#!/usr/bin/env python
# ==============================================================================
# Copyright and license info is available in the LICENSE file included with
# the Server Deployment Package (SDP), and also available online:
# https://swarm.workshop.perforce.com/projects/perforce-software-sdp/view/main/LICENSE
# ------------------------------------------------------------------------------

"""
Usage:
  python checkusers.py

This script will generate a list of all user names that are listed in any group,
but do not have a user account on the server. The results are written to removeusersfromgroups.txt.
You can pass that to removeuserfromgroups.py to do the cleanup.
"""

# Python 2.7/3.3 compatibility.
from __future__ import print_function

import os
import re
import sys
import sdputils

if len(sys.argv) > 1:
    SDP_INSTANCE = str(sys.argv[1])
else:
    SDP_INSTANCE = '1'

utils = sdputils.SDPUtils(SDP_INSTANCE)
config = utils.config
p4 = utils.p4
utils.login()

users = []
groupusers = []
groups = []


def main():
    try:
        for user in os.popen("%s users -a" % p4).readlines():
            user = re.sub(r" <.*", r"", user)
            user = user.strip()
            user = user.lower()
            users.append(user)
    except:
        print("Non unicode user name on server. Some user names may have been skipped.")

    for group in os.popen("%s groups" % p4).readlines():
        group = group.strip()
        groups.append(group)

    for group in groups:
        pastOwners = 0
        for user in os.popen('%s group -o "%s"' % (p4, group)).readlines():
            user = user.strip()
            if re.match(r"Owners:", user):
                pastOwners = 1
                continue
            if pastOwners == 1:
                user = user.lower()
                if user in groupusers:
                    continue
                else:
                    if not re.search("users:", user):
                        if user:
                            groupusers.append(user)

    groupusers.sort()

    userfile = open("removeusersfromgroups.txt", "w")

    for groupuser in groupusers:
        if groupuser in users:
            continue
        else:
            userfile.write("%s\n" % groupuser)

    userfile.close()


###############################################################################
# main
if __name__ == "__main__":
    main()