#!/usr/bin/env python3

import pandas as pd
import sys
from pathlib import Path

df = pd.read_csv(sys.argv[1])

df = df.drop(columns=['User', 'Email', 'Billable', 'Tags', 'Amount ()', 'Start time', 'End date', 'End time'])
df['Duration'] = pd.to_timedelta(df['Duration'])
df['Start date'] = pd.to_datetime(df['Start date'])
df['duration_dec'] = df['Duration'].dt.total_seconds() / 3600
df.rename(columns={
    'Project': 'project',
    'Description': 'description',
    'Start date': 'day',
    'Duration': 'duration'
}, inplace=True)

df = df.groupby(['project','description','day'], as_index=False).agg({'duration': 'sum'})
df['duration'] = round(df['duration'].dt.total_seconds() / 60 / 60, 2)
print("Total hours are: ", round(df['duration'].sum(), 2))

df.to_csv(Path(sys.argv[1]).stem + '-grouped.csv', index=False)