from huggingface_hub import hf_hub_download, snapshot_download
import tarfile
import os

REPO_ID = "Sk-21/Cryo-Bench"
SAVE_DIR = "./data"

DATASETS = ["GLID", "GLD", "SICD", "GSDD", "CaFFe"]

def download_and_extract(name, save_dir=SAVE_DIR):
    print(f"⬇️  Downloading {name}...")
    tar_path = hf_hub_download(
        repo_id=REPO_ID,
        filename=f"data/{name}.tar.gz",
        repo_type="dataset"
    )
    print(f"📦 Extracting {name}...")
    with tarfile.open(tar_path, "r:gz") as tar:
        tar.extractall(save_dir)
    print(f"✅ {name} ready at {save_dir}/{name}/")

if __name__ == "__main__":
    import argparse
    parser = argparse.ArgumentParser()
    parser.add_argument(
        "--datasets",
        nargs="+",
        default=DATASETS,
        choices=DATASETS,
        help="Datasets to download"
    )
    parser.add_argument("--save_dir", default=SAVE_DIR)
    args = parser.parse_args()

    os.makedirs(args.save_dir, exist_ok=True)

    for name in args.datasets:
        download_and_extract(name, args.save_dir)

    print("\n🎉 All done!")