from __future__ import annotations

from ..schema import GenerationResult, TextToImageRequest
from ..service import ImageGenerationService


async def generate_image(
    service: ImageGenerationService,
    positive_prompt: str,
    negative_prompt: str | None = None,
    size: str | None = None,
) -> GenerationResult:
    request = TextToImageRequest.create(
        positive_prompt,
        negative_prompt,
        size,
        default_size=service.config.generation.default_size,
    )
    return await service.generate_image(request)