from smolagents import CodeAgent,DuckDuckGoSearchTool, HfApiModel,load_tool,tool
import datetime
import requests
import pytz
import yaml
import io
import base64
import schemdraw
from schemdraw import flow
from tools.final_answer import FinalAnswerTool
from Gradio_UI import GradioUI

@tool
def text_to_flowchart(steps_text: str) -> str:
    """
    Generates a flowchart diagram from pre-processed text that lists sequential process steps.
    The input should be a text with each step on a new line (optionally prefixed by bullet markers).

    Args:
        steps_text: A string containing the process steps.

    Returns:
        A data URL for a PNG image of the generated flowchart.
    """
    # Parse steps from the input text
    parsed_steps = []
    for line in steps_text.splitlines():
        line = line.strip()
        if line.startswith(("-", "*", "•")):
            line = line[1:].strip()
        elif line and line[0].isdigit():
            dot_index = line.find('.')
            if dot_index != -1:
                line = line[dot_index+1:].strip()
        if line:
            parsed_steps.append(line)
    if not parsed_steps:
        parsed_steps = ["No steps provided."]
    
    # Create the flowchart using SchemDraw's flow module
    d = schemdraw.Drawing(unit=0.5, fontsize=10)
    d += flow.Terminal().label("Start")
    for step in parsed_steps:
        d += flow.Arrow()
        d += flow.Process().label(step)
    d += flow.Arrow()
    d += flow.Terminal().label("End")
    
    # Render diagram to PNG and encode as a data URL
    buf = io.BytesIO()
    d.draw()
    d.fig.savefig(buf, format='png', bbox_inches='tight')
    buf.seek(0)
    encoded_image = base64.b64encode(buf.getvalue()).decode('utf-8')
    data_url = f"data:image/png;base64,{encoded_image}"
    
    return data_url


@tool
def get_current_time_in_timezone(timezone: str) -> str:
    """A tool that fetches the current local time in a specified timezone.
    Args:
        timezone: A string representing a valid timezone (e.g., 'America/New_York').
    """
    try:
        # Create timezone object
        tz = pytz.timezone(timezone)
        # Get current time in that 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)}"


final_answer = FinalAnswerTool()

# If the agent does not answer, the model is overloaded, please use another model or the following Hugging Face Endpoint that also contains qwen2.5 coder:
# model_id='https://pflgm2locj2t89co.us-east-1.aws.endpoints.huggingface.cloud' 

model = HfApiModel(
max_tokens=2096,
temperature=0.5,
model_id='Qwen/Qwen2.5-Coder-32B-Instruct',# it is possible that this model may be overloaded
custom_role_conversions=None,
)


# Import tool from Hub
image_generation_tool = load_tool("agents-course/text-to-image", trust_remote_code=True)

with open("prompts.yaml", 'r') as stream:
    prompt_templates = yaml.safe_load(stream)
    
agent = CodeAgent(
    model=model,
    tools=[final_answer], ## add your tools here (don't remove final answer)
    max_steps=6,
    verbosity_level=1,
    grammar=None,
    planning_interval=None,
    name=None,
    description=None,
    prompt_templates=prompt_templates
)


GradioUI(agent).launch()