# main.py
# Application entrypoint — dual-mode: API server or CLI inference on a crop GeoTIFF.

import argparse
import json
import logging
import os
import sys

# Ensure the project root is on sys.path so `src` can be imported.
sys.path.insert(0, os.path.dirname(os.path.abspath(__file__)))

from src.logger import setup_logging

setup_logging()
logger = logging.getLogger("boot")


def main():
    parser = argparse.ArgumentParser(
        description="GeoGlyph SAM2 — API server and CLI for geoglyph detection.",
    )

    # ---------------------------------------------------------------------
    # CLI mode
    # ---------------------------------------------------------------------
    parser.add_argument(
        "--cli",
        action="store_true",
        help="Run a single inference from the command line instead of starting the API server.",
    )

    parser.add_argument(
        "--crop",
        type=str,
        help="Path to a small georeferenced GeoTIFF crop. Required for --cli.",
    )

    parser.add_argument(
        "--output",
        type=str,
        help="Output GeoPackage path. Required for --cli.",
    )

    parser.add_argument(
        "--device",
        type=str,
        default=None,
        choices=["cuda", "cpu"],
        help="Inference device: cuda | cpu. Auto-detected by default.",
    )

    # ---------------------------------------------------------------------
    # API mode
    # ---------------------------------------------------------------------
    parser.add_argument(
        "--host",
        type=str,
        default="0.0.0.0",
        help="API server host. Default: 0.0.0.0.",
    )

    parser.add_argument(
        "--port",
        type=int,
        default=8000,
        help="API server port. Default: 8000.",
    )

    args = parser.parse_args()

    if args.cli:
        if not args.crop or not args.output:
            logger.error("--crop and --output are required in CLI mode.")
            sys.exit(1)

        from src.infer import run_geoglyph_sam2_on_crop

        try:
            logger.info(
                "CLI inference  |  crop=%s  output=%s  device=%s",
                args.crop,
                args.output,
                args.device,
            )

            result = run_geoglyph_sam2_on_crop(
                crop_tif_path=args.crop,
                output_gpkg=args.output,
                device=args.device,
            )

            logger.info(
                "CLI completed  |  n_masks=%d  output=%s",
                result["n_masks"],
                result["output_gpkg"],
            )

            print(json.dumps(result, indent=2))

        except Exception as exc:
            logger.error("CLI inference failed: %s", exc, exc_info=True)
            sys.exit(1)

    else:
        import uvicorn

        logger.info("Starting GeoGlyph SAM2 API on %s:%d", args.host, args.port)

        uvicorn.run(
            "src.api:app",
            host=args.host,
            port=args.port,
            reload=False,
        )


if __name__ == "__main__":
    main()


"""
python main.py --cli ^
  --crop "C:\path\to\sam2_crop.tif" ^
  --output "C:\path\to\sam2_result.gpkg" ^
  --device cpu

python main.py --host 0.0.0.0 --port 8000
"""