app.py

import os
import gradio as gr
import requests
import inspect
import pandas as pd
import asyncio
import aiohttp
import time
import random
import json
import boto3
from smolagents import FinalAnswerTool, Tool, tool, OpenAIServerModel, DuckDuckGoSearchTool, CodeAgent, VisitWebpageTool
from nova_agent import NovaProAgent

from dotenv import load_dotenv

load_dotenv()
# (Keep Constants as is)
# --- Constants ---
DEFAULT_API_URL = "https://agents-course-unit4-scoring.hf.space"


OPENAI_TOKEN = os.getenv("OPENAI_API_KEY")

# --- Custom Tools ---
class KnowledgeBaseTool(Tool):
    name = "knowledge_base"
    description = "Access structured knowledge for common topics"
    inputs = {"topic": {"type": "string", "description": "The topic to look up"}}
    output_type = "string"
    
    def __init__(self):
        super().__init__()
        self.is_initialized = True
        # Common knowledge base
        self.knowledge = {
            "olympics": "Olympic Games data: Countries, athletes, years, sports",
            "countries": "Country codes: ISO, IOC, FIFA codes and country information",
            "sports": "Sports history, rules, famous athletes and events",
            "science": "Scientific facts, formulas, discoveries, and researchers",
            "history": "Historical events, dates, people, and places",
            "geography": "Countries, capitals, populations, and geographical features"
        }
    
    def forward(self, topic: str) -> str:
        topic_lower = topic.lower()
        for key, info in self.knowledge.items():
            if key in topic_lower:
                return f"Knowledge base: {info}. Use this context to answer questions about {topic}."
        return f"No specific knowledge base entry for '{topic}'. Use general reasoning."

class WikipediaSearchTool(Tool):
    name = "wikipedia_search"
    description = "Search Wikipedia for information"
    inputs = {"query": {"type": "string", "description": "The search query for Wikipedia"}}
    output_type = "string"
    
    def __init__(self):
        super().__init__()
        self.is_initialized = True
        
    def forward(self, query: str) -> str:
        """Search Wikipedia with simple fallback."""
        try:
            import requests
            wiki_url = "https://en.wikipedia.org/api/rest_v1/page/summary/" + query.replace(" ", "_")
            response = requests.get(wiki_url, timeout=2)
            if response.status_code == 200:
                data = response.json()
                if 'extract' in data and data['extract']:
                    return f"Wikipedia: {data['extract'][:500]}"  # Limit length
        except Exception as e:
            print(f"Wikipedia search failed: {e}")
        
        return f"Wikipedia search unavailable for '{query}'. Use your knowledge to answer."

# --- Basic Agent Definition ---
# ----- THIS IS WERE YOU CAN BUILD WHAT YOU WANT ------
class SlpMultiAgent:
    def __init__(self):
        print("BasicAgent initialized.")
        
    async def __call__(self, question: str) -> str:
        print(f"Agent received question (first 50 chars): {question}...")
        fixed_answer = "This is a default answer."
        print(f"Agent returning fixed answer: {fixed_answer}")
        
        # Truncate question to avoid exceeding model context length
        MAX_QUESTION_LENGTH = 1000
        short_question = question  # [:MAX_QUESTION_LENGTH]
        
        # Use cheaper, faster model
        model = OpenAIServerModel(
            model_id="gpt-3.5-turbo", 
            temperature=0.0,  # Deterministic for consistency
            max_tokens=400    # Reduced tokens for cost efficiency
        )
        
