from logging import getLogger
from typing import Callable, List

from PIL import Image

from ..params import ImageParams, Size, StageParams
from ..server import ServerContext
from ..worker import WorkerContext
from .stage import BaseStage

logger = getLogger(__name__)


class SourceNoiseStage(BaseStage):
    def run(
        self,
        _worker: WorkerContext,
        _server: ServerContext,
        _stage: StageParams,
        _params: ImageParams,
        sources: List[Image.Image],
        *,
        size: Size,
        noise_source: Callable,
        stage_source: Image.Image,
        **kwargs,
    ) -> List[Image.Image]:
        logger.info("generating image from noise source")

        if len(sources) > 0:
            logger.warning(
                "source images were passed to a noise stage and will be discarded"
            )

        outputs = []
        for source in sources:
            output = noise_source(source, (size.width, size.height), (0, 0))

            logger.info("final output image size: %sx%s", output.width, output.height)
            outputs.append(output)

        return outputs