import argparse
import tempfile
import polars as pl
from pathlib import Path

from pipeline.utils import download, extract_zip

URL = "https://www.arcgis.com/sharing/rest/content/items/077631e063eb4e1ab43575d01381ec33/data"


def convert_to_parquet(data_path: Path, parquet_path: Path) -> None:
    df = pl.scan_csv(data_path / "Data/NSPL_MAY_2025_UK.csv", try_parse_dates=True)
    print(f"Columns: {df.collect_schema().names()}")
    parquet_path.parent.mkdir(parents=True, exist_ok=True)
    df.sink_parquet(parquet_path, compression="zstd")
    print(f"Saved to {parquet_path}")


def main() -> None:
    parser = argparse.ArgumentParser(
        description="Download and convert ArcGIS postcode data"
    )
    parser.add_argument(
        "--output", type=Path, required=True, help="Output parquet file path"
    )
    args = parser.parse_args()

    with tempfile.TemporaryDirectory() as cache_dir:
        download_path = Path(cache_dir) / "arcgis_data.zip"
        extract_path = Path(cache_dir) / "arcgis_extracted"

        download(URL, download_path)
        extract_zip(download_path, extract_path)
        convert_to_parquet(extract_path, args.output)


if __name__ == "__main__":
    main()
