feat(fase3): add conversation transfer and note API routes

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

services/api-gateway/app/routers/whatsapp.py

@@ -15,8 +15,11 @@ from app.models.whatsapp import (
 from app.schemas.whatsapp import (
     WhatsAppAccountCreate, WhatsAppAccountResponse,
     ConversationResponse, ConversationDetailResponse,
-    SendMessageRequest, MessageResponse, InternalEventRequest
+    SendMessageRequest, MessageResponse, InternalEventRequest,
+    TransferToQueueRequest, TransferToAgentRequest,
+    ResolveConversationRequest, InternalNoteRequest
 )
+from app.services.assignment import AssignmentService
 
 router = APIRouter(prefix="/api/whatsapp", tags=["whatsapp"])
 settings = get_settings()
@@ -362,3 +365,86 @@ async def flow_send_message(
 
     db.commit()
     return {"success": True, "message_id": str(message.id)}
+
+
+@router.post("/conversations/{conversation_id}/transfer-to-queue")
+def transfer_to_queue(
+    conversation_id: UUID,
+    request: TransferToQueueRequest,
+    db: Session = Depends(get_db),
+    current_user: User = Depends(get_current_user),
+):
+    service = AssignmentService(db)
+    if service.transfer_to_queue(conversation_id, request.queue_id):
+        return {"success": True}
+    raise HTTPException(status_code=400, detail="Transfer failed")
+
+
+@router.post("/conversations/{conversation_id}/transfer-to-agent")
+def transfer_to_agent(
+    conversation_id: UUID,
+    request: TransferToAgentRequest,
+    db: Session = Depends(get_db),
+    current_user: User = Depends(get_current_user),
+):
+    service = AssignmentService(db)
+    if service.transfer_to_agent(conversation_id, request.agent_id):
+        return {"success": True}
+    raise HTTPException(status_code=400, detail="Transfer failed")
+
+
+@router.post("/conversations/{conversation_id}/transfer-to-bot")
+def transfer_to_bot(
+    conversation_id: UUID,
+    db: Session = Depends(get_db),
+    current_user: User = Depends(get_current_user),
+):
+    service = AssignmentService(db)
+    if service.transfer_to_bot(conversation_id):
+        return {"success": True}
+    raise HTTPException(status_code=400, detail="Transfer failed")
+
+
+@router.post("/conversations/{conversation_id}/resolve")
+def resolve_conversation(
+    conversation_id: UUID,
+    request: ResolveConversationRequest,
+    db: Session = Depends(get_db),
+    current_user: User = Depends(get_current_user),
+):
+    service = AssignmentService(db)
+    if service.resolve_conversation(
+        conversation_id,
+        request.csat_score,
+        request.csat_feedback
+    ):
+        return {"success": True}
+    raise HTTPException(status_code=400, detail="Failed to resolve")
+
+
+@router.post("/conversations/{conversation_id}/notes")
+def add_internal_note(
+    conversation_id: UUID,
+    request: InternalNoteRequest,
+    db: Session = Depends(get_db),
+    current_user: User = Depends(get_current_user),
+):
+    conversation = db.query(Conversation).filter(
+        Conversation.id == conversation_id
+    ).first()
+    if not conversation:
+        raise HTTPException(status_code=404, detail="Conversation not found")
+
+    message = Message(
+        conversation_id=conversation.id,
+        direction=MessageDirection.OUTBOUND,
+        type=MessageType.TEXT,
+        content=request.content,
+        sent_by=current_user.id,
+        is_internal_note=True,
+        status=MessageStatus.DELIVERED,
+    )
+    db.add(message)
+    db.commit()
+    db.refresh(message)
+    return {"success": True, "message_id": str(message.id)}