        # Create only essential agents with reduced complexity
        research_agent = CodeAgent(
            tools=[KnowledgeBaseTool()],  # Remove Wikipedia to avoid timeouts
            model=model,
            additional_authorized_imports=["re", "datetime"],
            max_steps=2,  # Reduced steps for cost
            name="ResearchAgent",
            verbosity_level=0,
            description="Quick factual research and knowledge lookup."
        )
        
        solver_agent = CodeAgent(
            tools=[],
            model=model,
            additional_authorized_imports=["math", "re", "collections", "itertools"],
            max_steps=2,  # Reduced steps
            name="SolverAgent",
            verbosity_level=0,
            description="Problem solving, calculations, and logical reasoning."
        )

        manager_agent = CodeAgent(
            model=OpenAIServerModel(
                model_id="gpt-3.5-turbo",
                temperature=0.0,
                max_tokens=500
            ),
            tools=[KnowledgeBaseTool()],  # Remove Wikipedia to avoid timeouts
            managed_agents=[research_agent, solver_agent],  # Only 2 agents
            name="ManagerAgent",
            description="Efficient manager for quick problem solving.",
            additional_authorized_imports=["re", "math"],
            planning_interval=1,  # Faster planning
            verbosity_level=0,  # Reduce verbosity
            max_steps=3,  # Further reduced steps to avoid timeouts
            final_answer_checks=[check_reasoning]
        )
        
        # Create a task for the agent run with retry mechanism for rate limits
        max_retries = 3
        result = None
        
        for attempt in range(max_retries):
            try:
                loop = asyncio.get_event_loop()
                result = await loop.run_in_executor(
                    None,
                    lambda: manager_agent.run(f"""
                    Question: {short_question}
                    
                    You have knowledge_base() tool and two agents:
                    - ResearchAgent: For factual questions
                    - SolverAgent: For calculations and logic
                    
                    IMPORTANT: Always end with exactly this format:
                    <code>
                    final_answer("your direct answer")
                    </code>
                    
                    Be concise and direct.
                    """)
                )
                break  # Success, exit retry loop
            except Exception as e:
                print(f"Attempt {attempt+1}/{max_retries} failed: {e}")
                if "rate limit" in str(e).lower() and attempt < max_retries - 1:
                    # Add jitter to avoid synchronized retries
                    wait_time = (attempt + 1) * 10 + random.uniform(0, 5)  
                    print(f"Rate limit hit. Waiting {wait_time:.2f} seconds before retry...")
                    await asyncio.sleep(wait_time)
                elif attempt < max_retries - 1:
                    await asyncio.sleep(5)  # Wait before general retry
                else:
                    print(f"All attempts failed. Returning default answer.")
                    return "I apologize, but I'm currently experiencing technical difficulties. Please try again later."
        
        # If we couldn't get a result after all retries
        if result is None:
            return "I apologize, but I'm currently experiencing technical difficulties. Please try again later."
        
        
        # Extract clean answer from result
        if result and isinstance(result, str):
            # Look for final_answer pattern
            import re
            final_answer_match = re.search(r'final_answer\(["\']([^"\']*)["\'\)]', result)  # Fixed regex
            if final_answer_match:
                clean_answer = final_answer_match.group(1)
                return clean_answer
            
            # If no final_answer found, try to extract the last meaningful line
            lines = result.strip().split('\n')
            for line in reversed(lines):
                line = line.strip()
                if line and not line.startswith('#') and not line.startswith('###') and len(line) < 200:
                    return line
        
        # Return the result from the agent
        return result if result else "Unable to determine answer."
    
def check_reasoning(final_answer, agent_memory):
    # Skip expensive validation to save costs
    return True


async def run_and_submit_all(profile):
    """
    Fetches all questions, runs the BasicAgent on them, submits all answers,
    and displays the results asynchronously.
    """
    # --- Determine HF Space Runtime URL and Repo URL ---
    space_id = os.getenv("SPACE_ID") # Get the SPACE_ID for sending link to the code

    # Handle different profile types
    if profile:
        if hasattr(profile, 'username'):
            # It's an OAuthProfile object
            username = profile.username
        else:
            # It's a string or other type
            username = str(profile)
        print(f"User logged in: {username}")
    else:
        print("User not logged in.")
        return "Please Login to Hugging Face with the button.", None

    api_url = DEFAULT_API_URL
    questions_url = f"{api_url}/questions"
    submit_url = f"{api_url}/submit"

