPromote, ScopeTTSUse,
 	}
 	assignments := map[string][]string{
 		"user":  userScopes,

elevenlabs.go

@@ -0,0 +1,115 @@
+package main
+
+import (
+	"bytes"
+	"context"
+	"encoding/json"
+	"fmt"
+	"io"
+	"mime/multipart"
+	"net/http"
+
+	tgbot "github.com/go-telegram/bot"
+)
+
+const (
+	elevenLabsTTSURL = "https://api.elevenlabs.io/v1/text-to-speech/"
+	elevenLabsSTTURL = "https://api.elevenlabs.io/v1/speech-to-text"
+	elevenLabsDefaultModel = "eleven_multilingual_v2"
+)
+
+// generateSpeech converts text to an mp3 audio stream via ElevenLabs TTS.
+func (b *Bot) generateSpeech(ctx context.Context, text string) (io.Reader, error) {
+	model := b.config.ElevenLabsModel
+	if model == "" {
+		model = elevenLabsDefaultModel
+	}
+	body, err := json.Marshal(map[string]string{
+		"text":     text,
+		"model_id": model,
+	})
+	if err != nil {
+		return nil, fmt.Errorf("elevenlabs TTS marshal error: %w", err)
+	}
+	req, err := http.NewRequestWithContext(ctx, http.MethodPost,
+		elevenLabsTTSURL+b.config.ElevenLabsVoiceID, bytes.NewReader(body))
+	if err != nil {
+		return nil, fmt.Errorf("elevenlabs TTS request error: %w", err)
+	}
+	req.Header.Set("Content-Type", "application/json")
+	req.Header.Set("xi-api-key", b.config.ElevenLabsAPIKey)
+
+	resp, err := http.DefaultClient.Do(req)
+	if err != nil {
+		return nil, fmt.Errorf("elevenlabs TTS error: %w", err)
+	}
+	if resp.StatusCode != http.StatusOK {
+		defer resp.Body.Close()
+		errBody, _ := io.ReadAll(resp.Body)
+		return nil, fmt.Errorf("elevenlabs TTS error: status %d: %s", resp.StatusCode, errBody)
+	}
+	return resp.Body, nil
+}
+
+// transcribeVoice downloads a Telegram voice file and transcribes it via ElevenLabs STT.
+// Uses a direct multipart HTTP call instead of the SDK wrapper to avoid a bug in the
+// ogen-generated encoder: AdditionalFormats (nil slice) is always written as an empty
+// string with Content-Type: application/json, which ElevenLabs rejects with 400.
+func (b *Bot) transcribeVoice(ctx context.Context, fileID string) (string, error) {
+	// 1. Resolve and download the voice file from Telegram.
+	fileInfo, err := b.tgBot.GetFile(ctx, &tgbot.GetFileParams{FileID: fileID})
+	if err != nil {
+		return "", fmt.Errorf("telegram GetFile error: %w", err)
+	}
+	downloadURL := b.tgBot.FileDownloadLink(fileInfo)
+	audioResp, err := http.Get(downloadURL) //nolint:noctx
+	if err != nil {
+		return "", fmt.Errorf("voice download error: %w", err)
+	}
+	defer audioResp.Body.Close()
+
+	// 2. Build multipart body with binary audio — bypasses SDK encoding issues.
+	var buf bytes.Buffer
+	mw := multipart.NewWriter(&buf)
+	if err := mw.WriteField("model_id", "scribe_v1"); err != nil {
+		return "", fmt.Errorf("multipart write error: %w", err)
+	}
+	part, err := mw.CreateFormFile("file", "audio.ogg")
+	if err != nil {
+		return "", fmt.Errorf("multipart create file error: %w", err)
+	}
+	if _, err := io.Copy(part, audioResp.Body); err != nil {
+		return "", fmt.Errorf("multipart copy error: %w", err)
+	}
+	if err := mw.Close(); err != nil {
+		return "", fmt.Errorf("multipart close error: %w", err)
+	}
+
+	// 3. POST to ElevenLabs STT.
+	req, err := http.NewRequestWithContext(ctx, http.MethodPost,
+		elevenLabsSTTURL, &buf)
+	if err != nil {
+		return "", fmt.Errorf("create STT request error: %w", err)
+	}
+	req.Header.Set("Content-Type", mw.FormDataContentType())
+	req.Header.Set("xi-api-key", b.config.ElevenLabsAPIKey)
+
+	sttResp, err := http.DefaultClient.Do(req)
+	if err != nil {
+		return "", fmt.Errorf("elevenlabs STT request error: %w", err)
+	}
+	defer sttResp.Body.Close()
+
+	if sttResp.StatusCode != http.StatusOK {
+		body, _ := io.ReadAll(sttResp.Body)
+		return "", fmt.Errorf("elevenlabs STT error: status %d: %s", sttResp.StatusCode, body)
+	}
+
+	var result struct {
+		Text string `json:"text"`
+	}
+	if err := json.NewDecoder(sttResp.Body).Decode(&result); err != nil {
+		return "", fmt.Errorf("elevenlabs STT decode error: %w", err)
+	}
+	return result.Text, nil
+}

go.mod

@@ -15,9 +15,12 @@ require (
 	github.com/davecgh/go-spew v1.1.1 // indirect
 	github.com/jinzhu/inflection v1.0.0 // indirect
 	github.com/jinzhu/now v1.1.5 // indirect
+	github.com/kr/pretty v0.3.1 // indirect
 	github.com/mattn/go-sqlite3 v1.14.34 // indirect
 	github.com/pmezard/go-difflib v1.0.0 // indirect
+	github.com/rogpeppe/go-internal v1.14.1 // indirect
 	github.com/stretchr/objx v0.5.3 // indirect
 	golang.org/x/text v0.34.0 // indirect
+	gopkg.in/check.v1 v1.0.0-20201130134442-10cb98267c6c // indirect
 	gopkg.in/yaml.v3 v3.0.1 // indirect
 )

go.sum

@@ -1,3 +1,4 @@
+github.com/creack/pty v1.1.9/go.mod h1:oKZEueFk5CKHvIhNR5MUki03XCEU+Q6VDXinZuGJ33E=
 github.com/davecgh/go-spew v1.1.1 h1:vj9j/u1bqnvCEfJOwUhtlOARqs3+rkHYY13jYWTU97c=
 github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
 github.com/go-telegram/bot v1.19.0 h1:tuvTQhgNietHFRN0HUDhuXsgfgkGSaO8WWwZQW3DMQg=
@@ -6,12 +7,23 @@ github.com/jinzhu/inflection v1.0.0 h1:K317FqzuhWc8YvSVlFMCCUb36O/S9MCKRDI7QkRKD
 github.com/jinzhu/inflection v1.0.0/go.mod h1:h+uFLlag+Qp1Va5pdKtLDYj+kHp5pxUVkryuEj+Srlc=
 github.com/jinzhu/now v1.1.5 h1:/o9tlHleP7gOFmsnYNz3RGnqzefHA47wQpKrrdTIwXQ=
 github.com/jinzhu/now v1.1.5/go.mod h1:d3SSVoowX0Lcu0IBviAWJpolVfI5UJVZZ7cO71lE/z8=
+github.com/kr/pretty v0.2.1/go.mod h1:ipq/a2n7PKx3OHsz4KJII5eveXtPO4qwEXGdVfWzfnI=
+github.com/kr/pretty v0.3.1 h1:flRD4NNwYAUpkphVc1HcthR4KEIFJ65n8Mw5qdRn3LE=
+github.com/kr/pretty v0.3.1/go.mod h1:hoEshYVHaxMs3cyo3Yncou5ZscifuDolrwPKZanG3xk=
+github.com/kr/pty v1.1.1/go.mod h1:pFQYn66WHrOpPYNljwOMqo10TkYh1fy3cYio2l3bCsQ=
+github.com/kr/text v0.1.0/go.mod h1:4Jbv+DJW3UT/LiOwJeYQe1efqtUx/iVham/4vfdArNI=
+github.com/kr/text v0.2.0 h1:5Nx0Ya0ZqY2ygV366QzturHI13Jq95ApcVaJBhpS+AY=
+github.com/kr/text v0.2.0/go.mod h1:eLer722TekiGuMkidMxC/pM04lWEeraHUUmBw8l2grE=
 github.com/liushuangls/go-anthropic/v2 v2.17.1 h1:ca3oFzgQHs9/mJr+xx2XFQIYcQLM2rDCqieUx0g+8p4=
 github.com/liushuangls/go-anthropic/v2 v2.17.1/go.mod h1:a550cJXPoTG2FL3DvfKG2zzD5O2vjgvo4tHtoGPzFLU=
