suna/agentpress/thread_manager.py

"""
Conversation thread management system for AgentPress.

This module provides comprehensive conversation management, including:
- Thread creation and persistence
- Message handling with support for text and images
- Tool registration and execution
- LLM interaction with streaming support
- Error handling and cleanup
"""

import json
import logging
import asyncio
import uuid
from typing import List, Dict, Any, Optional, Type, Union, AsyncGenerator
from agentpress.llm import make_llm_api_call
from agentpress.tool import Tool, ToolResult
from agentpress.tool_registry import ToolRegistry
from agentpress.processor.llm_response_processor import LLMResponseProcessor
from agentpress.processor.base_processors import ToolParserBase, ToolExecutorBase, ResultsAdderBase
from agentpress.db_connection import DBConnection

from agentpress.processor.xml.xml_tool_parser import XMLToolParser
from agentpress.processor.xml.xml_tool_executor import XMLToolExecutor
from agentpress.processor.xml.xml_results_adder import XMLResultsAdder
from agentpress.processor.standard.standard_tool_parser import StandardToolParser
from agentpress.processor.standard.standard_tool_executor import StandardToolExecutor
from agentpress.processor.standard.standard_results_adder import StandardResultsAdder

class ThreadManager:
    """Manages conversation threads with LLM models and tool execution.
    
    Provides comprehensive conversation management, handling message threading,
    tool registration, and LLM interactions with support for both standard and
    XML-based tool execution patterns.
    """

    def __init__(self):
        """Initialize ThreadManager."""
        self.db = DBConnection()
        self.tool_registry = ToolRegistry()

    def add_tool(self, tool_class: Type[Tool], function_names: Optional[List[str]] = None, **kwargs):
        """Add a tool to the ThreadManager."""
        self.tool_registry.register_tool(tool_class, function_names, **kwargs)

    async def create_thread(self) -> str:
        """Create a new conversation thread."""
        thread_id = str(uuid.uuid4())
        await self.db.execute(
            "INSERT INTO threads (thread_id, messages) VALUES (?, ?)",
            (thread_id, json.dumps([]))
        )
        return thread_id

    async def add_message(self, thread_id: str, message_data: Dict[str, Any], images: Optional[List[Dict[str, Any]]] = None):
        """Add a message to an existing thread."""
        logging.info(f"Adding message to thread {thread_id} with images: {images}")
        
        try:
            async with self.db.transaction() as conn:
                # Handle cleanup of incomplete tool calls
                if message_data['role'] == 'user':
                    messages = await self.get_messages(thread_id)
                    last_assistant_index = next((i for i in reversed(range(len(messages))) 
                        if messages[i]['role'] == 'assistant' and 'tool_calls' in messages[i]), None)
                    
                    if last_assistant_index is not None:
                        tool_call_count = len(messages[last_assistant_index]['tool_calls'])
                        tool_response_count = sum(1 for msg in messages[last_assistant_index+1:] 
                                               if msg['role'] == 'tool')
                        
                        if tool_call_count != tool_response_count:
                            await self.cleanup_incomplete_tool_calls(thread_id)

                # Convert ToolResult instances to strings
                for key, value in message_data.items():
                    if isinstance(value, ToolResult):
                        message_data[key] = str(value)

                # Handle image attachments
                if images:
                    if isinstance(message_data['content'], str):
                        message_data['content'] = [{"type": "text", "text": message_data['content']}]
                    elif not isinstance(message_data['content'], list):
                        message_data['content'] = []

                    for image in images:
                        image_content = {
                            "type": "image_url",
                            "image_url": {
                                "url": f"data:{image['content_type']};base64,{image['base64']}",
                                "detail": "high"
                            }
                        }
                        message_data['content'].append(image_content)

                # Get current messages
                row = await self.db.fetch_one(
                    "SELECT messages FROM threads WHERE thread_id = ?",
                    (thread_id,)
                )
                if not row:
                    raise ValueError(f"Thread {thread_id} not found")
                
                messages = json.loads(row[0])
                messages.append(message_data)
                
                # Update thread
                await conn.execute(
                    """
                    UPDATE threads 
                    SET messages = ?, updated_at = CURRENT_TIMESTAMP 
                    WHERE thread_id = ?
                    """,
                    (json.dumps(messages), thread_id)
                )

                logging.info(f"Message added to thread {thread_id}: {message_data}")
            
        except Exception as e:
            logging.error(f"Failed to add message to thread {thread_id}: {e}")
            raise e

    async def get_messages(
        self, 
        thread_id: str,
        hide_tool_msgs: bool = False,
        only_latest_assistant: bool = False,
        regular_list: bool = True
    ) -> List[Dict[str, Any]]:
        """Retrieve messages from a thread with optional filtering."""
        row = await self.db.fetch_one(
            "SELECT messages FROM threads WHERE thread_id = ?",
            (thread_id,)
        )
        if not row:
            return []
        
        messages = json.loads(row[0])
        
        if only_latest_assistant:
            for msg in reversed(messages):
                if msg.get('role') == 'assistant':
                    return [msg]
            return []
        
        if hide_tool_msgs:
            messages = [
                {k: v for k, v in msg.items() if k != 'tool_calls'}
                for msg in messages
                if msg.get('role') != 'tool'
            ]
        
        if regular_list:
            messages = [
                msg for msg in messages
                if msg.get('role') in ['system', 'assistant', 'tool', 'user']
            ]
        
        return messages

    async def _update_message(self, thread_id: str, message: Dict[str, Any]):
        """Update an existing message in the thread."""
        async with self.db.transaction() as conn:
            row = await self.db.fetch_one(
                "SELECT messages FROM threads WHERE thread_id = ?",
                (thread_id,)
            )
            if not row:
                return
            
            messages = json.loads(row[0])
            
