#!/usr/bin/env python3
r"""
Documentation

License: This program is released under the MIT License
"""

# Imports
import boto3
from openpyxl import load_workbook

# Main function
def main() -> None:
    # Open spreadsheet and add a sheet
    wb = load_workbook('aws-inventory.xlsx')
    ws = wb.create_sheet("S3")

    s3_client = boto3.client('s3')

    # Get the list of all buckets
    response = s3_client.list_buckets()

    # Print the names of the buckets
    ws.append(['Buckets'])
    for bucket in response['Buckets']:
        ws.append([bucket["Name"]])

    wb.save('aws-inventory.xlsx')


# Call main function
if __name__ == '__main__':
    main()