"""
Converts the raw CSV form to a Parquet form with just the columns we want
"""
import os
import tempfile

import click
import pandas as pd

import mlflow


@click.command(
    help="Given a CSV file (see load_raw_data), transforms it into Parquet "
    "in an mlflow artifact called 'data-parquet-dir'"
)
@click.option("--data-csv")
@click.option(
    "--max-row-limit", default=10000, help="Limit the data size to run comfortably on a laptop."
)
def ingest_convert(data_csv, max_row_limit):
    with mlflow.start_run():
        tmpdir = tempfile.mkdtemp()
        data_parquet_dir = os.path.join(tmpdir, "data-parquet")
        print(f"Converting data CSV {data_csv} to Parquet {data_parquet_dir}")

        # data_csv = fr"{data_csv}"
        # print(data_csv)
        # dirName = data_csv.replace("file:///", "")

        # fn = [f for f in os.listdir(dirName)\
        #     if f.endswith('.csv') and os.path.isfile(os.path.join(dirName, f))][0]
        # data_csv_file = os.path.join(dirName, fn)

        data_df = pd.read_csv(data_csv)
        data_df.to_parquet(data_parquet_dir)

        # table = pa.csv.read_csv(data_csv)
        # pa.parquet.write_table(table, data_csv.replace('csv', 'parquet'))
        
        if max_row_limit != -1:
            data_df = data_df.iloc[:max_row_limit]

        # data_df.write.parquet(data_parquet_dir)

        print(f"Uploading Parquet data: {data_parquet_dir}")
        mlflow.log_artifacts(data_parquet_dir, "data-parquet-dir")


if __name__ == "__main__":
    ingest_convert()