#!/usr/bin/env python
""" Read a table of CodeQL DB information, 
    group entries by (owner,name,CID),  
    sort each group by creationTime,
    and keep only the top (newest) element.
"""
import argparse
import logging

#
#* Configure logger
# 
logging.basicConfig(level=logging.INFO, format='%(asctime)s %(message)s')
# Overwrite log level set by minio
root_logger = logging.getLogger()
root_logger.setLevel(logging.INFO)

#
#* Process command line
#
parser = argparse.ArgumentParser(
    description=""" Read a table of CodeQL DB information, 
    group entries by (owner,name),  sort each group by
    creationTime and keep only the top (newest) element.
    """)

args = parser.parse_args()
#
#* Collect the information and select subset
#
import pandas as pd
import sys

df0 = pd.read_csv(sys.stdin)

df_sorted = df0.sort_values(by=['owner', 'name', 'CID', 'creationTime'])
df_unique = df_sorted.groupby(['owner', 'name', 'CID']).first().reset_index()

df_unique.to_csv(sys.stdout, index=False)


# Local Variables:
# python-shell-virtualenv-root: "~/work-gh/mrva/mrvacommander/client/qldbtools/venv/"
# End: