feat(teamsbot): chat message handling, response channel (voice/chat/both), join mode (systemBot/anonymous/userAccount)

Co-authored-by: Cursor <cursoragent@cursor.com>

modules/features/teamsbot/datamodelTeamsbot.py

@@ -46,6 +46,20 @@ class TeamsbotResponseMode(str, Enum):
     TRANSCRIBE_ONLY = "transcribeOnly"  # Only transcribe, no AI responses
 
 
+class TeamsbotResponseChannel(str, Enum):
+    """Channel for bot responses."""
+    VOICE = "voice"               # Bot responds only via voice (TTS)
+    CHAT = "chat"                 # Bot responds only via chat message
+    BOTH = "both"                 # Bot responds via voice AND chat
+
+
+class TeamsbotJoinMode(str, Enum):
+    """How the bot joins the meeting."""
+    SYSTEM_BOT = "systemBot"      # Join with system bot account (backend-managed credentials)
+    ANONYMOUS = "anonymous"       # Join as anonymous guest
+    USER_ACCOUNT = "userAccount"  # Join with user's own Microsoft account (OAuth)
+
+
 # ============================================================================
 # Database Models (stored in PostgreSQL)
 # ============================================================================
@@ -106,7 +120,7 @@ class TeamsbotBotResponse(BaseModel):
 # ============================================================================
 
 class TeamsbotConfig(BaseModel):
-    """Configuration for a Teams Bot feature instance."""
+    """Configuration for a Teams Bot feature instance (serves as default template for new users)."""
     botName: str = Field(default="AI Assistant", description="Default bot display name")
     backgroundImageUrl: Optional[str] = Field(default=None, description="Default background image URL")
     aiSystemPrompt: str = Field(
@@ -114,6 +128,7 @@ class TeamsbotConfig(BaseModel):
         description="Custom system prompt for the AI analysis"
     )
     responseMode: TeamsbotResponseMode = Field(default=TeamsbotResponseMode.AUTO, description="How the bot responds")
+    responseChannel: TeamsbotResponseChannel = Field(default=TeamsbotResponseChannel.VOICE, description="Channel for bot responses: voice, chat, or both")
     language: str = Field(default="de-DE", description="Primary language for STT/TTS")
     voiceId: Optional[str] = Field(default=None, description="Google TTS voice ID (e.g., de-DE-Standard-A)")
     browserBotUrl: Optional[str] = Field(default=None, description="URL of the Browser Bot service. Falls back to TEAMSBOT_BROWSER_BOT_URL env variable if not set per-instance.")
@@ -141,6 +156,7 @@ class TeamsbotStartSessionRequest(BaseModel):
     botName: Optional[str] = Field(default=None, description="Override bot name for this session")
     backgroundImageUrl: Optional[str] = Field(default=None, description="Override background image for this session")
     connectionId: Optional[str] = Field(default=None, description="Microsoft connection ID for Graph API access")
+    joinMode: Optional[TeamsbotJoinMode] = Field(default=None, description="How the bot joins: systemBot, anonymous, or userAccount. Defaults to systemBot if credentials configured, else anonymous.")
 
 
 class TeamsbotSessionResponse(BaseModel):
@@ -156,6 +172,7 @@ class TeamsbotConfigUpdateRequest(BaseModel):
     backgroundImageUrl: Optional[str] = None
     aiSystemPrompt: Optional[str] = None
     responseMode: Optional[TeamsbotResponseMode] = None
+    responseChannel: Optional[TeamsbotResponseChannel] = None
     language: Optional[str] = None
     voiceId: Optional[str] = None
     browserBotUrl: Optional[str] = None

modules/features/teamsbot/routeFeatureTeamsbot.py

@@ -30,6 +30,7 @@ from .datamodelTeamsbot import (
     TeamsbotSessionResponse,
     TeamsbotConfigUpdateRequest,
     TeamsbotConfig,
+    TeamsbotJoinMode,
 )
 
 # Import service
@@ -186,8 +187,35 @@ async def startSession(
     appApiUrl = APP_CONFIG.get("APP_API_URL", "")
     gatewayBaseUrl = appApiUrl.rstrip("/") if appApiUrl else str(request.base_url).rstrip("/")
     
+    # Determine effective join mode
+    joinMode = body.joinMode
+    if not joinMode:
+        # Default: use system bot if credentials are configured, otherwise anonymous
+        if config.botAccountEmail and config.botAccountPassword:
+            joinMode = TeamsbotJoinMode.SYSTEM_BOT
+        else:
+            joinMode = TeamsbotJoinMode.ANONYMOUS
+    
+    # Resolve credentials based on join mode
+    effectiveEmail = None
+    effectivePassword = None
+    if joinMode == TeamsbotJoinMode.SYSTEM_BOT:
+        effectiveEmail = config.botAccountEmail
+        effectivePassword = config.botAccountPassword
+    elif joinMode == TeamsbotJoinMode.USER_ACCOUNT:
+        # TODO: Resolve OAuth token from user's Microsoft connection
+        logger.info(f"User account join mode requested but not yet implemented - falling back to anonymous")
+        joinMode = TeamsbotJoinMode.ANONYMOUS
+    # ANONYMOUS mode: no credentials
+
+    # Temporarily override config credentials for this session's join mode
+    sessionConfig = config.model_copy(update={
+        "botAccountEmail": effectiveEmail,
+        "botAccountPassword": effectivePassword,
+    })
+
     # Start the bot in background (join meeting via bridge)
-    service = TeamsbotService(context.user, mandateId, instanceId, config)
+    service = TeamsbotService(context.user, mandateId, instanceId, sessionConfig)
     asyncio.create_task(
         service.joinMeeting(sessionId, cleanMeetingUrl, body.connectionId, gatewayBaseUrl)
     )

modules/features/teamsbot/service.py

@@ -25,6 +25,7 @@ from .datamodelTeamsbot import (
     TeamsbotResponseType,
     TeamsbotConfig,
     TeamsbotResponseMode,
+    TeamsbotResponseChannel,
     SpeechTeamsResponse,
 )
 from .browserBotConnector import BrowserBotConnector
@@ -238,6 +239,20 @@ class TeamsbotService:
                         websocket=websocket,
                     )
 