    # 1. Instantiate Agent ( modify this part to create your agent)
    try:
        agent = NovaProAgent()
    except Exception as e:
        print(f"Error instantiating agent: {e}")
        return f"Error initializing agent: {e}", None
    # In the case of an app running as a hugging Face space, this link points toward your codebase ( usefull for others so please keep it public)
    agent_code = f"https://huggingface.co/spaces/{space_id}/tree/main"
    print(agent_code)

    # 2. Fetch Questions
    print(f"Fetching questions from: {questions_url}")
    try:
        async with aiohttp.ClientSession() as session:
            async with session.get(questions_url, timeout=15) as response:
                response.raise_for_status()
                questions_data = await response.json()
                if not questions_data:
                    print("Fetched questions list is empty.")
                    return "Fetched questions list is empty or invalid format.", None
                print(f"Fetched {len(questions_data)} questions.")
    except aiohttp.ClientError as e:
        print(f"Error fetching questions: {e}")
        return f"Error fetching questions: {e}", None
    except ValueError as e:  # JSON decode error
        print(f"Error decoding JSON response from questions endpoint: {e}")
        return f"Error decoding server response for questions: {e}", None
    except Exception as e:
        print(f"An unexpected error occurred fetching questions: {e}")
        return f"An unexpected error occurred fetching questions: {e}", None

    # 3. Run your Agent
    results_log = []
    answers_payload = []
    print(f"Running agent on {len(questions_data)} questions...")
    
    # Process questions one at a time to avoid rate limits
    semaphore = asyncio.Semaphore(1)  # Process 1 question at a time
    
    async def process_question(item):
        task_id = item.get("task_id")
        question_text = item.get("question")
        if not task_id or question_text is None:
            print(f"Skipping item with missing task_id or question: {item}")
            return None
        
        async with semaphore:
            max_retries = 3
            for attempt in range(max_retries):
                try:
                    print(f"Processing task {task_id}, attempt {attempt+1}/{max_retries}")
                    submitted_answer = await agent(question_text)
                    return {"task_id": task_id, "submitted_answer": submitted_answer, 
                            "log": {"Task ID": task_id, "Question": question_text, "Submitted Answer": submitted_answer}}
                except Exception as e:
                    print(f"Error running agent on task {task_id}, attempt {attempt+1}: {e}")
                    if "rate limit" in str(e).lower() and attempt < max_retries - 1:
                        # Exponential backoff with jitter
                        wait_time = (2 ** attempt) * 5 + random.uniform(0, 3)
                        print(f"Rate limit hit. Waiting {wait_time:.2f} seconds before retry...")
                        await asyncio.sleep(wait_time)
                    elif attempt < max_retries - 1:
                        await asyncio.sleep(5)  # Reduced wait time
                    else:
                        # All retries failed, return default answer
                        default_answer = "This is a default answer."
                        return {"task_id": task_id, "submitted_answer": default_answer, 
                                "log": {"Task ID": task_id, "Question": question_text, "Submitted Answer": default_answer}}
    
    # Create tasks for all questions
    tasks = [process_question(item) for item in questions_data]
    results = await asyncio.gather(*tasks)
    
    # Process results
    for result in results:
        if result is not None:
            answers_payload.append({"task_id": result["task_id"], "submitted_answer": result["submitted_answer"]})
            results_log.append(result["log"])

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

    # 4. Prepare Submission 
    submission_data = {"username": str(username).strip(), "agent_code": agent_code, "answers": answers_payload}
    status_update = f"Agent finished. Submitting {len(answers_payload)} answers for user '{username}'..."
    print(status_update)

