from typing import Literal, Optional
from pydantic import BaseModel, Field


class GeneratePresentationRequest(BaseModel):
    prompt: str = Field(..., description="The prompt for generating the presentation")
    n_slides: int = Field(default=8, description="Number of slides to generate")
    language: str = Field(default="English", description="Language for the presentation")
    template: str = Field(default="general", description="Template to use for the presentation")
    export_as: Literal["pptx", "pdf"] = Field(default="pptx", description="Export format")