#!/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
# ------------------------------------------------------------------------------

"""
This script is normally called by another script, such as archivelabels.py

However, if run standalone, it will generate 4 files with a list of specs
that should be archived based on the number of weeks in maintenance.cfg

The file generated are:

branches.txt
clients.txt
labels.txt
users.txt
"""

# Python 2.7/3.3 compatibility.
from __future__ import print_function

import os
import re
import sys
import time
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()

def log(msglevel="DEBUG", message=""):
    if msglevel == "ERROR":
        print(message)
        sys.exit(1)
    else:
        print(message)

def createlist(command, match_command, weeks):
    now = int(time.time())
    totalseconds = weeks * 7 * 24 * 60 * 60
    cutoff = now - totalseconds

    command_pattern = re.compile("^\.\.\. %s (.*)" % (match_command), re.IGNORECASE)
    access_pattern = re.compile("^\.\.\. Access (.*)", re.IGNORECASE)

    os.system("%s -Ztag %s > ztag.txt" % (p4, command))
    ztagfile = open("ztag.txt", "r")

    specs = []
    try:
        line = ztagfile.readline()
        while line:
            match = command_pattern.match(line)
            if match != None:
                specname = match.group(1)

            match = access_pattern.match(line)
            if match != None:
                access = match.group(1)
                specs.append("%s,%s" % (access, specname))
            line = ztagfile.readline()
    except:
        log("ERROR", "Non unicode character in ztag.txt")

    ztagfile.close()
    specs.sort()

    finalfile = open("%s.txt" % (command), "w")
    for line in specs:
        splitline = line.split(",")
        if cutoff > int(splitline[0]):
            finalfile.write(splitline[1] + "\n")
    finalfile.close()

    os.remove("ztag.txt")


def main():
    # The final generated file {client,label,user}dates.txt will output a list of
    # {client,label,user}s that have not been accessed in the specified number of
    #  weeks.  Change the second parameter below if you want a different number
    # of weeks.

    createlist("branches", "branch", config.weeks)
    createlist("clients", "client", config.weeks)
    createlist("labels", "label", config.weeks)
    createlist("users", "user", config.weeks)


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