#!/usr/bin/env python3

"""

# Purpose: For a Google Drive User(s), show all non-shared drive files

# Python: Use python or python3 below as appropriate to your system; verify that you have version 3

# $ python -V or python3 -V

# Python 3.x.y

# Usage:

# 1: Get ACLs for all files, if you don't want all users, replace all users with your user selection in the command below

# $ gam config auto_batch_min 1 redirect csv ./filelistperms.csv multiprocess all users print filelist id title permissions

# $ gam redirect csv ./filelistperms.csv user user@domain.com print filelist id title permissions

# 2: From that list of ACLs, output a CSV file that lists only the non-shared files.

# $ python3 GetNonSharedFiles.py filelistperms.csv nonsharedfiles.csv

"""

import csv

import re

import sys

FILE_NAME = 'name'

ALT_FILE_NAME = 'title'

QUOTE_CHAR = '"' # Adjust as needed

LINE_TERMINATOR = '\n' # On Windows, you probably want '\r\n'

PERMISSIONS_N_TYPE = re.compile(r"permissions.(\d+).type")

if (len(sys.argv) > 2) and (sys.argv[2] != '-'):

outputFile = open(sys.argv[2], 'w', encoding='utf-8', newline='')

else:

outputFile = sys.stdout

if (len(sys.argv) > 1) and (sys.argv[1] != '-'):

inputFile = open(sys.argv[1], 'r', encoding='utf-8')

else:

inputFile = sys.stdin

inputCSV = csv.DictReader(inputFile, quotechar=QUOTE_CHAR)

outputCSV = csv.DictWriter(outputFile, inputCSV.fieldnames, lineterminator=LINE_TERMINATOR, quotechar=QUOTE_CHAR)

outputCSV.writeheader()

for row in inputCSV:

shared = False

for k, v in iter(row.items()):

mg = PERMISSIONS_N_TYPE.match(k)

if mg:

if v == 'user':

permissions_N = mg.group(1)

role = row[f'permissions.{permissions_N}.role']

emailAddress = row.get(f'permissions.{permissions_N}.emailAddress', '').lower()

if (role and role != 'owner') or (emailAddress and emailAddress != row['Owner'].lower()):

shared = True

elif v:

shared = True

if not shared:

outputCSV.writerow(row)

if inputFile != sys.stdin:

inputFile.close()

if outputFile != sys.stdout:

outputFile.close()