    # 5. Submit
    print(f"Submitting {len(answers_payload)} answers to: {submit_url}")
    try:
        async with aiohttp.ClientSession() as session:
            async with session.post(submit_url, json=submission_data, timeout=60) as response:
                response.raise_for_status()
                result_data = await 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.')}"
                )
                print("Submission successful.")
                results_df = pd.DataFrame(results_log)
                return final_status, results_df
    except aiohttp.ClientResponseError as e:
        error_detail = f"Server responded with status {e.status}."
        try:
            error_text = await e.response.text()
            try:
                error_json = await e.response.json()
                error_detail += f" Detail: {error_json.get('detail', error_text)}"
            except ValueError:
                error_detail += f" Response: {error_text[:500]}"
        except:
            pass
        status_message = f"Submission Failed: {error_detail}"
        print(status_message)
        results_df = pd.DataFrame(results_log)
        return status_message, results_df
    except asyncio.TimeoutError:
        status_message = "Submission Failed: The request timed out."
        print(status_message)
        results_df = pd.DataFrame(results_log)
        return status_message, results_df
    except aiohttp.ClientError as e:
        status_message = f"Submission Failed: Network error - {e}"
        print(status_message)
        results_df = pd.DataFrame(results_log)
        return status_message, results_df
    except Exception as e:
        status_message = f"An unexpected error occurred during submission: {e}"
        print(status_message)
        results_df = pd.DataFrame(results_log)
        return status_message, results_df


# --- Build Gradio Interface using Blocks ---
with gr.Blocks() as demo:
    gr.Markdown("# Basic Agent Evaluation Runner")
    gr.Markdown(
        """
        **Instructions:**
        1.  Please clone this space, then modify the code to define your agent's logic, the tools, the necessary packages, etc ...
        2.  Log in to your Hugging Face account using the button below. This uses your HF username for submission.
        3.  Click 'Run Evaluation & Submit All Answers' to fetch questions, run your agent, submit answers, and see the score.
        ---
        **Disclaimers:**
        Once clicking on the "submit button, it can take quite some time ( this is the time for the agent to go through all the questions).
        This space provides a basic setup and is intentionally sub-optimal to encourage you to develop your own, more robust solution. For instance for the delay process of the submit button, a solution could be to cache the answers and submit in a seperate action or even to answer the questions in async.
        """
    )

    login_button = gr.LoginButton()

    run_button = gr.Button("Run Evaluation & Submit All Answers")

    status_output = gr.Textbox(label="Run Status / Submission Result", lines=5, interactive=False)
    # Removed max_rows=10 from DataFrame constructor
    results_table = gr.DataFrame(label="Questions and Agent Answers", wrap=True)
    
    def sync_wrapper(profile):
        # This wrapper ensures we have access to the profile
        if not profile:
            print("No profile available in sync_wrapper")
            return "Please Login to Hugging Face with the button.", None
        print(f"Profile type in wrapper: {type(profile)}")
        try:
            return asyncio.run(run_and_submit_all(profile))
        except Exception as e:
            print(f"Error in sync_wrapper: {e}")
            return f"Error processing request: {e}", None
    
    run_button.click(
        fn=sync_wrapper,
        inputs=login_button,
        outputs=[status_output, results_table]
    )

if __name__ == "__main__":
    print("\n" + "-"*30 + " App Starting " + "-"*30)
    # Check for SPACE_HOST and SPACE_ID at startup for information
    space_host_startup = os.getenv("SPACE_HOST")
    space_id_startup = os.getenv("SPACE_ID") # Get SPACE_ID at startup

    if space_host_startup:
        print(f"✅ SPACE_HOST found: {space_host_startup}")
        print(f"   Runtime URL should be: https://{space_host_startup}.hf.space")
    else:
        print("ℹ️  SPACE_HOST environment variable not found (running locally?).")

    if space_id_startup: # Print repo URLs if SPACE_ID is found
        print(f"✅ SPACE_ID found: {space_id_startup}")
        print(f"   Repo URL: https://huggingface.co/spaces/{space_id_startup}")
        print(f"   Repo Tree URL: https://huggingface.co/spaces/{space_id_startup}/tree/main")
    else:
        print("ℹ️  SPACE_ID environment variable not found (running locally?). Repo URL cannot be determined.")

    print("-"*(60 + len(" App Starting ")) + "\n")

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