class TranslateResponse(BaseModel):
    source_lang: str
    target_lang: str
    translation: str
    model: str
    cached: bool = False
    usage: dict | None = None


class TranslateChunk(BaseModel):
    delta: str


class TranslateMeta(BaseModel):
    source_lang: str
    target_lang: str
    cached: bool = False


class TranslateDone(BaseModel):
    translation: str
    usage: dict | None = None