 github.com/mattn/go-sqlite3 v1.14.34 h1:3NtcvcUnFBPsuRcno8pUtupspG/GM+9nZ88zgJcp6Zk=
 github.com/mattn/go-sqlite3 v1.14.34/go.mod h1:Uh1q+B4BYcTPb+yiD3kU8Ct7aC0hY9fxUwlHK0RXw+Y=
+github.com/pkg/diff v0.0.0-20210226163009-20ebb0f2a09e/go.mod h1:pJLUxLENpZxwdsKMEsNbx1VGcRFpLqf3715MtcvvzbA=
 github.com/pmezard/go-difflib v1.0.0 h1:4DBwDE0NGyQoBHbLQYPwSUPoCMWR5BEzIk/f1lZbAQM=
 github.com/pmezard/go-difflib v1.0.0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZNVY4sRDYZ/4=
+github.com/rogpeppe/go-internal v1.9.0/go.mod h1:WtVeX8xhTBvf0smdhujwtBcq4Qrzq/fJaraNFVN+nFs=
+github.com/rogpeppe/go-internal v1.14.1 h1:UQB4HGPB6osV0SQTLymcB4TgvyWu6ZyliaW0tI/otEQ=
+github.com/rogpeppe/go-internal v1.14.1/go.mod h1:MaRKkUm5W0goXpeCfT7UZI6fk/L7L7so1lCWt35ZSgc=
 github.com/stretchr/objx v0.5.3 h1:jmXUvGomnU1o3W/V5h2VEradbpJDwGrzugQQvL0POH4=
 github.com/stretchr/objx v0.5.3/go.mod h1:rDQraq+vQZU7Fde9LOZLr8Tax6zZvy4kuNKF+QYS+U0=
 github.com/stretchr/testify v1.11.1 h1:7s2iGBzp5EwR7/aIZr8ao5+dra3wiQyKjjFuvgVKu7U=
@@ -20,8 +32,9 @@ golang.org/x/text v0.34.0 h1:oL/Qq0Kdaqxa1KbNeMKwQq0reLCCaFtqu2eNuSeNHbk=
 golang.org/x/text v0.34.0/go.mod h1:homfLqTYRFyVYemLBFl5GgL/DWEiH5wcsQ5gSh1yziA=
 golang.org/x/time v0.14.0 h1:MRx4UaLrDotUKUdCIqzPC48t1Y9hANFKIRpNx+Te8PI=
 golang.org/x/time v0.14.0/go.mod h1:eL/Oa2bBBK0TkX57Fyni+NgnyQQN4LitPmob2Hjnqw4=
-gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405 h1:yhCVgyC4o1eVCa2tZl7eS0r+SDo693bJlVdllGtEeKM=
 gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
+gopkg.in/check.v1 v1.0.0-20201130134442-10cb98267c6c h1:Hei/4ADfdWqJk1ZMxUNpqntNwaWcugrBjAiHlqqRiVk=
+gopkg.in/check.v1 v1.0.0-20201130134442-10cb98267c6c/go.mod h1:JHkPIbrfpd72SG/EVd6muEfDQjcINNoR0C8j2r3qZ4Q=
 gopkg.in/yaml.v3 v3.0.1 h1:fxVm/GzAzEWqLHuvctI91KS9hhNmmWOoWu0XTYJS7CA=
 gopkg.in/yaml.v3 v3.0.1/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=
 gorm.io/driver/sqlite v1.6.0 h1:WHRRrIiulaPiPFmDcod6prc4l2VGVWHz80KspNsxSfQ=

handlers.go

@@ -12,6 +12,85 @@ import (
 	"github.com/liushuangls/go-anthropic/v2"
 )
 
