from io import BytesIO
from logging import getLogger

import requests
from PIL import Image

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

logger = getLogger(__name__)


class SourceURLStage(BaseStage):
    def run(
        self,
        _job: WorkerContext,
        _server: ServerContext,
        _stage: StageParams,
        _params: ImageParams,
        source: Image.Image,
        *,
        source_url: str,
        stage_source: Image.Image,
        **kwargs,
    ) -> Image.Image:
        source = stage_source or source
        logger.info("loading image from URL source")

        if source is not None:
            logger.warn(
                "a source image was passed to a source stage, and will be discarded"
            )

        response = requests.get(source_url)
        output = Image.open(BytesIO(response.content))

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