Initial commit for deployment

app/services/chatbot_service.py

@@ -0,0 +1,105 @@
+"""
+Service for chatbot functionality without database dependency.
+"""
+
+from typing import List, Dict, Any, Optional
+
+class ChatbotService:
+    """Service for chatbot functionality."""
+    
+    def __init__(self):
+        """Initialize the chatbot service."""
+        # In-memory storage for chat history
+        self.chat_history = {}
+        self.current_chat_id = 0
+    
+    def create_chat(self, user_id: str) -> int:
+        """
+        Create a new chat session.
+        
+        Args:
+            user_id: ID of the user creating the chat.
+            
+        Returns:
+            ID of the created chat.
+        """
+        self.current_chat_id += 1
+        chat_id = self.current_chat_id
+        
+        self.chat_history[chat_id] = {
+            'user_id': user_id,
+            'messages': []
+        }
+        
+        return chat_id
+    
+    def add_message(self, chat_id: int, content: str, is_user: bool = True) -> Dict[str, Any]:
+        """
+        Add a message to a chat.
+        
+        Args:
+            chat_id: ID of the chat.
+            content: Message content.
+            is_user: Whether this is a user message (vs. bot message).
+            
+        Returns:
+            Added message.
+        """
+        if chat_id not in self.chat_history:
+            raise ValueError(f"Chat with ID {chat_id} not found")
+        
+        message = {
+            'content': content,
+            'is_user': is_user,
+            'timestamp': self._get_timestamp()
+        }
+        
+        self.chat_history[chat_id]['messages'].append(message)
+        
+        return message
+    
+    def get_chat_messages(self, chat_id: int) -> List[Dict[str, Any]]:
+        """
+        Get all messages for a chat.
+        
+        Args:
+            chat_id: ID of the chat.
+            
+        Returns:
+            List of messages.
+        """
+        if chat_id not in self.chat_history:
+            raise ValueError(f"Chat with ID {chat_id} not found")
+        
+        return self.chat_history[chat_id]['messages']
+    
+    def get_response(self, chat_id: int, message: str) -> str:
+        """
+        Get a response from the chatbot.
+        
+        Args:
+            chat_id: ID of the chat.
+            message: User message.
+            
+        Returns:
+            Bot response.
+        """
+        # Add user message to chat history
+        self.add_message(chat_id, message, is_user=True)
+        
+        # Simple echo response for now
+        response = f"You said: {message}"
+        
+        # Add bot response to chat history
+        self.add_message(chat_id, response, is_user=False)
+        
+        return response
+    
+    def _get_timestamp(self) -> str:
+        """Get current timestamp."""
+        from datetime import datetime
+        return datetime.utcnow().isoformat()
+
+
+# Create a singleton instance
+chatbot_service = ChatbotService()