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from __future__ import annotations

import argparse
from pathlib import Path

from ultralytics import YOLO

from models import register_ultralytics_modules


ROOT = Path(__file__).resolve().parent
DEFAULT_WEIGHTS = ROOT / "weights" / "symbolic_capsule_network_segmentation.pt"


def build_parser() -> argparse.ArgumentParser:
    parser = argparse.ArgumentParser(description="Run Symbolic Capsule Network segmentation inference.")
    parser.add_argument("source", help="Image, directory, video, or glob pattern.")
    parser.add_argument("--weights", default=str(DEFAULT_WEIGHTS), help="Checkpoint path.")
    parser.add_argument("--imgsz", type=int, default=640)
    parser.add_argument("--conf", type=float, default=0.25)
    parser.add_argument("--device", default="")
    parser.add_argument("--save", action="store_true", default=True)
    parser.add_argument("--show", action="store_true")
    return parser


def main() -> None:
    args = build_parser().parse_args()
    weights = Path(args.weights).expanduser().resolve()
    if not weights.exists():
        raise FileNotFoundError(f"Checkpoint not found: {weights}")

    register_ultralytics_modules()
    model = YOLO(str(weights))

    predict_kwargs = {k: v for k, v in vars(args).items() if k != "weights"}
    model.predict(**predict_kwargs)


if __name__ == "__main__":
    main()