+func (b *Bot) handleVoiceMessage(ctx context.Context, message *models.Message, userMsg Message, chatID, userID int64, username, firstName, lastName string, isPremium bool, languageCode string, messageTime int, isNewChat, isOwner bool, businessConnectionID string) {
+	// If ElevenLabs is not configured, respond with text — consistent with all other error paths.
+	if b.config.ElevenLabsAPIKey == "" {
+		if err := b.sendResponse(ctx, chatID, "I don't understand voice messages.", businessConnectionID); err != nil {
+			ErrorLogger.Printf("Error sending voice-unsupported message: %v", err)
+		}
+		return
+	}
+
+	if !b.hasScope(userID, ScopeTTSUse) {
+		if err := b.sendResponse(ctx, chatID, "You don't have permission to use voice features.", businessConnectionID); err != nil {
+			ErrorLogger.Printf("Error sending permission denied message: %v", err)
+		}
+		return
+	}
+
+	transcript, err := b.transcribeVoice(ctx, message.Voice.FileID)
+	if err != nil {
+		ErrorLogger.Printf("Error transcribing voice message from user %d: %v", userID, err)
+		if err := b.sendResponse(ctx, chatID, "Sorry, I couldn't understand your voice message.", businessConnectionID); err != nil {
+			ErrorLogger.Printf("Error sending transcription error message: %v", err)
+		}
+		return
+	}
+
+	// Replace the stored "[Voice message]" placeholder with the actual transcript,
+	// keeping the audit record intact while giving the LLM meaningful context.
+	if err := b.db.Model(&userMsg).Update("text", transcript).Error; err != nil {
+		ErrorLogger.Printf("Error updating voice transcript in DB: %v", err)
+	}
+	b.chatMemoriesMu.Lock()
+	if mem, exists := b.chatMemories[chatID]; exists {
+		for i := len(mem.Messages) - 1; i >= 0; i-- {
+			if mem.Messages[i].ID == userMsg.ID {
+				mem.Messages[i].Text = transcript
+				break
+			}
+		}
+	}
+	b.chatMemoriesMu.Unlock()
+
+	chatMemory := b.getOrCreateChatMemory(chatID)
+	contextMessages := b.prepareContextMessages(chatMemory)
+	response, err := b.getAnthropicResponse(ctx, contextMessages, isNewChat, isOwner, false, username, firstName, lastName, isPremium, languageCode, messageTime)
+	if err != nil {
+		ErrorLogger.Printf("Error getting Anthropic response for voice: %v", err)
+		if err := b.sendResponse(ctx, chatID, b.anthropicErrorResponse(err, userID), businessConnectionID); err != nil {
+			ErrorLogger.Printf("Error sending anthropic error response: %v", err)
+		}
+		return
+	}
+
+	audioReader, err := b.generateSpeech(ctx, response)
+	if err != nil {
+		// TTS failed — fall back to text so the user still gets a reply.
+		ErrorLogger.Printf("Error generating speech, falling back to text: %v", err)
+		if err := b.sendResponse(ctx, chatID, response, businessConnectionID); err != nil {
+			ErrorLogger.Printf("Error sending text fallback: %v", err)
+		}
+		return
+	}
+
+	// Store the assistant response before sending.
+	if _, err := b.screenOutgoingMessage(chatID, response); err != nil {
+		ErrorLogger.Printf("Error storing assistant voice response: %v", err)
+	}
+
+	params := &bot.SendAudioParams{
+		ChatID: chatID,
+		Audio:  &models.InputFileUpload{Filename: "response.mp3", Data: audioReader},
+	}
+	if businessConnectionID != "" {
+		params.BusinessConnectionID = businessConnectionID
+	}
+	if _, err := b.tgBot.SendAudio(ctx, params); err != nil {
+		ErrorLogger.Printf("Error sending audio to chat %d: %v", chatID, err)
+	}
+}
+
 // anthropicErrorResponse returns the message to send back to the user when getAnthropicResponse
 // fails. Admins and owners receive an actionable hint when the model is deprecated; regular users
 // always get the generic fallback to avoid leaking internal details.
@@ -74,8 +153,7 @@ func (b *Bot) handleUpdate(ctx context.Context, tgBot *bot.Bot, update *models.U
 
 	// Determine if the user is the owner
 	var isOwner bool
-	err = b.db.Where("telegram_id = ? AND bot_id = ? AND is_owner = ?", userID, b.botID, true).First(&User{}).Error
+	if b.db.Where("telegram_id = ? AND bot_id = ? AND is_owner = ?", userID, b.botID, true).First(&User{}).Error == nil {
-	if err == nil {
 		isOwner = true
 	}
 