            # Find and update the last assistant message
            for i in reversed(range(len(messages))):
                if messages[i].get('role') == 'assistant':
                    messages[i] = message
                    break
            
            await conn.execute(
                """
                UPDATE threads 
                SET messages = ?, updated_at = CURRENT_TIMESTAMP 
                WHERE thread_id = ?
                """,
                (json.dumps(messages), thread_id)
            )

    async def cleanup_incomplete_tool_calls(self, thread_id: str):
        """Clean up incomplete tool calls in a thread."""
        messages = await self.get_messages(thread_id)
        last_assistant_message = next((m for m in reversed(messages) 
            if m['role'] == 'assistant' and 'tool_calls' in m), None)

        if last_assistant_message:
            tool_calls = last_assistant_message.get('tool_calls', [])
            tool_responses = [m for m in messages[messages.index(last_assistant_message)+1:] 
                            if m['role'] == 'tool']

            if len(tool_calls) != len(tool_responses):
                failed_tool_results = []
                for tool_call in tool_calls[len(tool_responses):]:
                    failed_tool_result = {
                        "role": "tool",
                        "tool_call_id": tool_call['id'],
                        "name": tool_call['function']['name'],
                        "content": "ToolResult(success=False, output='Execution interrupted. Session was stopped.')"
                    }
                    failed_tool_results.append(failed_tool_result)

                assistant_index = messages.index(last_assistant_message)
                messages[assistant_index+1:assistant_index+1] = failed_tool_results

                async with self.db.transaction() as conn:
                    await conn.execute(
                        """
                        UPDATE threads 
                        SET messages = ?, updated_at = CURRENT_TIMESTAMP 
                        WHERE thread_id = ?
                        """,
                        (json.dumps(messages), thread_id)
                    )
                return True
        return False

    async def run_thread(
        self,
        thread_id: str,
        system_message: Dict[str, Any],
        model_name: str,
        temperature: float = 0,
        max_tokens: Optional[int] = None,
        tool_choice: str = "auto",
        temporary_message: Optional[Dict[str, Any]] = None,
        native_tool_calling: bool = False,
        xml_tool_calling: bool = False,
        execute_tools: bool = True,
        stream: bool = False,
        execute_tools_on_stream: bool = False,
        parallel_tool_execution: bool = False,
        tool_parser: Optional[ToolParserBase] = None,
        tool_executor: Optional[ToolExecutorBase] = None,
        results_adder: Optional[ResultsAdderBase] = None
    ) -> Union[Dict[str, Any], AsyncGenerator]:
        """Run a conversation thread with specified parameters.
        
        Args:
            thread_id: ID of the thread to run
            system_message: System message for the conversation
            model_name: Name of the LLM model to use
            temperature: Model temperature (0-1)
            max_tokens: Maximum tokens in response
            tool_choice: Tool selection strategy ("auto" or "none")
            temporary_message: Optional message to include temporarily
            native_tool_calling: Whether to use native LLM function calling
            xml_tool_calling: Whether to use XML-based tool calling
            execute_tools: Whether to execute tool calls
            stream: Whether to stream the response
            execute_tools_on_stream: Whether to execute tools during streaming
            parallel_tool_execution: Whether to execute tools in parallel
            tool_parser: Custom tool parser implementation
            tool_executor: Custom tool executor implementation
            results_adder: Custom results adder implementation
            
        Returns:
            Union[Dict[str, Any], AsyncGenerator]: Response or stream
            
        Raises:
            ValueError: If incompatible tool calling options are specified
            Exception: For other execution failures
            
        Notes:
            - Cannot use both native and XML tool calling simultaneously
            - Streaming responses include both content and tool results
        """
        # Validate tool calling configuration
        if native_tool_calling and xml_tool_calling:
            raise ValueError("Cannot use both native LLM tool calling and XML tool calling simultaneously")

