"""
    GPT Related Functions
"""

from typing import List, Dict, Generator

import cohere
from utils.format import format_chat_history_cohere


def test_api_key(api_key: str):
    """Function to test Cohere API is working"""
    try:
        # try to just generate 3 tokens
        co = cohere.Client(
            api_key=api_key,
        )
        response = co.generate(prompt="sample prompt", max_tokens=3)
        return True
    except:
        return False


def stream(
    background_info: str, chat_history: List[Dict[str, str]] = [], api_key: str = ""
) -> Generator:
    """Get response from Cohere and stream response"""
    co = cohere.Client(
        api_key=api_key,
    )

    cohere_history = format_chat_history_cohere(chat_history, background_info)

    stream = co.chat_stream(
        chat_history=cohere_history[:-1], message=cohere_history[-1]["message"]
    )

    for event in stream:
        if event.event_type == "text-generation":
            yield event.text


def gpt_response(prompt: str, api_key: str) -> str:
    """Get response from Cohere, with option to get output in json format"""

    co = cohere.Client(
        api_key=api_key,
    )

    response = co.chat(message=prompt)

    return response.text