+                elif msgType == "chatMessage":
+                    chat = message.get("chat", {})
+                    logger.info(f"[WS-DEBUG] Chat message received: speaker={chat.get('speaker')}, text={chat.get('text', '')[:60]}...")
+                    await self._processTranscript(
+                        sessionId=sessionId,
+                        speaker=chat.get("speaker", "Unknown"),
+                        text=chat.get("text", ""),
+                        isFinal=True,
+                        interface=interface,
+                        voiceInterface=voiceInterface,
+                        websocket=websocket,
+                        source="chat",
+                    )
+
                 elif msgType == "status":
                     status = message.get("status")
                     errorMessage = message.get("message")
@@ -300,8 +315,9 @@ class TeamsbotService:
         interface,
         voiceInterface,
         websocket: WebSocket,
+        source: str = "caption",
     ):
-        """Process a transcript segment from the browser bot's caption scraping."""
+        """Process a transcript segment from captions or chat messages."""
         
         text = text.strip()
         if not text:
@@ -325,11 +341,12 @@ class TeamsbotService:
 
         createdTranscript = interface.createTranscript(transcriptData)
 
-        # Update context buffer
+        # Update context buffer (mark source for chat messages)
         self._contextBuffer.append({
             "speaker": speaker or "Unknown",
             "text": text,
             "timestamp": getUtcTimestamp(),
+            "source": source,
         })
         # Keep only last N segments
         maxSegments = self.config.contextWindowSegments
@@ -442,13 +459,17 @@ class TeamsbotService:
         self._lastAiCallTime = time.time()
 
         # Build transcript context from buffer.
-        # Mark bot's own utterances so the AI knows what it already said.
+        # Mark bot's own utterances and chat messages for the AI.
         contextLines = []
         for segment in self._contextBuffer:
             speaker = segment.get("speaker", "Unknown")
             text = segment.get("text", "")
+            segSource = segment.get("source", "caption")
+            prefix = "Chat" if segSource == "chat" else ""
             if self._isBotSpeaker(speaker):
                 contextLines.append(f"[YOU ({self.config.botName})]: {text}")
+            elif prefix:
+                contextLines.append(f"[{prefix}: {speaker}]: {text}")
             else:
                 contextLines.append(f"[{speaker}]: {text}")
         
@@ -522,10 +543,19 @@ class TeamsbotService:
                     })
                     return
 
-                # Auto mode: send voice + chat response
+                # Determine response channel (voice, chat, or both)
+                channel = self.config.responseChannel
                 responseType = TeamsbotResponseType.BOTH
                 
-                # 4a: TTS -> Audio to bridge
+                if channel == TeamsbotResponseChannel.VOICE:
+                    responseType = TeamsbotResponseType.AUDIO
+                elif channel == TeamsbotResponseChannel.CHAT:
+                    responseType = TeamsbotResponseType.CHAT
+                else:
+                    responseType = TeamsbotResponseType.BOTH
+
+                # 4a: Voice response (TTS -> Audio to bot)
+                if channel in (TeamsbotResponseChannel.VOICE, TeamsbotResponseChannel.BOTH):
                     try:
                         ttsResult = await voiceInterface.textToSpeech(
                             text=speechResult.responseText,
@@ -536,8 +566,6 @@ class TeamsbotService:
                         if ttsResult and isinstance(ttsResult, dict):
                             audioContent = ttsResult.get("audioContent")
                             if audioContent and websocket:
-                            # Send TTS audio to bot via WebSocket
-                            # Bot expects: {type: "playAudio", sessionId, audio: {data, format}}
                                 await websocket.send_text(json.dumps({
                                     "type": "playAudio",
                                     "sessionId": sessionId,
@@ -550,8 +578,21 @@ class TeamsbotService:
                                 logger.info(f"TTS audio generated for session {sessionId} (HTTP mode - no WebSocket for playback)")
                     except Exception as ttsErr:
                         logger.warning(f"TTS failed for session {sessionId}: {ttsErr}")
+                        if responseType == TeamsbotResponseType.AUDIO:
                             responseType = TeamsbotResponseType.CHAT  # Fallback to chat only
 
+                # 4b: Chat response (send text message to meeting chat)
+                if channel in (TeamsbotResponseChannel.CHAT, TeamsbotResponseChannel.BOTH):
+                    try:
+                        if websocket:
+                            await websocket.send_text(json.dumps({
+                                "type": "sendChatMessage",
+                                "sessionId": sessionId,
+                                "text": speechResult.responseText,
+                            }))
+                    except Exception as chatErr:
+                        logger.warning(f"Chat message send failed for session {sessionId}: {chatErr}")
+
                 # 4b: Store bot response
                 botResponseData = TeamsbotBotResponse(
                     sessionId=sessionId,