import argparse


def parseArgs():
    args = argparse.ArgumentParser(description = ('Dynamically update and enable/disable '
                                                  'Hurricane Electric Tunnelbroker'))
    args.add_argument('-i', '--no-wan-ip',
                      dest = 'wan_ip',
                      action = 'store_false',
                      help = ('If specified, use the RFC1918 IP address assigned to this machine instead of the WAN '
                              'IP (necessary if this machine is behind NAT)'))
    args.add_argument('-c', '--config',
                      dest = 'conf_xml',
                      default = '~/.config/he_tunnelbroker.xml',
                      help = ('The path to the config. See example.tunnelbroker.xml '
                              'Default: ~/.config/he_tunnelbroker.xml'))
    args.add_argument('-t', '--tunnel-id',
                      dest = 'tun_id',
                      type = int,
                      help = ('The tunnel profile ID/name to use in -c/--config. '
                              'Default is to use the first one found'))
    args.add_argument('-u', '--no-update',
                      dest = 'update',
                      action = 'store_false',
                      help = ('If specified, do not perform the automatic update for start operations. Has no effect '
                              'for other operations'))
    args.add_argument('oper',
                      metavar = 'OPERATION',
                      choices = ('update', 'start', 'stop'),
                      help = ('The operation to perform ("start", "stop", or "update"). "update" is performed '
                              'automatically by "start", but otherwise will just update the IPv4 address on record '
                              'at tunnelbroker'))
    return(args)