        # Initialize tool components if any tool calling is enabled
        if native_tool_calling or xml_tool_calling:
            if tool_parser is None:
                tool_parser = XMLToolParser(tool_registry=self.tool_registry) if xml_tool_calling else StandardToolParser()
            
            if tool_executor is None:
                tool_executor = XMLToolExecutor(parallel=parallel_tool_execution, tool_registry=self.tool_registry) if xml_tool_calling else StandardToolExecutor(parallel=parallel_tool_execution)
            
            if results_adder is None:
                results_adder = XMLResultsAdder(self) if xml_tool_calling else StandardResultsAdder(self)

        try:
            messages = await self.get_messages(thread_id)
            prepared_messages = [system_message] + messages
            if temporary_message:
                prepared_messages.append(temporary_message)

            openapi_tool_schemas = None
            if native_tool_calling:
                openapi_tool_schemas = self.tool_registry.get_openapi_schemas()
                available_functions = self.tool_registry.get_available_functions()
            elif xml_tool_calling:
                available_functions = self.tool_registry.get_available_functions()
            else:
                available_functions = {}

            response_processor = LLMResponseProcessor(
                thread_id=thread_id,
                available_functions=available_functions,
                add_message_callback=self.add_message,
                update_message_callback=self._update_message,
                get_messages_callback=self.get_messages,
                parallel_tool_execution=parallel_tool_execution,
                tool_parser=tool_parser,
                tool_executor=tool_executor,
                results_adder=results_adder
            )

            llm_response = await self._run_thread_completion(
                messages=prepared_messages,
                model_name=model_name,
                temperature=temperature,
                max_tokens=max_tokens,
                tools=openapi_tool_schemas,
                tool_choice=tool_choice if native_tool_calling else None,
                stream=stream
            )

            if stream:
                return response_processor.process_stream(
                    response_stream=llm_response,
                    execute_tools=execute_tools,
                    execute_tools_on_stream=execute_tools_on_stream
                )

            await response_processor.process_response(
                response=llm_response,
                execute_tools=execute_tools
            )

            return llm_response

        except Exception as e:
            logging.error(f"Error in run_thread: {str(e)}")
            return {
                "status": "error",
                "message": str(e)
            }

    async def _run_thread_completion(
        self,
        messages: List[Dict[str, Any]],
        model_name: str,
        temperature: float,
        max_tokens: Optional[int],
        tools: Optional[List[Dict[str, Any]]],
        tool_choice: Optional[str],
        stream: bool
    ) -> Union[Any, AsyncGenerator]:
        """Get completion from LLM API."""
        return await make_llm_api_call(
            messages,
            model_name,
            temperature=temperature,
            max_tokens=max_tokens,
            tools=tools,
            tool_choice=tool_choice,
            stream=stream
        )

if __name__ == "__main__":
    import asyncio
    from agentpress.examples.example_agent.tools.files_tool import FilesTool

    async def main():
        # Initialize managers
        thread_manager = ThreadManager()
        
        # Register available tools
        thread_manager.add_tool(FilesTool)
        
        # Create a new thread
        thread_id = await thread_manager.create_thread()
        
        # Add a test message
        await thread_manager.add_message(thread_id, {
            "role": "user", 
            "content": "Please create 10x files – Each should be a chapter of a book about an Introduction to Robotics.."
        })

        # Define system message
        system_message = {
            "role": "system", 
            "content": "You are a helpful assistant that can create, read, update, and delete files."
        }

        # Test with streaming response and tool execution
        print("\n🤖 Testing streaming response with tools:")
        response = await thread_manager.run_thread(
            thread_id=thread_id,
            system_message=system_message,
            model_name="anthropic/claude-3-5-haiku-latest", 
            temperature=0.7,
            max_tokens=4096,
            stream=True,
            native_tool_calling=True,
            execute_tools=True,
            execute_tools_on_stream=True,
            parallel_tool_execution=True
        )

        # Handle streaming response
        if isinstance(response, AsyncGenerator):
            print("\nAssistant is responding:")
            content_buffer = ""
            try:
                async for chunk in response:
                    if hasattr(chunk.choices[0], 'delta'):
                        delta = chunk.choices[0].delta
                        
                        # Handle content streaming
                        if hasattr(delta, 'content') and delta.content is not None:
                            content_buffer += delta.content
                            if delta.content.endswith((' ', '\n')):
                                print(content_buffer, end='', flush=True)
                                content_buffer = ""
                        
                        # Handle tool calls
                        if hasattr(delta, 'tool_calls') and delta.tool_calls:
                            for tool_call in delta.tool_calls:
                                # Print tool name when it first appears
                                if tool_call.function and tool_call.function.name:
                                    print(f"\n🛠️  Tool Call: {tool_call.function.name}", flush=True)
                                
                                # Print arguments as they stream in
                                if tool_call.function and tool_call.function.arguments:
                                    print(f"   {tool_call.function.arguments}", end='', flush=True)
                
                # Print any remaining content
                if content_buffer:
                    print(content_buffer, flush=True)
                print("\n✨ Response completed\n")
                
            except Exception as e:
                print(f"\n❌ Error processing stream: {e}")
        else:
            print("\n✨ Response completed\n")

        # Display final thread state
        messages = await thread_manager.get_messages(thread_id)
        print("\n📝 Final Thread State:")
        for msg in messages:
            role = msg.get('role', 'unknown')
            content = msg.get('content', '')
            print(f"\n{role.upper()}: {content[:100]}...")

    asyncio.run(main())