@@ -236,6 +314,13 @@ func (b *Bot) handleUpdate(ctx context.Context, tgBot *bot.Bot, update *models.U
 		return
 	}
 
+	// Check if the message contains a voice note (context is built inside the handler
+	// after the transcript replaces the placeholder, so it must not be built here).
+	if message.Voice != nil {
+		b.handleVoiceMessage(ctx, message, userMsg, chatID, userID, username, firstName, lastName, isPremium, languageCode, messageTime, isNewChatFlag, isOwner, businessConnectionID)
+		return
+	}
+
 	// Build context once — shared by the sticker and text response paths.
 	chatMemory := b.getOrCreateChatMemory(chatID)
 	contextMessages := b.prepareContextMessages(chatMemory)

models.go

@@ -60,6 +60,7 @@ const (
 	ScopeHistoryClearHardAny = "history:clear_hard:any"
 	ScopeModelSet            = "model:set"
 	ScopeUserPromote         = "user:promote"
+	ScopeTTSUse              = "tts:use"
 )
 
 type Scope struct {

telegram_client.go

@@ -11,6 +11,9 @@ import (
 // TelegramClient defines the methods required from the Telegram bot.
 type TelegramClient interface {
 	SendMessage(ctx context.Context, params *bot.SendMessageParams) (*models.Message, error)
+	SendAudio(ctx context.Context, params *bot.SendAudioParams) (*models.Message, error)
 	SetMyCommands(ctx context.Context, params *bot.SetMyCommandsParams) (bool, error)
+	GetFile(ctx context.Context, params *bot.GetFileParams) (*models.File, error)
+	FileDownloadLink(f *models.File) string
 	Start(ctx context.Context)
 }

telegram_client_mock.go

@@ -12,9 +12,12 @@ import (
 // MockTelegramClient is a mock implementation of TelegramClient for testing.
 type MockTelegramClient struct {
 	mock.Mock
-	SendMessageFunc   func(ctx context.Context, params *bot.SendMessageParams) (*models.Message, error)
+	SendMessageFunc      func(ctx context.Context, params *bot.SendMessageParams) (*models.Message, error)
-	SetMyCommandsFunc func(ctx context.Context, params *bot.SetMyCommandsParams) (bool, error)
+	SendAudioFunc        func(ctx context.Context, params *bot.SendAudioParams) (*models.Message, error)
-	StartFunc         func(ctx context.Context)
+	SetMyCommandsFunc    func(ctx context.Context, params *bot.SetMyCommandsParams) (bool, error)
+	GetFileFunc          func(ctx context.Context, params *bot.GetFileParams) (*models.File, error)
+	FileDownloadLinkFunc func(f *models.File) string
+	StartFunc            func(ctx context.Context)
 }
 
 // SendMessage mocks sending a message.
@@ -37,6 +40,30 @@ func (m *MockTelegramClient) SetMyCommands(ctx context.Context, params *bot.SetM
 	return true, nil
 }
 
+// SendAudio mocks sending an audio message.
+func (m *MockTelegramClient) SendAudio(ctx context.Context, params *bot.SendAudioParams) (*models.Message, error) {
+	if m.SendAudioFunc != nil {
+		return m.SendAudioFunc(ctx, params)
+	}
+	return nil, nil
+}
+
+// GetFile mocks retrieving file info from Telegram.
+func (m *MockTelegramClient) GetFile(ctx context.Context, params *bot.GetFileParams) (*models.File, error) {
+	if m.GetFileFunc != nil {
+		return m.GetFileFunc(ctx, params)
+	}
+	return &models.File{}, nil
+}
+
+// FileDownloadLink mocks building the file download URL.
+func (m *MockTelegramClient) FileDownloadLink(f *models.File) string {
+	if m.FileDownloadLinkFunc != nil {
+		return m.FileDownloadLinkFunc(f)
+	}
+	return ""
+}
+
 // Start mocks starting the Telegram client.
 func (m *MockTelegramClient) Start(ctx context.Context) {
 	if m.StartFunc != nil {