#!/usr/bin/env python3
"""Crusaders pipeline: rembg variants composited over backgrounds and originals."""

from pathlib import Path

from imagepipeline import Pipeline

INPUT = Path("/home/frank/pics/20260620_Albershausen Crusaders - Montabaur  Fighting Farmers/darktable_exported")
OUTPUT_BASE = Path.home() / "pipeline_output"

# Reuse outputs from a previous run or external folder (key = step id, e.g. rembg_01).
EXISTING_OUTPUTS: dict[str, Path] = {}

# Resume an aborted run: point to its output root folder (or None for a fresh run).
CONTINUE_FROM: Path | None = Path("/home/frank/pipeline_output/crusaders_260623085301")

COLOR1 = "#0064b0"
COLOR2 = "#00badf"

# COLOR1 = #0064b0 -> 0,100,176; COLOR2 = #00badf -> 0,186,223
GMIC_STEREO = "-gcd_stereo_img 0,0,2.028,1,1.714,3.06,4,1,0"
GMIC_DROP_SHADOW = "-fx_drop_shadow3d 0,0,0,10,1,1,2,0.5,0,186,223,200,0"
GMIC_BWRECOLOR = (
    "-fx_bwrecolorize 0,0,0,0,0,1,0,2,0,186,223,255,0,100,176,0,255,"
    "158,137,189,255,224,191,228,255,0,100,176,0,255,255,255,255,255,255,255,"
    "255,255,0,100,176,0,255"
)
GMIC_GRADIENT_A = (
    '-fx_custom_gradient 0,0,0,1,2,1,0,128,100,100,2,0,1,0,"",1,0,0,100,176,255,'
    "0,186,223,255,255,255,0,255,255,255,255,255,0,255,255,255,0,255,0,255,0,0,"
    "255,255,128,128,128,255,255,0,255,255,0,0,0,0"
)
GMIC_GRADIENT_B = (
    '-fx_custom_gradient 0,0,0,1,2,1,0,128,100,100,2,0,1,0,"",1,0,0,186,223,255,'
    "0,100,176,255,255,255,0,255,255,255,255,255,0,255,255,255,0,255,0,255,0,0,"
    "255,255,128,128,128,255,255,0,255,255,0,0,0,0"
)
GMIC_JPR_SMOOTH = "-jpr_gradient_smooth 0,1.5"


def main() -> None:
    with Pipeline(
        name="crusaders",
        input_dir=INPUT,
        output_base=OUTPUT_BASE,
        existing_outputs=EXISTING_OUTPUTS or None,
        continue_from=CONTINUE_FROM,
    ) as p:
        rembg_out = p.step("rembg", inputs="input")

        white_bg = p.step("imagemagick_fill", inputs="input", color1="#ffffff")
        black_bg = p.step("imagemagick_fill", inputs="input", color1="#000000")
        gradient_45_bg = p.step(
            "imagemagick_fill",
            inputs="input",
            color1=COLOR1,
            color2=COLOR2,
            gradient=True,
            angle=45,
        )
        gradient_radial_bg = p.step(
            "imagemagick_fill",
            inputs="input",
            color1=COLOR1,
            color2=COLOR2,
            gradient=True,
            radial=True,
        )
        grayscale = p.step("gmic_grayscale", inputs="input")

        rembg_stereo = p.step("gmic", inputs=rembg_out, command=GMIC_STEREO)
        rembg_shadow = p.step("gmic", inputs=rembg_out, command=GMIC_DROP_SHADOW)
        rembg_bwrecolor = p.step("gmic", inputs=rembg_out, command=GMIC_BWRECOLOR)
        rembg_gradient_a = p.step("gmic", inputs=rembg_out, command=GMIC_GRADIENT_A)
        rembg_gradient_b = p.step("gmic", inputs=rembg_out, command=GMIC_GRADIENT_B)
        rembg_jpr_smooth = p.step("gmic", inputs=rembg_out, command=GMIC_JPR_SMOOTH)
        rembg_jpr_smooth_sized = p.step(
            "imagemagick_scale_crop",
            inputs=rembg_jpr_smooth,
            scale=1.05,
        )

        rembg_stereo_alpha = p.step(
            "color_to_alpha", inputs=rembg_stereo, color="#000000"
        )
        color_bg = p.step("imagemagick_fill", inputs="input", color1=COLOR1)
        rembg_smooth_alpha = p.step(
            "color_to_alpha", inputs=rembg_jpr_smooth, color="#7f7f7f"
        )
        rembg_smooth_sized = p.step(
            "imagemagick_scale_crop",
            inputs=rembg_smooth_alpha,
            scale=1.05,
        )

        # combine: white background, rembg
        p.step("composite", inputs=[white_bg, rembg_out])

        # combine: black background, rembg
        p.step("composite", inputs=[black_bg, rembg_out])

        # combine: linear gradient background, rembg
        p.step("composite", inputs=[gradient_45_bg, rembg_out])

        # combine: radial gradient background, rembg
        p.step("composite", inputs=[gradient_radial_bg, rembg_out])

        # combine: original, rembg (stereo), rembg
        stereo_mid = p.step("composite", inputs=["input", rembg_stereo])
        p.step("composite", inputs=[stereo_mid, rembg_out])

        # combine: original, rembg (drop shadow), rembg
        shadow_mid = p.step("composite", inputs=["input", rembg_shadow])
        p.step("composite", inputs=[shadow_mid, rembg_out])

        # combine: original, rembg (bw recolorize @ 50%), rembg
        bw_mid = p.step(
            "composite",
            inputs=["input", rembg_bwrecolor],
            foreground_opacity=0.5,
        )
        p.step("composite", inputs=[bw_mid, rembg_out])

        # combine: rembg (custom gradient A), rembg
        p.step("composite", inputs=[rembg_gradient_a, rembg_out])

        # combine: rembg (custom gradient B), rembg
        p.step("composite", inputs=[rembg_gradient_b, rembg_out])

        # combine: original, rembg (jpr smooth, scaled), rembg
        smooth_mid = p.step("composite", inputs=["input", rembg_jpr_smooth_sized])
        p.step("composite", inputs=[smooth_mid, rembg_out])

        # combine: original (grayscale), rembg
        p.step("composite", inputs=[grayscale, rembg_out])

        # combine: original, rembg (stereo, black to alpha), rembg
        stereo_alpha_mid = p.step("composite", inputs=["input", rembg_stereo_alpha])
        p.step("composite", inputs=[stereo_alpha_mid, rembg_out])

        # combine: color background, rembg (drop shadow), rembg
        shadow_color_mid = p.step("composite", inputs=[color_bg, rembg_shadow])
        p.step("composite", inputs=[shadow_color_mid, rembg_out])

        # combine: original, rembg (jpr smooth, #7f7f7f to alpha, scaled), rembg
        smooth_alpha_mid = p.step("composite", inputs=["input", rembg_smooth_sized])
        p.step("composite", inputs=[smooth_alpha_mid, rembg_out])

        output_root = p.run()

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


if __name__ == "__main__":
    main()