from smolagents import CodeAgent, DuckDuckGoSearchTool, HfApiModel, load_tool, tool
import datetime
import requests
import pytz
import yaml
import os
from bs4 import BeautifulSoup
from tools.final_answer import FinalAnswerTool
from Gradio_UI import GradioUI

@tool
def get_current_time_in_timezone(timezone: str) -> str:
    """Fetches the current local time in a specified timezone.
    Args:
        timezone: A string representing a valid timezone (e.g., 'America/New_York').
    """
    try:
        tz = pytz.timezone(timezone)
        local_time = datetime.datetime.now(tz).strftime("%Y-%m-%d %H:%M:%S")
        return f"The current local time in {timezone} is: {local_time}"
    except Exception as e:
        return f"Error fetching time for timezone '{timezone}': {str(e)}"

@tool
def summarize_webpage(url: str) -> str:
    """Fetches a web page at `url`, extracts visible text, and returns a summary.
    Args:
        url: A webpage URL to summarize.
    """
    try:
        resp = requests.get(url, timeout=10)
        resp.raise_for_status()
    except Exception as e:
        return f"❌ Could not fetch {url}: {e}"

    soup = BeautifulSoup(resp.text, "html.parser")
    text_blocks = [p.get_text(" ", strip=True) for p in soup.find_all("p")]
    text = "\n\n".join(text_blocks)
    if not text:
        return "❌ No readable content found on the page."

    trimmed_text = text[:12000]

    hf_token = os.getenv("HF_TOKEN")
    if not hf_token:
        return "❌ Missing HF_TOKEN in environment."

    headers = {"Authorization": f"Bearer {hf_token}"}
    payload = {"inputs": trimmed_text}
    api_url = "https://api-inference.huggingface.co/models/facebook/bart-large-cnn"
    try:
        res = requests.post(api_url, headers=headers, json=payload, timeout=60)
        res.raise_for_status()
        return res.json()[0]["summary_text"].strip()
    except Exception as e:
        return f"❌ Failed to summarize page: {e}"


# Get current date.

TODAY = datetime.datetime.now().strftime("%B %d, %Y")  # e.g., "April 30, 2025"

# Instantiate tools and model
final_answer = FinalAnswerTool()
search_tool = DuckDuckGoSearchTool()

model = HfApiModel(
    max_tokens=2096,
    temperature=0.5,
    model_id='Qwen/Qwen2.5-Coder-32B-Instruct',
    custom_role_conversions=None,
)

# Load prebuilt image generation tool
image_generation_tool = load_tool("agents-course/text-to-image", trust_remote_code=True)

# Load prompt templates
with open("prompts.yaml", 'r') as stream:
    prompt_templates = yaml.safe_load(stream)
    prompt_templates["system_prompt"] = prompt_templates["system_prompt"].replace("{{TODAY}}", TODAY)

# Build the agent
agent = CodeAgent(
    model=model,
    tools=[
        final_answer,
        search_tool,
        summarize_webpage,
        image_generation_tool,
        get_current_time_in_timezone
    ],
    max_steps=6,
    verbosity_level=1,
    grammar=None,
    planning_interval=None,
    name=None,
    description=None,
    prompt_templates=prompt_templates
)

# Launch the UI
GradioUI(agent).launch()