#!/usr/bin/env python3
"""Example pipeline: convert all exported images to grayscale."""

from pathlib import Path

from imagepipeline import Pipeline

# Change this to your Darktable export folder.
INPUT = Path("/path/to/darktable/export")

# Optional: where run folders are created (defaults to current working directory).
OUTPUT_BASE = Path.home() / "pipeline_output"


def main() -> None:
    with Pipeline(
        name="example_grayscale",
        input_dir=INPUT,
        output_base=OUTPUT_BASE,
    ) as p:
        gray = p.step("imagemagick_grayscale", inputs="input")
        # Chain another step on the result:
        # p.step("imagemagick_grayscale", inputs=gray, colorspace="Gray")
        output_root = p.run()

    print(f"Pipeline finished. Output: {output_root}")


if __name__ == "__main__":
    main()