from enum import Enum

from gpt4free import forefront
from gpt4free import quora
from gpt4free import theb
from gpt4free import usesless
from gpt4free import you
from gpt4free import deepai


class Provider(Enum):
    """An enum representing  different providers."""

    You = 'you'
    Poe = 'poe'
    ForeFront = 'fore_front'
    Theb = 'theb'
    UseLess = 'useless'
    DeepAI = 'deepai'


class Completion:
    """This class will be used for invoking the given provider"""

    @staticmethod
    def create(provider: Provider, prompt: str, **kwargs) -> str:
        """
        Invokes the given provider with given prompt and addition arguments and returns the string response

        :param provider: an enum representing the provider to use while invoking
        :param prompt: input provided by the user
        :param kwargs:  Additional keyword arguments to pass to the provider while invoking
        :return: A string representing the response from the provider
        """
        if provider == Provider.Poe:
            return Completion.__poe_service(prompt, **kwargs)
        elif provider == Provider.You:
            return Completion.__you_service(prompt, **kwargs)
        elif provider == Provider.ForeFront:
            return Completion.__fore_front_service(prompt, **kwargs)
        elif provider == Provider.Theb:
            return Completion.__theb_service(prompt, **kwargs)
        elif provider == Provider.UseLess:
            return Completion.__useless_service(prompt, **kwargs)
        elif provider == Provider.DeepAI:
            return Completion.__deepai_service(prompt, **kwargs)
        else:
            raise Exception('Provider not exist, Please try again')

    @staticmethod
    def __useless_service(prompt: str, **kwargs) -> str:
        return usesless.Completion.create(prompt=prompt, **kwargs)

    @staticmethod
    def __you_service(prompt: str, **kwargs) -> str:
        return you.Completion.create(prompt, **kwargs).text

    @staticmethod
    def __poe_service(prompt: str, **kwargs) -> str:
        return quora.Completion.create(prompt=prompt, **kwargs).text

    @staticmethod
    def __fore_front_service(prompt: str, **kwargs) -> str:
        return forefront.Completion.create(prompt=prompt, **kwargs).text

    @staticmethod
    def __theb_service(prompt: str, **kwargs):
        return ''.join(theb.Completion.create(prompt=prompt))
    
    @staticmethod
    def __deepai_service(prompt: str, **kwargs):
        return ''.join(deepai.Completion.create(prompt=prompt))

class ChatCompletion:
    """This class is used to execute a chat completion for a specified provider"""

    @staticmethod
    def create(provider: Provider, messages: list, **kwargs) -> str:
        """
        Invokes the given provider with given chat messages and addition arguments and returns the string response

        :param provider: an enum representing the provider to use while invoking
        :param messages: a list of chat messages, see the OpenAI docs for how to format this (https://platform.openai.com/docs/guides/chat/introduction)
        :param kwargs:  Additional keyword arguments to pass to the provider while invoking
        :return: A string representing the response from the provider
        """
        if provider == Provider.DeepAI:
            return ChatCompletion.__deepai_service(messages, **kwargs)
        else:
            raise Exception('Provider not exist, Please try again')
    
    @staticmethod
    def __deepai_service(messages: list, **kwargs):
        return ''.join(deepai.ChatCompletion.create(messages=messages))