import os
import gradio as gr
import requests
import inspect
import pandas as pd
import asyncio
from smolagents import ToolCallingAgent, InferenceClientModel, HfApiModel
from smolagents import DuckDuckGoSearchTool, Tool, CodeAgent
from huggingface_hub import login

DEFAULT_API_URL = "https://agents-course-unit4-scoring.hf.space"

login(token=os.environ["HUGGINGFACEHUB_API_TOKEN"])

search_tool = DuckDuckGoSearchTool()

async def run_and_submit_all(profile: gr.OAuthProfile | None):
    try:
        agent = CodeAgent(
            tools=[search_tool],
            model=InferenceClientModel(model="mistralai/Magistral-Small-2506"),
            max_steps=5,
            verbosity_level=2        
        )
    except Exception as e:
        return f"Error initializing agent: {e}", None

    space_id = os.getenv("SPACE_ID")
    agent_code = f"https://huggingface.co/spaces/{space_id}/tree/main"

    questions_url = f"{DEFAULT_API_URL}/questions"
    try:
        response = requests.get(questions_url, timeout=15)
        response.raise_for_status()
        questions_data = response.json()
        if not questions_data:
            return "Fetched questions list is empty or invalid format.", None
    except Exception as e:
        return f"Error fetching questions: {e}", None

    results_log = []
    answers_payload = []
    for item in questions_data:
        task_id = item.get("task_id")
        question_text = item.get("question")
        if not task_id or question_text is None:
            continue
    try:
    # Construct full prompt with required system instructions
    system_prompt = (
        "You are a general AI assistant. I will ask you a question. "
        "Report your thoughts, and finish your answer with the following template: "
        "FINAL ANSWER: [YOUR FINAL ANSWER]. YOUR FINAL ANSWER should be a number OR as few words as possible OR a comma separated list of numbers and/or strings. "
        "If you are asked for a number, don't use comma to write your number neither use units such as $ or percent sign unless specified otherwise. "
        "If you are asked for a string, don't use articles, neither abbreviations (e.g. for cities), and write the digits in plain text unless specified otherwise. "
        "If you are asked for a comma separated list, apply the above rules depending of whether the element to be put in the list is a number or a string.\n\n"
    )
    full_prompt = system_prompt + f"Question: {question_text.strip()}"

    # Run agent with full prompt
    loop = asyncio.get_event_loop()
    agent_response = await loop.run_in_executor(None, agent, full_prompt)

    # Extract FINAL ANSWER and reasoning
    if "FINAL ANSWER:" in agent_response:
        reasoning_trace, final_answer = agent_response.rsplit("FINAL ANSWER:", 1)
        final_answer = final_answer.strip()
        reasoning_trace = reasoning_trace.strip()
    else:
        final_answer = agent_response.strip()
        reasoning_trace = "Model did not follow format; full response returned."

    answers_payload.append({
        "task_id": task_id,
        "model_answer": final_answer,
        "reasoning_trace": reasoning_trace
    })

    results_log.append({
        "Task ID": task_id,
        "Question": question_text,
        "Submitted Answer": final_answer,
        "Reasoning Trace": reasoning_trace
    })

    except Exception as e:
        print(f"Error running agent on task {task_id}: {e}")
        results_log.append({
            "Task ID": task_id,
            "Question": question_text,
            "Submitted Answer": f"AGENT ERROR: {e}",
            "Reasoning Trace": "N/A"
        })

    if not answers_payload:
        return "Agent did not produce any answers to submit.", pd.DataFrame(results_log)

    username = profile.username if profile else "unknown"
    submit_url = f"{DEFAULT_API_URL}/submit"
    submission_data = {"username": username.strip(), "agent_code": agent_code, "answers": answers_payload}
    try:
        response = requests.post(submit_url, json=submission_data, timeout=60)
        response.raise_for_status()
        result_data = response.json()
        final_status = (
            f"Submission Successful!\n"
            f"User: {result_data.get('username')}\n"
            f"Overall Score: {result_data.get('score', 'N/A')}% "
            f"({result_data.get('correct_count', '?')}/{result_data.get('total_attempted', '?')} correct)\n"
            f"Message: {result_data.get('message', 'No message received.')}"
        )
        results_df = pd.DataFrame(results_log)
        return final_status, results_df
    except Exception as e:
        status_message = f"Submission Failed: {e}"
        results_df = pd.DataFrame(results_log)
        return status_message, results_df

with gr.Blocks() as demo:
    gr.Markdown("# Basic Agent Evaluation Runner")
    gr.Markdown("""
    **Instructions:**
    1. Clone this space and define your agent logic.
    2. Log in to your Hugging Face account.
    3. Click 'Run Evaluation & Submit All Answers'.
    ---
    **Note:**
    The run may take time. Async is now used to improve responsiveness.
    """)

    gr.LoginButton()

    run_button = gr.Button("Run Evaluation & Submit All Answers")
    status_output = gr.Textbox(label="Run Status / Submission Result", lines=5, interactive=False)
    results_table = gr.DataFrame(label="Questions and Agent Answers", wrap=True)

    run_button.click(fn=run_and_submit_all, outputs=[status_output, results_table])

if __name__ == "__main__":
    print("\n" + "-"*30 + " App Starting " + "-"*30)
    space_host_startup = os.getenv("SPACE_HOST")
    space_id_startup = os.getenv("SPACE_ID")

    if space_host_startup:
        print(f"✅ SPACE_HOST: https://{space_host_startup}.hf.space")
    if space_id_startup:
        print(f"✅ SPACE_ID: https://huggingface.co/spaces/{space_id_startup}")

    print("Launching Gradio Interface...")
    demo.launch(debug=True, share=False)