from typing import List
from typing import Dict
import plotly.io as pio
import pandas as pd
from utils import TEMP_DIR
import os
import ast
from dotenv import load_dotenv

load_dotenv()

root_url = os.getenv("ROOT_URL")

def chart_generation_func(data: List[dict], session_hash: str, layout: Dict[str,str]={}):
    print("CHART GENERATION")
    print(data)
    print(layout)
    try:
        dir_path = TEMP_DIR / str(session_hash)
        chart_path = f'{dir_path}/chart.html'

        #Processing data to account for variation from LLM
        data_list = []
        layout_dict = {}        
        if isinstance(data, list):
            data_list = data
        else:
            data_list.append(data)

        if isinstance(data[0], str): 
           data_list[0] = ast.literal_eval(data_list[0])

        if isinstance(layout, list):
           layout_obj = layout[0]
        else:
           layout_obj = layout

        if isinstance(layout_obj, str):
           layout_dict = ast.literal_eval(layout_obj)
        else:
           layout_dict = layout_obj
           

        fig = dict({"data": data_list,
                    "layout": layout_dict})
        pio.write_html(fig, chart_path, full_html=False)

        chart_url = f'{root_url}/gradio_api/file/temp/{session_hash}/chart.html'

        iframe = '<div style=overflow:auto;><iframe\n    scrolling="yes"\n    width="1000px"\n    height="500px"\n    src="' + chart_url + '"\n    frameborder="0"\n    allowfullscreen\n></iframe>\n</div>'

        return {"reply": iframe}
    
    except Exception as e:
      print("CHART ERROR")
      reply = f"""There was an error generating the Plotly Chart from {data} and {layout}
              The error is {e},
              You should probably try again.
              """
      return {"reply": reply}

def table_generation_func(data: List[dict], session_hash):
    print("TABLE GENERATION")
    print(data)
    try: 
        dir_path = TEMP_DIR / str(session_hash)
        csv_path = f'{dir_path}/data.csv'

        #Processing data to account for variation from LLM
        if isinstance(data, list):
           data_obj = data[0]
        else:
           data_obj = data

        if isinstance(data_obj, str):
           data_dict = ast.literal_eval(data_obj)
        else:
           data_dict = data_obj        

        df = pd.DataFrame.from_dict(data_dict)
        print(df)
        df.to_csv(csv_path)

        download_path = f'{root_url}/gradio_api/file/temp/{session_hash}/data.csv'
        html_table = df.to_html() + f'<p>Download as a <a href="{download_path}">CSV file</a></p>'
        print(html_table)

        return {"reply": html_table}
    
    except Exception as e:
      print("TABLE ERROR")
      reply = f"""There was an error generating the Pandas DataFrame table from {data}
              The error is {e},
              You should probably try again.
              """
      return {"reply": reply}