app.py

import gradio as gr
from typing import Dict, List, Set
import os
import logging
import inspect
from huggingface_hub import login
from smolagents import ToolCollection, CodeAgent, Tool, HfApiModel
from dotenv import load_dotenv

#local setup (load token when not on spaces)
# load_dotenv(verbose=True)
# login(token=os.getenv('HF_TOKEN'))

# Configure logging
logging.basicConfig(level=logging.INFO)
logging.warning('Starting application...')

# Global variables
publishtoken = None
tool_Collections: dict[str, ToolCollection] = {}
loaded_tools: Set[Tool] = set()

# API keys for litellm providers
litellm_api_keys = {
    'xai': '',
    'HF': '',
    'grok': '',
    'anthropic': '',
    'openAI': '',
}

def all_tools_names() -> List[str]:
    """Return a list of all tool names from loaded collections."""
    all_tools = []
    for collection in tool_Collections.values():
        if isinstance(collection, ToolCollection):
            all_tools.extend(tool.name for tool in collection.tools)
        else:
            all_tools.extend(collection)
    return all_tools

def filter_tools(tools):
    """Filter out base tools from a list of tools."""
    if tools is None:
        logging.warning("Received None for tools, defaulting to an empty list.")
        tools = []

    base_tools_names = ['web search']
    return [tool for tool in tools if tool not in base_tools_names]

def load_collection_from_space(agent: CodeAgent, collection_slug: str) -> List[str]:
    """Load a collection of tools from a Hugging Face space."""
    if collection_slug not in tool_Collections:
        tool_collection = ToolCollection(
            collection_slug=collection_slug,
            trust_remote_code=True
        )

        tool_Collections[collection_slug] = [tool.name for tool in tool_collection.tools]

        for tool in tool_collection.tools:
            if agent.tools.get(tool.name) is None:
                agent.tools[tool.name] = tool
                loaded_tools.add(tool)
            else:
                agent.tools[tool.name] = tool

    return all_tools_names()

def createAgent() -> CodeAgent:
    """Create and return a CodeAgent instance."""
    agent = CodeAgent(
        tools=filter_tools(list(loaded_tools)),
        model=HfApiModel(),
        additional_authorized_imports=["smolagents", "subprocess", "typing", "os", "inspect", "open", "requests"],
        add_base_tools=True,
        planning_interval=None,
    )

    # Add base tools to the collection
    for tool in agent.tools:
        if tool not in loaded_tools:
            if "base tools" not in tool_Collections:
                tool_Collections["base tools"] = []
            tool_Collections["base tools"].append(tool)

    return agent

# Initialize the agent
agent = createAgent()

def dropdown_update_choices(choices):
    return gr.update(choices=choices, value=None)

def process_logs(agent):
    logs = ""
    if hasattr(agent, 'logs'):
        for entry in agent.logs:
            if hasattr(entry, 'llm_output'):
                logs += str(entry.llm_output) + "\n"
        return logs
    return "No logs available."

def get_tools():
    return [{"name": tool.name, "description": tool.description} for tool in agent.tools.values()]

def get_functions():
    return agent.python_executor.custom_tools

def get_function_code(selected_function_name):
    func = get_functions().get(selected_function_name)
    if func:
        try:
            return inspect.getsource(func)
        except OSError:
            return "Source code not available."
    return "Function not found."

def get_tool_description(selected_tool_name):
    
    tools = get_tools()
    print("Selected tool name:", selected_tool_name)
    print("Tools:",tools )
    for tool in tools:
        if tool["name"] == selected_tool_name:
            return tool["description"]
    return "No description available."

def refresh_ui_elements():
    print("Refreshing UI elements...")
    updated_tools = get_tools()
    updated_functions = get_functions()

    tool_names = [tool["name"] for tool in updated_tools]
    print("Tool names:", tool_names)
    function_names = list(updated_functions.keys())

    current_tool = tool_names[0] if tool_names else None
    current_function = function_names[0] if function_names else None

    tool_description = get_tool_description(current_tool)
    function_code = get_function_code(current_function) if current_function else ""

    tool_dropdown_update = dropdown_update_choices(tool_names)
    function_dropdown_update = dropdown_update_choices(function_names)

    return tool_dropdown_update, function_dropdown_update, tool_description, function_code

def update_agent(collection_slug: str):
    load_collection_from_space(agent, collection_slug=collection_slug)
    return refresh_ui_elements()

def respond(message, console_output, chat_history):
    try:
        bot_message = agent.run(message)
        new_console_output = process_logs(agent)

        chat_history.extend([
            {"role": "user", "content": message},
            {"role": "assistant", "content": bot_message}
        ])

        updated_console = console_output + f"\nQuery: {message}\nLogs: {new_console_output}"
        ui_updates = refresh_ui_elements()

        return "", updated_console, chat_history, *ui_updates
    except Exception as e:
        logging.error(f"Error in respond function: {e}")
        return f"An error occurred: {str(e)}", console_output, chat_history, None, None, None, None

with gr.Blocks() as demo:
    with gr.Row():
        with gr.Column():
            with gr.Tab("Chat"):
                gr.Markdown("<center><h1>smolAgent Chat</h1></center>")
                chatbot = gr.Chatbot(type="messages")
                msg = gr.Textbox()
                clear = gr.ClearButton([msg, chatbot])

            with gr.Tab("Console"):
                outputbox = gr.Textbox(lines=25, scale=1, interactive=False)

            with gr.Tab("Config"):
                gr.Markdown("## Configure litellm API Keys")
                api_key_inputs = {
                    provider: gr.Textbox(
                        label=f'{provider} API Key',
                        placeholder='Enter key',
                        type='password',
                        value=litellm_api_keys[provider]
                    ) for provider in litellm_api_keys
                }

        with gr.Column():
            gr.Markdown("<center><h1>Tool Collection</h1></center>")
            tools = get_tools()

            tool_dropdown = gr.Dropdown(
                show_label=False,
                choices=[tool["name"] for tool in tools],
                value=tools[0]["name"] if tools else None,
                type="value",
                allow_custom_value=False,
                scale=3
            )

            description_textbox = gr.Textbox(
                label="Tool Description",
                value=get_tool_description(tool_dropdown.value),
                interactive=False,
            )

            slug = gr.Textbox(label="Collection Slug", value="Mightypeacock/agent-tools-6777c9699c231b7a1e87fa31")
            greet_btn = gr.Button("Load")


            gr.Markdown("<center><h2>Functions</h2></center>")
            functions = get_functions()
            function_dropdown = gr.Dropdown(
                label="Select Function",
                choices=list(functions.keys()),
                value=None if not functions.keys() else list(functions.keys())[0],
                type="value",
            )

            code = gr.Code(label="Function Code", language="python")

            tool_dropdown.change(
                fn=get_tool_description,
                inputs=[tool_dropdown],
                outputs=description_textbox,
            )

            function_dropdown.change(
                fn=get_function_code,
                inputs=function_dropdown,
                outputs=code,
            )
            greet_btn.click(
                fn=update_agent,
                inputs=slug,
                outputs=[tool_dropdown, function_dropdown, description_textbox, code],
                api_name="load_HF_Collection"
            )

    msg.submit(
        respond,
        inputs=[msg, outputbox, chatbot],
        outputs=[msg, outputbox, chatbot, tool_dropdown, function_dropdown, description_textbox, code]
    )

if __name__ == "__main__":
    demo.launch(show_error=True, debug=True)