"""
Purpose:
    Interact with the OpenAI API.
    Provide supporting prompt engineering functions.
"""

import sys
from dotenv import load_dotenv
import os
from typing import Any, Dict
import openai

# load .env file
load_dotenv()

assert os.environ.get("OPENAI_API_KEY")

# get openai api key
openai.api_key = os.environ.get("OPENAI_API_KEY")

# ------------------ helpers ------------------


def safe_get(data, dot_chained_keys):
    """
    {'a': {'b': [{'c': 1}]}}
    safe_get(data, 'a.b.0.c') -> 1
    """
    keys = dot_chained_keys.split(".")
    for key in keys:
        try:
            if isinstance(data, list):
                data = data[int(key)]
            else:
                data = data[key]
        except (KeyError, TypeError, IndexError):
            return None
    return data


def response_parser(response: Dict[str, Any]):
    return safe_get(response, "choices.0.message.content")


# ------------------ content generators ------------------


def prompt(prompt: str, model: str = "gpt-4") -> str:
    # validate the openai api key - if it's not valid, raise an error
    if not openai.api_key:
        sys.exit(
            """

ERORR: OpenAI API key not found. Please export your key to OPENAI_API_KEY

Example bash command:
    export OPENAI_API_KEY=<your openai apikey>
            """
        )

    response = openai.ChatCompletion.create(
        model=model,
        messages=[
            {
                "role": "user",
                "content": prompt,
            }
        ],
    )

    return response_parser(response)


def add_cap_ref(
    prompt: str, prompt_suffix: str, cap_ref: str, cap_ref_content: str
) -> str:
    """
    Attaches a capitalized reference to the prompt.

    Example
        prompt = 'Refactor this code.'
        prompt_suffix = 'Make it more readable using this EXAMPLE.'
        cap_ref = 'EXAMPLE'
        cap_ref_content = 'def foo():\n    return True'

        returns 'Refactor this code. Make it more readable using this EXAMPLE.\n\nEXAMPLE\n\ndef foo():\n    return True'
    """

    new_prompt = f"""{prompt} {prompt_suffix}\n\n{cap_ref}\n\n{cap_ref_content}"""

    return new_prompt