import os
import gradio as gr
import requests
import pandas as pd
from huggingface_hub import login
import re

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

# --- Basic Agent Definition ---
class BasicAgent:
    def __init__(self):
        print("BasicAgent initialized.")
        self.agent_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."""
        )

    def maybe_reversed(self, text: str) -> bool:
        words = text.split()
        reversed_ratio = sum(
            1 for word in words if word[::-1].lower() in {
                "if", "you", "understand", "this", "sentence", "write",
                "opposite", "of", "the", "word", "left", "answer"
            }
        ) / len(words)
        return reversed_ratio > 0.3

    def solve_riddle(self, question: str) -> str:
        question = question[::-1]  # properly reverse before parsing
        if "opposite of the word" in question:
            match = re.search(r"opposite of the word ['\"](\w+)['\"]", question)
            if match:
                word = match.group(1).lower()
                opposites = {
                    "left": "right", "up": "down", "hot": "cold",
                    "true": "false", "yes": "no", "black": "white"
                }
                opposite = opposites.get(word, f"UNKNOWN_OPPOSITE_OF_{word}")
                final_answer_clean = opposite.strip().replace("\n", " ").replace("\r", "")
            return f"FINAL ANSWER: {final_answer_clean}"
        return "FINAL ANSWER: COULD_NOT_SOLVE"

    def __call__(self, question: str) -> str:
        print(f"Received question: {question[:50]}...")
        if self.maybe_reversed(question):
            print("Detected likely reversed riddle.")
            return self.solve_riddle(question)
        return "FINAL ANSWER: NOT_A_RIDDLE"


def run_and_submit_all(profile: gr.OAuthProfile | None):
    space_id = os.getenv("SPACE_ID")

    if profile:
        username = f"{profile.username}"
        print("User logged in.")
    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"

    try:
        agent = BasicAgent()
    except Exception as e:
        print(f"Error instantiating agent: {e}")
        return f"Error initializing agent: {e}", None

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

    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 requests.exceptions.RequestException 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:
            submitted_answer = agent(question_text)
            answers_payload.append({"task_id": task_id, "submitted_answer": submitted_answer})
            results_log.append({"Task ID": task_id, "Question": question_text, "Submitted Answer": submitted_answer})
        except Exception as e:
            results_log.append({"Task ID": task_id, "Question": question_text, "Submitted Answer": f"AGENT ERROR: {e}"})

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

    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.')}"
        )
        return final_status, pd.DataFrame(results_log)
    except Exception as e:
        return f"Submission Failed: {e}", pd.DataFrame(results_log)


# --- Build Gradio Interface ---
with gr.Blocks() as demo:
    gr.Markdown("# Basic Agent Evaluation Runner")
    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=False)

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

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