import os

import requests
import yaml
from langchain.agents import (
    create_json_agent
)
from langchain.agents.agent_toolkits import JsonToolkit
from langchain.chat_models import ChatOpenAI
from langchain.tools.json.tool import JsonSpec

llm = ChatOpenAI(model_name="gpt-4", temperature=0.1)
agent = None

"""Call the url and use json response to create a yaml file"""
def index_url(url):
    global agent
    response = requests.get(url)
    json_response = response.json()

    # create yaml from json response
    yaml_string = yaml.dump(json_response)

    data = yaml.load(yaml_string, Loader=yaml.FullLoader)
    json_spec = JsonSpec(dict_=data, max_value_length=4000)
    json_toolkit = JsonToolkit(spec=json_spec)
    agent = create_json_agent(
        llm=llm,
        toolkit=json_toolkit,
        verbose=True
    )
    return data

"""Use the agent to call method run using the text as input"""
def chat(question):
    global agent
    if agent is not None:
        response = agent.run(question)
    else:
        response = "Please add a request url first"
    return response