#!/usr/bin/python3

###
###  Automatic seeding over HTTP
###  (C) 2016 Alex D.
###
###  http://www.gnu.org/licenses/agpl-3.0.en.html
###

import os
import sys
import json
import random
import platform
import urllib.request

sources = ['http://dalexhz1.cloudapp.net', 'http://dalexhz2.cloudapp.net', 'http://dalexhz4.cloudapp.net', 'http://dalexhz5.cloudapp.net']
data = urllib.request.urlopen(random.choice(sources)).readall();

if 'norpc' in sys.argv:
    for node in json.loads(data.decode()):
        print (node)
    sys.exit()

###  This module is required to function properly: 
###      https://github.com/jgarzik/python-bitcoinrpc

import errno
from bitcoinrpc.authproxy import AuthServiceProxy, JSONRPCException
from socket import error as socket_error

def confFile():
    folder = ''
    if platform.system() == 'Windows':
        folder = os.path.join(os.path.join(os.environ['APPDATA'], 'NovaCoin'))
    else:
        if platform.system() == 'Darwin':
            folder = os.path.expanduser('~/Library/Application Support/NovaCoin/')
        else:
            folder = os.path.expanduser('~/.novacoin')

    return os.path.join(folder, 'novacoin.conf')

conf_path = confFile()
if not os.path.exists(conf_path):
    parser.error('''Novacoin configuration file not found. Manually enter your RPC password.\r\n'''
        '''If you actually haven't created a configuration file, you should create one at %s with the text like this:\r\n'''
        '''\r\n'''
        '''server=1\r\n'''
        '''rpcuser=yourname\r\n'''
        '''rpcpassword=%x\r\n'''
        '''\r\n'''
        '''Keep that password secret! After creating the file, restart Novacoin.''' % (conf_path, random.randrange(2**128)))

conf = open(conf_path, 'rb').read()
contents = {}

for line in conf.splitlines(True):
    if line.startswith(b'#'):
        line = line[:line.index(b'#')]
    if not line.__contains__(b'='):
        continue
    k, v = line.split(b'=', 1)
    contents[k.strip()] = v.strip()

if b'rpcpassword' not in contents.keys():
    print('''RPC password is not found in the %s file.''' % (conf_path))
    sys.exit()

if b'rpcuser' not in contents.keys():
    print('''RPC user is not found in the %s file.''' % (conf_path))
    sys.exit()

rpcuser = contents[b'rpcuser'].decode()
rpcpassword = contents[b'rpcpassword'].decode()
rpcport = 8344
rpclisten = '127.0.0.1'

if b'rpcport' in contents.keys():
    rpcport = contents[b'rpcport'].decode()
if b'rpclisten' in contents.keys():
    rpclisten = contents[b'rpclisten'].decode()

access = AuthServiceProxy('http://%s:%s@%s:%d/' % (rpcuser, rpcpassword, rpclisten, int(rpcport)))

for node in json.loads(data.decode()):
    print ('Adding', node)
    try:
        access.addnode(node, 'add')
    except socket_error as e:
        if e.errno == errno.ECONNREFUSED:
            print ('Unable to communicate with Novacoin RPC')
        break
    except JSONRPCException as e:
        if e.code == -23:
            print ('Already added')
            continue
        break