rupi_processor.py

from __future__ import annotations

from pathlib import Path


class RupiProcessor:
    def __init__(self, scale_percent=50):
        self.scale_percent = scale_percent

    def build_output_path(self, local_path):
        return Path(local_path).with_suffix(".png")

    def _require_image(self):
        try:
            from PIL import Image
        except ImportError as exc:
            raise RuntimeError("Pillow가 필요합니다. `pip install pillow`로 설치하세요.") from exc
        return Image

    def process(self, local_path):
        Image = self._require_image()
        output_path = self.build_output_path(local_path)
        output_path.parent.mkdir(parents=True, exist_ok=True)
        try:
            with Image.open(local_path) as image:
                width, height = image.size
                new_size = (
                    max(1, round(width * self.scale_percent / 100)),
                    max(1, round(height * self.scale_percent / 100)),
                )
                resized = image.resize(new_size)
                resized.save(output_path, format="PNG")
                print(
                    f"[IMAGE] {local_path.name} / size={image.size} / mode={image.mode} "
                    f"-> output={output_path} / resized={new_size}"
                )
        except Exception:
            output_path.unlink(missing_ok=True)
            raise
        return output_path