# functions/agent.py

"""Agent definition for GAIA question answering system."""

import logging
from smolagents import CodeAgent, VisitWebpageTool
from functions.tools import (
    google_search,
    wikipedia_search,
    get_wikipedia_page,
    libretext_book_search,
    get_libretext_book,
)
from functions.agent_helper_functions import step_memory_cap, step_wait
from configuration import MODEL

logger = logging.getLogger(__name__)

def create_agent() -> CodeAgent:
    """Creates the GAIA agent using GPT‑4.1 or Mistral‑7B fallback."""
    agent = CodeAgent(
        model=MODEL,
        tools=[
            google_search,
            VisitWebpageTool(),
            wikipedia_search,
            get_wikipedia_page,
            libretext_book_search,
            get_libretext_book,
        ],
        add_base_tools=False,
        additional_authorized_imports=['bs4.*', 'json'],
        step_callbacks=[step_memory_cap, step_wait],
        name="GAIA_agent",
        verbosity_level=5,
        max_steps=20,
        planning_interval=5
    )
    logger.info("GAIA_agent created with dynamic LLM (OpenAI or HF fallback).")
    return agent