from abc import ABC, abstractmethod
from typing import Union


class ITextToSpeechService(ABC):

    @abstractmethod
    async def synthesize_speech(self, text: str, voice: str, engine: str, output_format: str):
        pass

    @abstractmethod
    async def text_to_speech(self, dialog) -> bytes:
        pass

    @abstractmethod
    async def _conversation_to_speech(self, conversation: list):
        pass

    @abstractmethod
    async def _text_to_speech(self, text: str):
        pass