#!/usr/bin/python
#
# This software is in the public domain, furnished "as is", without technical
# support, and with no warranty, express or implied, as to its usefulness for
# any purpose.
#
# deluge_config.py
# This code (at least in theory) allows one to alter configuration settings
# on a deluge backend.   At the moment, though, it only alters the parameters
# that I've found useful to change.
#
# Authour: Garett Harnish

import logging
from optparse import OptionParser
from sys import argv, exit, stderr


def isFloatDigit (string):
    if string.isdigit():
        return True
    else:
        try:
            tmp = float(string)
            return True
        except: return False;

# set up command-line options
parser = OptionParser()
parser.add_option("--port", help="port for deluge backend host (default: 58846)", default="58846", dest="port")
parser.add_option("--host", help="hostname of deluge backend to connect to (default: localhost)", default="localhost", dest="host")
parser.add_option("--max_active_limit", help="sets the absolute maximum number of active torrents on the deluge backend", dest="max_active_limit")
parser.add_option("--max_active_downloading", help="sets the maximum number of active downloading torrents on the deluge backend", dest="max_active_downloading")
parser.add_option("--max_active_seeding", help="sets the maximum number of active seeding torrents on the deluge backend", dest="max_active_seeding")
parser.add_option("--max_download_speed", help="sets the maximum global download speed on the deluge backend", dest="max_download_speed")
parser.add_option("--max_upload_speed", help="sets the maximum global upload speed on the deluge backend", dest="max_upload_speed")
parser.add_option("--debug", help="outputs debug information to the console", default=False, action="store_true", dest="debug")

# grab command-line options
(options, args) = parser.parse_args()

if not options.debug:
    logging.disable(logging.ERROR)

settings = {}

# set values if set and valid
if options.max_active_limit:
    if options.max_active_limit.isdigit() and int(options.max_active_limit) >= 0:
        settings['max_active_limit'] = int(options.max_active_limit)
    else:
        stderr.write ("ERROR: Invalid max_active_limit parameter!\n")
        exit (-1)

if options.max_active_downloading:
    if options.max_active_downloading.isdigit() and int(options.max_active_downloading) >= 0:
        settings['max_active_downloading'] = int(options.max_active_downloading)
    else:
        stderr.write ("ERROR: Invalid max_active_downloading parameter!\n")
        exit (-1)

if options.max_active_seeding:
    if options.max_active_seeding.isdigit() and int(options.max_active_seeding) >= 0:
        settings['max_active_seeding'] = int(options.max_active_seeding)
    else:
        stderr.write ("ERROR: Invalid max_active_seeding parameter!\n")
        exit (-1)

if options.max_download_speed:
    if isFloatDigit(options.max_download_speed) and (float(options.max_download_speed) >= 0.0 or float(options.max_download_speed) == -1.0):
        settings['max_download_speed'] = float(options.max_download_speed)
    else:
        stderr.write ("ERROR: Invalid max_download_speed parameter!\n")
        exit (-1)

if options.max_upload_speed:
    if isFloatDigit(options.max_upload_speed) and (float(options.max_upload_speed) >= 0.0 or float(options.max_upload_speed) == -1.0):
        settings['max_upload_speed'] = float(options.max_upload_speed)
    else:
        stderr.write ("ERROR: Invalid max_upload_speed parameter!\n")
        exit (-1)

# If there is something to do ...
if settings:
    # create connection to daemon
    from deluge.ui.client import sclient as client
    client.set_core_uri("http://" + options.host + ":" + options.port)

    # commit configurations changes
    client.set_config(settings)